Nitrogen-doped carbon decorated LiFePO4 composite synthesized via a microwave heating route using polydopamine as carbon-nitrogen precursor

被引：41

作者：

Han, Bing ^{[1
,2
]}

Meng, Xudong ^{[1
,2
]}

Ma, Lin ^{[1
,2
]}

Nan, Jingyu ^{[1
,2
]}

机构：

[1] Hebei North Univ, Coll Sci, Zhang Jiakou 075000, Hebei Province, Peoples R China

[2] Hebei North Univ, Inst New Energy Sci & Technol, Zhang Jiakou 075000, Hebei Province, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Lithium-ion batteries; Cathode material; LiFePO4; Carbon coating; Nitrogen-doping; POSITIVE-ELECTRODE MATERIALS; LI-ION BATTERIES; CATHODE MATERIAL; ELECTROCHEMICAL PERFORMANCE; LITHIUM BATTERIES; PHOSPHATE CATHODE; CYCLE LIFE; GRAPHENE;

D O I：

10.1016/j.ceramint.2015.11.011

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nitrogen-doped carbon decorated LiFePO4 composite have been synthesized by using polydopamine as carbon nitrogen precursor and investigated as a promising cathode for lithium-ion batteries. XRD patterns indicate that the nitrogen-doped carbon decorated LiFePO4 has an olivine structure. TEM result shows that a uniform thin nitrogen-doped carbon layer with a thickness of about 3 nm is successfully coated on the surface of LiFePO4 particles. Compared with the pristine LiFePO4 sample, the nitrogen-doped carbon decorated LiFePO4 composite has a high discharge capacity, good rate capability and stable cycling performance. The excellent electrochemical performance should be attributed to the enhanced electronic conductivity and increased Li+ ion diffusion of the electrode by the coating with nitrogen-doped carbon. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2789 / 2797

页数：9

共 45 条

[1] Lithium extraction/insertion in LiFePO4:: an X-ray diffraction and Mossbauer spectroscopy study [J].