Effects of nano-carbon webs on the electrochemical properties in LiFePO4/C composite

被引：74

作者：

Chung, HT

Jang, SK

Ryu, HW

Shim, KB

机构：

[1] Dongshin Univ, Dept Ceram Engn, Naju, Chonnam, South Korea

[2] Korean Agcy Technol & Stand, Opt & Elect MatDiv, Minist Commerce Ind & Energy, Gwacheon, Gyonggi, South Korea

[3] Hanyang Univ, Ceram Proc Res Ctr, Dept Ceram Engn, Seoul 133791, South Korea

来源：

SOLID STATE COMMUNICATIONS | 2004年 / 131卷 / 08期

关键词：

lithium secondary battery; cathodes; LiFePO4; composite; nano-carbon webs;

D O I：

10.1016/j.ssc.2004.03.010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

LiFePO4/C composite is one of ways to surmount the lower electrical conductivity of LiFePO4. In this paper, we suggest a new type of LiFePO4/C composite in which amorphous nano-carbon webs are wrapping and connecting LiFePO4 particles. This type of composite was obtained by adapting a new liquid-based powder preparation method, that is, all raw materials (LiFePO4 and carbon precursor materials) were dissolved in liquid and solidified. This composite was very effective in enhancing the electrochemical properties such as capacity and rate capability. Even as high as at 400 m Ag-1 current density, a capacity of about 105 m Ahg(-1) was obtained at 25 degreesC. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：549 / 554

页数：6

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