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 to 1.32 × 10-8 cm2 /s at …
Electrocatalytic Reduction Of L-Cystine At Pb/Nanotio_2 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/Nanotio_2 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.
Electrochemical Capacitance Of Mno_2 /Pani Composite,
2010
College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Electrochemical Capacitance Of Mno_2 /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 ip(μA) = 0.5529 + …
The Synthesise Of Electron-Conducting Redox Hydrogel And Its Application In Microbial Fuel Cell,
2010
College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 730042,Hubei,China;
The Synthesise Of Electron-Conducting Redox Hydrogel And Its Application In Microbial Fuel Cell, Kai-Peng Wang, Sheng-Li Chen
Journal of Electrochemistry
Efficient electron transfer between the microbe and the anode is key for the electricity generation in Microbial fuel cell(MFC).Through the modification of anode,the rate of electron transfer can be accelerated,therefore the performance of MFC can be enhanced.In this paper,we report the synthesis of a type of electronconducting and bio-compatible redox hydrogel and its application.The hydrogel consists of poly(4-vinylpyridine) as backbone and neutral red as the redox center.By immobiliazing neutral red on the backbone through covalent bond,the secondary contamination due to the soluble redox mediator to external environment can be prevented.MFCs using the hydrogel-modified carbon anode significantly exhibit shorter acclimation period,and …
Electrochemical Properties Of Ni(Oh)_2 Doped By Nio,
2010
School of Chemical Engineering and Environmental Science,Beijing Institute of Technology,Beijing 100081,China;
Electrochemical Properties Of Ni(Oh)_2 Doped By Nio, Fei-Biao Chen, Bo-Rong Wu, Wei-Feng An, Zhao-Jun Yang, Feng Wu, Shi Chen
Journal of Electrochemistry
The Ni(OH)2 cathode material of MH/Ni was doped by NiO,which behaves as a capacitor and can improve the charge-discharge rate capacity of Ni(OH)2.The electrochemical properties of Ni(OH)2 was characterized by charge-discharge curves and cyclic voltammetry.The results showed that the material had the best discharge property when doped by 5% NiO,and the discharge specific capacity could reach 310.1 mAh/g at 0.2 C rate and remianed 79.5% at 3 C rate.The difference oxidation and reduction potentials between the of the battery was 164 mV when the Ni(OH)2 was doped by 5% NiO,which showed a good cyclic property.
Self-Activating Safety Mechanisms For Li-Ion Batteries,
2010
College of Chemistry and Molecular Sciences,Hubei Key Lab.of Eletrochemical Power Sources,Wuhan University,Wuhan 430072,China;
Self-Activating Safety Mechanisms For Li-Ion Batteries, Xin-Ping Ai, Yu-Liang Cao, Han-Xi Yang
Journal of Electrochemistry
The safety concerns of LIBs are considered to be a main obstacle to their high rate or large capacity applications in electric vehicles.This paper describes briefly our research works on the development of self-activating safety mechanisms for LIBs,including redox shuttle,potential-sensitive separator,temperature-sensitive electrode,and fire-retardent electrolyte.The problems and future in this research area are also discussed.
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 electrochemical measurement,the …
Preparation And Electrochemical Behavior Of Li_4ti_5o_(12) 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 Li_4ti_5o_(12) 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 potential anode material for commerical battery applications.
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.
Electrochemical Corrosion Behavior Of Tio_2/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 Tio_2/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 surface barrier.
Fabrication And Characterization Of The Ni-Scsz Composite Anodes With A Lscm-Ceo_2 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-Ceo_2 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 little carbon was detected on the anode,suggesting that …
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.
Performance Of Sulfur-Super Conductive Carbon Black Composite In Electrolyte Mixed With Room Temperature Ionic Liquid,
2010
Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China;
Performance Of Sulfur-Super Conductive Carbon Black Composite In Electrolyte Mixed With Room Temperature Ionic Liquid, Bo Zhang, Si-Ting Chen, Xue-Ping Gao
Journal of Electrochemistry
The sulfur-super conductive carbon black composite was prepared as cathode material of lithium/sulfur battery.The composite was characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),and electrochemical impedance spectroscopy(EIS).The sulfur composite shows a high discharge capacity and a good cycle performance in electrolyte mixed with 50% of room temperature ionic liquid.In particular,the discharge capacity of the composite was stabilized at 483.6 mAh/g after 50 cycles.
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.
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 cycles.The Mg0.18Co0.12MnO2.19·0.45 H2O with doping Co 10% displayed …
Phase Transition Enthalpy Measurements Of Organic And Organometallic Compounds. Sublimation, Vaporization And Fusion Enthalpies From 1880 To 2010,
2010
University of North Texas
Phase Transition Enthalpy Measurements Of Organic And Organometallic Compounds. Sublimation, Vaporization And Fusion Enthalpies From 1880 To 2010, William Acree, James Chickos
Chemistry & Biochemistry Faculty Works
No abstract provided.
Phase Transition Enthalpy Measurements Of Organic And Organometallic Compounds. Sublimation, Vaporization And Fusion Enthalpies From 1880 To 2010,
2010
University of North Texas
Phase Transition Enthalpy Measurements Of Organic And Organometallic Compounds. Sublimation, Vaporization And Fusion Enthalpies From 1880 To 2010, William E. Acree, James S. Chickos
James Chickos
No abstract provided.
Photodissociation Dynamics In Titan's Atmosphere,
2010
Wayne State University
Photodissociation Dynamics In Titan's Atmosphere, Welvidanalage Ruchira Silva
Wayne State University Dissertations
Photodissociation dynamics of molecules relevant to understanding Titan's atmosphere (diacetylene, cyanoacetylene and heptane isomers) are carried out under collisionless condition using the DC slice imaging technique. In diacetylene photodissociation, two-photon processes dominate at 243 nm and 212 nm whereas at 121.6 nm, a one-photon dissociation process dominates. Direct measurement of the lifetime of metastable triplet diacetylene confirms sub-microsecond lifetimes. Photodissociation of cyanoacetylene at 193.3 nm proceeds on the S1 potential energy surface with an exit barrier. In heptane photodissociation, the dissociation occurs on the ground state or low-lying triplet states with nonradiative electronic relaxation. Time-of-flight mass spectroscopy studies in this …
