Monolithic heterojunction quasi-solid-state battery electrolytes based on thermodynamically immiscible dual phases

Sung Ju Cho, Gwan Yeong Jung, Su Hwan Kim, Minchul Jang, Doo Kyung Yang, Sang Kyu Kwak, Sang Young Lee

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Traditional single-phase electrolytes, which are widely used in current state-of-the-art rechargeable batteries, have difficulties simultaneously fulfilling different chemical/electrochemical requirements of anodes and cathodes. Here, we demonstrate a new class of monolithic heterojunction quasi-solid-state electrolytes (MH-QEs) based on thermodynamically immiscible dual phases. As a proof-of-concept of the MH-QEs, their application to lithium-sulfur batteries is explored. Driven by combined effects of structural uniqueness and thermodynamic immiscibility, the electrode-customized MH-QEs provide exceptional electrochemical performance that lies far beyond those accessible with conventional battery electrolytes.

Original languageEnglish
Pages (from-to)559-565
Number of pages7
JournalEnergy and Environmental Science
Issue number2
Publication statusPublished - 2019 Feb

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program (2017M1A2A2087810, 2017M1A2A2044501, 2018R1A2 A1A05019733) and Wearable Platform Materials Technology Center (2016R1A5A1009926) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and future Planning. This work was also financially supported by Corporate R&D of LG Chem. S. K. K. acknowledges the financial support from the NRF of Korea (NRF-2014R1A5A1009799) and computational resources from UNIST-HPC.

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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