Effect of K-doping on the Electrochemical Performance of Ca3Co409 Anode for Li-ion Batteries

材料科学技术（英）, 2010, 26(7): 669-672.

^1, , ^2, , ^3, , ^4, , ^5,

1.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

2.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

3.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

4.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

5.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Effect of K-doping on the Electrochemical Performance of Ca3Co409 Anode for Li-ion Batteries

Jina Cao ^1, , Hongquan Liu ^2, , Jian Xie ^3, , Gaoshao Cao ^4, , Xinbing Zhao ^5,

1.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

2.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

3.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

4.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

5.Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Keywords： Lithium-ion battery

Ca3Co4O9(CCO) and Ca2.95Ko.05C0409 (CKCO) powders have been prepared by the polyacrylamide gel method. CKCO shows increased capacity and better cycling stability compared with CCO. After cycled for impedance spectroscopy (EIS) tests shows the CKCO sample has a lower initial charge transfer resistance (Rct) and undergoes smaller Rct change during cycling than the CCO sample, indicating improved electrochemica lperformance by K-doping.

参考文献

[1]	L. B. Chen;N. Lu;C. M. Xu;H. C. Yu;T. H. Wang .Electrochemical performance of polycrystalline CuO nanowires as anode material for Li ion batteries[J].Electrochimica Acta,2009(17):4198-4201.

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Effect of K-doping on the Electrochemical Performance of Ca3Co409 Anode for Li-ion Batteries

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