AUTHOR=Wang Liguang , Li Jun , Lu Guolong , Li Wenyan , Tao Qiqi , Shi Caihong , Jin Huile , Chen Guang , Wang Shun 

TITLE=Fundamentals of Electrolytes for Solid-State Batteries: Challenges and Perspectives

JOURNAL=Frontiers in Materials

VOLUME=7

YEAR=2020

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2020.00111

DOI=10.3389/fmats.2020.00111

ISSN=2296-8016

ABSTRACT=<p>Compared with traditional lithium-ion systems, solid-state batteries could achieve high safety and energy density. Although great improvements have been made, especially in solid-state electrolytes, fundamental challenges still remain for the solid-state systems in terms of chemistry and mechanics. This review summarizes the fundamental issues in solid-state batteries with a focus on three critical phenomena: (i) the principles of developing high ionic conductors, (ii) structural evolution at chemically unstable electrolyte-electrode interfaces, and (iii) the effects of manufacturing solid-state batteries, including electrode, and electrolyte design. The future perspectives are also outlined to guide the development of solid-state batteries.</p>