TY - JOUR
T1 - Quasi-Solid-State Rechargeable Li-O2 Batteries with High Safety and Long Cycle Life at Room Temperature
AU - Cho, Sung Man
AU - Shim, Jimin
AU - Cho, Sung Ho
AU - Kim, Jiwoong
AU - Son, Byung Dae
AU - Lee, Jong Chan
AU - Yoon, Woo Young
N1 - Funding Information:
This study was supported by a grant from the National Research Foundation of Korea (NRF), funded by the Korean government (MEST) (grant 2016R1A2B3009481). The SEM observations of the sample microstructures were performed with equipment located at the Korea Basic Science Institute, Seoul Center.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/5/9
Y1 - 2018/5/9
N2 - 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.
AB - 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.
KW - lithium powder
KW - lithium-oxygen battery
KW - palladium-cobalt
KW - quasi-solid-state
KW - solid polymer electrolyte
UR - http://www.scopus.com/inward/record.url?scp=85046639718&partnerID=8YFLogxK
U2 - 10.1021/acsami.8b00529
DO - 10.1021/acsami.8b00529
M3 - Article
C2 - 29687989
AN - SCOPUS:85046639718
SN - 1944-8244
VL - 10
SP - 15634
EP - 15641
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 18
ER -