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- Journal of Electrochemistry (46)
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Articles 61 - 90 of 106
Full-Text Articles in Engineering
Influence Of Surfactants On The Formation And Growth Of Cadmium Telluride Nanoplatelets, A.S. Akhmetova, A.K. Ospanova, B.N. Yussupbekova, T.T. Alibay
Influence Of Surfactants On The Formation And Growth Of Cadmium Telluride Nanoplatelets, A.S. Akhmetova, A.K. Ospanova, B.N. Yussupbekova, T.T. Alibay
Eurasian Journal of Physics and Functional Materials
The article presents a comprehensive review of the current research on the use of surfactants in CdTe nanoplatelet synthesis, including a discussion of the various types of surfactants that have been used and their effects on nanoplatelet size, shape, and optical properties. Additionally, the article examines the mechanisms by which surfactants influence the growth and morphology of CdTe nanoplatelets, with a focus on the role of surfactant, size, and structure. Overall, this article provides a detailed analysis of the use of surfactants in the synthesis of CdTe nanoplatelets and highlights the potential for this approach to improve the performance of …
Electron-Hole Trapping Centers In Alkali Metal Sulfates With Dy3+ Impurities, T.N. Nurakhmetov, T.T. Alibay, R.Z. Bakhtizin, S. Pazylbek, A.Zh. Kainarbay, A.M. Zhunusbekov, B.M. Sadykova, D.A. Tolekov, R.K. Shamieva, A.S. Nurpeissov
Electron-Hole Trapping Centers In Alkali Metal Sulfates With Dy3+ Impurities, T.N. Nurakhmetov, T.T. Alibay, R.Z. Bakhtizin, S. Pazylbek, A.Zh. Kainarbay, A.M. Zhunusbekov, B.M. Sadykova, D.A. Tolekov, R.K. Shamieva, A.S. Nurpeissov
Eurasian Journal of Physics and Functional Materials
The Na2SO4 − Dy samples were obtained by slow evaporation method. The spectroscopic methods were used to study the mechanisms of formation of electron and hole trapping centers. Intrinsic recombination emission of 2.9–3.1 eV and impurity emission of 2.55 eV and 2.15 eV are excited at 4.0–4.5 eV. Intrinsic SO3−4− SO−4 and impurity Dy2+−SO−4 trapping centers were revealed. The local levels corresponding between the electron and hole trapping center are 4.0–4.5 eV.
Research On Ferroelectric-Piezoelectric Properties And Relaxor Phase Transition Characteristics Of Pslzt-Bmt Ceramics, N.V. Thinh, L.D. Vuong, D.V. On, T.V. Chuong, L.V. Truong Son, T.N. Dat, L.V. Thanh Son, V.T. Tung
Research On Ferroelectric-Piezoelectric Properties And Relaxor Phase Transition Characteristics Of Pslzt-Bmt Ceramics, N.V. Thinh, L.D. Vuong, D.V. On, T.V. Chuong, L.V. Truong Son, T.N. Dat, L.V. Thanh Son, V.T. Tung
Eurasian Journal of Physics and Functional Materials
(1-x)[(Pb0.94Sr0.05La0.01)(Zr0.54Ti0.46)0.9975O3]-x[Bi(Mn 1/2 Ti1/2 )O3] ceramics with x in the range of 0–0.05 mol were successfully synthesized following the conventional solid-phase route. The materials were thoroughly investigated to study their structural phase, microstructure, ferro-piezoelectric characteristics, and dielectric behavior. The addition of BMT to PSLZT contributed to the transition of the tetragonal phase to the rhombohedral phase and an increase in the mechanical quality coefficient Qm of the material. The value of the electromechanical coupling coefficient kp =0.66, the value of kt=0.53, …
Non-Destructive Structural Studies Of Ceramic Fragments Of Ancient Tribes Of Kazakhstan, A.Zh. Zhomartova, B.A. Bakirov, S.E. Kichanov, R.S. Zhumatayev, A.T. Toleubayev, S. Shakenov, D.P. Kozlenko
Non-Destructive Structural Studies Of Ceramic Fragments Of Ancient Tribes Of Kazakhstan, A.Zh. Zhomartova, B.A. Bakirov, S.E. Kichanov, R.S. Zhumatayev, A.T. Toleubayev, S. Shakenov, D.P. Kozlenko
Eurasian Journal of Physics and Functional Materials
