新型炭材料（中英文）2024，Vol.39Issue(3)：538-548,11.DOI:10.1016/S1872-5805(24)60851-6
磺酰氯促进金属氯化物插层石墨以实现高效钠存储
Sulfonyl chloride-intensified metal chloride intercalation of graphite for efficient sodium storage
摘要
Abstract
Metal chloride-intercalated graphite with excellent conductivity and a large interlayer spacing is highly desired for use in sodium ion batteries.However,halogen vapor is usually indispensable in initiating the intercalation process,which makes equip-ment design and experiments challenging.In this work,SO2Cl2 was used as a chlorine generator to intensify the intercalation of BiCl3 into graphite(BiCl3-GICs),which avoided the potential risks,such as Cl2 leakage,in traditional methods.The operational efficiency in the experiment was also improved.After the reaction of SO2Cl2,BiCl3,and graphite at 200℃ for 20 h,the synthesized BiCl3-GICs had a large interlayer spacing(1.26 nm)and a high amount of BiCl3 intercalation(42％),which gave SIBs a high specific capacity of 213 mAh g-1 at 1 A g-1 and an excellent rate performance(170 mAh g-1 at 5 A g-1).In-situ Raman spectra revealed that the electron-ic interaction between graphite and intercalated BiCl3 is weakened during the first discharge,which is favorable for sodium storage.This work broadly enables the increased intercalation of other metal chloride-intercalated graphites,offering possibilities for develop-ing advanced energy storage devices.关键词
磺酰氯/金属氯化物-石墨插层化合物/插层强化过程/负极材料/钠离子电池Key words
Chlorine generator/Metal chloride-intercalated graphite/Intercalation intensification process/Anode material/Sodium-ion batteries分类
化学化工引用本文复制引用
兰淑琴,邱介山,任伟成,王钊,于畅,余金河,刘迎宾,谢远洋,张秀波,王健健..磺酰氯促进金属氯化物插层石墨以实现高效钠存储[J].新型炭材料（中英文）,2024,39(3):538-548,11.基金项目
This work was partly supported by the National Key Research and Development Program of China(2022YFB4101600),the Fundamental Research Funds for the Central Universities(DUT22ZD207,DUT22LAB612),and the Shandong Provincial Natur-al Science Foundation(ZR2023QB095). （2022YFB4101600）
