新型炭材料（中英文）2025，Vol.40Issue(5)：1085-1097,13.DOI:10.1016/S1872-5805(25)61003-1
定向调控表面官能团和微晶结构制备高电压锂离子电容器用活性炭
Tuning surface functional groups and crystallinity in activated carbon for high-voltage lithium-ion capacitors
摘要
Abstract
Lithium-ion capacitors(LICs)combine the high power dens-ity of electrical double-layer capacitors with the high energy density of lithium-ion batteries.However,they face practical limitations due to the narrow operating voltage window of their activated carbon(AC)cathodes.We report a scalable thermal treatment strategy to develop high-voltage-tolerant AC cathodes.Through controlled thermal treatment of commer-cial activated carbon(Raw-AC)under a H2/Ar atmosphere at 400-800℃,the targeted reduction of degradation-prone functional groups can be achieved while preserving the critical pore structure and increasing graph-itic microcrystalline ordering.The AC treated at 400°C(HAC-400)had a significant increase in specific capacity(96.0 vs.75.1 mAh/g at 0.05 A/g)and better rate capability(61.1 vs.36.1 mAh/g at 5 A/g)in half-cell LICs,along with an 83.5%capacity retention over 7400 cycles within an extended voltage range of 2.0-4.2 V in full-cell LICs.Scalability was demonstrated by a 120 g batch production,enabling fabrication of pouch-type LICs with commercial hard carbon anodes that delivered a higher energy density of 28.3 Wh/kg at 1 C,and a peak power density of 12.1 kW/kg compared to devices using raw AC.This simple,industry-compatible approach may be used for producing ad-vanced cathode materials for practical high-performance LICs.关键词
活性炭/锂离子电容器/表面官能团/微晶结构/高电压正极Key words
Activated carbon/Lithium-ion capacitors/Surface functional groups/Microcrystalline domains/High-voltage cathode分类
化学工程引用本文复制引用
安亚斌,孙宇,张克良,李晨,孙现众,王凯,张熊,马衍伟..定向调控表面官能团和微晶结构制备高电压锂离子电容器用活性炭[J].新型炭材料（中英文）,2025,40(5):1085-1097,13.基金项目
This work was supported by the National Natur-al Science Foundation of China(52377218)and the Youth Innovation Promotion Association,CAS(Y2021052). 国家自然科学基金(52377218) （52377218）
中国科学院青年创新促进会(Y2021052). （Y2021052）
