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
Source PublicationIONICS
ISSN0947-7047
Volume26Issue:3Pages:1379-1388
AbstractIn 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)).
KeywordDual-energy storage mechanism Polycationic bimetallic oxide Dominated pseudocapacitance High electrical conductivity Lithium-ion hybrid supercapacitor
DOI10.1007/s11581-019-03249-1
Indexed BySCI ; SCIE
Language英语
Funding ProjectNational Natural Science Foundation of China[51762031][51971104]
WOS Research AreaChemistry ; Electrochemistry ; Physics
WOS SubjectChemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS IDWOS:000495061200002
PublisherSPRINGER HEIDELBERG
EI Accession Number20194607688835
EI KeywordsCobalt alloys
EI Classification Number525.7 Energy Storage - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 694.4 Storage
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lut.edu.cn/handle/2XXMBERH/64217
Collection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
Corresponding AuthorKong, Ling-Bin
Affiliation1.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
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials;  Coll Mat Sci & Engn
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
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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