首页|SnS2/还原氧化石墨烯合成及在锂离子电池中应用

SnS2/还原氧化石墨烯合成及在锂离子电池中应用

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通过水热法制备了SnS2/还原氧化石墨烯(SnS2/RGO)复合材料,采用X射线衍射谱(XRD)、拉曼光谱(Raman)、X射线光电子能谱(XPS)和N2吸附-脱附表征SnS2/RGO复合材料的物相晶型、化学基团、元素组成和比表面积与孔隙孔径.SnS2/RGO复合材料作为锂离子电池负极材料组装纽扣电池.结果表明:电流密度100 mA/g条件下,SnS2/RGO复合材料的充放电比容量明显高于纯SnS2,SnS2/RGO复合材料第一次放电比容量高达2803 mAh/g,表现出优异的电化学性能.循环100次后放电比容量仍然可以达到941 mAh/g,而循环100次后纯SnS2的放电比容量远低于SnS2/RGO复合材料,仅为198 mAh/g,表现出良好的循环稳定性.1 000 mA/g的高电流密度下,SnS2/RGO复合材料放电比容量依然可以达到696 mAh/g,表现出良好的倍率性能.
Synthesis of SnS2/reduced graphene oxide and its application in lithium ion batteries
SnS2/reduced graphene oxide(SnS2/RGO)composites were prepared by hydrothermal method.The phase,chemical groups,elemental composition,specific surface area and pore size of SnS2/RGO composites were characterized by X-ray diffraction spectroscopy(XRD),Raman spectroscopy(Raman),X-ray photoelectron spectroscopy(XPS)and N2 adsorption-desorption.SnS2/RGO composites were used as anode materials for lithium ion batteries to assemble button batteries.The results show that the charge-discharge specific capacity of SnS2/RGO composite is significantly higher than that of pure SnS2 at a current density of 100 mA/g.The first discharge specific capacity of SnS2/RGO composite is as high as 2 803 mAh/g,showing excellent electrochemical performance.After 100 cycles,the discharge specific capacity can still reach 941 mAh/g,while the discharge specific capacity of pure SnS2 is much lower than that of SnS2/RGO composite after 100 cycles,only 198 mAh/g,showing good cycle stability.At a high current density of 1 000 mA/g,the discharge specific capacity of SnS2/RGO composite can still reach 696 mAh/g,showing good rate performance.

SnS2reduction of graphene oxidelithium ion batteryelectrochemical performancebattery anode material

涂敏、陈息坤

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珠海市嘉德电能科技有限公司,广东珠海 519000

上海大学电气工程学院,上海 200000

SnS2 还原氧化石墨烯 锂离子电池 电化学性能 电池负极材料

2024

电镀与精饰
天津市电镀工程学会

电镀与精饰

CSTPCD北大核心
影响因子:0.522
ISSN:1001-3849
年,卷(期):2024.46(12)