In situ gel electrolyte network guaranteeing ionic communication between solid electrolyte and cathode

Hyeju Shin, Seong Jin Choi, Sinho Choi, Bo Yun Jang, Jihong Jeong, Yoon Gyo Cho, Sang Young Lee, Hyun Kon Song, Ji Haeng Yu, Tae Hee Kim

Research output: Contribution to journalArticlepeer-review


Solid electrolytes are 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 synthesize 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 is 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 retaines 89% even after 800 cycles at 0.5C.

Original languageEnglish
Article number231926
JournalJournal of Power Sources
Publication statusPublished - 2022 Oct 30

Bibliographical note

Funding Information:
This work was supported by the framework of research and development program of Korea Institute of Energy Research (contract No. C2-2407 ) and Ministry of Trade, Industry and Energy in South Korea (KEIT, contract No. 20009866 ).

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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