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dc.contributor.authorLiu, Gang
dc.contributor.authorCao, Zhen
dc.contributor.authorZhou, Lin
dc.contributor.authorZhang, Jiao
dc.contributor.authorSun, Qujiang
dc.contributor.authorHwang, Jang Yeon
dc.contributor.authorCavallo, Luigi
dc.contributor.authorWang, Limin
dc.contributor.authorSun, Yang Kook
dc.contributor.authorMing, Jun
dc.date.accessioned2020-12-07T07:21:12Z
dc.date.available2020-12-07T07:21:12Z
dc.date.submitted2020-02-29
dc.identifier.citationLiu, G., Cao, Z., Zhou, L., Zhang, J., Sun, Q., Hwang, J., … Ming, J. (2020). Additives Engineered Nonflammable Electrolyte for Safer Potassium Ion Batteries. Advanced Functional Materials, 30(43), 2001934. doi:10.1002/adfm.202001934
dc.identifier.issn1616-3028
dc.identifier.issn1616-301X
dc.identifier.doi10.1002/adfm.202001934
dc.identifier.urihttp://hdl.handle.net/10754/666295
dc.description.abstractPotassium ion batteries (KIBs) are attracting great attention as an alternative to lithium-ion batteries due to lower cost and better global sustainability of potassium. However, designing electrolytes compatible with the graphite anode and addressing the safety issue of highly active potassium remains challenging. Herein, a new concept of using additives to engineer non-flammable electrolytes for safer KIBs is introduced. It is discovered that the additives, such as the ethylene sulfate (i.e., DTD), can make the electrolyte of 1.0 m potassium bis(fluorosulfonyl) imide in trimethyl phosphate compatible with graphite anode for the first time, without the need of concentrated electrolyte strategies. A new coordination mechanism of additives in the electrolyte is presented. It is shown that the additive can change the K+ solvation structure and then determine the interfacial behaviors of K+-solvent on electrode interface, which are critical to affect the graphite performance (i.e., K+-solvent co-insertion, or K+ (de-)intercalation). Then, an extremely high potassium storage capability is obtained in graphite electrode for potassium (ion) batteries, particularly the presented high-performance graphite|K0.69CrO2 full battery fully demonstrates the practical application of this newly designed electrolyte. This additive-based strategy can offer more opportunities to tune the electrolyte properties and then serve for the more mobile ion battery system.
dc.description.sponsorshipThis work was supported by the National Natural Science Foundation of China (21978281, 21975250) and the National Key R&D Program of China (SQ2017YFE9128100). The authors also thank the Independent Research Project of the State Key Laboratory of Rare Earth Resources Utilization (110005R086), Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. The authors also acknowledge fruitful discussions with the research scientists at Huzhou Kunlun Power Battery Materials Co., Ltd.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/10.1002/adfm.202001934
dc.rightsArchived with thanks to Advanced Functional Materials
dc.titleAdditives Engineered Nonflammable Electrolyte for Safer Potassium Ion Batteries
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentChemical Science Program
dc.identifier.journalAdvanced Functional Materials
dc.rights.embargodate2021-12-07
dc.eprint.versionPost-print
dc.contributor.institutionState Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, CAS, Changchun, 130022, China
dc.contributor.institutionUniversity of Science and Technology of China, Hefei, 230026, China
dc.contributor.institutionDepartment of Energy Engineering, Hanyang University, Seoul, 133-791, Republic of Korea
dc.identifier.volume30
dc.identifier.issue43
dc.identifier.pages2001934
kaust.personCao, Zhen
kaust.personCavallo, Luigi
dc.date.accepted2020-06-30
dc.identifier.eid2-s2.0-85090236440
refterms.dateFOA2020-12-07T08:18:58Z


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