An interactive design for sustainable oxygen capacity in alkali-ion batteries. Issue 11 (7th October 2022)

• Record Type: Journal Article
• Authors: Lee, Jaewoon; Kim, Duho
• Is Part Of: Energy & environmental science. Volume 15:Issue 11(2022)
• Page Start: 4554
• Page End: 4560
• Publication Date: 2022-10-07
• Subjects: Energy conversion -- Periodicals; Fuel switching -- Periodicals; Environmental sciences -- Periodicals; Environmental chemistry -- Periodicals; 333.79
• DOI: 10.1039/d2ee02199d
• Languages: English
• ISSNs: 1754-5692

Abstract

Abstract : This research paper suggests the interactive design frameworks between sodium- and lithium-ion cathodes by mimicking the critical features shown in sodium-ion cathodes to rationally harness the nonhysteretic and reversible oxygen redox. Abstract : Nonhysteretic and reversible (nHR) oxygen redox is desirable for high-energy-density cathodes in lithium-ion batteries (LIBs); however, serious challenges remain. An interactive design concept that mimics the nHR anionic activity of Li-excess Na oxide for sodium-ion batteries is proposed herein to harness the full potential of the oxygen capacity of Li2 MnO3 in LIBs. We investigated the reversible stacking sequence transition induced by layer gliding accompanied by oxygen redox during (de)sodiation in Na-layered oxides, with Li ions at the tetrahedral sites of the charged structure. Intriguingly, the stacking transition in F-doped Li2 MnO3 was identified as a reversible reaction, and the delithiated phase exhibiting no O–O dimers included a consistent Li configuration of the Na cathode. Although in-plane Mn migration resulted in the formation of molecular O2 trapped in the bulk, the detailed electronic structures in the normal delithiation mode exhibited reversible lattice O(2p) activity.