典型文献
Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure
文献摘要：
Silicon anodes are considered to be the most promising alternatives owing to their theoretical specific capacity,which is almost 10 times higher than that of graphite anodes.However,huge volume changes during charging and discharging affect their interface stability,which strongly limits their application in commercial batteries.Herein,a popcorn-structured silicon-carbon composite(SiNPs@graphene@C),com-posed of silicon nanoparticles(SiNPs),graphene spheres and pitch-based carbon,is prepared by spray-drying followed by a wet process.The resulting SiNPs@graphene@C composite has good flexibility and elastic-strain capacity due to the graphene substrate,and it possesses macrostructural integrity and mechanical stability during cycling due to the rigid carbon-carbon chemical bonds.As a result,it shows a discharge-specific capacity of 481.3 mAh g-1 and a capacity retention of 82.9％after 500 cycles at 1 A g1.Besides,the initial coulomb efficiency is increased from 65.7％to 86.5％by pre-lithiation,which improves the feasibility of commercialising the SiNPs@graphene@C composite.
文献关键词：
中图分类号：
作者姓名：
Hong Dong;Feifei Zong;Jie Wang;Hao Ding;Peng Wang;Ru Song;Ningshuang Zhang;Xuchun Cui;Shiyou Li
作者机构：
School of Petrochemical Technology,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province,Lanzhou 730050,Gansu,China;Gansu Engineerin Laboratory of Cathode Material for Lithium-ion Battery,Baiyin 730900,Gansu,China
文献出处：
引用格式：
[1]Hong Dong;Feifei Zong;Jie Wang;Hao Ding;Peng Wang;Ru Song;Ningshuang Zhang;Xuchun Cui;Shiyou Li-.Design and performance improvement of SiNPs@graphene@C composite with a popcorn structure)[J].能源化学,2022(09):405-415
A类：
popcorn,macrostructural,commercialising
B类：
Design,performance,improvement,SiNPs,graphene,composite,Silicon,anodes,considered,be,promising,alternatives,owing,their,theoretical,specific,capacity,which,almost,times,higher,than,that,graphite,However,huge,volume,changes,during,discharging,affect,interface,stability,strongly,limits,application,batteries,Herein,structured,silicon,carbon,posed,nanoparticles,spheres,pitch,prepared,by,spray,drying,followed,wet,process,resulting,has,good,flexibility,elastic,strain,due,substrate,possesses,integrity,mechanical,cycling,rigid,chemical,bonds,shows,discharge,mAh,retention,after,cycles,g1,Besides,initial,coulomb,efficiency,increased,from,lithiation,improves,feasibility
AB值：
0.569302
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