新型炭材料（中英文）2024，Vol.39Issue(6)：1144-1156,13.DOI:10.1016/S1872-5805(24)60892-9
富缺陷N/O共掺杂多孔炭框架材料作为高性能钾、钠离子电池负极材料
Defect-rich N/O-co-doped porous carbon frameworks as anodes for superior potassium and sodium-ion batteries
摘要
Abstract
Carbon with its high electrical conductivity,excellent chemical stability,and structure ability is the most promising an-ode material for sodium and potassium ion batteries.We developed a defect-rich porous carbon framework(DRPCF)built with N/O-co-doped mesoporous nanosheets and containing many defects using porous g-C3N4(PCN)and dopamine(DA)as raw materials.We prepared samples with PCN/DA mass ratios of 1/1,2/1 and 3/1 and found that the one with a mass ratio of 2/1 and a carbonization temperature of 700 ℃ in an Ar atmosphere(DRPCF-2/1-700),had a large specific surface area with an enormous pore volume and a large number of N/O heteroatom active defect sites.Because of this,it had the best pseudocapacitive sodium and potassium ion stor-age performance.A half battery of Na//DRPCF-2/1-700 maintained a capacity of 328.2 mAh g-1 after being cycled at 1 A g-1 for 900 cycles,and a half battery of K//DRPC-2/1-700 maintained a capacity of 321.5 mAh g-1 after being cycled at 1 A g-1 for 1200 cycles.The rate capability and cycling stability achieved by DRPCF-2/1-700 outperforms most reported carbon materials.Finally,ex-situ Raman spectroscopy analysis result confirms that the filling and removing of K+and Na+from the electrochemically active defects are responsible for the high capacity,superior rate and cycling performance of the DRPCF-2/1-700 sample.关键词
富缺陷多孔炭/氮/氧共掺杂/负极材料/钠离子电池/钾离子电池Key words
Defect-rich porous carbon/N/O-co-doping/Anode materials/Sodium ion batteries/Potassium ion batteries分类
化学化工引用本文复制引用
柏玲,刘乾,洪涛,李浩然,朱方圆,刘海岗,李子全,黄镇东..富缺陷N/O共掺杂多孔炭框架材料作为高性能钾、钠离子电池负极材料[J].新型炭材料（中英文）,2024,39(6):1144-1156,13.基金项目
This work was conducted under the auspices of Jiangsu Province Carbon Peak and Neutrality Innova-tion Program(Industry tackling on prospect and key technology)(BE2022002-4),the National Natural Sci-ence Foundation of China(52277219,61974072),Fund of NJUPT(NY221089,NY220195,NY219110). 江苏省碳达峰碳中和科技创新专项资金——产业前瞻与关键核心技术攻关项目(BE2022002-4) （Industry tackling on prospect and key technology）
国家自然科学基金面上项目(61974072,52277219) （61974072,52277219）
南京邮电大学基金(NY221089,NY220195,NY219110). （NY221089,NY220195,NY219110）
