Carbon and few-layer MoS2 nanosheets co-modified TiO2 nanosheets with enhanced electrochemical prope

• 作 者: Hui-Hui Lu Chun-Sheng Shi Nai-Qin Zhao En-Zuo Liu Chun-Nian He Fang He
• 机 构: Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University, Tianjin 300350, Chi
• 出 处: 稀有金属（英文版）
• 发表日期: 2018年2期
• 关键词: Few-layer MoS2 nanosheets Carbon Co-modified TiO2 nanosheets Lithium-ion battery

Carbon and few-layer MoS2 nanosheets co-modified TiOa nanocomposites (defined as MoS2-C@TiO2)were prepared through a facile one-step pyrolysis reaction technique.In this unique nanostructure,the TiO2 nanosheets with stable structure serve as the backbones,and carbon coating and few-layer MoS2 tightly adhere onto the surface of the TiO2.It needs to be pointed out that the carbon coating improves the overall electronic conductivity and the few-layer MoS2 facilitates the diffusion of lithium ions and offers more active sites for lithium-ion storage.As a result,when evaluated as lithium-ion battery anodes,the MoS2-C@TiO2 nanocomposites exhibit markedly enhanced lithium storage capability compared with pure TiO2.A high specific capacity of 180 mA·h·g-1 has been achieved during the preliminary cycles,and the specific capacity can maintain 160 mA·h·g-1 at a high current density of 1C (1C=167 mA·g-1) even after 300 discharge/charge cycles,indicating the great potential of the MoS2-C@TiO2 on energy storage.