新型炭材料（中英文）2025，Vol.40Issue(6)：1265-1278,14.DOI:10.1016/S1872-5805(25)61028-6
一种具有优异电容多孔炭的快速制备方法
The rapid preparation of porous carbon with an improved capacitance
摘要
Abstract
The typical method for preparing the porous carbon used in supercapacitors(SCs)is time-consuming and energy-intensive.We report a fast and efficient route to synthesize and tailor the struc-ture of porous carbon by a Joule heating technique(JHT)using phenolic resin and precursors.During the JHT process,the time and energy needed are both significantly reduced because the precursor is heated to the target temperature at a rate of 1100 K/s,so the por-ous carbon is formed with the release of small molecules and the etching of the substrate by K2CO3.JHT has a higher energy effi-ciency than traditional carbonization methods in a tube furnace and allows for precise control of the pyrolysis process,thus achieving better control of the material's structure and properties.Samples obtained by JHT contain abundant pores and a large specific surface area(1652.7 m2/g),which give an excellent specific capacitance of 476.0 F/g and rate capability(75.1%capacitance re-tention at 64.0 A/g in an aqueous alkaline electrolyte).Furthermore,in electrolytes of 17.0 mol/kg NaClO4(water-in-salt)and 1.0 mol/L TEABF4/AN,the symmetric SCs have a maximum energy density of 33.3 and 50.8 Wh/kg at power densities of 220.4 and 376.4 W/kg,respectively.The cells also have good long-term stability,with a nearly 100%Coulombic efficiency,and a capacitance retention of 93.1%in a water-in-salt electrolyte after 10000 cycles,and 88.9%in an organic electrolyte after 8000 cycles.This study shows that JHT has the potential to serve as an ultra-fast method to prepare porous carbons for energy storage.关键词
超快制备/多孔炭/结构调整/焦耳加热法/能量储存Key words
Ultra-fast preparation/Porous carbon/Structure tailoring/Joule heating method/Energy storage分类
化学化工引用本文复制引用
JIA Ya-jun,HAN Gao-yi,HAN Zi-yue,LIU Hui-chao,CHANG Yun-zhen,ZHU Sheng,HOU Wen-jing,LIU Shu-jie,ZHANG Ying,ZHANG Jin-jiao..一种具有优异电容多孔炭的快速制备方法[J].新型炭材料（中英文）,2025,40(6):1265-1278,14.基金项目
The authors thank the National Natural Science Foundation of China(U21A6004,U21A20172,52402284,52403041 and U1510121),the Science and Technology Major Project of Shanxi(20210103020 1022),Fundamental Research Program of Shanxi Province(202203021221007,202103021223019,202403021222021,20210302124034),and the Open Fund of the Key Lab of Organic Optoelectronics&Molecular Engineering. 国家自然科学基金(U21A6004,U21A20172,52402284,52403041,U1510121) （U21A6004,U21A20172,52402284,52403041 and U1510121）
山西省科技重大专项(202101030201022) （202101030201022）
山西省基础研究计划(202203021221007,202103021223019,202403021222021,20210302124034) （202203021221007,202103021223019,202403021222021,20210302124034）
有机光电子学与分子工程重点实验室开放基金. （）
