新型炭材料（中英文）2024，Vol.39Issue(5)：992-1002,11.DOI:10.1016/S1872-5805(24)60850-4
多孔硅碳复合材料实现高性能锂离子电池
Porous silicon/carbon composites as anodes for high-performance lithium-ion batteries
摘要
Abstract
Silicon anodes are promising for use in lithium-ion batteries.However,their practical application is severely limited by their large volume expansion leading to irreversible material fracture and electrical disconnects.This study proposes a new top-down strategy for preparing microsize porous silicon and introduces polyacrylonitrile(PAN)for a nitrogen-doped carbon coating,which is designed to maintain the internal pore volume and lower the expansion of the anode during lithiation and delithiation.We then ex-plore the effect of temperature on the evolution of the structure of PAN and the electrochemical behavior of the composite electrode.After treatment at 400 ℃,the PAN coating retains a high nitrogen content of 11.35 at％,confirming the presence of C—N and C—O bonds that improve the ionic-electronic transport properties.This treatment not only results in a more intact carbon layer structure,but also introduces carbon defects,and produces a material that has remarkable stable cycling even at high rates.When cycled at 4 A g,the anode had a specific capacity of 857.6 mAh g-1even after 200 cycles,demonstrating great potential for high-capacity en-ergy storage applications.关键词
多孔硅/锂离子电池/聚丙烯腈/电化学行为Key words
Porous silicon/Lithium-ion batteries/Polyacrylonitrile/Electrochemical behavior分类
通用工业技术引用本文复制引用
田振宇,智林杰,王雅飞,秦欣,Shaislamov Ulugbek,Hojamberdiev Mirabbos,郑同晖,董烁,张兴豪,孔德斌..多孔硅碳复合材料实现高性能锂离子电池[J].新型炭材料（中英文）,2024,39(5):992-1002,11.基金项目
This work was financially supported by National Key Research and Development Program(2022YFE0127400),National Energy-Saving and Low-Carbon Materials Production and Application Demonstration Platform Program(TC220H06N),the National Natural Science Foundation of China(U20A20131),and Taishan Scholar Project of Shan-dong Province(No.ts202208832). 国家重点研发计划(2022YFE0127400) （2022YFE0127400）
国家节能低碳材料生产与应用示范平台计划(TC220H06N) （TC220H06N）
国家自然科学基金(U20A20131) （U20A20131）
山东省泰山学者项目(No.ts202208832). （No.ts202208832）
