新型炭材料（中英文）2024，Vol.39Issue(5)：1015-1026,12.DOI:10.1016/S1872-5805(24)60849-8
氮掺杂构型对超级电容器高频响应的影响机制
The relationship between the high-frequency performance of supercapacitors and the type of doped nitrogen in the carbon electrode
摘要
Abstract
Nitrogen doping has been widely used to improve the performance of carbon electrodes in supercapacitors,particu-larly in terms of their high-frequency response.However,the charge storage and electrolyte ion response mechanisms of different ni-trogen dopants at high frequencies are still unclear.In this study,melamine foam carbons with different configurations of surface-doped N were formed by gradient carbonization,and the effects of the configurations on the high-frequency response behavior of the supercapacitors were analyzed.Using a combination of experiments and first-principle calculations,we found that pyrrolic N,charac-terized by a higher adsorption energy,increases the charge storage capacity of the electrode at high frequencies.On the other hand,graphitic N,with a lower adsorption energy,increases the speed of ion response.We propose the use of adsorption energy as a prac-tical 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.关键词
高频超级电容器/炭电极/氮构型/吸附能/描述符Key words
High-frequency supercapacitors/Carbon electrodes/Doped nitrogen species/Adsorption energy/Descriptor分类
化学化工引用本文复制引用
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..氮掺杂构型对超级电容器高频响应的影响机制[J].新型炭材料（中英文）,2024,39(5):1015-1026,12.基金项目
This work gratefully acknowledges the support of the National Key Research and Development(R&D)Program of China(2022YFF0609802,2022YFF0609801),National Natural Science Founda-tion of China(22179139,21975275),Fundamental Research Program of Shanxi Province(20210302123008),Key Research and Development(R&D)Projects of Shanxi Province(2021020660301013,202102040201003,202102070301018)and Patent Transformation Spe-cial Plan Project of Shanxi Province(202303009). 国家重点研发计划(2022YFF0609802,2022YFF0609801) （R&D）
国家自然科学基金(22179139,21975275) （22179139,21975275）
山西省基础研究计划(20210302123008) （20210302123008）
山西省重点研发计划(2021020660301013,202102040201003,202102070301018) （2021020660301013,202102040201003,202102070301018）
山西省专利转化专项计划(202303009). （202303009）
