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Nitrogen-doped black titania for high performance supercapacitors
Yang, CY; Wang, X; Dong, WJ; Chen, IW; Wang, Z; Xu, JJ; Lin, TQ; Gu, H; Huang, FQ
2020-07-01
Source PublicationSCIENCE CHINA-MATERIALS
ISSN2095-8226
Issue7Pages:1227
SubtypeArticle
AbstractFor energy storage system, it is still a huge challenge to achieve high energy density and high power density simultaneously. One potential solution is to fabricate electrochemical capacitors (ECs), which store electric energy through surface ion adsorption or redox reactions. Here we report a new electrode material, heavy nitrogen-doped (9.29 at.%) black titania (TiO2-x:N). This unique hybrid material, consisting of conductive amorphous shells supported on nanocrystalline cores, has rapid N-mediated redox reaction (TiO2-xNy + zH(+) + ze(-) <-> TiO2-xNyHz), especially in acidic solutions, providing a specific capacitance of 750 F g(-1) at 2 mV s(-1) (707 F g(-1) at 1 A g(-1)), great rate capability (503 F g(-1) at 20 A g(-1)), and maintain stable after initial fading. Being a new developed supercapacitor material, nitrogen-doped black titania may revive the oxide-based supercapacitors.
DOI10.1007/s40843-020-1303-4
WOS KeywordTIO2 NANOTUBE ARRAYS ; THIN-FILM ; ENERGY ; CARBON ; CAPACITANCE ; POWER ; NANOCRYSTALS ; ABSORPTION ; ELECTRODES ; GRAPHENE
Language英语
WOS Research AreaMaterials Science
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28126
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Yang, CY,Wang, X,Dong, WJ,et al. Nitrogen-doped black titania for high performance supercapacitors[J]. SCIENCE CHINA-MATERIALS,2020(7):1227.
APA Yang, CY.,Wang, X.,Dong, WJ.,Chen, IW.,Wang, Z.,...&Huang, FQ.(2020).Nitrogen-doped black titania for high performance supercapacitors.SCIENCE CHINA-MATERIALS(7),1227.
MLA Yang, CY,et al."Nitrogen-doped black titania for high performance supercapacitors".SCIENCE CHINA-MATERIALS .7(2020):1227.
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