Surface‐modified polyethylene separator with hydrophilic property for enhancing the electrochemical performance of lithium‐ion battery | Zendy

Ahn Yongkeon | Zendy; Kwon Yong Kab | Zendy; Kim Ki Jae | Zendy

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Surface‐modified polyethylene separator with hydrophilic property for enhancing the electrochemical performance of lithium‐ion battery

Author(s) -

Ahn Yongkeon,

Kwon Yong Kab,

Kim Ki Jae

Publication year - 2020

Publication title -

international journal of energy research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.808

H-Index - 95

eISSN - 1099-114X

pISSN - 0363-907X

DOI - 10.1002/er.5401

Subject(s) - separator (oil production) , microporous material , electrochemistry , ammonium persulfate , materials science , electrolyte , chemical engineering , ion , polyethylene , ionic conductivity , conductivity , chemistry , composite material , organic chemistry , electrode , polymer , physics , engineering , polymerization , thermodynamics

Summary The suggested surface treatment using ammonium persulfate (APS) successfully introduces hydrophilic functional groups onto the microporous structure of the polyethylene (PE) separators, leading to a high affinity toward polar liquid electrolytes without degrading the intrinsic physical properties of the separator. This improves the lithium‐ion migration and ionic conductivity of the APS‐treated separator, affording a stable cycle performance (92.5% at 90th cycle) and significantly improved rate capability (87.5% at 3 C).

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