The relationship between the high-frequency performance of supercapacitors and the type of doped nitrogen in the carbon electrode

作     者：FAN Ya-feng YI Zong-lin ZHOU Yi XIE Li-jing SUN Guo-hua WANG Zhen-bing Huang Xian-hong SU Fang-yuan CHEN Cheng-meng 范亚锋;易宗琳;周易;谢莉婧;孙国华;王振兵;黄显虹;苏方远;陈成猛

作者机构：CAS Key Laboratory of Carbon MaterialsInstitute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China University of Chinese Academy of SciencesBeijing 100049China College of Biomedical EngineeringTaiyuan University of TechnologyTaiyuan 030024China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

基　　金：国家重点研发计划(2022YFF0609802,2022YFF0609801) 国家自然科学基金(22179139,21975275) 山西省基础研究计划(20210302123008) 山西省重点研发计划(2021020660301013,202102040201003,202102070301018) 山西省专利转化专项计划(202303009) 

出 版 物：《新型炭材料（中英文）》 (New Carbon Materials)

年 卷 期：2024年第39卷第5期

页      码：1015-1026页

摘      要：Nitrogen doping has been widely used to improve the performance of carbon electrodes in supercapacitors,particularly in terms of their high-frequency ***,the charge storage and electrolyte ion response mechanisms of different nitrogen dopants at high frequencies are still *** this study,melamine foam carbons with different configurations of surfacedoped N were formed by gradient carbonization,and the effects of the configurations on the high-frequency response behavior of the supercapacitors were *** a combination of experiments and first-principle calculations,we found that pyrrolic N,characterized by a higher adsorption energy,increases the charge storage capacity of the electrode at high *** the other hand,graphitic N,with a lower adsorption energy,increases the speed of ion *** propose the use of adsorption energy as a practical descriptor for electrode/electrolyte design in high-frequency applications,offering a more universal approach for improving the performance of N-doped carbon materials in supercapacitors.

主 题 词：High-frequency supercapacitors Carbon electrodes Doped nitrogen species Adsorption energy Descriptor 

学科分类：081702[081702] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1016/S1872-5805(24)60849-8

馆 藏 号：203143536...