Quasi-Solid-State Rechargeable Li-O-2 Batteries with High Safety and Long Cycle Life at Room Temperature
- Authors
- Cho, Sung Man; Shim, Jimin; Cho, Sung Ho; Kim, Jiwoong; Son, Byung Dae; Lee, Jong-Chan; Yoon, Woo Young
- Issue Date
- 9-5월-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- lithium-oxygen battery; solid polymer electrolyte; quasi-solid-state; palladium-cobalt; lithium powder
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.10, no.18, pp.15634 - 15641
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 10
- Number
- 18
- Start Page
- 15634
- End Page
- 15641
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/75556
- DOI
- 10.1021/acsami.8b00529
- ISSN
- 1944-8244
- Abstract
- As interest in electric vehicles and mass energy storage systems continues to grow, Li-O-2 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-O-2 batteries. Herein, we introduced a quasi-solid polymer electrolyte with excellent electrochemical, chemical, and thermal stabilities into Li-O-2 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-O-2 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-O-2 batteries.
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