Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application

doi:10.1007/s11581-019-03249-1

	Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application
	He, Zheng-Hua 1; Gao, Jian-Fei 1; Kong, Ling-Bin1,2
	2019-11-08
发表期刊	IONICS
ISSN	0947-7047
卷号	26 期号:3 页码:1379-1388
摘要	In this work, the polycationic bimetallic oxide CoGa2O4 with spinel structure was successfully prepared by simple hydrothermal and subsequent calcination methods. Following, half-cell electrochemical test showed that this material presented a hybrid energy storage mechanism, namely combining Ga alloying and Co3O4 conversion. The combination of the two energy story mechanisms makes CoGa2O4 have higher conductivity than other single metal oxides. According to the calculation of the relationship between peak current and sweep speed, the b = 0.93 of CoGa2O4 is obtained, and its electrochemical behavior is closer to capacitive behavior than that of Co3O4 and NiCo2O4. This makes it have excellent rate performance and cycle stability. Consequently, the CoGa2O4//AC Li-ion hybrid supercapacitor (LIHSC) device exhibits excellent cycling stability (capacity retention of 83% after 8000 cycles), high-energy density of 111.5 Wh kg(-1) (at 100 W kg(-1)), and high power density of 3927 W kg(-1) (at 24 Wh kg(-1)).
关键词	Dual-energy storage mechanism Polycationic bimetallic oxide Dominated pseudocapacitance High electrical conductivity Lithium-ion hybrid supercapacitor
DOI	10.1007/s11581-019-03249-1
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[51762031][51971104]
WOS研究方向	Chemistry ; Electrochemistry ; Physics
WOS类目	Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号	WOS:000495061200002
出版者	SPRINGER HEIDELBERG
EI入藏号	20194607688835
EI主题词	Cobalt alloys
EI分类号	525.7 Energy Storage - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 694.4 Storage
引用统计	被引频次：16[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/64217
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Kong, Ling-Bin
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 材料科学与工程学院
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	He, Zheng-Hua,Gao, Jian-Fei,Kong, Ling-Bin. Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application[J]. IONICS,2019,26(3):1379-1388.
APA	He, Zheng-Hua,Gao, Jian-Fei,&Kong, Ling-Bin.(2019).Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application.IONICS,26(3),1379-1388.
MLA	He, Zheng-Hua,et al."Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application".IONICS 26.3(2019):1379-1388.