A metal-organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors

doi:10.1039/d0ta04912c

IR > 石油化工学院

	A metal-organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors
	Li, Hongxia1,2,3 ; Chen, Jiangtao 1; Zhang, Li 1; Wang, Kunjie3 ; Zhang, Xu 1; Yang, Bingjun 1,2; Liu, Lingyang 1,2; Liu, Weisheng 4; Yan, Xingbin 1,2,5
	2020-08-28
发表期刊	Journal of Materials Chemistry A
ISSN	20507488
卷号	8 期号:32 页码:16302-16311
摘要	For the emerging potassium-ion energy storage technology, the major challenge is seeking suitable electrode materials with a robust structure and fast kinetics for the reversible insertion/desertion of potassium ions. Here, a pseudocapacitive core-shell heterostructure of titanium oxide/carbon confined into N, P, and S co-doped carbon (TiO2/C@NPSC) is obtained by pyrolyzing a metal-organic framework (MOF) precursor of MIL-125 (Ti) modified by poly(cyclotriphosphazene-co-4,4′-sulfonyldiphenol) polymer. The distinctive structure of TiO2/C@NPSC can effectively buffer the volume variation of TiO2 nano-grains during the charge/discharge process, increase the electron/charge transfer, provide abundant active sites, and boost the pseudocapacitive-dominated K+-storage. Consequently, the TiO2/C@NPSC anode displays superior cyclability and fast kinetics behavior. Upon integrating it with a high capacitance activated carbon cathode derived from another MOF precursor, the as-built potassium-ion hybrid capacitor achieves a high-energy density of 114 W h kg-1 and a power output of 21 kW kg-1. Moreover, in a wide working potential window of 0-4.2 V, the device also maintains over 91.6% of its initial capacity after 10 000 cycles, showing a superior cycle stability. Our results are conducive to understanding the importance of anode-engineering for designing advanced PIHCs. This journal is © The Royal Society of Chemistry.
关键词	Anodes Buffer storage Cathodes Energy storage Ions Metal-Organic Frameworks Organometallics Oxide minerals Potassium Sulfur compounds Supercapacitor Titanium dioxideCore-shell heterostructure Cyclotriphosphazenes Electrode material High energy densities Potential windows Pseudocapacitive Reversible insertion Volume variation
DOI	10.1039/d0ta04912c
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000561168500015
出版者	Royal Society of Chemistry
EI入藏号	20204409440546
EI主题词	Nitrogen compounds
EI分类号	482.2 Minerals - 525.7 Energy Storage - 549.1 Alkali Metals - 714.1 Electron Tubes - 722.1 Data Storage, Equipment and Techniques - 804.1 Organic Compounds - 804.2 Inorganic Compounds
来源库	Compendex
分类代码	482.2 Minerals - 525.7 Energy Storage - 549.1 Alkali Metals - 714.1 Electron Tubes - 722.1 Data Storage, Equipment and Techniques - 804.1 Organic Compounds - 804.2 Inorganic Compounds
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/132384
专题	石油化工学院
通讯作者	Yan, Xingbin
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou 730050, Peoples R China; 4.Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China; 5.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian 116000, Peoples R China
第一作者单位	能源与动力工程学院; 兰州理工大学
通讯作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Li, Hongxia,Chen, Jiangtao,Zhang, Li,et al. A metal-organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors[J]. Journal of Materials Chemistry A,2020,8(32):16302-16311.
APA	Li, Hongxia.,Chen, Jiangtao.,Zhang, Li.,Wang, Kunjie.,Zhang, Xu.,...&Yan, Xingbin.(2020).A metal-organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors.Journal of Materials Chemistry A,8(32),16302-16311.
MLA	Li, Hongxia,et al."A metal-organic framework-derived pseudocapacitive titanium oxide/carbon core/shell heterostructure for high performance potassium ion hybrid capacitors".Journal of Materials Chemistry A 8.32(2020):16302-16311.