文献类型：期刊文献

英文题名：Hierarchical modulation of NiSe2 nanosheets/nanodendrites by phase engineering on N-doped 3D porous graphene as self-supporting anode for superior lithium ion batteries

作者：Zhou, Chencheng[1];Zhang, Peilin[1];Wang, Weiwei[1];Yang, Yang[1];Wang, Wanqing[1];Ding, Hualong[1];Xu, Xicheng[1];Ji, Wuxing[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：2021

卷号：567

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20213110721650);WOS:【SCI-EXPANDED(收录号:WOS:000691125800005)】；

基金：This work was supported by the National Natural Science Foundation of China (51502092), the Fundamental Research Funds for the Central Universities (JKD01211601, 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：Hierarchical structure; Three-dimensional N-doped graphene; NiSe2; Chemical vapor deposition; Lithium ion batteries

摘要：In order to deal with the shortage of fossil fuel reserves and environmental pollution, lithium-ion batteries (LIBs) have been widely studied as a new type of sustainable green energy device. In the work, the NiSe2 nanosheets/ nanodendrites hierarchical material with two phases is deposited on the framework of three-dimensional nitrogen-doped graphene (NPG) through the hydrothermal method to construct a self-supporting anode for LIBs. The NPG has ultralow self-weight as well as excellent electrical conductivity, which inhibits the agglomeration during the growth of active materials. Furthermore, the unique hierarchical NiSe2 active material also relieves its structural damage during the charge and discharge process. As a result, the NiSe2 combined with NPG (NiSe2@NPG) expresses specific capacities of 860 mAh/g and 568 mAh/g at current densities of 0.2 A/g and 3.2 A/g, respectively, making it a promising lithium-ion battery anode material.