Electrochemical Properties of Nanostructured Amorphous, Sol-gel-Synthesized TiO[sub 2]/Acetylene Black Composite Electrodes

2004 ◽  
Vol 151 (4) ◽  
pp. A527 ◽  
Author(s):  
Hiroyasu Furukawa ◽  
Mitsuhiro Hibino ◽  
Itaru Honma
Keyword(s):  
Electrochemical Properties ◽  
Sol Gel ◽  
Acetylene Black ◽  
Composite Electrodes

Effect of Fe2O3 and Binder on the Electrochemical Properties of Fe2O3/AB (Acetylene Black) Composite Electrodes

2017 ◽  
Vol 46 (6) ◽  
pp. 3458-3462 ◽  
Author(s):  
Trinh Tuan Anh ◽  
Vu Manh Thuan ◽  
Doan Ha Thang ◽  
Bui Thi Hang
Keyword(s):  
Electrochemical Properties ◽  
Acetylene Black ◽  
Composite Electrodes

Sol–gel-derived graphite organosilicate composite electrodes bulk-modified with Keggin-type α-germanomolybdic acid

2001 ◽  
Vol 11 (2) ◽  
pp. 549-553 ◽  
Author(s):  
Peng Wang ◽  
Yi Yuan ◽  
Zhengbo Han ◽  
Guoyi Zhu
Keyword(s):  
Sol Gel ◽  
Composite Electrodes ◽  
Keggin Type

Preparation and Electrochemical Properties of LaMnO3 Powder as a Supercapacitor Electrode Material

2017 ◽  
Vol 727 ◽  
pp. 698-704 ◽  
Author(s):  
Xian Wei Wang ◽  
Xiao Er Wang ◽  
Hui Chao Zhang ◽  
Qian Qian Zhu ◽  
Dong Li Zheng ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Properties ◽  
Electrode Material ◽  
Raw Materials ◽  
Sol Gel ◽  
Galvanostatic Charge ◽  
Supercapacitor Electrode ◽  
Lanthanum Manganate ◽  
Pure Phase ◽  
Charge Discharge

The structural and electrochemical properties of lanthanum manganate (LaMnO3) powder prepared by the sol-gel method are researched in this article. The powder calcined at 600 °C showed amorphous, and the powder calcined at 700-800 °C showed the pure phase of the LaMnO3. The grains with the size of about 80-120 nm were agglomerating together. Cyclic voltammetry and galvanostatic charge-discharge were used to characterize the electrochemical properties in alkaline environment. The electrochemical properties calcined at 700 °C showed a specific capacitance of 73 F/g at the current density of 0.5 A/g. The raw materials for preparing the LaMnO3 powder are cheap, and the operation method is simple.

Nanocomposites LiMnxFe1-xPO4/C synthesized via freeze drying assisted sol-gel routine and their magnetic and electrochemical properties

2019 ◽  
Vol 779 ◽  
pp. 339-346 ◽  
Author(s):  
Liying Liu ◽  
Zujie Cao ◽  
Yanyan Cui ◽  
Xi Ke ◽  
Guoxun Zeng ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Freeze Drying ◽  
Sol Gel

scholarly journals Improving Electrochemical Activity in a Semi-V-I Redox Flow Battery by Using a C–TiO2–Pd Composite Electrode

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Tsung-Sheng Chen ◽  
Shu-Ling Huang ◽  
Mei-Ling Chen ◽  
Tz-Jiun Tsai ◽  
Yung-Sheng Lin
Keyword(s):  
Energy Storage ◽  
Sol Gel ◽  
Vanadium Redox Flow Battery ◽  
Operating Voltage ◽  
Composite Electrodes ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Structural Morphology ◽  
X Ray ◽  
Combination Methods

