MoS_(2)/MoO_(2) nanosheets anchored on carbon cloth for high-performance magnesium-and sodium-ion storage  

作　　者：Hui Wu Zhennan Xiong Yiyang Mao Huihui Zhang Yingying Hu Jun Shen Baofeng Wang Xuebin Yu 

机构地区：[1]Department of Materials Science,Fudan University,Shanghai 200433,China [2]Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power,Shanghai University of Electric Power,Shanghai 200090,China

出　　处：《Journal of Materials Science & Technology》2023年第12期43-53,共11页材料科学技术（英文版）

基　　金：financially supported by in part the National Science Fund for Distinguished Young Scholars (No.51625102);the National Natural Science Foundation of China (Nos.51971065,22075173);the Innovation Program of Shanghai Municipal Educa-tion Commission (No.2019-01-07-00-07-E00028);the Science and Science and Technology Commission of Shanghai Municipality (Nos.19DZ2271100 and 21010501100).

摘　　要：Developing new types of rechargeable metal-ion batteries beyond lithium-ions,including alkaline ion(such as Na+,K+)and multivalent ion(such as Mg 2+,Zn 2+,Ca 2+and Al 3+)batteries,is progressing quickly towards large-scale energy storage systems.However,the major obstacle to their large-scale applications has been a lack of appropriate electrode materials with reversible metal ions insertion/extraction be-havior,resulting in inferior electrochemical performance.Here we develop a well-designed MoS_(2)/MoO_(2) hybrid nanosheets anchored on carbon cloth(MoS_(2)/MoO_(2)/CC)as electrode materials.This rational de-sign can effectively shorten ion diffusion distance,increase electric conductivity of the electrode,and buffer volume change.Benefiting from the synergistic effect of structural and compositional features,the MoS_(2)/MoO_(2)/CC electrode exhibits high initial reversible capacities(326 mA h g^(−1) at 0.1 A g^(−1) in magnesium-ion storage;1270 mA h g^(−1) at 0.1 A g^(−1) in sodium-ion storage),excellent rate capacities(57 mA h g^(−1) at 10 A g^(−1) in magnesium-ion storage;335 mA h g^(−1) at 5 A g^(−1) in sodium-ion storage)and long-term cycling stability(105 mA h g^(−1) after 600 cycle at 1 A g^(−1) in magnesium-ion storage;208 mA h g^(−1) after 600 cycles at 5 A g^(−1) in sodium-ion storage).We expect that the multi-engineering strategy will provide some valuable insights for the development of other advanced electrode materials for high-performance metal-ion batteries.

关 键 词：Metal-ion batteries MoS_(2)/MoO_(2)/CC Magnesium and sodium storage High reversibility 

分 类 号：TM912[电气工程—电力电子与电力传动] TB332[一般工业技术—材料科学与工程]