新型炭材料（中英文）2026，Vol.41Issue(4)：1026-1039,14.DOI:10.1016/S1872-5805(26)61098-0
热退火调节激光辅助制备的石墨烯孔隙率与电容
Tuning porosity and capacitance of laser-assisted grown graphene by controlled thermal annealing
摘要
Abstract
Graphene-like electrodes pro-duced by a laser-assisted method are attract-ive for electrochemical energy storage.However,their performance is strongly af-fected by the pore network created during manufacture,which is difficult to control re-producibly.We have examined how a simple thermal post-treatment modifies the porosity and surface chemistry of these electrodes,and how these changes influence their capacitive performance.Parameters such as the anneal-ing temperature,dwell time,and atmosphere(air versus inert)were varied.Mild annealing in air(up to 500℃)decreased the number of oxygen-containing functionalities and in-creased the sp2/sp3 carbon ratio,while signi-ficantly increasing the specific surface area from 110 to 498 m2 g-1 and broadening the pore-size distribution.These structural and chemical changes correlate with a large increase in capacitance,approaching an order-of-magnitude compared with the un-treated electrodes.The best annealed electrodes produced retained 92%of their capacitance when the current increased by a factor of 25,and had stable long-term cycling with 99%capacitance retention after 10 000 cycles.Because the process is based on laser processing followed by simple thermal annealing,it is compatible with scalable manufacturing and avoids wet-chemic-al activation routes.关键词
激光辅助石墨烯/超级电容器/退火/孔隙结构优化/DFTKey words
Laser-assisted graphene/Supercapacitors/Annealing/Pore structure refinement/DFT分类
化学化工引用本文复制引用
Nikolaos Samartzis,Natalia Kantouni,Elli Bellou,Paraskevas Dimitropoulos,Labrini Sygellou,Athanassios Chrissanthopoulos,Spyros N.Yannopoulos..热退火调节激光辅助制备的石墨烯孔隙率与电容[J].新型炭材料（中英文）,2026,41(4):1026-1039,14.基金项目
European Union,under Horizon Europe Programme GRAPHERGIA(101120832). （101120832）
