Quasi-Solid-State Rechargeable Li-O2 Batteries with High Safety and Long Cycle Life at Room Temperature

Sung Man Cho, Jimin Shim, Sung Ho Cho, Jiwoong Kim, Byung Dae Son, Jong Chan Lee, Wooyoung Yoon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

As interest in electric vehicles and mass energy storage systems continues to grow, Li-O2 batteries are attracting much attention as a candidate for next-generation energy storage systems owing to their high energy density. However, safety problems related to the use of lithium metal anodes have hampered the commercialization of Li-O2 batteries. Herein, we introduced a quasi-solid polymer electrolyte with excellent electrochemical, chemical, and thermal stabilities into Li-O2 batteries. The ion-conducting QSPE was prepared by gelling a polymer network matrix consisting of poly(ethylene glycol) methyl ether methacrylate, methacrylated tannic acid, lithium trifluoromethanesulfonate, and nanofumed silica with a small amount of liquid electrolyte. The quasi-solid-state Li-O2 cell consisted of a lithium powder anode, a quasi-solid polymer electrolyte, and a Pd3Co/multiwalled carbon nanotube cathode, which enhanced the electrochemical performance of the cell. This cell, which exhibited improved safety owing to the suppression of lithium dendrite growth, achieved a lifetime of 125 cycles at room temperature. These results show that the introduction of a quasi-solid electrolyte is a potentially new alternative for the commercialization of solid-state Li-O2 batteries.

Original languageEnglish
Pages (from-to)15634-15641
Number of pages8
JournalACS Applied Materials and Interfaces
Volume10
Issue number18
DOIs
Publication statusPublished - 2018 May 9

Fingerprint

Lithium
Life cycle
Electrolytes
Polymers
Energy storage
Anodes
Methyl Ethers
Temperature
Methacrylates
Multiwalled carbon nanotubes (MWCN)
Tannins
Chemical stability
Solid electrolytes
Electric vehicles
Silicon Dioxide
Powders
Polyethylene glycols
Ethers
Cathodes
Thermodynamic stability

Keywords

  • lithium powder
  • lithium-oxygen battery
  • palladium-cobalt
  • quasi-solid-state
  • solid polymer electrolyte

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Quasi-Solid-State Rechargeable Li-O2 Batteries with High Safety and Long Cycle Life at Room Temperature. / Cho, Sung Man; Shim, Jimin; Cho, Sung Ho; Kim, Jiwoong; Son, Byung Dae; Lee, Jong Chan; Yoon, Wooyoung.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 18, 09.05.2018, p. 15634-15641.

Research output: Contribution to journalArticle

Cho, Sung Man ; Shim, Jimin ; Cho, Sung Ho ; Kim, Jiwoong ; Son, Byung Dae ; Lee, Jong Chan ; Yoon, Wooyoung. / Quasi-Solid-State Rechargeable Li-O2 Batteries with High Safety and Long Cycle Life at Room Temperature. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 18. pp. 15634-15641.
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