Phosphorus-doped porous carbon derived from rice husk as anode for lithium ion batteries

被引：50

作者：

Wang, Jiaqing ^{[1
]}

Yang, Zhenzhong ^{[2
]}

Pan, Fusen ^{[1
]}

Zhong, Xiongwu ^{[1
]}

Liu, Xiaowu ^{[1
]}

Gu, Lin ^{[2
]}

Yu, Yan ^{[1
]}

机构：

[1] Chinese Acad Sci, Univ Sci & Technol China, Dept Mat Sci & Engn, Key Lab Mat Energy Convers, Hefei 230026, Anhui, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 68期

基金：

中国国家自然科学基金;

关键词：

STORAGE; REDUCTION;

D O I：

10.1039/c5ra08148c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We developed a simple and scalable chemical method to obtain phosphorus-doped porous carbon (P-PCRH) by optimized acid treatment and thermal annealing of rice husk with triphenylphosphine (TPP). After doping with phosphorus (doping level of similar to 4.14 at% P), the P-PC-RH electrode increases by almost half the reversible capacity (757 mA h g(-1) after 100 cycles at 100 mA g(-1)) of porous carbon without phosphorus doping (PC-RH-x, x = 2, 4, 6). When cycled at a high current of 2000 mA g(-1), it still delivers a reversible specific capacity of 382 mA h g(-1). The improved electrochemical performance of P-PC-RH is attributed to the synergetic effect of the 3D interconnected porous structure and phosphorus doping, which can maintain perfect electrical conductivity throughout the electrode and enhance electrochemical activities for lithium storage.

引用

页码：55136 / 55142

页数：7

共 42 条

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