Polycationic bimetallic oxide CoGa2O4 with spinel structure: dominated pseudocapacitance, dual-energy storage mechanism, and Li-ion hybrid supercapacitor application
He, Zheng-Hua1; Gao, Jian-Fei1; Kong, Ling-Bin1,2
2019-11-08
发表期刊IONICS
ISSN0947-7047
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
DOI10.1007/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.
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