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dc.contributor.authorZhang, Weien_US
dc.contributor.authorSun, Xiaolien_US
dc.contributor.authorTang, Yuxinen_US
dc.contributor.authorXia, Huarongen_US
dc.contributor.authorZeng, Yien_US
dc.contributor.authorQiao, Liangen_US
dc.contributor.authorZhu, Zhiqiangen_US
dc.contributor.authorLv, Zhishengen_US
dc.contributor.authorZhang, Yanyanen_US
dc.contributor.authorGe, Xiangen_US
dc.contributor.authorXi, Shiboen_US
dc.contributor.authorWang, Zhiguoen_US
dc.contributor.authorDu, Yonghuaen_US
dc.contributor.authorChen, Xiaodongen_US
dc.identifier.citationZhang, W., Sun, X., Tang, Y., Xia, H., Zeng, Y., Qiao, L., . . . Chen, X. (2019). Lowering charge transfer barrier of LiMn2O4 via nickel surface doping to enhance Li+ intercalation kinetics at subzero temperatures. Journal of the American Chemical Society, 141(36), 14038-14042. doi:10.1021/jacs.9b05531en_US
dc.description.abstractSluggish interfacial kinetics leading to considerable loss of energy and power capabilities at subzero temperatures is still a big challenge to overcome for Li-ion batteries operating under extreme environmental conditions. Herein, using LiMn2O4 as the model system, we demonstrated that nickel surface doping to construct a new interface owning lower charge transfer energy barrier, could effectively facilitate the interfacial process and inhibit the capacity loss with decreased temperature. Detailed investigations on the charge transfer process via electrochemical impedance spectroscopy and density functional theory calculation, indicate that the interfacial chemistry tuning could effectively lower the activation energy of charge transfer process by nearly 20%, endowing the cells with ∼75.4% capacity at −30 °C, far surpassing the hardly discharged unmodified counterpart. This control of surface chemistry to tune interfacial dynamics proposes insights and design ideas for batteries to well survive under thermal extremes.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.relation.ispartofJournal of the American Chemical Societyen_US
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
dc.subjectEngineering::Materials::Energy materialsen_US
dc.titleLowering charge transfer barrier of LiMn2O4 via nickel surface doping to enhance Li+ intercalation kinetics at subzero temperaturesen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science & Engineeringen_US
dc.contributor.organizationInnovative Centre for Flexible Devicesen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsLithium Ion Batteryen_US
dc.subject.keywordsLow Temperatureen_US
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