Improved electrochemical properties of (1 − x)LiFePO4·xLi3V2(PO4)3/C composites prepared by a novel sol–gel method

2015 ◽  
Vol 39 (11) ◽  
pp. 8971-8977 ◽  
Author(s):  
Yuanchang Si ◽  
Zhi Su ◽  
Yingbo Wang ◽  
Ting Ma ◽  
Juan Ding
Keyword(s):  
Electrochemical Properties ◽  
Discharge Capacity ◽  
Sol Gel ◽  
Initial Discharge Capacity ◽  
Gel Method ◽  
Sol Gel Method ◽  
Initial Discharge

0.8LiFePO4·0.2Li3V2(PO4)3/C composites were synthesized by a new sol–gel method, which delivered an initial discharge capacity of 158.7 mA h g−1 at 0.1C.

Structure and Electrochemical Properties of Li1-XNi0.5Mn0.5O2 Thin Film Using Different Raw Material by Sol-Gel Method

2010 ◽  
Vol 44-47 ◽  
pp. 2259-2263
Author(s):  
Hai Xia Liang ◽  
Run Xia Jiang ◽  
Liang Xiao ◽  
Han Xing Liu
Keyword(s):  
Thin Films ◽  
Electrochemical Properties ◽  
Discharge Capacity ◽  
Sol Gel ◽  
Great Influence ◽  
Raw Material ◽  
X Ray Diffraction ◽  
Crystal Water ◽  
Gel Method ◽  
Sol Gel Method

Lithium-deficient thin films Li1-xNi0.5Mn0.5O2 were synthesized by sol-gel method using metal lithium, manganese and nickel acetate salts and acetylacetonate salts as started materials, respectively. The microstructures and electrochemical performance of Li1-xNi0.5Mn0.5O2 thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and galvanostatic charge–discharge measurements. Lithium-deficient was due to the formation of spinel LiNi0.5Mn1.5O4 impurities. The lithium-deficient was more seriously for SB film due to contain crystal water in the acetate salts. The raw material had great influence on the morphology of the films. The SA film had better electrochemical properties than that of SB film. The first discharge capacity was about 51 μAh/cm2-μm. After 40 cycles, 76% of its discharge capacity can be retained. The metal acetylacetonate salts without crystal water are more suitable for the preparation of LiNi0.5Mn0.5O2 film by sol-gel method.

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.

scholarly journals Synthesis and Electrochemical Properties of C/LiMnPO4 Cathode Materials by Complex Polymerized Method

2011 ◽  
Vol 485 ◽  
pp. 115-118
Author(s):  
Atsushi Fujita ◽  
Fuminari Isobe ◽  
Takayuki Kodera ◽  
Takashi Ogihara
Keyword(s):  
Thermogravimetric Analysis ◽  
Electrochemical Properties ◽  
Carbon Content ◽  
Discharge Capacity ◽  
Cathode Materials ◽  
Type Structure ◽  
Initial Discharge Capacity ◽  
Initial Discharge ◽  
Differential Thermogravimetric Analysis

C/LiMnPO4 materials were synthesized by the complex polymerized method. An orthorhombic olivine type structure was obtained by calcination at temperatures over 973 K under an argon/hydrogen (5%) atmosphere. Differential thermogravimetric analysis showed that the carbon content of C/LiMnPO4 was about 65 wt%. The initial discharge capacity of C/LiMnPO4 calcined at 973 K was 135 mAh/g at 0.1 C and 60 mAh/g at 1 C.

Enhancement of electrochemical properties of niobium-doped LiFePO4 /C synthesized by sol-gel method

2018 ◽  
Vol 65 (8) ◽  
pp. 977-981 ◽  
Author(s):  
Ao Jiang ◽  
Xinlu Wang ◽  
Musen Gao ◽  
Jinxian Wang ◽  
Guixia Liu ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Niobium Doped

LiV3O8 NANOMATERIAL AS ANODE WITH GOOD CYCLING PERFORMANCE FOR AQUEOUS RECHARGEABLE LITHIUM BATTERIES

2011 ◽  
Vol 04 (04) ◽  
pp. 315-318 ◽  
Author(s):  
L. L. LIU ◽  
W. TANG ◽  
S. TIAN ◽  
Y. SHI ◽  
Y. P. WU ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Anode Material ◽  
Lithium Batteries ◽  
Aqueous Electrolyte ◽  
Sol Gel ◽  
Cycling Performance ◽  
Cyclic Voltammograms ◽  
Rechargeable Lithium Batteries ◽  
Gel Method ◽  
Sol Gel Method

LiV3O8 nanorod material was prepared by a simple sol–gel method. The electrochemical properties of the as-prepared LiV3O8 in 0.5 M Li2SO4 aqueous electrolyte were studied through cyclic voltammograms (CV) and discharge–charge measurements. Experiments show that this nanorod material can deliver the capacities of 72, 62 and 53 mAh/g at 20, 50, 100 mA/g, respectively. After 50 cycles, it can maintain 64, 47 and 40 mAh/g, corresponding to 88%, 76% and 77% of the initial capacities, which suggest that this nanorode material presents good cycling performance as anode material for aqueous rechargeable lithium batteries.

Synthesis, structural, magnetic and electrochemical properties of LiNi1/3Mn1/3Co1/3O2 prepared by a sol–gel method using table sugar as chelating agent

2013 ◽  
Vol 113 ◽  
pp. 313-321 ◽  
Author(s):  
Nilüfer Kızıltaş-Yavuz ◽  
Markus Herklotz ◽  
Ahmed M. Hashem ◽  
Hanaa M. Abuzeid ◽  
Björn Schwarz ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Sol Gel ◽  
Chelating Agent ◽  
Gel Method ◽  
Sol Gel Method
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