SiOx/C-Ag nanosheets derived from Zintl phase CaSi_(2) via a facile redox reaction for high performance lithium storage  

作　　者：Jie Xie Lin Sun Yanxiu Liu Xinguo Xi Ruoyu Chen Zhong Jin 

机构地区：[1]Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology,School of Petrochemical Engineering,Changzhou University,Changzhou 213164,China [2]School of Chemistry and Chemical Engineering,Yancheng Institute of Technology,Yancheng 224051,China [3]Key Laboratory of Mesoscopic Chmistry of Ministry of Education(MOE),School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China

出　　处：《Nano Research》2022年第1期395-400,共6页纳米研究（英文版）

基　　金：supported by the National Key Research and Development Program of China(Nos.2017YFA0208200 and 2016YFB0700600);the Fundamental Research Funds for the Central Universities of China(No.0205-14380219);the National Natural Science Foundation of China(Nos.22022505,51772258,21872069,and 51761135104);the Natural Science Foundation of Jiangsu Province(Nos.BK20181056,BK20180008,and BK20191042);Jiangsu Postdoctoral Science Fundation(No.2020Z258);Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology(No.SKLPST201901);Funding for school-level research projects of Yancheng Institute of Technology(No.xjr2019006).

摘　　要：As one of the high-capacity anodes in lithium-ion batteries(LIBs),silicon oxide(SiOx)has attracted wide attention due to its high theoretical capacity,low cost,and proper working voltage.However,the huge volume change and the intrinsic poor conductivity of SiOx still hinder the practical applications.How to address the issues is the focus of current research.In this work,firstly,hydrogen passivated Si nanosheets(Si6H6)were prepared from Zintl phase CaSi2,then,two-dimensional Ag nanoparticle modified SiOVC nanocomposite was prepared via a facile complex redox reaction between SieH6 and AgN03-aniline complexing agent.In this design,aniline was served as carbon sources,and Si6H6could be transformed to SiOx by AgN03 in mild solution condition.The obtained Ag modified SiOVC(SiOx/C-Ag)electrode exhibited high specific capacity(550 mAh·g^(-1)at 0.6 A·g^(-1)),superior rate,and cycling performance when served as anode for LIBs.

关 键 词：SIOX ANODE LIBS redox reaction two-dimensional structure solution synthesis 

分 类 号：TM912[电气工程—电力电子与电力传动] TB383[一般工业技术—材料科学与工程]