浸渍法制备活性炭/SnO_(2)纳米复合材料用于锂离子电池  

Active Carbon/SnO_(2)Nanocomposite Synthesized by Impregnation for Lithium-ion Batteries

作　　者：李海 杨军 李堂鹏 赵雷 王世星 LI Hai;YANG Jun;LI Tangpeng;ZHAO Lei;WANG Shixing(School of Material and Chemical Engineering,Tongren University,Tongren 554300,China;Guizhou Weite High Tech Energy Technology Co.,Ltd.,Bijie 553300,Chin)

机构地区：[1]铜仁学院材料与化学工程学院,贵州铜仁554300 [2]贵州唯特高新能源科技有限公司,贵州毕节553300

出　　处：《材料科学与工程学报》2023年第6期897-902,共6页Journal of Materials Science and Engineering

基　　金：Doctoral Research Initiation Fund of Tongren University(trxyDH1906)。

摘　　要：将活性炭(AC)浸泡于SnCl_(2)·2H_(2)O的无水乙醇溶液,后经真空抽滤并于氩气气氛中烧结,从而制备出AC/SnO_(2)纳米复合材料。活性炭中的纳米孔在SnO_(2)纳米颗粒的生成过程中充当了硬模板和反应器的作用,原位生成的SnO_(2)纳米颗粒均匀分散于活性炭基体中。作为锂离子电池负极材料,AC/SnO_(2)在100 mA·g^(-1)的电流密度下具有752 mAh·g^(-1)的首次可逆容量,循环200周后可逆容量为476 mAh·g^(-1),同时表现出良好的倍率性能。本研究报道的制备方法简单,SnO_(2)的含量可通过改变SnCl_(2)·2H_(2)O溶液的浓度进行调整。Activated carbon/SnO_(2)(AC/SnO_(2))nanocomposite had been synthesized by immersing AC in ethanol solution of SnCl_(2)·2H_(2)O,vacuum filtration,and final sintering under Ar atmosphere.The nano-pores in AC could act as hard template as well as reaction vessel for the formation of SnO_(2)nanoparticles(NPs).The in-situ formed SnO_(2)NPs were dispersed uniformly in AC matrix.As anode material for lithium-ion batteries,AC/SnO_(2)delivered a reversible capacity of 752 mAh·g^(-1)in the first cycle and 476 mAh·g^(-1)after 200 cycles at a current density of 100 mA·g^(-1),and also exhibited good rate capability.The synthesis route reported here is facile.The content of SnO_(2)in AC/SnO_(2)can be adjusted easily by change the concentration of the SnCl_(2)·2H_(2)O solution.

关 键 词：活性炭 SnO_(2)纳米颗粒 负极材料 锂离子电池 

分 类 号：TB332[一般工业技术—材料科学与工程]