虎门体育官方登录入口网

虎门体育官方登录入口网:标题

Improved coulombic efficiency and cycleability of SnO2-Cu-graphite composite anode with dual scale embedding structure

虎门体育官方登录入口网:作者

作者:Lu, B (Lu, Bin)^[1,2 ]; Hu, RZ (Hu, Renzong)^[1,2 ]; Liu, JW (Liu, Jiangwen)^[1,2 ]; Liu, J (Liu, Jun)^[1,2 ]; Wang, H (Wang, Hui)^[1,2 ]; Zhu, M (Zhu, Min)^[1,2 ]

虎门体育官方登录入口网:期刊信息

虎门体育官方登录入口网:摘要

To improve the coulombic efficiency (CE) and cycle life of SnO2 anode in lithium ion batteries, SnO2-Cu-graphite composites with dual scale embedding structure are synthesized by ball milling. The SnO2-Cu composite, in which SnO2 nanoparticles with grain size less than 10 nm are uniformly dispersed in inactive nanocrystalline Cu matrix, is firstly obtained by milling the mixture of SnO2 and Cu nanopowders (molar ratio 1 : 2), and then further milling with graphite (C) to obtain SnO2-Cu-C composite with microsized graphite sheets as matrix of SnO2-Cu composite. The 50 h-milled SnO2-Cu composite exhibits higher initial CE (76.0 +/- 1.5%) and subsequent CE than 50 h-milled SnO2. Furthermore, the SnO2-Cu-C composite anode is capable of retaining a maximum charge capacity of 450.8 mA h g(-1) at 100 mA g(-1) after 80 cycles with a capacity retention ratio of 74.4%, displaying superior cyclic stability to as-milled SnO2, SnO2-Cu and SnO2-C composites. The improved CE and cycleability are attributed to the unique dual scale embedding structure that offers good conductivity of electron and lithium ion as well as the nanostructure stability of active materials. This unique composite structure might be extended to other high-capacity anode materials, to achieve high performance lithium ion batteries.

虎门体育官方登录入口网:关键词

KeyWords Plus:LITHIUM-ION BATTERIES; ELECTROCHEMICAL PERFORMANCE; STORAGE PROPERTIES; HIGH-CAPACITY; SNO2; CARBON; OXIDE; MICROSPHERES; CHALLENGES; LITHIATION

虎门体育官方登录入口网:作者信息

作者信息

通讯作者地址:Hu, RZ; Wang, H (通讯作者)

S China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China.   增强组织信息的名称     South China University of Technology

通讯作者地址:Hu, RZ; Wang, H (通讯作者)

S China Univ Technol, China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Guangdong, Peoples R China.   增强组织信息的名称     South China University of Technology

地址:

	[ 1 ] S China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China   增强组织信息的名称     South China University of Technology
	[ 2 ] S China Univ Technol, China Australia Joint Lab Energy & Environm Mat, Guangzhou 510641, Guangdong, Peoples R China   增强组织信息的名称     South China University of Technology

电子邮件地址:msrenzonghu@scut.edu.cn; mehwang@scut.edu.cn

虎门体育官方登录入口网:出版商

ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND

虎门体育官方登录入口网:类别分类