Layered double hydroxides derived NiCo-sulfide as a cathode material for aluminum ion batteries. (1st June 2020)

• Record Type: Journal Article
• Authors: Xing, Wei; Li, Xiaochen; Cai, Tonghui; Zhang, Yu; Bai, Peng; Xu, Jing; Hu, Han; Wu, Mingbo; Xue, Qingzhong; Zhao, Yi; Zhou, Jin; Zhuo, Shuping; Gao, Xiuli; Yan, Zifeng
• Is Part Of: Electrochimica acta. Volume 344(2020)
• Publication Date: 2020-06-01
• Subjects: Aluminum-ion battery -- Layered double hydroxide -- Metal sulfide -- Cathode material -- Specific capacity; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2020.136174
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Aluminum-ion batteries (AIBs) is a type of emerging device for large scale energy storage. Developing new and efficient cathode materials is a hotspot in this research area. Herein, a strategy combining the layer double hydroxides (LDHs) synthesis in the presence of graphene oxide (GO) and subsequent sulfidation is developed to prepare a composite of nickel-cobalt sulfides and reduced graphene oxide (rGO). The resulting sulfurized product (S–NiCo@rGO) exhibits a high discharge capacity of 248.2 mA h g −1 at the current density of 1 A g −1 and maintains a discharge capacity of 83 mA h g −1 with nearly 100% coulombic efficiency after 100 cycles. The energy storage mechanism of this material is disclosed to be due to the substitution of Ni 2+ and Co 2+ /Co 3+ by Al 3+ . The material and the finding obtained in this work are significant for the development of high performance AIBs using LDH-derived materials.