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New Insights into Aliovalent Substituted Halide Solid Electrolytes for Cobalt-Free All-Solid-State Batteries by Changhong Wang; Shuo Wang; Xudong Liu; Yanlong Wu; Ruizhi Yu; Hui Duan; Jung Tae Kim; Huan Huang; Jiantao Wang; Yifei Mo; Xueliang Sun is a Engineering article available to read on EtoBox.

What is New Insights into Aliovalent Substituted Halide Solid Electrolytes for Cobalt-Free All-Solid-State Batteries about?

## Broader context statement With the increasing demand for clean and sustainable energy, developing highperformance and safe energy storage has become a critical research priority. Halide solid-state electrolytes (SSEs) have emerged as a promising alternative to conventional liquid electrolytes due to their high ionic conductivity and exceptional stability at high voltages. Integrating these materials into all-solid-state batteries (ASSBs), which are free of liquid components and can offer higher energy density, safety, and longer cycle life, could significantly improve battery technology's performance and safety. However, the fundamental understanding of the structure-to-property relationship in halide SSEs is still lacking. This study highlights the design principles for developing efficient and stable halide SSEs for ASSBs. By exploring the influence of ion and vacant-site concentration on ionic conductivity, the authors found that achieving a balance in the ion and vacant-site concentration in the hexagonal close-packing anion sublattice is crucial for efficient ion transport, which leads to the highest ionic diffusivity and lowest activation energy. The study also reveals tha

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Author

Changhong Wang; Shuo Wang; Xudong Liu; Yanlong Wu; Ruizhi Yu; Hui Duan; Jung Tae Kim; Huan Huang; Jiantao Wang; Yifei Mo; Xueliang Sun

Publisher

Royal Society of Chemistry (RSC)

Published

2023

Field

Engineering (Physical Sciences)