This study developed composite electrodes used in a semi-vanadium/iodine redox flow battery (semi-V-I RFB) system and designed semi-V-I RFB stacks to provide performance comparable to that of an all-vanadium redox flow battery (all-VRFB) system. These electrodes were modified using the electroless plating method and sol-gel process. The basic characteristics of the composited electrodes, such as the surface structural morphology, metal crystal phases, and electrochemical properties, were verified through cyclic voltammetry, field emission-scanning electron microscopy, energy-dispersive X-ray spectrometry, and X-ray diffraction. The results show that the sintering C–TiO2–Pd electrode improved the electrocatalytic activity of the semi-V-I RFB system, thereby effectively increasing the energy storage ability of the system. The C–TiO2–Pd electrode was used as a negative electrode in a single semi-V-I RFB and exhibited excellent cyclic performance in a charge-discharge test of 50 cycles. The average values for coulomb efficiency, voltage efficiency, and energy efficiency were approximately 96.56%, 84.12%, and 81.23%, respectively. Moreover, the semi-V-I RFB stacks were designed using series or parallel combination methods that can effectively provide the desired operating voltage and linearly increase the power capacity. The amount of vanadium salt required to fabricate the semi-V-I RFB system can be reduced by combining large stack modules of the system. Therefore, this system not only reduced costs but also exhibited potential for applications in energy storage systems.

Effect of Synthesis Conditions on the Structure and Electrochemical Properties of LiNi1/2Mn1/2O2 by Sol Gel Method

2011 ◽  
Vol 399-401 ◽  
pp. 1447-1450
Author(s):  
Zhi Yong Yu ◽  
Han Xing Liu
Keyword(s):  
Electrochemical Properties ◽  
Sol Gel ◽  
Electrochemical Analysis ◽  
X Ray Diffraction ◽  
Capacity Fading ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Synthesis Conditions ◽  
A Current

The layered LiNi1/2Mn1/2O2 cathode materials were synthesized by a sol gel method. The effects of calcination temperature and time on the structural and electrochemical properties of the LiNi1/2Mn1/2O2 were investigated. The prepared samples were characterized by X-ray diffraction (XRD) and electrochemical analysis. The results revealed that the layered LiNi1/2Mn1/2O2 material could be optimal synthesized at temperature of 900°C for 10h. The sample prepared under the above conditions has the highest initial discharge capacity of 151 mAh/g and showed no dramatic capacity fading during 20 cycles between 2.5-4.5V at a current rate of 20mA/g.

Processing and Performance of V205 Xerogel, Aerogel, and Aerogellike Materials as Lithium Intercalation Hosts

1998 ◽  
Vol 548 ◽  
Author(s):  
Leland H. Manhart ◽  
Jun John Xu ◽  
Fabrice Coustier ◽  
Stefano Passerini ◽  
Boone B. Owens ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Methyl Formate ◽  
Sol Gel ◽  
Specific Capacity ◽  
Lithium Intercalation ◽  
Composite Electrodes ◽  
Rechargeable Lithium Batteries ◽  
Exchange Processes ◽  
And Performance ◽  
Sol Gel Synthesis

ABSTRACTVarious forms of vanadium pentoxide, including xerogel, aerogel, and aerogel-like forms, were prepared by sol-gel synthesis and processed by novel procedures following synthesis. It was demonstrated that the intrinsic thermodynamics of lithium intercalation of the ARG and ARG-like materials prepared by solvent exchange processes involving methyl formate (MF/ARG and MF/ARG-xslike) are identical, while they are drastically different from those of the parent XRG, which gives rise to significantly increased specific energies for the MF/ARG or MF/ARG-like as lithium intercalation hosts. All three forms are capable of reversibly intercalating up to four moles of Li+ ions per mole of V205 electrochemically and can be cathode candidates for rechargeable lithium batteries. Various processing methods for fabricating composite electrodes with the XRG led to specific capacity in the range of 300 to 350 mAh/g at C4Li/ 20 rate, and good cyclability.

Optical and electrochemical properties of sol-gel-deposited tantalum pentoxide thin films

2000 ◽  
Author(s):  
Qinyuan Zhang ◽  
Jun Shen ◽  
Guangming Wu ◽  
Bin Zhou ◽  
Junxia Lu ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrochemical Properties ◽  
Sol Gel ◽  
Tantalum Pentoxide
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