Solid Halide Electrolytes with High Lithium‐Ion Conductivity for Application in 4 V Class Bulk‐Type All‐Solid‐State Batteries

By T. Asano, A. Sakai, Satoru Ouchi, M. Sakaida, Akinobu Miyazaki, S. Hasegawa. Advances in Materials, 2018

963 citations recorded by the source corpus.

New lithium halide solid‐electrolyte materials, Li3YCl6 and Li3YBr6, are found to exhibit high lithium‐ion conductivity, high deformability, and high chemical and electrochemical stability, which are required properties for all‐solid‐state battery (ASSB) applications, particularly for large‐scale deployment. The lithium‐ion conductivities of cold‐pressed powders surpass 1 mS cm−1 at room temperature without additional intergrain or grain boundary resistances. Bulk‐type ASSB cells employing these new halide solid electrolyte materials exhibit coulombic efficiencies as high as 94% with an active cathode material of LiCoO2 without any extra coating. These superior electrochemical characteristics, as well as their material stability, indicate that lithium halide salts are another promising candidate for ASSB solid electrolytes in addition to sulfides or oxides.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/2a9c11fed94e2ad31e57a944d24ac924716267ac

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. Liquan Chen
2. Hong Li
3. Thorben Krauskopf
4. Saneyuki Ohno
5. Georg F. Dewald
6. W. Zeier
7. Marvin A. Kraft
8. Paul Till

In Materials Chemistry

1. Liquan Chen
2. Hong Li
3. W. Zeier
4. Thorben Krauskopf
5. A. Banik
6. Saneyuki Ohno

Citations in the corpus

• Materials design of ionic conductors for solid state batteries (2020, background): “While these materials were investigated in the early 1990s [419–424], only the application of ball-milling has led to the recently achieved high ionic conductivities, likely related to an underlying structural disorder [362, 412, 418].”
• Progress in thermal stability of all‐solid‐state‐Li‐ion‐batteries (2021, background): “Asano et al.(96) claimed that Li3YCl6 can be stable up to 450 C based on DSC and XRD results, but no structural analysis after heating were provided.”