Kang, Kyung Seok Seong, Min Ji Oh, Si Hyoung Yu, Ji-Sang Yim, Taeeun 2024-01-19T16:04:41Z 2024-01-19T16:04:41Z 2021-09-02 2020-11 0253-2964 https://pubs.kist.re.kr/handle/201004/117906 Combination of poly(vinylidene fluoride) (PVDF) with Ni-rich layered cathode material create artificial cathode-electrolyte interphases by thermal decomposition of PVDF and residual Li(+)species. The pressure of the cell cycled with PVDF-treated cathode materials is markedly decreased, since the thermal treatment with PVDF selectively reduces the amounts of Li(+)species. The cycling performance is improved compared to nontreated Ni-rich layered cathodes because the artificial cathode-electrolyte interphases effectively suppress the electrolyte decomposition as determined by systematic characterization of particle hardness, surface morphology, and electrochemical impedance spectroscopy. Additional high temperature storage tests performed with 3450-dimensioned pouch cells indicate much improved recovery rates, as well as smaller open circuit voltage drops, smaller increases in internal resistance, and less swelling for cells cycled with the PVDF-treated Ni-rich layered cathode than with a nontreated Ni-rich layered cathode. English 대한화학회 Surface-Modified Ni-Rich Layered Oxide Cathode Via Thermal Treatment of Poly(Vinylidene Fluoride) for Lithium-Ion Batteries Article 10.1002/bkcs.12118 1 Bulletin of the Korean Chemical Society, v.41, no.11, pp.1107 - 1113 Bulletin of the Korean Chemical Society 41 11 1107 1113 N scie scopus kci ART002647260 000574765300001 2-s2.0-85092065818 Chemistry, Multidisciplinary Chemistry Article ELECTROCHEMICAL PERFORMANCE ENERGY-DENSITY CALCINATION TEMPERATURE STABILITY IMPROVEMENT ADDITIVES CAPACITY BARRIER STORAGE LIFE Lithium rechargeable battery Cathode Poly(vinylidene fluoride) Interfacial stability Cathode electrolyte interphase