文献类型：期刊文献

英文题名：Highly uniform nitrogen-doped carbon decorated MoO2 nanopopcorns as anode for high-performance lithium/sodium-ion storage

作者：Zhang, Peilin[1];Guo, Shouzhi[1];Liu, Jinzhe[1];Zhou, Chencheng[1];Li, Shuo[1];Yang, Yun[1];Wu, Jing[1];Yu, Di[1];Chen, Luyang[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：2020

卷号：563

起止页码：318

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20195207922948);WOS:【SCI-EXPANDED(收录号:WOS:000510313700033)】；

基金：This work was supported by the National Natural Science Foundation of China (51502092), the Fundamental Research Funds for the Central Universities (222201718002), the Thousand Talents Program Young Project in China, and the Program for Eastern Scholar at Shanghai Institutions of Higher Learning (TP2015028).

语种：英文

外文关键词：Molybdenum oxides; Dual-annealing; Nanopopcorns structure; Polypyrrole-derived N-doped carbon; Lithium/sodium ion storage

摘要：Molybdenum dioxides (MoO2) featuring low cost and high theoretical capacity endow them competitive anode materials for lithium-ion batteries (LIBs)/sodium-ion batteries (SIBS). However, the low electrical conductivity and severe volume expansion occurring during the ion insertion/extraction process hamper their practical application. Herein, a novel dual-annealing design has been developed for the synthesis of highly uniform MoO2 nanopopcorns decorated with nitrogen-doped carbon shell (MoO2/NC). Owing to the unique structural characteristics and vital amorphous NC component, the MoO2/NC nanopopcorn hybrid composite exhibits stabilized charge storage capacity of 1073 mAh g(-1) after 200 cycles for LIBs, while 301 mAh g(-1) after 500 cycles for SIBS at 0.5 A g(-1). Furthermore, when the current density increases to 5 A g(-1), the specific capacity could still maintain 630 mAh g(-1) and 174 mAh g(-1) for LIBs and SIBS, respectively, which disclose the outstanding rate capability of MoO2/NC nanopopcorn anode. (C) 2019 Elsevier Inc. All rights reserved.