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摘要
以石墨烯为添加剂，利用一步水热法制备出石墨烯包覆三维花状SnS2纳米结构，制得的复合纳米材料由石墨烯和数十个纳米薄片组装而得的SnS2纳米花球构成。利用XRD、SEM等对材料的晶体结构和形貌进行表征，同时研究了其电化学性能。在1 000 mA/g的电流密度下循环50次后，SnS2/石墨烯复合材料的可逆容量仍然可达503.1 mAh/g，容量保持率高达82%。
Abstract
Graphene coated three-dimensional SnS2 nanostructure is synthysized via one-step hydrothermal method,with graphene as additives.The as-synthesized composite nanomaterials consists of graphene and flower-like SnS2 mirospheres assembling with dozens of nanoflakes.XRD and SEM are used to characterize the crystal structure and morphology of the as-synthesized products.Their electrochemical properties are studied too.The reversible capacity of SnS2/graphene composite materials remains 503.1 mAh·g-1 with a capacity retention rate of 82% after 50 cycles at a current density of 1 000 mA·g-1.
关键词
锂离子电池
/
纳米花
/
石墨烯
/
SnS2
/
负极材料
Key words
lithium ion battery
/
nanoflower
/
graphene
/
SnS2
/
anode materials
Author summay
郝文(1989-),男,硕士研究生,主要从事锂离子电池方面的研究,1013082034@qq.com。
SnS2纳米花/石墨烯锂离子电池负极材料合成及其电化学性能研究[J].
现代化工, 2018, 38(8): 103-107 DOI:10.16606/j.cnki.issn0253-4320.2018.08.022