The phase composition of several fragments of the ancient ceramic of the early medieval settlement of Asusay and burial ground Eleke Sazy in the modern Republic of Kazakhstan has been studied using neutron diffraction and Raman spectroscopy. The quartz, calcite, and feldspar minerals are dominant phases in the studied ceramic fragments. The fractions of those phases were obtained. The spatial arrangement of inner components inside volumes of fragments was determined using neutron tomography. The pores in the ceramic fragments were segmented, and the porosity for each sample was obtained. The phase composition and internal pores are discussed within the framework …
Influence Of Substitutions On The Structure, Ionic Conductivity, And Phase Transitions In The System Of Na3fe2(1-X)Sc2x(Po4)3 (0≤X≤0.06) Solid Solutions, A.S. Nogai, A.A. Nogai, E.A. Nogai, A.A. Bush, D.E. Uskenbaev
Influence Of Substitutions On The Structure, Ionic Conductivity, And Phase Transitions In The System Of Na3fe2(1-X)Sc2x(Po4)3 (0≤X≤0.06) Solid Solutions, A.S. Nogai, A.A. Nogai, E.A. Nogai, A.A. Bush, D.E. Uskenbaev
Eurasian Journal of Physics and Functional Materials
The article presents data on the study of the effect of substitutions of M-cations in the system of Na3Fe2(1-x)Sc2x(PO4)3 solid solutions (in the concentration range 0≤x≤0.06) on the crystal structure, ionic conductivity, and also on the temperature of phase transitions Ta→b, Tb→g. It is shown that samples of Na3Fe2(1-x)Sc2x(PO4)3 (0≤x≤0.06) solid solutions are monoclinically distorted, and the structure parameters increase linearly with increasing dopant concentration. Moreover, in the studied samples of solid solutions, an increase in the conductivity …
Measurement Of Thermal Conductivity Of Epoxy Resin Reinforced With Different Weight Ratios Of Glass And Carbon Powders, Edrees Edaan Ghadeer
Measurement Of Thermal Conductivity Of Epoxy Resin Reinforced With Different Weight Ratios Of Glass And Carbon Powders, Edrees Edaan Ghadeer
Al-Bahir Journal for Engineering and Pure Sciences
The effect of thermal conductivity was studied on the composites prepared before and after reinforcement with different weight fractions (10, 20, 30, 40, 50, 60 wt %), using a Disc Lee's device, and the dispersion of the filler was studied by morphological analysis of the complexes using scanning electron microscopy (SEM). The (SEM) of glass composite powders, showed a smooth surface with a chance of forming very few voids, clusters and blisters on the surface of the sample, which increased with the increase of the weight fractions of the filled powder. While the composites filled with carbon powders show smooth …
P-Doped Ru-Pt Alloy Catalyst Toward High Performance Alkaline Hydrogen Evolution Reaction, Rong-Qin Huang, Wei-Ping Liao, Meng-Xuan Yan, Shi Liu, Yuan-Ming Li, Xiong-Wu Kang
P-Doped Ru-Pt Alloy Catalyst Toward High Performance Alkaline Hydrogen Evolution Reaction, Rong-Qin Huang, Wei-Ping Liao, Meng-Xuan Yan, Shi Liu, Yuan-Ming Li, Xiong-Wu Kang
Journal of Electrochemistry
Electrocatalytic water splitting represents grand promise for hydrogen fuel in modern energy equipment, and the design and fabrication of higher performance catalysts are at the central. Herein, we report the sequential phosphorus (P)-doping into ruthenium (Ru) nanoparticles (Ru-P/C) by thermal annealing of Ru nanoparticles in phosphine (PH3) atmosphere and deposition of extremely low concentration of platinum (Pt) to obtain P-doped Ru-Pt alloy catalyst supported on carbon nanotubes (CNTs), which is denoted as (Ru-P)#Pt/C. The data by X-ray diffraction spectroscopy and transmission electron microscopy show that the Ru nanoparticles existed in the form of hexagonal close-packed (hcp) phase with …
