文献类型：期刊文献

英文题名：Confined Synthesis of FeS2 Nanoparticles Encapsulated in Carbon Nanotube Hybrids for Ultrastable Lithium-Ion Batteries

作者：Xu, Lei[1];Hu, Yanjie[1];Zhang, Haoxuan[1];Jiang, Hao[1];Li, Chunzhong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2016

卷号：4

期号：8

起止页码：4251

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20163202678663);WOS:【SCI-EXPANDED(收录号:WOS:000380869800021)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21522602, 91534202), the Shanghai Rising-Star Program (15QA1401200), the International Science and Technology Cooperation Program of China (2015DFA51220), Program for New Century Excellent Talents in University (NCET-13-0796), the 111 Project (B14018), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：FeS2; Confined synthesis; Encapsulated structure; Lithium-ion batteries

摘要：To address the large volume change and polysulfide dissolution of FeS2-based materials for lithium-ion batteries (LIBs), we demonstrate the synthesis of FeS2 nanoparticles encapsulated in carbon nanotubes (CNTs) by a confined reaction. There is sufficient void space between adjacent FeS2 nanoparticles for guaranteeing the highly structural integrity. The resultant FeS2/CNT hybrids, when served as anode materials for LIBs, predictably exhibit a very stable capacity retention of 800 mAh g(-1) over 200 cycles at 200 mA g(-1). Even at 2000 mA g(-1), they still deliver high-rate and long-life performance with a high specific capacity of 525 mAh g(-1) after 1000 cycles. Such a kind of encapsulated structure is helpful for enhancing rate capability and cycling stability in LIBs applications. Importantly, the present confined reaction strategy can be extensively applied to synthesize other analogous hybrids for energy storage and conversion.