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

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

doi:10.1016/j.jallcom.2020.155878

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

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

^*Corresponding author for this work

Division of International Engineering and Science

Korea Research Institute of Chemical Technology
Hanyang University

Research output: Contribution to journal › Journal article › peer-review

5 Scopus citations

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.

Original language	English
Article number	155878
Journal	Journal of Alloys and Compounds
Volume	843
DOIs	https://doi.org/10.1016/j.jallcom.2020.155878
State	Published - 2020.11.30

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Electrolyte
Hybrid
Phosphate
Solid-state battery

Access to Document

10.1016/j.jallcom.2020.155878

Cite this

Park, H., Choi, S. K., Lee, E. G., Wu, M., Huu, H. T., Kang, Y., Kim, D. Y., Im, W. B., & Choi, S. (2020). 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, 843, Article 155878. https://doi.org/10.1016/j.jallcom.2020.155878

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title = "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",

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.",

keywords = "Electrolyte, Hybrid, Phosphate, Solid-state battery",

author = "Hyemin Park and Choi, \{Seul ki\} and Lee, \{Eun Gyu\} and Mihye Wu and Huu, \{Ha Tran\} and Yongku Kang and Kim, \{Do Youb\} and Im, \{Won Bin\} and Sungho Choi",

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year = "2020",

month = nov,

day = "30",

doi = "10.1016/j.jallcom.2020.155878",

language = "English",

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T1 - 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

AU - Park, Hyemin

AU - Choi, Seul ki

AU - Lee, Eun Gyu

AU - Wu, Mihye

AU - Huu, Ha Tran

AU - Kang, Yongku

AU - Kim, Do Youb

AU - Im, Won Bin

AU - Choi, Sungho

PY - 2020/11/30

Y1 - 2020/11/30

N2 - 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.

AB - 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.

KW - Electrolyte

KW - Hybrid

KW - Phosphate

KW - Solid-state battery

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DO - 10.1016/j.jallcom.2020.155878

M3 - Journal article

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VL - 843

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

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