Deep Euteceic Solvents-Assisted Synthesis Of Novel Network Nanostructures For Accelerating Formic Acid Electrooxidation, Jun-Ming Zhang, Xiao-Jie Zhang, Yao Chen, Ying-Jian Fan, You-Jun Fan, Jian-Feng Jia
Deep Euteceic Solvents-Assisted Synthesis Of Novel Network Nanostructures For Accelerating Formic Acid Electrooxidation, Jun-Ming Zhang, Xiao-Jie Zhang, Yao Chen, Ying-Jian Fan, You-Jun Fan, Jian-Feng Jia
Journal of Electrochemistry
Deep eutectic solvents (DESs) have been reported as a type of solvent for the controllable synthesis of metal nanostructures. Interestingly, flower-like palladium (Pd) nanoparticles composed of staggered nanosheets and nanospheres are spontaneously transformed into three-dimensional (3D) network nanostructures in choline chloride-urea DESs using ascorbic acid as a reducing agent. Systematic studies have been carried out to explore the formation mechanism, in which DESs itself acts as a solvent and soft template for the formation of 3D flower-like network nanostructures (FNNs). The amounts of hexadecyl trimethyl ammonium bromide and sodium hydroxide also play a crucial role in the anisotropic growth and …
Fe Nanoparticles Encapsulated In N-Doped Porous Carbon For Efficient Oxygen Reduction In Alkaline Media, Chun-Yan Li, Rui Zhang, Xiao-Jie Ba, Xiao-Le Jiang, Yao-Yue Yang
Fe Nanoparticles Encapsulated In N-Doped Porous Carbon For Efficient Oxygen Reduction In Alkaline Media, Chun-Yan Li, Rui Zhang, Xiao-Jie Ba, Xiao-Le Jiang, Yao-Yue Yang
Journal of Electrochemistry
Rational design and synthesis of non-precious-metal catalyst plays an important role in improving the activity and stability for oxygen reduction reaction (ORR) but remains a major challenge. In this work, we used a facile approach to synthesize iron nanoparticles encapsulated in nitrogen-doped porous carbon materials (Fe@N-C) from functionalized metal-organic frameworks (MOFs, MET-6). Embedding Fe nanoparticles into the carbon skeleton increases the graphitization degree and the proportion of graphitic N as well as promotes the formation of mesopores in the catalyst. The Fe@N-C-30 catalyst showed the excellent ORR activity in alkaline solutions (E0 = 0.97 V vs. RHE, E1/2 …
Multi-Mode Total Focusing Method (Mtfm) To Detect High-Temperature Hydrogen Attack (Htha) – A Review, Anjar Oktikawati, Rini Riastuti, Nursidi Yuanto
Multi-Mode Total Focusing Method (Mtfm) To Detect High-Temperature Hydrogen Attack (Htha) – A Review, Anjar Oktikawati, Rini Riastuti, Nursidi Yuanto
Journal of Materials Exploration and Findings
High temperature hydrogen attack (HTHA) is a commonly observed harm component in carbon steels exposed to high temperature and pressure in a hydrogen-rich environment. Hydrogen together with carbon responds to produce methane. The formation of methane bubbles in steel can lead to loss of fracture toughness and lead to intergranular cracking. The main challenge of this problem lies in early warning systems that can detect these bubble clusters before they reach the advanced stage. Several advanced ultrasonic inspections have been developed over the years due to the challenges of inspecting materials for defects and discontinuities. These cover time-of-flight diffraction (ToFD), …
Enhancing Compatibility And Mechanical Properties Of Natural Rubber Composites, Krisma Yessi Sianturi, Adam Febriyanto Nugraha, Belle Kristaura, Mochamad Chalid
Enhancing Compatibility And Mechanical Properties Of Natural Rubber Composites, Krisma Yessi Sianturi, Adam Febriyanto Nugraha, Belle Kristaura, Mochamad Chalid
Journal of Materials Exploration and Findings
