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Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances
Xing, Chunxian1; Li, Bosen1,2; Zhang, Jiahe1; Su, Peipei1,2; Pan, Shanshan1,2; Cao, Yong3; Gao, Erping3; Zhang, Haitao1,2
2021-11-01
Source PublicationMATERIALS CHEMISTRY AND PHYSICS
ISSN0254-0584
Volume272Pages:7
AbstractHard carbon is hard to be commercialized due to its low initial efficiency. The irreversible capacity loss usually consumes numerous lithium ions from the electrolyte, leading to an unexpected energy density attenuation. Therefore, effective pre-lithiation methods are extremely desired. Herein, a striking and simple pre-lithiated method was proposed through introducing lithium metal passivation powder into ionogel electrolyte as lithium source. Safety features and electrochemical performances of as prepared ionogel electrolyte were studied systemically. Notably, our work found that the incorporation of lithium metal powder could effectively improve the ionic conductivity, reduce the reactive activation energy, and supplement the lithium-ion loss of electrolyte. The pre-lithiated electrolyte could stand an ultra-high operating potential window of 4.2 V in lithium-ion capacitors. Moreover, our study reveals that the dissociation of the ionic clusters within the ionogel electrolyte favors the electrochemical performances at high temperature. Our optimized device delivered a maximum energy density of 138 Wh kg-1 and a maximum power density of 19339.4 W kg-1 at 60 degrees C. This simple prelithiation method will significantly benefit the rational fabrication of lithium-ion capacitors with high energy density and reasonable safety.
KeywordPre-lithiation Ionogel electrolyte Lithium-ion capacitors Safety Ionic liquid
DOI10.1016/j.matchemphys.2021.124975
Language英语
WOS KeywordLITHIUM-ION CAPACITORS ; POLYMER ELECTROLYTE ; HARD CARBON ; NEGATIVE ELECTRODE ; ANODE MATERIALS ; GRAPHITE ANODE ; LIQUID ; COMPOSITE ; BATTERIES ; ENERGY
Funding ProjectNational Key Research and Development Program of China[2016YFB0100304] ; National Natural Science Foundation of China[21878308]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China
WOS IDWOS:000682345400003
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49612
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Haitao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Hefei Got High Tech Power Energy Co Ltd, 599 Daihe Rd, Hefei, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Xing, Chunxian,Li, Bosen,Zhang, Jiahe,et al. Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances[J]. MATERIALS CHEMISTRY AND PHYSICS,2021,272:7.
APA Xing, Chunxian.,Li, Bosen.,Zhang, Jiahe.,Su, Peipei.,Pan, Shanshan.,...&Zhang, Haitao.(2021).Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances.MATERIALS CHEMISTRY AND PHYSICS,272,7.
MLA Xing, Chunxian,et al."Rational design of a pre-lithiated ionogel membrane with enhanced safety and electrochemical performances".MATERIALS CHEMISTRY AND PHYSICS 272(2021):7.
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