文献类型：期刊文献

英文题名：Si nanoparticles adhering to a nitrogen-rich porous carbon framework and its application as a lithium-ion battery anode material

作者：Shi, Lu[1,2,3];Wang, Weikun[3];Wang, Anbang[3];Yuan, Keguo[3];Jin, Zhaoqing[3];Yang, Yusheng[3]

第一作者：Shi, Lu;史璐

通讯作者：Shi, L[1]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China;[2]Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China;[3]Res Inst Chem Def, Mil Power Sources Res & Dev Ctr, Beijing 100191, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2015

卷号：3

期号：35

起止页码：18190-18197

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20153501215334);Scopus(收录号：2-s2.0-84940037461);WOS:【SCI-EXPANDED(收录号:WOS:000360117600035)】；

基金：This work was financially supported by the fund from National High Technology Research and Development Program 863 (no. 2011AA11A256, no. 2012AA052202).

语种：英文

外文关键词：Anodes - Calcite - Calcium carbonate - Carbon - Cathodes - Nanoparticles - Nitrogen - Porous materials - Silicon

摘要：In this work, a novel Si/nitrogen-rich porous C composite was prepared by the simple co-assembly of gelatin, nano-CaCO3 particles and Si nanoparticles, followed by a pyrolysis process and a subsequent acid washing treatment to remove the template. The Si nanoparticles adhered to the nitrogen-rich porous carbon framework, which possesses good conductivity and adequate free space to accommodate the volume change of Si nanoparticles during cycling. In contrast with the bare Si nanoparticles and the conventional Si/C composite, the electrochemical performance of the as-prepared Si/nitrogen-rich porous C composite has been improved significantly. It delivers a reversible capacity of 1103 mA h g(-1) after 100 cycles at a current density of 100 mA g(-1) and 766 mA h g(-1) at 2 A g(-1), much higher than those of commercial graphite anodes. In addition, the synthesis method can be easily scaled up and widely applied to other high-capacity anode and cathode material systems that undergo large volume expansion.