Electrochemical Behavior Of Europium(Ⅲ) In 1-Butyl-3-Methylimidazolium,
2010
China Institute of Atomic Energy,Department of Radiochemistry,Beijing 102413,China;
Electrochemical Behavior Of Europium(Ⅲ) In 1-Butyl-3-Methylimidazolium, Qiu-Yue Zhang, Hui He, Xiao-Hong Huang, Guo-An Ye
Journal of Electrochemistry
The electrochemical behavior of EuCl3 in 1-butyl-3-methylimidazolium chlorid([BMIM]Cl) has been investigated in the temperature range of 328 ～ 348 K by cyclic voltammetry.Influences of scan speed and temperature in [BMIM]Cl have been examined.The electrochemical window of [BMIM]Cl was-1.7 V ～ 0.80 V(vs.Ag/AgCl),when the working electrode was glassy carbon electrode.Eu3+ in[BMIM]Cl underwent a single step one-electron transfer reduction to Eu2 +,which is quasi-reversible reaction controlled by both electron transfer and diffusion of ions.The diffusion coefficient of Eu3 + in [BMIM]Cl increased with increase of temperature from 3.75 × 10-9 cm2 /s at 328 K …
Application Of Sol-Gel Technology In The Of Activation Process Of Chemical Plating Pretreatment,
2010
Key Laboratory of Science & Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;
Application Of Sol-Gel Technology In The Of Activation Process Of Chemical Plating Pretreatment, Lin Zhang, Wei Wang, Qian-Zhen Wu
Journal of Electrochemistry
Using KH-550 as precursors,gel thin films were formed on fabric by sol-gel method.By complexed with palladium ions due to the presences of amido and hydroxide in the gel thin films,the aggregation of palladium particles was inhibited.Therefore,Palladium could exhibit better catalytic activity in the process of electroless plating.The surface morphology of fabric was observed by SPM and SEM.Campared with the traditional pretreatment process,no SnCl2 was needed.This method reduced pollution,shortened process flow and reduced the amount of noble metals.
Applications Of Block Copolymer Films In The Field Of Electrochemical Energy Systems,
2010
State Key Laboratory of Electronic Thin Film and Integrated Device,School of Microelectronic and Solid-state Electronic,University of Electronic Science and Technology of China,Chengdu 610054,China;
Applications Of Block Copolymer Films In The Field Of Electrochemical Energy Systems, Jing-Ze Li, Guo-Guang Chen, Di Mei, Wei Zou, Jian-Wen Li, Motonori Komura, Tomokazu Iyoda
Journal of Electrochemistry
A new series of amphiphilic liquid crystalline block copolymer thin films,having normally aligned and highly ordered nanocylinder array,were functionalized as anisotropic ion conducting materials by selectively infiltration.These ion-active nanocylinders are coaxially aligned and hexagonally arranged in a large area,which might be used as novel types of electrolyte films for electrochemical energy systems such as lithium ion battery,fuel cell,etc.Since the ordered cylinders can carry on and store the ions,the block copolymer films can be utilized as the advanced template to fabricate the ordered array of nanoporous,nanoparticles,and nanowires for the potential application in lithium ion battery as three dimensional electrode materials.
