文献类型：期刊文献

英文题名：Facile Synthesis of Nitrogen-Doped Double-Shelled Hollow Mesoporous Carbon Nanospheres as High-Performance Anode Materials for Lithium Ion Batteries

作者：Xu, Chuanpeng[1];Niu, Dechao[1];Zheng, Nan[1];Yu, Haining[1];He, Jianping[1];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

年份：2018

卷号：6

期号：5

起止页码：5999

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20182005202977);WOS:【SCI-EXPANDED(收录号:WOS:000431927500038)】；

基金：This work was financially supported by the National Natural Science Foundation of China for Innovative Research Groups (Grant no. 51621002), the National Key Research and Development Program of China (Grant No. 2016YFA0203700), the Shanghai Rising-Star Program (16QA1401300), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, NSFC (Grant Nos. 51572083, 51572084, 51461165202, 51472085, 51672083), the Basic Research Program of Shanghai (17JC1404702), the Program of Shanghai Academic Research Leader (18XD1401400), 111 Project (B14018), and the Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Double-shelled structure; Hollow carbon nanospheres; Nitrogen-doping Porous carbon; Lithium ion batteries

摘要：In this work, a facile "soft-template" route to synthesize nitrogen-doped double-shelled hollow mesoporous carbon spheres (N-DHMCSs) has been developed by using anionic block copolymer polystyrene-b-poly(acrylic acid) (PS-b-PAA) micelles as soft template, tetraethyl orthosilicate (TEOS) as silica source, and dopamine (DA) as carbon and nitrogen sources, respectively. After carbonization of the PDA precursors and the removal of silica, the obtained N-DFIMCSs present high specific surface area (>600 m(2)/g), adjustable nitrogen doping content (4.02%-5.91% in weight ratios), and unique double-shell hollow structures. Especially, the sample of N-DHMCSs-800 carbonized at 800 degrees C exhibits a high discharge specific capacity of 920.3 mA h/g at a current density of 0.1 A/g after 100 cycles. In addition, at a relative high current density of 0.5 A/g, its discharge specific capacity is up to 614.1 mA h/g even after 300 cycles. More importantly, it demonstrates excellent rate capabilities by the fact that a high reversible capacity of 910.9 mA h/g was maintained after cycling at different current densities. Therefore, it is anticipated that such a facile "soft template" strategy can provide us a promising platform for preparing multishelled and hollow structured nanomaterials with various components and functions.