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先进锂离子电池用三维纳米花状MoS2/石墨阳极(英文)
3D MoS2/graphene nanoflowers as anode for advanced lithium-ion batteries
【摘要】 采用两步水热合成法将垂直的二硫化钼(MoS2)纳米片可控地负载于石墨烯表面形成纳米花。二硫化钼纳米片和石墨烯形成紧密结合的垂直交互网络结构,使电极具有高的机械完整性和循环稳定性。所得MoS2/石墨烯纳米花阳极在1000 mA/g电流密度下稳定循环700次后,仍具有901.8 mA·h/g的超高比容量,且从第二次循环开始,相应的容量保持率为98.9%。
【Abstract】 Vertical MoS2 nanosheets were controllably patterned onto graphene as nanoflowers through a two-step hydrothermal method. The interconnected network and intimate contact between MoS2 nanosheets and graphene by vertical channels enabled a high mechanical integrity of electrode and cycling stability. In particular, MoS2/graphene nanoflowers anode delivered an ultrahigh specific capacity of 901.8 mA·h/g after 700 stable cycles at 1000 mA/g and a corresponding capacity retention as 98.9% from the second cycle onwards.
【关键词】 二硫化钼;
石墨烯;
三维纳米花;
纳米片;
锂离子电池;
【Key words】 MoS2; graphene; 3D nanoflowers; nanosheets; lithium-ion batteries;
【Key words】 MoS2; graphene; 3D nanoflowers; nanosheets; lithium-ion batteries;
【基金】 The financial support of the Natural Science Foundation of Changsha, China (No. kq2202094);National Key R&D Program of China (No. 2021YFB3701400)
- 【文献出处】 Transactions of Nonferrous Metals Society of China ,中国有色金属学报(英文版) , 编辑部邮箱 ,2022年12期
- 【分类号】TM912;TB383.1
- 【下载频次】24