Preparation And Characterization Of Sulfur/Mesoprous Carbon Composite Cathodes,
2010
College of Chemistry and Molecular Sciences,Wuhan University,Wuhan,430072,China;
Preparation And Characterization Of Sulfur/Mesoprous Carbon Composite Cathodes, Wen-Hua Zhang, Yao Chen, Xin-Ping Ai, Yu-Liang Cao
Journal of Electrochemistry
A sulfur/mesoporous carbon composite was prepared by thermally treating a mixture of sublimed sulfur and mesoporous carbon. The microstructure of the mesoporous carbon was characterized by BET analysis and X-ray diffraction(XRD). The electrochemical performance of the S/C composite as cathode materials was evaluated by the galvanostatic method. The results confirmed that the mesoporous carbon could not only greatly enhance the electrochemical activity of sulfur electrode, but also effectively confine the diffusion of dissolved polysulfides in organic electrolyte. As a result,the S/C composites showed high capacity, good cycle performance and excellent rate capability. The specific capacity of the S/C composite was …
Preparation And Characterizations Of Li3V2(Po4)3 Cathode Material For Lithium Ion Batteries,
2010
College of Physics,Beihua University,Jilin 132013,Jilin,China;College of Materials Science and Engineering,Jilin University,Changchun 130012,China;
Preparation And Characterizations Of Li3V2(Po4)3 Cathode Material For Lithium Ion Batteries, Hong Chen, Tao Jiang, Chun-Zhong Wang, Gang Chen, Ying-Jin Wei
Journal of Electrochemistry
The carbon-coated Li3V2(PO4)3 was prepared by carbothermal reduction method.The structural and morphological properties of the material were studied by X-ray diffraction,FTIR and transmission electron microscopy.The synthesized material was a pure phase of Li3V2(PO4)3,with the particle size of about 100 nm.The values of Li ion diffusion coefficient of the material in the potential window of 3.0 ～ 4.3 V were nearly 3 orders larger than those in 3.0 ～ 4.8 V.In addition,the charge-transfer resistances in 3.0 ～ 4.3 V were much smaller than those in 3.0 …
Investigation Of Ceo2 As Cathode Electrocatalyst For Direct Borohydride Fuel Cell,
2010
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China;
Investigation Of Ceo2 As Cathode Electrocatalyst For Direct Borohydride Fuel Cell, Xue-Min Ni, Ya-Dong Wang, Mu Pan
Journal of Electrochemistry
The performance of CeO2 as oxygen reduction electrocatalyst in direct borohydride fuel cell was investigated.The experimental results indicate that CeO2 shows significant electrocatalytic performance for oxygen reduction and exhibits no observed promotion effect on hydrolysis or electro-oxidation of BH4-.The power density of experimental one-compartment fuel cell with CeO2 as cathode electrocatalyst can reach a 67.8 mW·cm-2 at room temperature.
Preparation And Electrochemical Behavior Of Li4Ti5O12 Nanosheets As Anode Material For Lithium Ion Battery,
2010
School of Chemistry and Chemical Technology,Shanghai Jiao Tong University,Shanghai 200240,China;
Preparation And Electrochemical Behavior Of Li4Ti5O12 Nanosheets As Anode Material For Lithium Ion Battery, Yi-Fei Wang, Yu-Feng Tang, Zheng Qiu, Li Yang
Journal of Electrochemistry
Spinel lithium titanate(Li4Ti5O12) nanosheets with a size range of 200 ～400 nm were synthesized by hydrothermal process from the amorphous hydrous titanium oxide precursors.The as-prepared products were characterized by X-ray powder diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The electrochemical behaviors of Li4Ti5O12 electrode in conventional organic electrolyte and ionic liquid electrolyte were investigated by using cyclic voltammetry,galvanostatic charge-discharge and AC impedance techniques.The experimental results indicate that the as-prepared nanostructured Li4Ti5O12,evaluated as anode material,exhibited good reversibility and cycle performance.It is expected to be a …
Synthesis Of High-Performance Lini1/3Co1/3Mn1/3O2 Cathode Materials Via Azeotropic Distillation Method,
2010
School of Materials Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;
Synthesis Of High-Performance Lini1/3Co1/3Mn1/3O2 Cathode Materials Via Azeotropic Distillation Method, Sheng-An Xia, Li-Xia Yuan, Ze Yang, Zhao-Hui Wang, Yun-Hui Huang, Shuang Li, Wu-Xing Zhang, Ya-Bin Meng, Wei-Gong Zheng
Journal of Electrochemistry
