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Citation: WANG Hong, YANG Chi, GUO Chuntai, WANG Daxing, SUN Lian. The Electrochemical Performance of Surface Protected LiFeBO₃ Cathode Materials for Li-ion Batteries[J]. Chinese Journal of Applied Chemistry, ;2011, 28(7): 821-825. doi: 10.3724/SP.J.1095.2011.00522 shu

The Electrochemical Performance of Surface Protected LiFeBO₃ Cathode Materials for Li-ion Batteries

WANG Hong ^a,, ,
YANG Chi ^a ,
GUO Chuntai ^b ,
WANG Daxing ^c ,
SUN Lian ^c

1.
a School of Chemistry and Chemical Engineering, Mianyang Normal University, Mianyang 621000;
2.
b Jiewei Power Co.Lt, Tianjin;
3.
c Sichuan Jiuyuan Huantong Power Sources Co.Ltd., Mianyang

Corresponding author: WANG Hong,
Received Date: 6 September 2010
Available Online: 28 October 2010
Fund Project: 四川省教育厅资助项目(09ZC021) (09ZC021)绵阳市科技局资助项目(09Y002-3) (09Y002-3)

The LiFeBO₃ cathode materials for Li-ion batteries were prepared by means of solid reaction using lithium metaborate and ferrous oxalate as raw materials.The LiFeBO₃ cathode materials were further coated by ethylene propylene copolymer(EPM).The samples were characterized by X-ray diffraction,scanning electron microscopy,and titration analysis.Electrochemical tests of materials showed that LiFeBO₃ exhibited a higher discharge mass specific capacity.The electrochemical performance of the coated samples was demonstrated to be improved.Sample coated with 5% EPM had an initial capacity of 190 mA·h/g.It was found that only 4.2% capacity was lost after 50 charge/discharge cyclings at 0.5C.
- lithium ion batteries,
- cathode materials,
- lithium iron borate
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The Electrochemical Performance of Surface Protected LiFeBO₃ Cathode Materials for Li-ion Batteries