Surface and Interfacial Chemistry in the Nickel‐Rich Cathode Materials. Issue 4 (20th February 2020)

• Record Type: Journal Article
• Authors: Kim, Junhyeok; Cha, Hyungyeon; Lee, Hyomyung; Oh, Pilgun; Cho, Jaephil
• Is Part Of: Batteries & supercaps. Volume 3:Issue 4(2020)
• Page Start: 309
• Page End: 322
• Publication Date: 2020-02-20
• Subjects: nickel-rich cathodes -- interfacial stability -- solid-electrolyte interphase -- electrolyte decompositions -- single crystalline characteristics; Electrochemistry -- Periodicals; Electrodes -- Periodicals; Electric batteries -- Periodicals; 621.31242
• DOI: 10.1002/batt.201900131
• Languages: English
• ISSNs: 2566-6223

Abstract

Abstract: With increasing demands for high energy lithium‐ion batteries, layered nickel‐rich cathode materials have been considered as the most promising candidate due to their high reversible capacity and low cost. Although some of the materials with nickel contents ≦60 % were commercialized, there are tremendous obstacles for further improvement of electrochemical performance, which is strongly related to the unstable cathode surface and interfacial properties. In this regard, a specific review on the interfacial chemistry between the cathode and electrolyte during electrochemical testing is provided. We highlight the underpinning interfacial chemistry and degradation mechanisms of the cathode materials. Finally, light is shed on the recent efforts for enhancing the interfacial stability of the nickel‐rich cathode materials. Abstract : Interfacial chemistry : The interfacial stability of nickel‐rich cathode materials should be considered for the development of high energy lithium‐ion batteries. In this review, complex interfacial chemistry between the nickel‐rich cathodes and electrolyte was summarized. Moreover, a variety of strategies for stabilizing the unstable interface is summarized.