Layered LiNi1/3Co1/3Mn1/3O2 is one of the most promising alternative materials for LiCoO2 in lithium ion batteries due to its low cost,large capacity and excellent cyclability.In this paper,LiNi1/3Co1/3Mn1/3O2 was synthesized via azeotropic distillation method with isobutyl alcohol as an azeotropic agent.The structure and surface morphology were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM),respectively.The as-prepared LiNi1/3Co1/3Mn1/3O2 shows a layered α-NaFeO2 structure;the particles are small and uniformly distributed.As compared with the sample prepared by traditional method,the present cathode material …
Electrochemical Behavior Of Co-Ru Composite In Alkaline Solution,
2010
Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China;
Electrochemical Behavior Of Co-Ru Composite In Alkaline Solution, Su-Mei Yao, Guo-Chun Li, Xue-Ping Gao
Journal of Electrochemistry
The electrochemical properties of Ru doped cobalt hydroxides synthesized via homogeneous chemical co-precipitation were investigated in 6 mol·L-1 KOH solution by galvanostatic charge-discharge process and cyclic voltammetry(CV).It is demonstrated that Ru doped cobalt hydroxides exhibited good capacitive characteristic and high specific capacitance.The sample with a Co/Ru molar ratio of 8 /1 shows the optimized electrochemical performance,including capacitive property and discharge capacity.The microstructure and morphology of the obtained Ru doped hydroxides were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM).The amorphous structure of ruthenium dioxide nanoparticles and single-crystal structure of Co(OH)2 platelets were confirmed.Based on a structure analysis and …
Studied Corrosion Behaviors Of Reinforcing Steel In Concrete By A Single-Dimensional Array Electrode,
2010
State Key Laboratory for Physical Chemistry of Solid Surfaces,and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China;
Studied Corrosion Behaviors Of Reinforcing Steel In Concrete By A Single-Dimensional Array Electrode, Lan-Qiang Li, Shi-Gang Dong, Rong-Gui Du, Chang-Jian Lin
Journal of Electrochemistry
A single-dimensional array electrode was developed as a new electrochemical technique to image corrosion potential,galvanic current and polarization curves of reinforcing steel in concrete during corrosion process.Combining with the polarization behavior for each micro-electrode,the interactions between corrosion macrocell and corrosion microcell of the steel in concrete were evaluated.It was noticed that the corrosion macrocell and microcell occurred independently in difference regions at the initial stage of corrosion.The corrosion macrocell current can be in situ followed by corrosion potential imaging.The corrosion propagation of steel in concrete is closely related to the interactions between corrosion macrocell and corrosion microcell.
The Electrochemical Characteristics Of Cpo-Pll/Gc Electrode,
2010
Life and Environment Science College,Shanghai Normal University,Shanghai 200234,China;
The Electrochemical Characteristics Of Cpo-Pll/Gc Electrode, Wen Zhao, Xia-Qin Wu, Zhong-Qing Lu, Wen-Jing Hou, He-Xing Li
Journal of Electrochemistry
Poly-L-lysine(PLL) was electropolymerized onto the surface of glassy carbon(GC) electrode.1[(3-dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride(EDC) was used as a Cross-linking agent to immobilized Chloroperoxidase(CPO) onto the PLL/GC electrode.A pair of well-defined redox peaks was observed at CPO-PLL/GC electrode,which clearly suggested that PLL can promote the direct electron transfer between the CPO and the GC electrodes.The cyclic voltammetry results also showed that the electron transfer at CPO-PLL/GC is a surface adsorption-controlled quasi-reversible process,which is accompanied with proton transfer.The CPO-PLL/GC electrode exhibited a good electrochemical stability and excellently electrocatalytic activity for electrochemical reduction of O2.
Electrosynthesis Of P-Aminobenzenearsenic Acid,
2010
State Key Laboratory Breeding Base of Green Chemisitry Synthesis Technology,Zhejiang University of Technology,Hangzhou 310032,China;
Electrosynthesis Of P-Aminobenzenearsenic Acid, Chun-An Ma, Qin-An Zheng, Qiang Zhou, Ying-Hua Xu
Journal of Electrochemistry
The electrochemical reduction of p-nitrophenyl arsonit acid to p-aminobenzenearsenic acid was studied using controlled-current electrolysis.The results showed that the yield of p-aminobenzenearsenic acid was determinated by the following factors:the concentrations of sulphuric acid,the amount of additive,temperature and the concentrations of p-nitrophenyl arsenic acid.The optimum electrolytic conditions were obtained to be is 10% H2SO4,1% NaCl,80 ℃,25 g/350 mL p-nitrophenyl arsenic acid and 10 A·dm-2.The yield of arsanilic acid could be reached 64.7% under the optimum electrolytic conditions.
