CoSe2/MoS2 Heterostructures to Couple Polysulfide Adsorption and Catalysis in Lithium-Sulfur Batteries

• 作者: Zihan Shen Qingwen Zhou Huiling Yu Jiaming Tian Man Shi Chaoquan Hu Huigang Zhang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: Concise Reports
• 页码范围: 1138-1144
• 页数: 7页
• 语种: 英文
• DOI: 10.1002/cjoc.202000661

摘要

Main observation and conclusion Lithium-sulfur batteries have been regarded as one of most promising next-generation energy storage devices because of their high energy density and low cost.However,polysulfide shuttling and slow kinetics hinder the practical application.We fabricated hierar-chically heterostructured CoSe2/MoS2 nanoarrays on carbon clothes as the sulfur cathode host.The resulting heterostructures facili-tate electron conduction and improve electrolyte wetting.More importantly,the composite heterostructures couple the strong poly-sulfide adsorption of CoSe2 and high catalytic activity of MoS2 to synergistically accelerate polysulfide conversion,demonstrating higher catalytic activity than their individual components.