School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.
Angew Chem Int Ed Engl. 2016 Jun 20;55(26):7423-6. doi: 10.1002/anie.201601673. Epub 2016 Apr 20.
Highly uniform Mo-glycerate solid spheres are synthesized for the first time through a solvothermal process. The size of these Mo-glycerate spheres can be easily controlled in the range of 400-1000 nm by varying the water content in the mixed solvent. As a precursor, these Mo-glycerate solid spheres can be converted into hierarchical MoS2 hollow nanospheres through a subsequent sulfidation reaction. Owing to the unique ultrathin subunits and hollow interior, the as-prepared MoS2 hollow nanospheres exhibit appealing performance as the anode material for lithium-ion batteries. Impressively, these hierarchical structures deliver a high capacity of about 1100 mAh g(-1) at 0.5 A g(-1) with good rate retention and long cycle life.
首次通过溶剂热法合成了高度均匀的 Mo-甘油酸盐固体球。通过改变混合溶剂中的含水量,可以将这些 Mo-甘油酸盐球的尺寸轻松控制在 400-1000nm 范围内。作为前体,这些 Mo-甘油酸盐固体球可以通过随后的硫化反应转化为分级 MoS2 空心纳米球。由于具有独特的超薄亚单位和空心内部,所制备的 MoS2 空心纳米球作为锂离子电池的阳极材料表现出了吸引人的性能。令人印象深刻的是,这些分级结构在 0.5A/g 的电流密度下提供了约 1100mAh/g 的高容量,并且具有良好的倍率保持能力和长循环寿命。