Ultrasmall Co3O4 Nanoparticles Confined in P, N-Doped Carbon Matrices for High-Performance Supercapacitors

doi:10.1021/acs.jpcc.0c01539

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Ultrasmall Co3O4 Nanoparticles Confined in P, N-Doped Carbon Matrices for High-Performance Supercapacitors
	Yang, Jingdong ; Xu, Xueyan ; Zhou, Xufeng ; Jiang, Shunqiong ; Chen, Wen ; Shi, Siqi ; Wang, Da ; Liu, Zhaoping
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2020
卷号	124 期号:17 页码:9225-9232
关键词	COBALT OXIDE ELECTROCHEMICAL PERFORMANCE SONOCHEMICAL SYNTHESIS COMPOSITE AEROGEL ELECTRODES DESIGN
DOI	10.1021/acs.jpcc.0c01539
英文摘要	Co3O4 nanoparticles with smaller particle size can expose more active sites to react with electrolytes, thereby exhibiting better supercapacitive performance. However, the size of Co3O4 nanoparticles is difficult to be effectively controlled in traditional carbon matrices. Herein, P, N-codoped carbon matrices with ultrahigh surface area and abundant nanocavities are used as a novel host to confine the growth of Co3O4 nanoparticles. The Co3O4/carbon composites with high redox activities of Co3O4 are successfully obtained, in which Co(3)O(4 )nanoparticles are strongly anchored in the carbon matrices, resulting in the enhancement of the composites' capacitive performance (1310 F g(-1) at 0.5 A g(-1)). Meanwhile, the strong anchoring effect of the carbon host on Co(3)O(4 )nanoparticles because of the rich doping elements and the confinement effect of the nanocavities ensure long-term stability (92% capacitance retention after 5000 cycles). Furthermore, the assembled asymmetric supercapacitor using this composite as the cathode material and activated carbon as the anode material delivers a high energy density of 47.18 W h kg(-1) at 375 W kg(-1).
学科主题	Chemistry ; Science & Technology - Other Topics ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19747]
专题	2020专题
作者单位	1.Liu, ZP (corresponding author), Chinese Acad Sci, NIMTE, Adv Li Ion Battery Engn Lab, Ningbo 315201, Peoples R China. 2.Zhou, XF 3.Liu, ZP (corresponding author), Chinese Acad Sci, NIMTE, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Peoples R China. 4.Wang, D (corresponding author), Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China.
推荐引用方式 GB/T 7714	Yang, Jingdong,Xu, Xueyan,Zhou, Xufeng,et al. Ultrasmall Co3O4 Nanoparticles Confined in P, N-Doped Carbon Matrices for High-Performance Supercapacitors[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2020,124(17):9225-9232.
APA	Yang, Jingdong.,Xu, Xueyan.,Zhou, Xufeng.,Jiang, Shunqiong.,Chen, Wen.,...&Liu, Zhaoping.(2020).Ultrasmall Co3O4 Nanoparticles Confined in P, N-Doped Carbon Matrices for High-Performance Supercapacitors.JOURNAL OF PHYSICAL CHEMISTRY C,124(17),9225-9232.
MLA	Yang, Jingdong,et al."Ultrasmall Co3O4 Nanoparticles Confined in P, N-Doped Carbon Matrices for High-Performance Supercapacitors".JOURNAL OF PHYSICAL CHEMISTRY C 124.17(2020):9225-9232.