文献类型：期刊文献

英文题名：Single-phase ZnCo2O4 derived ZnO-CoO mesoporous microspheres encapsulated by nitrogen-doped carbon shell as anode for high-performance lithium-ion batteries

作者：Liu, Jinzhe[1];Wu, Jing[1];Zhou, Chencheng[1];Zhang, Peilin[1];Guo, Shouzhi[1];Li, Shuo[1];Yang, Yun[1];Li, Kuang[1];Chen, Luyang[1];Wang, Mingyi[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Polystar Engn Plast Shanghai CO Ltd, Shanghai 201612, Peoples R China

年份：2020

卷号：825

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20200708155380);WOS:【SCI-EXPANDED(收录号:WOS:000514848600089)】；

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：ZnO-CoO; Self-templated method; N-doped carbon shell; Mesoporous microspheres; Lithium ion batteries

摘要：The nanostructured hybrids composed of binary transition metal oxides (bi-TMOs) have emerged as promising anode materials in lithium ion batteries (LIBs) because of their unique physicochemical properties. Herein, we report ZnO/CoO mesoporous microspheres encapsulated by nitrogen-doped carbon shells (ZnO-CoO@NC) via self-templated solvothermal synthesis and subsequent in-situ pyrolysis of polypyrrole. The core of nanohybrid is derived from single-phase ZnCo2O4 microspheres and consists of uniform two-phase ZnO/CoO nanocrystals with interparticle mesopores. By virtue of the conductive layer of N-doped carbon and the interaction between mixed ZnO and CoO, the ZnO-CoO@NC mesoporous microspheres manifest the superior lithium storage properties as anode for LIBs, which exhibits the high Li+ storage capacity and the excellent cycling performance (1457 mAh g(-1) at 0.5 A g(-1) after 500 cycles), along with the competitive rate capability (381 mAh g(-1) at 5 A g(-1)). (C) 2020 Elsevier B.V. All rights reserved.