In Situ Gel Electrolyte Network Guaranteeing Ionic Communication between Solid Electrolyte and Cathode

18 Pages Posted: 16 Feb 2022

See all articles by Hyeju Shin

Hyeju Shin

affiliation not provided to SSRN

Seong Jin Cho

Gachon University - Department of Psychiatry

Sinho Choi

affiliation not provided to SSRN

Bo Yun Jang

affiliation not provided to SSRN

Jihong Jeong

affiliation not provided to SSRN

Yoon-Gyo Cho

affiliation not provided to SSRN

Sang-Young Lee

Ulsan National Institute of Science and Technology (UNIST) - Department of Energy Engineering

Hyun-Kon Song

affiliation not provided to SSRN

Ji Haeng Yu

affiliation not provided to SSRN

Tae-Hee Kim

Korea Institute of Energy Research (KIER)

Multiple version iconThere are 2 versions of this paper

Abstract

Solid electrolytes have been regarded as promising candidates replacing organic liquid electrolyte due to much enhanced safety, which is able to use lithium metal as an anode material for high energy system. Among several solid electroytes, garnet-type solid electrolyte has wide electrochemical window as well as high chemical stability and ionic conductivity at room temperature. However, from an assembled full cell’s point of view, high interfacial resistance between electrode and solid electrolyte is a huge obstacle which should be overcome. Herein, we synthesized high ionic conductivy of Gallium-doped garnet-type solid electrolyte (Li6.25Ga0.25La3Zr2O12) having 1.2 mS cm-1 at room temperature and then applied gel polymer electrolyte into cathode by in situ gelation method for a full cell system. The interfacial resistance was reduced by about 260 times and rate capability from 0.05C to 1C was 80%, which is superior to a hybrid of liquid electrolyte and LGLZO cell system. Initial capacity was retained 89% even after 800 cycles at 0.5C.

Keywords: Gel polymer electrolyte, solid electrolyte, Interface resistance, in situ gelation, Lithium batteries

Suggested Citation

Shin, Hyeju and Cho, Seong Jin and Choi, Sinho and Jang, Bo Yun and Jeong, Jihong and Cho, Yoon-Gyo and Lee, Sang-Young and Song, Hyun-Kon and Yu, Ji Haeng and Kim, Tae-Hee, In Situ Gel Electrolyte Network Guaranteeing Ionic Communication between Solid Electrolyte and Cathode. Available at SSRN: https://ssrn.com/abstract=3973645 or http://dx.doi.org/10.2139/ssrn.3973645

Hyeju Shin

affiliation not provided to SSRN ( email )

No Address Available

Seong Jin Cho

Gachon University - Department of Psychiatry ( email )

Incheon
Korea, Republic of (South Korea)

Sinho Choi

affiliation not provided to SSRN ( email )

No Address Available

Bo Yun Jang

affiliation not provided to SSRN ( email )

No Address Available

Jihong Jeong

affiliation not provided to SSRN ( email )

No Address Available

Yoon-Gyo Cho

affiliation not provided to SSRN ( email )

No Address Available

Sang-Young Lee

Ulsan National Institute of Science and Technology (UNIST) - Department of Energy Engineering ( email )

gil 50
Ulsan, 689-798
Korea, Republic of (South Korea)

Hyun-Kon Song

affiliation not provided to SSRN ( email )

No Address Available

Ji Haeng Yu

affiliation not provided to SSRN ( email )

No Address Available

Tae-Hee Kim (Contact Author)

Korea Institute of Energy Research (KIER) ( email )

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