All-solid-state interpenetrating network polymer electrolytes for long cycle life of lithium metal batteries

Tong, Yongfen; Lyu, Hailong; Xu, Yuzhong; Prasad Thapaliya, Bishnu; Li, Peipei; Sun, Xiao-Guang; Dai, Sheng

doi:10.1039/C8TA03062F

Title: All-solid-state interpenetrating network polymer electrolytes for long cycle life of lithium metal batteries

Journal Article · 02 July 2018 · Journal of Materials Chemistry. A

DOI: https://doi.org/10.1039/C8TA03062F · OSTI ID:1462867

Tong, Yongfen ^[1]; Lyu, Hailong ^[2]; Xu, Yuzhong ^[3]; Prasad Thapaliya, Bishnu ^[4]; Li, Peipei ^[2];

^[2];

^[4]

Nanchang Hangkong Univ., Nanchang (China). School of Environmental and Chemical Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division
Nanchang Hangkong Univ., Nanchang (China). School of Environmental and Chemical Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Science Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry

A star-shape polymer of 3-armed poly(ethylene glycol) methyl ether methacrylate-co-glycidyl methacrylate copolymer (3PPEGM-co-GMA) was synthesized using an atom transfer radical polymerization (ATRP) technique. All-solid-state interpenetrating network polymer electrolytes (INSPEs) were fabricated by simultaneous reaction of 3PPEGM-co-GMA and bisphenol A diglycidyl ether (BPDE) with polyetherdiamine (ED2003) in the presence of lithium bis(trifluoromethane) sulfonamide (LiTFSI). The INSPEs exhibited ionic conductivities higher than 10^-5 S cm^-1 at room temperature, a high oxidation stability of 4.5 vs. Li/Li⁺ and remarkable stability towards lithium metal. Li metal batteries with LiFePO₄ as the cathode and INSPEs as the electrolyte cycled at a current rate of 0.1C at 60 °C showed a high initial discharge capacity of 156.2 mA h g^-1 and a stable cycling performance over 200 cycles with a high coulombic efficiency of 99%. In conclusion, the results demonstrate that the interpenetrating network polymer electrolytes are promising electrolytes for next generation lithium-based batteries with high ionic conductivity, improved safety, and stable electrochemical performance.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1462867

Alternate ID(s):: OSTI ID: 1460879

Journal Information:: Journal of Materials Chemistry. A, Vol. 6, Issue 30; ISSN 2050-7488

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 40 works

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