Enhancing Interfacial Capacitance by Boron Doping in Vertically Porous Carbon Toward High-Performance AC Filtering Electrochemical Capacitors

doi:10.1002/smll.202310523

IMR OpenIR

	Enhancing Interfacial Capacitance by Boron Doping in Vertically Porous Carbon Toward High-Performance AC Filtering Electrochemical Capacitors
	Chen, Bin 1,2; Huang, Nan 1,2; Zhai, Zhaofeng 1; Zhang, Chuyan 1; Liu, Lusheng 1; Yang, Bing 1,2; Jiang, Xin 1,3
通讯作者	Huang, Nan(nhuang@imr.ac.cn) ; Jiang, Xin(xjiang@imr.ac.cn)
	2024-01-31
发表期刊	SMALL
ISSN	1613-6810
页码	10
摘要	Electrochemical capacitors (ECs) show great perspective in alternate current (AC) filtering once they simultaneously reach ultra-fast response and high capacitance density. Nevertheless, the structure-design criteria of the two key properties are often mutually incompatible in electrode construction. Herein, it is proposed that combining vertically oriented porous carbon with enhanced interfacial capacitance (Ci) can efficiently solve this issue. Theoretically, the density function theory calculation shows that the Ci of a carbon electrode can be enhanced by boron doping due to the corresponding compact induced charge layer. Experimentally, the vertical-oriented boron-doped graphene nanowalls (BGNWs) electrodes, whose Ci is enhanced from 4.20 to 10.16 mu F cm-2 upon boron doping, are prepared on a large scale (480 cm2) using a hot-filament chemical vapor deposition technique (HFCVD). Owing to the high Ci and vertically oriented porous structure, BGNWs-based EC has a high capacitance density of 996 mu F cm-2 with a phase angle of - 79.4 degrees at 120 Hz in aqueous electrolyte and a high energy density of 1953 mu FV2 cm-2 in organic electrolyte. As a result, the EC is capable of smoothing 120 Hz ripples for 60 Hz AC filtering. These results provide enlightening insights on designing high-performance ECs for high-frequency applications. A novel electrode design strategy of combining vertically oriented porous carbon with boron-doping-cased high interfacial capacitance (Ci) is proposed to improve the performance of electrochemical capacitors (ECs) at high frequencies. The corresponding EC exhibits a capacitance density of 996 mu F cm-2 with a phase angle of -79.4 degrees at 120 Hz and excellent AC filtering capability. image
关键词	AC filtering boron-doped carbon electrochemical capacitor interfacial capacitance vertical structure
资助者	National Natural Science Foundation of China ; Technical Innovation Project for Functional Development of Instruments and Equipment of the Chinese Academy of Sciences
DOI	10.1002/smll.202310523
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Technical Innovation Project for Functional Development of Instruments and Equipment of the Chinese Academy of Sciences ; [51202257]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001152401700001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184000
专题	中国科学院金属研究所
通讯作者	Huang, Nan; Jiang, Xin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Univ Siegen, Inst Mat Engn, D-57076 Siegen, Germany
推荐引用方式 GB/T 7714	Chen, Bin,Huang, Nan,Zhai, Zhaofeng,et al. Enhancing Interfacial Capacitance by Boron Doping in Vertically Porous Carbon Toward High-Performance AC Filtering Electrochemical Capacitors[J]. SMALL,2024:10.
APA	Chen, Bin.,Huang, Nan.,Zhai, Zhaofeng.,Zhang, Chuyan.,Liu, Lusheng.,...&Jiang, Xin.(2024).Enhancing Interfacial Capacitance by Boron Doping in Vertically Porous Carbon Toward High-Performance AC Filtering Electrochemical Capacitors.SMALL,10.
MLA	Chen, Bin,et al."Enhancing Interfacial Capacitance by Boron Doping in Vertically Porous Carbon Toward High-Performance AC Filtering Electrochemical Capacitors".SMALL (2024):10.