文献类型：期刊文献

英文题名：Fe3O4-Embedded and N-Doped Hierarchically Porous Carbon Nanospheres as High-Performance Lithium Ion Battery Anodes

作者：Mao, Jiayi[1];Niu, Dechao[1];Zheng, Nan[1];Jiang, Guangyu[1];Zhao, Wenru[1];Shi, Jianlin[1,2];Li, Yongsheng[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Lab Low Dimens Mat Chem,Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

年份：2019

卷号：7

期号：3

起止页码：3424

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20190406426027);WOS:【SCI-EXPANDED(收录号:WOS:000458086100063)】；

基金：This work was financially supported by the National Natural Science Foundation of China for Innovative Research Groups (no. 51621002); NSFC (grant nos. 51572083, 51572084, and 51672083); Program of Shanghai Academic/Technology Research Leader (18XD1401400); Basic Research Program of Shanghai (17JC1404702); the Shanghai Rising-Star Program (16QA1401300); the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the 111 project (B14018); and The Fundamental Research Funds for Central Universities (222201718002).

语种：英文

外文关键词：Fe3O4; Hierarchically porous; N-Doping; Soft-template; Lithium-ion battery

摘要：Recently, Fe3O4-based materials have been widely studied as anodes in lithium-ion batteries (LIBs) because of the large theoretical capacity (924 mAh g(-1)) and environmental benignity. Unfortunately, these materials suffer from the low practical capacity and poor cycling stability. Herein, we developed a simple "soft-templating" approach to fabricate multiple Fe3O4 nanoparticles-embedded and N-doped hierarchically porous carbon nanospheres (Fe3O4@N-HPCNs) as anodes for LIBs by utilizing the self-assembly among polystyrene-b-poly(acrylic acid), cetyltrimethylammonium bromide, and hydrophobic Fe3O4 nanoparticles in oil/water system. The resultant Fe3O4@N-HPCNs present a well-defined spherical morphology, high specific surface area, and unique dual-mesoporous core structures with multiple Fe3O4 nanoparticles in the large-mesopore channels. More importantly, the Fe3O4@N-HPCNs anode exhibits high reversible specific capacities of 1240 mAh g(-1) (after 100 cycles at 0.1 A g(-1)) and 581 mAh g(-1) (after 400 cycles at 1 A g(-1)). Even at 10 A g(-1), a specific capacity of ca. 290 mAh g(-1) is still retained, indicating its excellent rate capability. Therefore, such a "soft-templating" approach is expected to provide us a new pathway to design and prepare other nanoparticles@porous carbon anodes for LIBs.