[논문]Comparative electrochemical property of solvent-free ceramic/polymer hybrid electrolytes incorporating sol-gel prepared Li-phosphates, Li(Al,Ge)(PO4)3 and Li(Al,Ti)(PO4)3

Park, Hyemin; Choi, Seul ki; Lee, Eun Gyu; Wu, Mihye; Huu, Ha Tran; Kang, Yongku; Kim, Do Youb; Im, Won Bin; Choi, Sungho

doi:10.1016/j.jallcom.2020.155878

[해외논문] Comparative electrochemical property of solvent-free ceramic/polymer hybrid electrolytes incorporating sol-gel prepared Li-phosphates, Li(Al,Ge)(PO4)3 and Li(Al,Ti)(PO4)3

Journal of alloys and compounds, v.843, 2020년, pp.155878 -

Park, Hyemin (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Choi, Seul ki (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Lee, Eun Gyu (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Wu, Mihye (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Huu, Ha Tran (Division of Materials Science and Engineering, Hanyang University) , Kang, Yongku (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Kim, Do Youb (Advanced Materials Division, Korea Research Institute of Chemical Technology) , Im, Won Bin (Division of Materials Science and Engineering, Hanyang University) , Choi, Sungho (Advanced Materials Division, Korea Research Institute of Chemical Technology Republic)

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Abstract Solvent-free ceramic/polymer hybrid electrolytes integrating two different ceramic electrolytes, Ge4+ or Ti4+ phosphates, are prepared and their electrochemical behavior is analyzed for both lithium-ion and lithium-air batteries (LIB and LAB). Li(Al, Ge)2(PO4)3 can be a more effective lithium conducting phosphate composition for a hybrid electrolyte that delivers an enhanced ionic conductivity (∼0.364 mS cm−1 at 30 °C), high discharge capacity and stable cycle retention. The enhanced electrochemical behavior is likely due to the densely packed grain boundary structure between inorganic particles and suppression of lithium reduction with the help of Ge4+. The proposed compositional design of a solvent-free hybrid electrolyte will be a competitive one, which possessed a stable electrochemical behavior both in conventional LIBs and in LABs without any interfacial control during the cell assembly i.e., soaking liquid electrolytes and/or additional interlayer components. Highlights Solvent-free hybrid electrolyte composed of phosphates and poly(ethylene oxide). Comparative analysis for the Ge4+ and Ti4+-based phosphates hybrid electrolytes. Flexible and air stable Li batteries assembled with the given hybrid electrolytes. Graphical abstract [DISPLAY OMISSION]

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[해외논문] Comparative electrochemical property of solvent-free ceramic/polymer hybrid electrolytes incorporating sol-gel prepared Li-phosphates, Li(Al,Ge)(PO4)3 and Li(Al,Ti)(PO4)3

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[해외논문] Comparative electrochemical property of solvent-free ceramic/polymer hybrid electrolytes incorporating sol-gel prepared Li-phosphates, Li(Al,Ge)(PO4)3 and Li(Al,Ti)(PO4)3

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