A Safe Organic Oxygen Battery Built with Li‐Based Liquid Anode and MOFs Separator. Issue 12 (7th February 2020)

• Record Type: Journal Article
• Authors: Deng, Han; Chang, Zhi; Qiu, Feilong; Qiao, Yu; Yang, Huijun; He, Ping; Zhou, Haoshen
• Is Part Of: Advanced energy materials. Volume 10:Issue 12(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-07
• Subjects: Li‐based liquid anodes -- Li‐O2 batteries -- metal organic frameworks -- redox mediators -- separators -- solid electrolyte interface; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201903953
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: Safe rechargeable batteries of improved energy density and high power performance are urgently needed for the development of large electric devices. Herein, an Li‐based organic liquid anode is proposed, and an organic oxygen battery with a metal organic framework membrane separator is realized, which is able to conduct Li ions and separate other large species in the system. Equipped with the dual redox mediator strategy, the organic oxygen battery exhibits superior rate performance with long cycling life and low overpotential. A "solid electrolyte interface"‐like layer is observed between the organic liquid anode and the ion conducting separator. This work not only introduces a new type of anode for Li‐based batteries, but also provides fundamental insights for the better application of biphenyl‐based liquid anodes. Abstract : A safe Li‐based organic oxygen battery with a high rate performance is built. Beneffiting from the separation effect and the fast Li ion conductivity of a metal organic frameworks MOFs‐based separator, the dual mediators strategy and biphenyl‐Li liquid anode deliver a stable cycling performance at a high current density. A "solid electrolyte interphase"‐like layer is observed for the liquid anode on the separator.