Basics and Research Trends of Bulk-Type All-Solid-State Batteries

Abstract

As the demand for larger batteries increases, the development of safe and high energy density secondary batteries is required. The prime candidate is an all-solid-state battery using a sulfide-based solid electrolyte. This paper outlines the basic contents of R&D of all-solid-state batteries, such as classification of all-solid-state batteries, structure of bulk-type all-solid-state batteries, conductivity measurements of solid electrolytes, and calculation of theoretical capacity of electrode active materials. In addition, the research trends of all-solid-state lithium-ion batteries, which are currently the mainstream, and all-solid-state lithium-sulfur batteries, which are expected as next-generation high-capacity all-solid-state batteries, are introduced.

Graphical Abstract