Design Strategies, Practical Considerations, and New Solution Processes of Sulfide Solid Electrolytes for All-Solid-State Batteries

Kern Ho Park, Qiang Bai, Dong Hyeon Kim, Dae Yang Oh, Yizhou Zhu, Yifei Mo, Yoon Seok Jung

Research output: Contribution to journalArticlepeer-review

193 Citations (Scopus)

Abstract

Owing to the ever-increasing safety concerns about conventional lithium-ion batteries, whose applications have expanded to include electric vehicles and grid-scale energy storage, batteries with solidified electrolytes that utilize nonflammable inorganic materials are attracting considerable attention. In particular, owing to their superionic conductivities (as high as ≈10−2 S cm−1) and deformability, sulfide materials as the solid electrolytes (SEs) are considered the enabling material for high-energy bulk-type all-solid-state batteries. Herein the authors provide a brief review on recent progress in sulfide Li- and Na-ion SEs for all-solid-state batteries. After the basic principles in designing SEs are considered, the experimental exploration of multicomponent systems and ab initio calculations that accelerate the search for stronger candidates are discussed. Next, other issues and challenges that are critical for practical applications, such as instability in air, electrochemical stability, and compatibility with active materials, are discussed. Then, an emerging progress in liquid-phase synthesis and solution process of SEs and its relevant prospects in ensuring intimate ionic contacts and fabricating sheet-type electrodes is highlighted. Finally, an outlook on the future research directions for all-solid-state batteries employing sulfide superionic conductors is provided.

Original languageEnglish
Article number1800035
JournalAdvanced Energy Materials
Volume8
Issue number18
DOIs
Publication statusPublished - 2018 Jun 25

Bibliographical note

Funding Information:
K.H.P. and Q.B. contributed equally to this work. K.H.P., D.H.K., D.Y.O., and Y.S.J. were supported by the Technology Development Program to Solve Climate Changes and by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (Nos. NRF-2017M1A2A2044501 and NRF-2018R1A2B6004996), and by the Materials and Components Technology Development Program of MOTIE/KEIT (10077709). Q.B., Y.Z., and Y.M. were supported by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, under Award Nos. DE-EE0006860 and DE-EE0007807.

Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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