Pure natural rubber (NR) exhibits low mechanical properties, necessitating the incorporation of additives like vulcanizing agents and fillers. Carbon black and silica, conventional fillers, are relatively expensive and not environmentally friendly. This study explores using Oil Palm Empty Fruit Bunch (OPEFB) fiber as an affordable, abundant, and biodegradable alternative filler for NR. However, compatibility issues arise between the nonpolar NR and the polar OPEFB fiber. A latex-starch hybrid coupling agent (CA (NR-St)) was added to the composite formulation to address this. NR, OPEFB fiber, and the coupling agent were mixed using an open roll mill with a 10 phr OPEFB …
Development Of Dynamic Risk-Based Inspection Using Forward Difference Approach For Pipe Failure Due To Uniform Corrosion, Jaka Fajar Fatriansyah, Zahra Nadia Nurullia, Andreas Federico, Dedi Priadi
Development Of Dynamic Risk-Based Inspection Using Forward Difference Approach For Pipe Failure Due To Uniform Corrosion, Jaka Fajar Fatriansyah, Zahra Nadia Nurullia, Andreas Federico, Dedi Priadi
Journal of Materials Exploration and Findings
The oil and gas industry is one of the world's largest and most influential energy contributors. All aspects involved in the operation of this industry are fundamental to be reviewed and managed correctly, especially by preventing or minimizing the failures that could occur. Uniform corrosion is the most common component failure mechanism that can cause failure in the oil and gas industry. The company's actions in managing and preventing the risk of this type of failure have a major role in the sustainability of the company due to the possibility of more significant impacts if the risk cannot be handled …
Utilization Of Cellulose Symbiotic Culture Of Bacteria And Yeast (Scoby) With Sweet Tea Media As Methylene Blue And Brilliant Green Biosorbent Material, Leonard Mateus Sigiro, Ahmad Maksum, Donanta Dhaneswara
Utilization Of Cellulose Symbiotic Culture Of Bacteria And Yeast (Scoby) With Sweet Tea Media As Methylene Blue And Brilliant Green Biosorbent Material, Leonard Mateus Sigiro, Ahmad Maksum, Donanta Dhaneswara
Journal of Materials Exploration and Findings
The cellulose from Symbiotic Culture of Bacteria and Yeast (SCOBY) can be used as a biosorbent for dye adsorption, such as Methylene Blue and Brilliant Green. This study used sweet tea with a 6% of sugar concentration and 14 days of fermentation time to synthesize biosorbent material from SCOBY. The results from this synthesis are then characterized using FTIR, SEM, and BET. From the result of characterization, it was found that SCOBY has pores formed from cellulose. The results of the average pore size are 1.5976nm with a pore volume of 0.229cc/g, while the specific surface area is 143.244m2/g. The …
Estimating Remaining Life And Fitness-For-Services Evaluation Of Fuel Piping Systems, Sekar Putri Purwidyasari, Ahmad Isni Kurniawan, Deni Ferdian
Estimating Remaining Life And Fitness-For-Services Evaluation Of Fuel Piping Systems, Sekar Putri Purwidyasari, Ahmad Isni Kurniawan, Deni Ferdian
Journal of Materials Exploration and Findings
Assets life extension are required to predict the design life expiry based on condition and effects of deterioration. The remaining life assessment will answer the questions about timing of the component or equipment will lead to failure and shall be evaluated by inspection and maintenance monitoring. This study elaborates process calculation and analysis by using remaining life assessment and fitness for services method according to API 579-1/ASME FFS-1 for process piping area. The result of remaining useful life estimation and estimated life has been proposed. There are 11 piping systems based on the condition monitoring with thickness measurements. The result …
Preface To The Special Issue On Lithium-Sulfur Batteries, Jia-Jia Chen, Ren-Jie Chen, Zhong Jin
Preface To The Special Issue On Lithium-Sulfur Batteries, Jia-Jia Chen, Ren-Jie Chen, Zhong Jin
Journal of Electrochemistry
No abstract provided.
