锂二次电池新型正极材料FeF3(H2O)0.33的制备及电化学性能研究

功能材料, 2008, 39(11): 1824-1827.

锂二次电池新型正极材料FeF3(H2O)0.33的制备及电化学性能研究

伍文 ^1, , 王先友 ^2, , 王欣 ^3, , 王国宝 ^4, , 杨顺毅 ^5, , 魏建良 ^6, , 李娜 ^7,

1.湘潭大学,化学学院,湖南,湘潭,411105

2.湘潭大学,化学学院,湖南,湘潭,411105

3.湘潭大学,化学学院,湖南,湘潭,411105

4.湘潭大学,化学学院,湖南,湘潭,411105

5.湘潭大学,化学学院,湖南,湘潭,411105

6.湘潭大学,化学学院,湖南,湘潭,411105

7.湘潭大学,化学学院,湖南,湘潭,411105

基金项目: 国家自然科学基金(20673092)

关键词：锂二次电池 , 正极材料 , FeF3(H2O)0.33/C复合材料 , 电化学性能

Studies on preparation and electrochemical performances of FeF3(H2O)0.33 cathode material for the application of lithium rechargeable battery

用水热法制备FeF<3(H2O)4.5前驱体,在惰性气体保护下将前驱体制备成含微量水的FeF3(H2O)0.33,FeF3(H2O)0.33与乙炔黑球磨制备成锂二次电池新型纳米级的复合正极材料.通过傅里叶红外光谱(FT-IR)、X射线衍射(XRD)、扫描电镜(SEM)和电化学测试等研究了材料的结构和电化学性能.结果表明,所制备的FeF3是含微量水的FeF3(H2O)0.33,具有典型正交晶系结构,并且所制备的材料粒径均匀.FeF3(H6O)0.33/C复合材料在充放电倍率为0.1C和电压范围在2.0～4.5V内,具有较高的放电比容量和容量保持率.其首次放电比容量为190mAh/g,在循环30次后容量保持率为第2次的86%.

参考文献

[1]	Stanley W M .[J].Chemical Reviews,2004,104:4271-4301.
[2]	Tarascon J M;Armand M .[J].Nature,2001,414:359-367.
[3]	Ralph J. Brodd;Kathryn R. Bullock;Randolph A. Leising .Batteries, 1977 to 2002[J].Journal of the Electrochemical Society,2004(3):K1-K11.
[4]	Broussely M;Archdale G .[J].Journal of Power Sources,2004,136:386-394.
[5]	Murphy D W;Chriatian P A .[J].Science,1979,205:651-656.
[6]	Mizushima K;Jones P C;Wiseman P J et al.[J].Materials Research Bulletin,1980,15:783-789.
[7]	Thomas M G S R;David W Z F;Goodenough J B et al.[J].Materials Research Bulletin,1985,20:1137-1146.
[8]	Thackeray M M;David W Z F;Bruce D G et al.[J].Materials Research Bulletin,1983,18:461-472.
[9]	Armstrong A R;Bruee P G .[J].Nature,1996,381(06):499-500.
[10]	A. Yamada;S. C. Chung;K. Hinokuma .Optimized LiFePO{sub}4 for lithium battery cathodes[J].Journal of the Electrochemical Society,2001(3):A224-A229.
[11]	Yabuuchi N;Koyama Y;Nakayama N;Ohzuku T .Solid-state chemistry and electrochemistry of LiCo1/3Ni1/3Mn1/3O2 for advanced lithium-ion batteries[J].Journal of the Electrochemical Society,2005(7):A1434-A1440.
[12]	Arai H;Okada S;Sakurai Y et al.[J].Journal of Power Sources,1997,68:716-719.
[13]	Badway F;Pereira N;Cosandey F.2002 MRS Fall Meeting[M].USA:Boston,2002:207-218.
[14]	Amatucci G G;Badway F;DuPasquier A.[A].Virginia:Portsmouth,2003:6606-6614.
[15]	Badway F.;Cosandey F.;Pereira N.;Amatucci GG. .Carbon metal fluoride nanocomposites - High-capacity reversible metal fluoride conversion materials as rechargeable positive electrodes for Li batteries[J].Journal of the Electrochemical Society,2003(10):A1318-A1327.
[16]	F. Badway;N. Pereira;F. Cosandey .Carbon-Metal Fluoride Nanocomposites Structure and Electrochemistry of FeF_3: C[J].Journal of the Electrochemical Society,2003(9):A1209-A1218.
[17]	Amatucci G G .[P].US 20040062994,2004-04-05.
[18]	Amatucci G G .[P].US 20040121235,2004-06-04.
[19]	Li H;Richter G;Maier J .[J].Advanced Materials,2003,15:736-739.
[20]	Hong Li;Palani Balaya;Joachim Maier .Li-Storage via Heterogeneous Reaction in Selected Binary Metal Fluorides and Oxides[J].Journal of the Electrochemical Society,2004(11):A1878-A1885.
[21]	王先友;伍文;王欣 .[P].CN 200710192681.6,2007.
[22]	I. Plitz;E Badway;J. Al-Sharab .Structure and Electrochemistry of Carbon-Metal, Fluoride Nanocomposites Fabricated by Solid-State Redox Conversion[J].Journal of the Electrochemical Society,2005(2):A307-A315.

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