论文摘要
Rational design of hybrid carbon host with high electrical conductivity and strong adsorption toward soluble lithium polysulfides is the main challenge for achieving high-performance lithium–sulfur batteries（LSBs）. Herein, novel binder-free Ni@N-doped carbon nanospheres（N-CNSs） films as sulfur host are firstly synthesized via a facile combined hydrothermal-atomic layer deposition method. The cross-linked multilayer N-CNSs films can e ectively enhance the electrical conductivity of electrode and provide physical blocking "dams"toward the soluble long-chain polysulfides. Moreover, the doped N heteroatoms and superficial NiO layer on Ni layer can work synergistically to suppress the shuttle of lithium polysulfides by e ective chemical interaction/adsorption. In virtue of the unique composite architecture and reinforced dual physical and chemical adsorption to the soluble polysulfides, the obtained Ni@N-CNSs/S electrode is demonstrated with enhanced rate performance(816 mAh g-1 at 2 C) and excellent long cycling life（87% after 200 cycles at 0.1 C）, much better than N-CNSs/S electrode and other carbon/S counterparts. Our proposed design strategy o ers a promising prospect for construction of advanced sulfur cathodes for applications in LSBs and other energy storage systems.
论文目录
文章来源
类型: 期刊论文
作者: Jun Liu,Aixiang Wei,Guoxiang Pan,Qinqin Xiong,Fang Chen,Shenghui Shen,Xinhui Xia
来源: Nano-Micro Letters 2019年04期
年度: 2019
分类: 工程科技Ⅰ辑,工程科技Ⅱ辑
专业: 材料科学,工业通用技术及设备,电力工业
单位: Guangdong Provincial Key Laboratory of Functional Soft Condensed Matter, School of Materials and Energy, Guangdong University of Technology,Department of Information Science, Xinhua College of Sun Yat-sen University,Department of Materials Chemistry, Huzhou University,College of Materials and Environmental Engineering, Hangzhou Dianzi University,Department of Chemistry, Zhejiang University,State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and Department of Materials Science and Engineering, Zhejiang University,Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University
基金: supported by National Natural Science Foundation of China (Nos. 51772272 and 51728204),Fundamental Research Funds for the Central Universities (No. 2018QNA4011),Science and Technology Program of Guangdong Province of China (No. 2016A010104020),Pearl River S&T Nova Program of Guangzhou (No. 201610010116),Qianjiang Talents Plan D (QJD1602029),Startup Foundation for Hundred-Talent Program of Zhejiang University
分类号: TB383.2;TM912
页码: 147-160
总页数: 14
文件大小: 3013K
下载量: 7