Cobalt/Carbon Composites As Sulfur Hosts For High-Performance Lithium-Sulfur Batteries, Yun-Rui Yang, Huan-Huan Dong, Zhi-Qiang Hao, Xiang-Xi He, Zhuo Yang, Lin Li, Shu-Lei Chou
Cobalt/Carbon Composites As Sulfur Hosts For High-Performance Lithium-Sulfur Batteries, Yun-Rui Yang, Huan-Huan Dong, Zhi-Qiang Hao, Xiang-Xi He, Zhuo Yang, Lin Li, Shu-Lei Chou
Journal of Electrochemistry
Lithium-sulfur (Li-S) battery is one of the promising energy storage devices because of its high energy density. However, the sulfur cathode suffers from sluggish electrochemical reaction kinetics, slow charge transfer, large volume expansion and severe shuttle effect of lithium polysulfides inevitably resulting in low reversible capacity, poor rate performance and short cycle life, limiting its practical applications. Herein, the recent progress of cobalt/carbon composites, including cobalt nanoparticles and cobalt single atoms, as the sulfur host materials in Li-S batteries is overviewed. In general, cobalt plays the role of electrocatalyst, which inhibits the shuttle effect of lithium polysulfides, accelerates the electrochemical …
Recent Advances Of Functional Electrolyte Additives For Lithium-Sulfur Batteries, Xiu-Qing Zhang, Shuai Tang, Yong-Zhu Fu
Recent Advances Of Functional Electrolyte Additives For Lithium-Sulfur Batteries, Xiu-Qing Zhang, Shuai Tang, Yong-Zhu Fu
Journal of Electrochemistry
Lithium-sulfur (Li-S) batteries have become one of the most promising next-generation battery systems due to their high energy density and low cost. However, the application of Li-S batteries still faces critical challenges, such as the low conductivities of S and Li2S, shuttle effect of polysulfides and dendrite growth of Li, etc. The optimization of the electrolyte can ameliorate the electrolyte|electrode interphase, conveniently regulating the parasitic reaction and improving the performance of the resultant batteries. The functional additives in electrolytes provide chances to tune the interphase and even the redox mechanism to improve the performance of the batteries. In …
Ultraviolet-Initiated In-Situ Cross-Linking Of Multifunctional Binder Backbones Enables Robust Lithium-Sulfur Batteries, Sha Li, Xiao Zhan, Gu-Lian Wang, Hui-Qun Wang, Wei-Ming Xiong, Li Zhang
Ultraviolet-Initiated In-Situ Cross-Linking Of Multifunctional Binder Backbones Enables Robust Lithium-Sulfur Batteries, Sha Li, Xiao Zhan, Gu-Lian Wang, Hui-Qun Wang, Wei-Ming Xiong, Li Zhang
Journal of Electrochemistry
Lithium-sulfur (Li-S) batteries show attractive prospects owing to their high theoretical energy density, but their commercialization still faces such challenges as lithium polysulfides shuttling, severe volume change and considerable polarization. These stubborn issues place higher demands on each component in the battery, such as the development of multifunctional binders with superior mechanical properties. Herein, ethoxylated trimethylolpropane triacrylate was firstly introduced into sulfur cathodes, and in-situ cross-linked by ultraviolet (UV) curing combined with traditional polyvinylidene difluoride binder (i.e., forming a binary binder, denoted as c-ETPTA/PVDF) to construct high-loading and durable Li-S batteries. The covalently cross-linked ETPTA framework not …
Metals And Alloys As Catalytic Hosts Of Sulfur Cathode For Lithium-Sulfur Batteries, Zhen-Yu Wang, Xue-Ping Gao
Metals And Alloys As Catalytic Hosts Of Sulfur Cathode For Lithium-Sulfur Batteries, Zhen-Yu Wang, Xue-Ping Gao
Journal of Electrochemistry