Electrochemical Corrosion Behavior Of Tio2/Ha Composite Coating On Medical Titanium In Tyrode's Physiological Solution,
2010
State Key Laboratory for Physical Chemistry of Solid Surfaces,and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China;
Electrochemical Corrosion Behavior Of Tio2/Ha Composite Coating On Medical Titanium In Tyrode's Physiological Solution, Li-Li Kong, Long-Xiang Lin, Rong-Gang Hu, Fan Zhang, Chang-Jian Lin
Journal of Electrochemistry
Titanium and its alloys have been widely used as medical implant materials because of their good mechanical properties and biocompatibility.However,the physiological corrosion of metal will release metal ions,resulting in toxic and side effects.In this paper,in order to improve the corrosion resistance of titanium,and to enhance its bioactivity and osseointegration,the surface modification of titamum were performed.Using eletrochemical methods Tafel polarization and electrochemical impedance spectroscopy(EIS) were applied to study the electrochemical corrosion behavior of TiO2 /HA composite coating.It is indicated that the corrosion resistance of the prepared TiO2 /Ti material in Tyrode's physiological solution is improved because of the enhanced …
Electrocatalytic Reduction Of L-Cystine At Pb/Nanotio2 Film Electrode,
2010
Anhui Key Laboratory of Functional Molecular Solids & Molecular Based Materials,College of Chemistry and Materials Science,Anhui Normal University,Wuhu 241000,Anhui,China;
Electrocatalytic Reduction Of L-Cystine At Pb/Nanotio2 Film Electrode, Dao-Bao Chu, Feng Wang, Ying Xiao, Xue-Jiao Zhang
Journal of Electrochemistry
The nanoporous Ti-based TiO2 films electrodes modified with Pb particles(Pb/nanoTiO2) were prepared by using anodization and potentiostatic electro-deposition.The optimum deposition conditions were determined by comparing with various deposition potentials and time.The SEM analyses indicated that the TiO2 films were homogeneous nanoporous structure,and the Pb particles well dispersed on the TiO2 films.The L-cystine electrocatalytic activity reduction on the Pb/nanoTiO2 film electrodes was investigated by cyclic voltammetry and Chronoamperometric curves.The results showed that this type of the electrode posseses high acticity and stability.
Cobalt-Doped Todorokite Prepared By Refluxing At Atmospheric Pressure As Lithium-Ion Battery Cathode,
2010
Key Laboratory of Subtropical Agriculture Resource and Environment,Ministry of Agriculture,Huazhong Agricultural University,Wuhan430070,China;
Cobalt-Doped Todorokite Prepared By Refluxing At Atmospheric Pressure As Lithium-Ion Battery Cathode, Rui-Qi Li, Chun-Hua Song, Chao Xu, Li-Xing Tu, Guo-Hong Qiu, Fan Liu
Journal of Electrochemistry
Cobalt-doped todorokites were prepared by refluxing at atmospheric pressure,and then charactered by X-ray diffraction(XRD),thermogravimetry(TG) and the analysis of chemical compositions.These measurements showed that all of the refluxing products were single phase of todorokites and the structure formulas were MgxCoyMnOz·nH2O,where 0.18 ≤ x ≤ 0.22,0 ≤ y ≤ 0.24,2.10 ≤ z ≤ 2.53,and 0.35 ≤ n ≤0.73.The electrochemical characteristics of cobalt-doped todorokites were examined as lithium insertion hosts for cathodes in rechargeable lithium batteries.The first discharge capacity of undoped todorokite electrode was 211 mAh/g and the discharge capacity became 37 mAh/g after 30 …
Electrochemical Capacitance Of Mno2 /Pani Composite,
2010
College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Electrochemical Capacitance Of Mno2 /Pani Composite, Xiao-Cun Xu, Kai-Yu Liu, Zhi-Gang Yin, Zhe Sun, Geng Su
Journal of Electrochemistry
Nano-MnO2 was prepared by using P123 as a soft template.The MnO2 /polyaniline composite was further prepared by polymerization of aniline with the nano-MnO2 in acidic conditions and was investigated by XRD and IR.The morphology of nano-MnO2 observed by SEM was changed with the introduction of aniline.The electrochemical properties of MnO2 /PANI electrode were investigated using cyclic voltammetry,galvanostatic charge-discharge and electrochemical impedance spectroscopy.The specific capacitance of MnO2 /PANI electrode could reach as high as 190.8 F·g-1,which decayed only 4.7% over 500 cycles.And the coulombic efficiency has been maintained at above 97%.
