title: A simple melting-diffusing-reacting strategy to fabricate S/NiS2-C for lithium-sulfur batteries.
abstract: S/NiS2-C composites were fabricated using a sample melting-diffusing-reacting strategy. When the elemental sulfur content in the composite is 54.9 wt%, it shows good cyclic performance and delivers a specific capacity of 730 mA h g-1after 200 cycles at 0.5 C and 544 mA h g-1after 500 cycles at 2 C. The elemental sulfur content can be adjusted, and when the elemental sulfur content is increased to 64.8 wt% and 76.0 wt%, the cathodes can maintain a stable cyclic capacity of 386 and 312 mA h g-1after being discharged/charged at 2 C for 500 cycles respectively. The carbon structure and the uniformly distributed nickel disulfide in the S/NiS2-C composites efficiently stabilizes the polysulfides and also facilitates the conversion of electrochemical reactions.
authors.affiliation: Hefei National Laboratory for Physical Science at Micro-scale, Department of Chemistry, University of Science and Technology of China, 96 JinZhai Road, Hefei 230026, P. R. China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Lu
authors.affiliation: Hefei National Laboratory for Physical Science at Micro-scale, Department of Chemistry, University of Science and Technology of China, 96 JinZhai Road, Hefei 230026, P. R. China.
authors.forename: Xiaona
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China. ytqian@ustc.edu.cn ychzhu@ustc.edu.cn.
authors.forename: Jianwen
authors.initials: J
authors.lastname: Liang
authors.affiliation: Hefei National Laboratory for Physical Science at Micro-scale, Department of Chemistry, University of Science and Technology of China, 96 JinZhai Road, Hefei 230026, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Hu
authors.affiliation: Hefei National Laboratory for Physical Science at Micro-scale, Department of Chemistry, University of Science and Technology of China, 96 JinZhai Road, Hefei 230026, P. R. China.
authors.forename: Yongchun
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Hefei National Laboratory for Physical Science at Micro-scale, Department of Chemistry, University of Science and Technology of China, 96 JinZhai Road, Hefei 230026, P. R. China and School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, P. R. China. ytqian@ustc.edu.cn ychzhu@ustc.edu.cn.
authors.forename: Yitai
authors.initials: Y
authors.lastname: Qian