Lithium-sulfur batteries are recognized as one of the most promising next-generation energy storage devices, owing to the high theoretical energy density of 2600 Wh·kg–1. However, their application has been seriously hindered by the sluggish electrochemical reaction kinetics of elemental sulfur and discharged products (Li2S2/Li2S), and the notorious “shuttle effect” of soluble intermediate lithium polysulfide species, leading to poor cycle stability, low sulfur utilization and inferior coulombic efficiency. Introducing catalytic hosts into sulfur cathode is an efficient path to propel the conversion of sulfur-contained species, thus preventing the dissolution and loss of active-sulfur …
Modifying Barium Hexaferrite Magnets By Adding Sol-Gel Synthesized Cobalt Ferrite Phase, Thanida Charoensuk, Wannisa Thongsamrit, Anuchit Hunyek, Komkrich Chokprasombat, Pongsakorn Jantaratana, Chitnarong Sirisathitkul
Modifying Barium Hexaferrite Magnets By Adding Sol-Gel Synthesized Cobalt Ferrite Phase, Thanida Charoensuk, Wannisa Thongsamrit, Anuchit Hunyek, Komkrich Chokprasombat, Pongsakorn Jantaratana, Chitnarong Sirisathitkul
Karbala International Journal of Modern Science
Combining various types of ferrites brings about magnetic properties desirable for different applications. This study aims to modify barium hexaferrite (BaFe12O19) by physically mixing it with cobalt ferrite (CoFe2O4). BaFe12O19/CoFe2O4 magnets were produced by ball-milling and pressing sol-gel-derived ferrite powders. The ferrite composites showed variations in magnetic properties from BaFe12O19 magnets with a saturation magnetization of 69.46 emu/g and a maximum energy product of 0.4529 MGOe. For the BaFe12O19:CoFe2O4 weight ratio of 4:1, both satura-tion …
A Review On Solid-State Li-S Battery: From The Conversion Mechanism Of Sulfur To Engineering Design, Huan-Huan Jia, Chen-Ji Hu, Yi-Xiao Zhang, Li-Wei Chen
A Review On Solid-State Li-S Battery: From The Conversion Mechanism Of Sulfur To Engineering Design, Huan-Huan Jia, Chen-Ji Hu, Yi-Xiao Zhang, Li-Wei Chen
Journal of Electrochemistry
Lithium-sulfur (Li-S) batteries attract sustained attention because of their ultrahigh theoretical energy density of 2567 Wh·kg–1 and the actual value over 600 Wh·kg–1. Solid-state Li-S batteries (SSLSBs) emerge in the recent two decades because of the enhanced safety when compared to the liquid system. As for the SSLSBs, except for the difference in the conversion mechanism induced by the cathode materials themselves, the physical-chemical property of solid electrolytes (SEs) also significantly affects their electrochemical behaviors. On account of various reported Li-S batteries, the advantages and disadvantages in performance and the failure mechanism are discussed in this review. …
Coni-Based Bimetal-Organic Framework Derived Carbon Composites Multifunctionally Modified Separators For Lithium-Sulfur Batteries, Yan-Jie Wang, Hong-Yu Cheng, Ji-Yue Hou, Wen-Hao Yang, Rong-Wei Huang, Zhi-Cong Ni, Zi-Yi Zhu, Ying Wang, Ke-Yi Wei, Yi-Yong Zhang, Xue Li
Coni-Based Bimetal-Organic Framework Derived Carbon Composites Multifunctionally Modified Separators For Lithium-Sulfur Batteries, Yan-Jie Wang, Hong-Yu Cheng, Ji-Yue Hou, Wen-Hao Yang, Rong-Wei Huang, Zhi-Cong Ni, Zi-Yi Zhu, Ying Wang, Ke-Yi Wei, Yi-Yong Zhang, Xue Li
Journal of Electrochemistry
The commercial application of lithium-sulfur batteries (LSB) is still limited by the irreversible capacity fading caused by the shuttle of lithium polysulfides (LIPS). To address this issue, a bimetal (nickel, cobalt)-organic framework (MOF) derived carbon, (Ni, Co)/C, was prepared to modify the separator. The multifunctionally modified separator effectively captures LIPS, ensuring the stability and reversibility of sulfur fixation, while providing catalytic activity and improving ionic conductivity. The cobalt metal has a larger coordination number, more pore structure distribution, larger specific surface area, more surface C=O, and smaller particle size to achieve a large and rapid chemical sulfur fixation. The high …
