Show simple item record

dc.contributor.authorZhang, Jiao
dc.contributor.authorCao, Zhen
dc.contributor.authorZhou, Lin
dc.contributor.authorPark, Geon-Tae
dc.contributor.authorCavallo, Luigi
dc.contributor.authorWang, Limin
dc.contributor.authorAlshareef, Husam N.
dc.contributor.authorSun, Yang-Kook
dc.contributor.authorMing, Jun
dc.date.accessioned2020-09-13T11:27:39Z
dc.date.available2020-09-13T11:27:39Z
dc.date.issued2020-09-04
dc.identifier.citationZhang, J., Cao, Z., Zhou, L., Park, G.-T., Cavallo, L., Wang, L., … Ming, J. (2020). Model-based Design of Stable Electrolytes for Potassium Ion Batteries. ACS Energy Letters. doi:10.1021/acsenergylett.0c01634
dc.identifier.issn2380-8195
dc.identifier.issn2380-8195
dc.identifier.doi10.1021/acsenergylett.0c01634
dc.identifier.urihttp://hdl.handle.net/10754/665082
dc.description.abstractRechargeable potassium (ion) batteries (KIBs) are an emerging energy storage system with many potential advantages over existing battery systems (e.g., Li-ion, Na-ion battery). However, the electrolyte design for KIBs remains challenging because of serious electrolyte decomposition. Particularly, this problem is aggravated when using metal potassium anodes. Herein, we report that the cation-solvent (i.e., K+-solvent) solvation structure which is determined by the electrolyte composition plays a dominant role in the failure of KIBs. We present an analysis of the reaction pathway to understand the behavior of the cation-solvent structure at the surface of metal electrodes (e.g., metal plating or M+-solvent decomposition). The electronegativity change of cation-solvent structure was studied and correlated to the stability of the electrolytes. We find that the electrolyte decomposition can be induced when the K+ -solvent structure accepts one electron from the electrode; however, this process can be suppressed by tuning the electronegativity through varying the solvent chemistry, anions type, and salt concentrations. Our results explain the high stability of existing high-concentration electrolytes, and present a general guideline to design stable electrolytes for KIBs. This approach can pave the way for the realization of high-performance K-ion batteries.
dc.description.sponsorshipThis work is supported by the National Natural Science Foundation of China (21978281, 21975250) and National Key R&D Program of China (2017YFE0198100). 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 research reported in this publication was partially supported by King Abdullah University of Science and Technology (KAUST) and Hanyang University. The calculations were performed on the KAUST supercomputers.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acsenergylett.0c01634
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Energy Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsenergylett.0c01634.
dc.titleModel-based Design of Stable Electrolytes for Potassium Ion Batteries
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Energy Letters
dc.rights.embargodate2021-09-04
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, P. R. China.
dc.contributor.institutionDepartment of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
kaust.personCao, Zhen
kaust.personCavallo, Luigi
kaust.personAlshareef, Husam N.
refterms.dateFOA2020-09-13T11:29:08Z
kaust.acknowledged.supportUnitKAUST supercomputers
dc.date.published-online2020-09-04
dc.date.published-print2020-10-09


Files in this item

Thumbnail
Name:
Model_Model based.pdf
Size:
2.626Mb
Format:
PDF
Description:
Accepted Article

This item appears in the following Collection(s)

Show simple item record