Experimental Confirmation of C-Rate Dependent Minima Shifts in Arrhenius Plots of Li-Ion Battery Aging | Zendy

Maral Bozorgchenani | Zendy; Gints Kučinskis | Zendy; Margret WohlfahrtMehrens | Zendy; Thomas Waldmann | Zendy

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Experimental Confirmation of C-Rate Dependent Minima Shifts in Arrhenius Plots of Li-Ion Battery Aging

Author(s) -

Maral Bozorgchenani,

Gints Kučinskis,

Margret WohlfahrtMehrens,

Thomas Waldmann

Publication year - 2022

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/ac580d

Subject(s) - arrhenius plot , arrhenius equation , battery (electricity) , activation energy , anode , ion , coating , materials science , chemistry , analytical chemistry (journal) , thermodynamics , composite material , electrode , physics , chromatography , power (physics) , organic chemistry

Li-ion batteries show a minimum of their aging rate at a certain temperature. This minimum in the corresponding Arrhenius plot expresses the longest cycle life at a certain C-rate. By characterizing aging of laboratory-made pouch cells and commercial 21700 cells as a function of C-rate and ambient temperature, we confirm that this minimum indeed shifts with the charging C-rate. Increasing C-rates lead to higher optimal ambient temperatures with respect to the aging rate. The differences between both cell types are discussed regarding the specific energy and anode coating thickness of the tested cells.

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