标题:ZIF-Derived Cobalt-Containing N-Doped Carbon-Coated SiOx Nanoparticles for Superior Lithium Storage
作者:Zhang, Kaiyuan; Mao, Hongzhi; Gu, Xin; Song, Chunhua; Yang, Jian; Qian, Yitai
作者机构:[Gu, Xin] China Univ Petr East China, Inst New Energy, Coll New Energy, State Key Lab Heavy Oil Proc, Qingdao 266580, Shandong, Peoples R China.; [Z 更多
通讯作者:Gu, X;Yang, J
通讯作者地址:[Gu, X]China Univ Petr East China, Inst New Energy, Coll New Energy, State Key Lab Heavy Oil Proc, Qingdao 266580, Shandong, Peoples R China;[Yang, J] 更多
来源:ACS APPLIED MATERIALS & INTERFACES
出版年:2020
卷:12
期:6
页码:7206-7211
DOI:10.1021/acsami.9b20093
关键词:lithium-ion batteries; cobalt-containing N-doped carbon coating; anode;; SiOx nanoparticles; ZIF-67
摘要:N-Doped carbon-encapsulated SiOx and Co nanoparticles are synthesized by the calcination of ZIF-67-coated SiOx nanoparticles. This composite exhibits good electrochemical conductivity and superior accommodation to volume change from N-doped carbon and Co with SiOx nanoparticles, exhibiting improved cycle and rate performances for lithium storage. It retains a capacity of 1044 mA h g(-1) over 150 cycles at 1.5 A g(-1), outperforming those without Co or N-doped carbon. It well confirms the contributions of Co- and N-doped carbon to the electrochemical properties of SiOx. Even after 350 cycles at 1.0 A g(-1), this composite nonetheless delivers a capacity of 900 mA h g(-1). If it is coupled with LiFePO4, the full cells show a stable cycling, indicating the promising application of this composite.
收录类别:SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079343978&doi=10.1021%2facsami.9b20093&partnerID=40&md5=ac6b3454b58a731ca6b8c9038201348f
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