文献类型：期刊文献

英文题名：Architecture and performance of Si/C microspheres assembled by nano- Si via electro-spray technology as stability-enhanced anodes for lithium- ion batteries

作者：Li, Wangwu[1];Peng, Jiao[1];Li, Hui[1];Wu, Zhenyu[1];Chang, Baobao[2];Guo, Xiaowei[3];Chen, Gairong[3];Wang, Xianyou[1]

第一作者：Li, Wangwu

通讯作者：Wang, XY[1]

机构：[1]Xiangtan Univ, Sch Chem, Hunan Prov Key Lab Electrochem Energy Storage & C, Natl Base Int Sci & Technol Cooperat,Natl Local J, Xiangtan 411105, Hunan, Peoples R China;[2]Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou 450001, Henan, Peoples R China;[3]Xinxiang Univ, Sch Chem & Mat Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：Xiangtan Univ, Sch Chem, Hunan Prov Key Lab Electrochem Energy Storage & C, Natl Base Int Sci & Technol Cooperat,Natl Local J, Xiangtan 411105, Hunan, Peoples R China

通讯机构：[1]corresponding author), Xiangtan Univ, Sch Chem, Hunan Prov Key Lab Electrochem Energy Storage & C, Natl Base Int Sci & Technol Cooperat,Natl Local J, Xiangtan 411105, Hunan, Peoples R China.

年份：2022

卷号：903

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20220511575588);Scopus(收录号：2-s2.0-85123776418);WOS:【SCI-EXPANDED(收录号:WOS:000779661500003)】；

基金：Acknowledgments This work was supported financially by the Key Project of Strategic New Industry of Hunan Province (No. 2019GK2032) and the National Natural Science Foundation of China (No. U19A2018) . The authors would like to thank Shiyanjia Lab ( www.shiyanjia.com ) for the XPS and TEM test.

语种：英文

外文关键词：Nano-Si; Electro-spray; Si; C microspheres; Anode material; Lithium-ion batteries

摘要：Si-based anodes have revealed the potential as the next generation of lithium ion battery anode material, whereas the poor conductivity and huge volume changes during (de)lithiation process of silicon still limit their practical application. Herein, the Si/nitrogen doped carbon layer/carbon framework microspheres (SCM) are designed by nano-Si via electro-spray technology as anodes for lithium ion batteries. It has been found that the SCM consists of individual carbon-coated nano-Si primary particles linked by PAN framework, in which the carbon buffer layer can further absorb the stress of volume changes during charge/ discharge process, and the carbon framework carbon framework not only provides fast diffusion path of electron, but also effectively reduces the consumption of electrolyte. Therefore, the initial columbic efficiency (ICE) of SCM anode can reach as high as 72%, and the SCM anode also shows a high specific capacity of 1192 mAh g(-1) at 0.2 A g(-1) and keeps a reversible capacity of 746 mAh g(-1 & nbsp;)after 200 cycles, demonstrating the as-designed SCM possesses an high ICE and a good electrochemical performance. This strategy provides a significant inspiration for fabricating high-performance Si/C anode materials of lithium-ion battery. (C)& nbsp;2022 Elsevier B.V. All rights reserved.