Effect of ion doping on the electrochemical performances of LiFePO4–Li3V2(PO4)3 composite cathode materials

RSC Advances ◽  
2014 ◽  
Vol 4 (30) ◽  
pp. 15332-15339 ◽  
Author(s):  
Chao Jin ◽  
Xudong Zhang ◽  
Wen He ◽  
Yan Wang ◽  
Haiming Li ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Composite Cathode ◽  
Electrochemical Performances ◽  
Ion Doping

This review highlights the effect of ion doping on the electrochemical performances of LiFePO4–Li3V2(PO4)3 composite cathode materials.

Synthesis of LiFePO4/C Composite Cathode Materials by Solid State Method Using Mixed Iron Sources

2013 ◽  
Vol 734-737 ◽  
pp. 2541-2544
Author(s):  
Wei Wang ◽  
Zheng Zhang ◽  
Dao Wushuang Shi ◽  
Xing Quan Liu
Keyword(s):  
Solid State ◽  
Electrochemical Performance ◽  
Cathode Materials ◽  
Lithium Ion ◽  
Composite Cathode ◽  
Molar Ratio ◽  
Electrochemical Performances ◽  
Solid State Method ◽  
State Reduction ◽  
Solid State Reduction

The olivine LiFePO4/C composite cathode materials for lithium-ion batteries were synthesized by solid state reduction method using mixed iron sources. The effects of different temperatures on the electrochemical performance of as-synthesized cathode materials were investigated and analyzed. The crystal structures and the electrochemical performances were characterized by SEM, galvanostatical charge-discharge testing and AC-impedance, respectively. The results demonstrated that the LiFePO4/C composite cathode material synthesized at 710°C and with 1/2(FeC2O4·2H2O/Fe2O3) molar ratio of mixed iron sources has the better electrochemical performance, it has a discharge capacity of 126.1mAh/g at 0.2C and the capacity is kept at 113.8mAh/g after 20 cycles.

ChemInform Abstract: Effect of Ion Doping on the Electrochemical Performances of LiFePO4-Li3V2(PO4)3Composite Cathode Materials

ChemInform ◽  
2014 ◽  
Vol 45 (35) ◽  
pp. no-no
Author(s):  
Chao Jin ◽  
Xudong Zhang ◽  
Wen He ◽  
Yan Wang ◽  
Haiming Li ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Electrochemical Performances ◽  
Ion Doping

scholarly journals Preparation and Characterisation of LiFePO4/CNT Material for Li-Ion Batteries

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Rushanah Mohamed ◽  
Shan Ji ◽  
Vladimir Linkov
Keyword(s):  
Carbon Nanotubes ◽  
Discharge Capacity ◽  
Cathode Materials ◽  
High Efficiency ◽  
Discharge Rate ◽  
Composite Cathode ◽  
Electrochemical Performances ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Cycle Efficiency

Li-ion battery cathode materials were synthesised via a mechanical activation and thermal treatment process and systematically studied. LiFePO4/CNT composite cathode materials were successfully prepared from LiFePO4material. The synthesis technique involved growth of carbon nanotubes onto the LiFePO4using a novel spray pyrolysis-modified CVD technique. The technique yielded LiFePO4/CNT composite cathode material displaying good electrochemical activity. The composite cathode exhibited excellent electrochemical performances with 163 mAh/g discharge capacity with 94% cycle efficiency at a 0.1 C discharge rate in the first cycle, with a capacity fade of approximately 10% after 30 cycles. The results indicate that carbon nanotube addition can enable LiFePO4to display a higher discharge capacity at a fast rate with high efficiency. The research is of potential interest for the application of carbon nanotubes as a new conducting additive in cathode preparation and for the development of high-power Li-ion batteries for hybrid electric vehicles.

Structural enhancement of Na3V2(PO4)3/C composite cathode materials by pillar ion doping for high power and long cycle life sodium-ion batteries

2014 ◽  
Vol 2 (46) ◽  
pp. 19623-19632 ◽  
Author(s):  
Sung-Jin Lim ◽  
Dong-Wook Han ◽  
Do-Hwan Nam ◽  
Kyung-Sik Hong ◽  
Ji-Yong Eom ◽  
...  
Keyword(s):  
High Power ◽  
Cathode Materials ◽  
Composite Cathode ◽  
Cycle Life ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Ion Doping

ELECTROCHEMICAL PERFORMANCES OF COMPOSITE CATHODE MATERIALS Li1.2Ni0.17Co0.10Mn0.53O2 and Li1.2Ni0.2Mn0.6O2

2016 ◽  
Vol 212 ◽  
pp. 810-821 ◽  
Author(s):  
Е.V. Lanina ◽  
V.D. Zhuravlev ◽  
L.V. Еrmakova ◽  
А.N. Petrov ◽  
А.V. Pachuev ◽  
...  
Keyword(s):  
Cathode Materials ◽  
Composite Cathode ◽  
Electrochemical Performances

Effects of Ta Ion Doping on Structure and Electrochemical Performances of Li3V2(PO4)3/C Cathode Materials

2012 ◽  
Vol 519 ◽  
pp. 137-141 ◽  
Author(s):  
Lei Zhang ◽  
Tao Yang ◽  
Qian Yang ◽  
Zhao Hui Huang ◽  
Ming Hao Fang ◽  
...  
Keyword(s):  
Particle Size ◽  
Cathode Materials ◽  
Discharge Rate ◽  
Sol Gel ◽  
Electronic Conductivity ◽  
Physical Structure ◽  
Undoped Sample ◽  
Electrochemical Performances ◽  
Ion Doping ◽  
Method Effects

Ta-doped Li3V2(PO4)3 cathode material coated by carbon was synthesized via a sol-gel method. Effects of Ta5+ doping on the physical structure and electrochemical performances of the Li3V2(PO4)3/C cathode materials were investigated. Compared with the undoped sample, the Ta-doped samples had no excess peaks but the larger particle size and the narrower distribution of the particle size, indicating that Ta5+ entered into the structure of (Li1-5xTax)3V2(PO4)3/C rather than forming any impurities. When x was up to 0.01, the best electrochemical properties of the Ta-doped cathode materials had been displayed at the charge and discharge rate of 0.1C with the voltage of 3.0～4.8V. The analysis of cyclic voltammetry revealed that the polarization of the Li3V2(PO4)3/C cathode materials could be effectively decreased by Ta5+ doping(x=0.01), mainly resulting from the better electronic conductivity.

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