All-solid-state interpenetrating network polymer electrolytes for long cycle life of lithium metal batteries12. Issue 30 (18th July 2018)

• Record Type: Journal Article
• Authors: Tong, Yongfen; Lyu, Hailong; Xu, Yuzhong; Prasad Thapaliya, Bishnu; Li, Peipei; Sun, Xiao-Guang; Dai, Sheng
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 30(2018)
• Page Start: 14847
• Page End: 14855
• Publication Date: 2018-07-18
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta03062f
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : All-solid-state interpenetrating network polymer electrolytes (INSPEs) were fabricated by a simultaneous reaction of 3-armed poly(ethylene glycol) methyl ether methacrylate-co-glycidyl methacrylate and bisphenol A diglycidyl ether (BPDE) with polyether diamine (ED2003) in the presence of LiTFSI, exhibiting high ionic conductivities at room temperature and remarkable stability towards lithium metal. Abstract : 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%. 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.