Bimetallic Compound Catalysts With Multiple Active Centers For Accelerated Polysulfide Conversion In Li-S Batteries, Wu-Xing Hua, Jing-Yi Xia, Zhong-Hao Hu, Huan Li, Wei Lv, Quan-Hong Yang
Bimetallic Compound Catalysts With Multiple Active Centers For Accelerated Polysulfide Conversion In Li-S Batteries, Wu-Xing Hua, Jing-Yi Xia, Zhong-Hao Hu, Huan Li, Wei Lv, Quan-Hong Yang
Journal of Electrochemistry
Practical applications of lithium-sulfur (Li-S) batteries are hindered mainly by the low sulfur utilization and severe capacity fading derived from the polysulfide shuttling. Catalysis is an effective remedy to those problems by promoting the conversion of polysulfides to reduce their accumulation in the electrolyte, which needs the catalyst to have efficient adsorption ability to soluble polysulfides and high activity for their conversion. In this work, we have proposed a bimetallic compound of NiCo2S4 anchored onto sulfur-doped graphene (NCS@SG) to fabricate a catalytic interlayer for Li-S batteries. Compared to CoS, the NiCo2S4 demonstrated much higher …
Recent Research Progresses Of Solid-State Lithium-Sulfur Batteries, Yu Luo, Ru-Qin Ma, Zheng-Liang Gong, Yong Yang
Recent Research Progresses Of Solid-State Lithium-Sulfur Batteries, Yu Luo, Ru-Qin Ma, Zheng-Liang Gong, Yong Yang
Journal of Electrochemistry
All solid-state lithium-sulfur batteries (ASSLSBs) are considered to be one of the most promising next-generation energy storage systems, due to the promises of high energy density and safety. Although the use of solid-state electrolytes could effectively suppress the "shuttle effect" and self-discharge of the conventional liquid lithium-sulfur (Li-S) battery, the commercialization of ASSLSBs has been seriously hampered by the electrolyte degradation, electrode/electrolyte interfacial deterioration, electrochemo-mechanical failure, lithium dendrite growth and electrode pulverization, etc. This paper provides a comprehensive review of recent research progresses on the solid-state electrolytes, sulfur-containing composite cathodes, lithium metal and lithium alloy anodes, and electrode/electrolyte interfaces in …
Preface To The Special Issue On Lithium-Sulfur Batteries, Jia-Jia Chen, Ren-Jie Chen, Zhong Jin
Preface To The Special Issue On Lithium-Sulfur Batteries, Jia-Jia Chen, Ren-Jie Chen, Zhong Jin
Journal of Electrochemistry
No abstract provided.
Thermal And Electrical Properties Of Nanocrystalline Superionic Naxcu1.75s (X=0.1, 0.15, 0.2, 25) Compounds, M.M. Kubenova, K.A. Kuterbekov, M.Kh. Balapanov, R.Kh. Ishembetov, B.M. Akhmetgaliev, A.M. Kabyshev, K.Zh. Bekmyrza, M.Kh. Zeleev, R.Sh. Palymbetov, B.U. Baikhozhaeva
Thermal And Electrical Properties Of Nanocrystalline Superionic Naxcu1.75s (X=0.1, 0.15, 0.2, 25) Compounds, M.M. Kubenova, K.A. Kuterbekov, M.Kh. Balapanov, R.Kh. Ishembetov, B.M. Akhmetgaliev, A.M. Kabyshev, K.Zh. Bekmyrza, M.Kh. Zeleev, R.Sh. Palymbetov, B.U. Baikhozhaeva
Eurasian Journal of Physics and Functional Materials
The paper presents the results of the studies of thermal properties of nanocrystalline superionic NaxCu1.75S (x = 0.1, 0.15, 0.2, 25) compositions, and preliminary results of Na0.1Cu1.75S using as energy stored cathode material in Na-ion half-cell with NaPF6 electrolyte and Na anode. The compositions contain a few copper sulfide phases: monoclinic chalcocite Cu2S, orthorhombic anilite Cu1.75S, triclinic roxbyite Cu1.74÷1.82S, also the compositions can contain monoclinic Na2Cu4S3, orthorhombic Na2S, cubic Cu2O as inclusion phases. The sizes …
