Porous LiMn0.7Fe0.3PO4-C prepared by a thermal decomposition method as high performance cathode materials for Li-ion batteries

被引：18

作者：

Liu, Tao ^{[1
]}

Xu, Jingjing ^{[1
]}

Wu, Binbin ^{[1
,2
]}

Xia, Qingbo ^{[1
,2
]}

Wu, Xiaodong ^{[1
]}

机构：

[1] Chinese Acad Sci, Suzhou Inst Nano Technol & Nano Bion, Suzhou 215123, Peoples R China

[2] Univ Sci & Technol China, Nano Sci & Technol Inst, Suzhou 215123, Peoples R China

来源：

RSC ADVANCES | 2013年 / 3卷 / 32期

基金：

中国博士后科学基金;

关键词：

RECHARGEABLE LITHIUM BATTERIES; HIGH-VOLUMETRIC-CAPACITY; LIMNPO4; LIFEPO4;

D O I：

10.1039/c3ra41672k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Micrometer LiMn0.7Fe0.3PO4-C particles consisting of nanopores are prepared using MnPO4 center dot H2O as the precursor. The nanopores were formed by the thermal decomposition of the precursor. Fe doping and carbon coating were realized in one step during the heat treatment. Polyethylene glycol (PEG) was used as the carbon source and milled with the other precursor to form the carbon coating throughout the whole micrometer particle sample. Due to the short ion transportation distance of the active materials caused by the nanopores, the composite displays high discharge capacity, and good rate capability and cycle stability. With only 4% carbon, the capacity of LiMn0.7Fe0.3PO4-C reaches 132 mA h g(-1) under the galvanostatic charge-discharge mode, and 140 mA h g(-1) under the constant current-constant voltage (CC-CV) charge mode.

引用

页码：13337 / 13341

页数：5