典型文献
High-performance Si-Containing anode materials in lithium-ion batteries:A superstructure of Si@Co–NC composite works effectively
文献摘要：
To mitigate the massive volume expansion of Si-based anode during the charge/discharge cycles, we synthesized a superstructure of Si@Co–NC composite via the carbonization of zeolite imidazolate frameworks incorporated with Si nanoparticles. The Si@Co–NC is comprised of Si-nanoparticle core and N-doped/Co-incorporated carbon shell, and there is void space between the core and the shell. When using as anode material for LIBs, Si@Co–NC displayed a super performance with a charge/discharge capacity of 191.6/191.4 mA h g-1 and a coulombic efficiency of 100.1％ at 1000 mA g-1 after 3000 cycles, and the capacity loss rate is 0.022％ per cycle only. The excellent electrochemical property of Si@Co–NC is because its electronic conductivity is enhanced by doping the carbon shell with N atoms and by incorporating with Co particles, and the pathway of lithium ions transmission is shortened by the hollow structure and abundant mesopores in the carbon shell. Also, the volume expansion of Si nanoparticles is well accommodated in the void space and suppressed by the carbon host matrix. This work shows that, through designing a superstructure for the anode materials, we can synergistically reduce the work function and introduce the confinement effect, thus significantly enhancing the anode materials' electrochemical performance in LIBs.
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作者姓名：
Qiongguang Li;Yanhong Wang;Jing Yu;Menglei Yuan;Qiangqiang Tan;Ziyi Zhong;Fabing Su
作者机构：
School of Chemical Engineering,University of Chinese Academy of Sciences,100049,Beijing,China;State Key Laboratory of Multiphase Complex Systems,CAS Key Laboratory of Green Process Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China;Zhongke Langfang Institute of Process Engineering,Fenghua Road No 1,Langfang Economic&Technical Development Zone,Hebei Province,065001,China d College of Engineering,Guangdong Technion Israel Institute of Technology(GTIIT),241 Daxue Road,Jinping District,Shantou,515063,China;Technion Israel Institute of Technology(IIT),Haifa,32000,Israel;Institute of Industrial Chemistry and Energy Technology,Shenyang University of Chemical Technology,Shenyang,110142,China
文献出处：
引用格式：
[1]Qiongguang Li;Yanhong Wang;Jing Yu;Menglei Yuan;Qiangqiang Tan;Ziyi Zhong;Fabing Su-.High-performance Si-Containing anode materials in lithium-ion batteries:A superstructure of Si@Co–NC composite works effectively)[J].绿色能源与环境（英文）,2022(01):116-129
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AB值：
0.486114
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