Electron-Hole Trapping Centers In Na2so4 With A Transition Metal Impurity Mn, T.N. Nurakhmetov, T.T. Alibay, S. Pazylbek, A.M. Zhunusbekov, B.M. Sadykova, D.A. Tolekov, R.K. Shamieva, A.S. Nurpeissov
Electron-Hole Trapping Centers In Na2so4 With A Transition Metal Impurity Mn, T.N. Nurakhmetov, T.T. Alibay, S. Pazylbek, A.M. Zhunusbekov, B.M. Sadykova, D.A. Tolekov, R.K. Shamieva, A.S. Nurpeissov
Eurasian Journal of Physics and Functional Materials
The Na2SO4 samples were obtained by slow evaporation method. The mechanisms of the formation of electron and hole trapping centers are investigated by spectroscopic methods. Intrinsic recombination emission of 2.9–3.1 eV and impurity emission of 1.85 eV are excited at 4.0–4.5 eV. Intrinsic SO3−4−SO−4 and impurity Mn+ − SO−4 trapping centers were revealed. The local levels corresponding between the electron and hole trapping center are 4.0–4.5 eV. The decay of intrinsic and impurity trapping centers was recorded at temperatures of 130–150 K and 280–350 K.
Luminescent Properties Of Baxmg(2−X)F4:W Ceramics, T.A. Koketai, A.V. Strelkova, A.M. Zhunusbekov, Zh.T. Karipbayev, L.A. Lisitsyna, A.M. Chakin
Luminescent Properties Of Baxmg(2−X)F4:W Ceramics, T.A. Koketai, A.V. Strelkova, A.M. Zhunusbekov, Zh.T. Karipbayev, L.A. Lisitsyna, A.M. Chakin
Eurasian Journal of Physics and Functional Materials
Ceramics based on alkaline earth metal fluorides activated by tungsten has been obtained by radiation synthesis. The synthesis was realized by direct action on the mixture with an activator of a powerful flow of high-energy electrons without the use of any additives to facilitate the synthesis. It has been established that the resulting ceramics have luminescent properties characteristic of tungsten-activated materials based on metal fluorides.
Synthesis Of Silver Nanoparticles By Green Method Using Ligustrum Sinense To Study Their Structural And Photoluminescence Properties, Sh.A. Khan, S. Patel, P. Shukla, R. Kumar, R. Dixit
Synthesis Of Silver Nanoparticles By Green Method Using Ligustrum Sinense To Study Their Structural And Photoluminescence Properties, Sh.A. Khan, S. Patel, P. Shukla, R. Kumar, R. Dixit
Eurasian Journal of Physics and Functional Materials
Photoelectronic devices such as solar cells require an electrolyte with electrode that has high energy conversion efficiency. Hence, ionic electrolyte and blend polymer composite electrolyte helps in ion regeneration and improving the performance of the device. Introduction of metal nanoparticles in the polymers such as the PMMA, PVDF provides this enhancement of performance. Nanoparticles are manufactured in an eco-friendly manner and characterized by UV and XRD. In this work we present the possibility that could be explored with the incorporation of nanoparticles and also see the synthesis process of green nanoparticles. The excitons dissociation in these devices could increase with …
Super–Protonic Conductors For Solid Acid Fuel Cells (Safcs): A Review, Sh. Afroze, Md S. Reza, M.R. Somalu, A.K. Azad
Super–Protonic Conductors For Solid Acid Fuel Cells (Safcs): A Review, Sh. Afroze, Md S. Reza, M.R. Somalu, A.K. Azad
Eurasian Journal of Physics and Functional Materials
Fuel cell holds the promise of being environmentally friendly and becomes one of the alternatives for renewable energy. Solid acids have super–protonic behavior which allows them to become conductors. It can function at high temperatures. Hydration, on the other hand, may be used to improve the performance of the solid acid. Moreover, the conductivity, stability, and crystal structure of the solid acid compounds of the fuel cell are all influenced by the size of the electrolyte membrane. Very few works have been done on solid acid fuel cells which are still under investigation to make it one viable as well …