Study Of Electrodes Modified With Hybrid Copper Cobalt Hexacyanoferrate-Mwcnts Composites,
2010
College of Material Science and Engineering,Sichuan University,Chengdu,610064,China;
Study Of Electrodes Modified With Hybrid Copper Cobalt Hexacyanoferrate-Mwcnts Composites, Shan Jiang, Yun Zhang, Xiao-Yan Wang, Xiao-Fei Yao
Journal of Electrochemistry
The hybrid modified electrodes were obtained by electrochemical deposition of copper-cobalt hexacyanoferrate(CuCoHCF) /multi-walled carbon nanotubes(MWCNTs) on the surface of glassy carbon electrode.The effects of the amount of MWCNTs and composition of electrolyte on the properties of modified electrode had been researched.The copper cobalt hexacyanoferrate-MWCNTs modified electrodes show excellent electrochemical properties compared with that modified only copper-cobalt hexacyanoferrate.The CuCoHCF-MWCNTs/GCE exhibits obvious electrocatalytic activity towards oxidation of hydrogen peroxide.The oxidation peak current increased linearly with the concentration of hydrogen peroxide in the range of 3.16 × 10-5 ～ 2.92 × 10-3 mol· L-1.The linear equation is given up …
Fabrication And Characterization Of The Ni-Scsz Composite Anodes With A Lscm-Ceo2 Catalyst Layer In Thin Film Sofc,
2010
Institute of Fuel Cell,Shanghai Jiaotong University,Shanghai 200240,China;
Fabrication And Characterization Of The Ni-Scsz Composite Anodes With A Lscm-Ceo2 Catalyst Layer In Thin Film Sofc, Yun-Yun Wang, Bo Huang, Xin-Jian Zhu, Wan-Qi Hu, Qing-Chun Yu
Journal of Electrochemistry
Solid oxide full cell(SOFC) running directly on hydrocarbon fuels has attracted much attention in recent years. In this paper, a dual-layer structure anode was fabricated by tape casting and screen printing method. The addition of a LSCM-CeO2 catalyst layer to the supported anode surface yielded better performance in ethanol fuel. The maximum power density reached 710 and 669 mW/cm2 at 850 ℃ running on hydrogen gas steam and ethanol steam,respectively. No significant degradation in performance has been observed after 216 h of cell testing when the Ni-ScSZ13 anode was exposed to the ethanol steam at 700 ℃. Very …
Development Of Novel Synthetic Methodologies And Their Use In Approaches For The Preparation Of Lactacystin, Lepadiformine And A Giardia Lamblia Fructose-1,6-Bisphosphate Aldolase Inhibitor,
2010
University of New Mexico
Development Of Novel Synthetic Methodologies And Their Use In Approaches For The Preparation Of Lactacystin, Lepadiformine And A Giardia Lamblia Fructose-1,6-Bisphosphate Aldolase Inhibitor, Jiwen Zou
Chemistry and Chemical Biology ETDs
The investigations carried out in my doctoral studies focus on (1) applications of pyridinium salt photochemical and tandem ene-yne-ene metathesis reactions to the synthesis of the natural products (+)-lactacystin and lepadiformine C, and (2) the preparation of a novel inhibitor for the class II Giardia lamblia fructose-1,6-bisphosphate aldolase. New developments in the area of pyridinium salt photochemistry were explored in the context of approaches to the natural product (+)-lactacystin. The results of this effort show that irradiation of a substituted 1,2-cyclopenta-fused pyridinium salt in aqueous solution followed by treatment with sodium bicarbonate leads to selective production of an unusual, structural …
Investigation Of Co2 Insertion Into Lanthanide Amides, Alkoxides, And Mixed Amide/Alkoxides,
2010
University of New Mexico
Investigation Of Co2 Insertion Into Lanthanide Amides, Alkoxides, And Mixed Amide/Alkoxides, Leigh Anna M. Ottley
Chemistry and Chemical Biology ETDs
A novel set of lanthanide (Ln) alkoxycarbonates, [Ln(μ-CO2-DBP)(DBP)2]2 where Ln = lanthanide; and DBP = OC6H3-2,6-C(CH3)3, were isolated from a systematic study of the insertion of CO2(g) (referred to as CO2) into the Ln-O bonds of a series of new lanthanide alkoxides, Ln(OR)3. This study was undertaken to determine if the deleterious metal carbonate [M(CO3)y] formation that promotes higher thermal budgets during processing could be avoided. While processing controls can reduce the formation of the M(CO3) …
