Unknown

Dataset Information

0

Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li4 Cu8 Ge3 S12.


ABSTRACT: Sulfide-based superionic conductors with high ionic conductivity have been explored as candidates for solid-state Li batteries. However, moisture hypersensitivity has made their manufacture complicated and costly and also impeded applications in batteries. Now, a sulfide-based superionic conductor Li4 Cu8 Ge3 S12 with superior stability was developed based on the hard/soft acid-base theory. The compound is stable in both moist air and aqueous LiOH aqueous solution. The electrochemical stability window was up to 1.5?V. An ionic conductivity of 0.9×10-4 ?S?cm with low activation energy of 0.33?eV was achieved without any optimization. The material features a rigid Cu-Ge-S open framework that increases its stability. Meanwhile, the weak bonding between Li+ and the framework promotes ionic conductivity. This work provides a structural configuration in which weak Li bonding in the rigid framework promotes an environment for highly conductive and stable solid-state electrolytes.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC6850061 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

altmetric image

Publications

Chemistry Design Towards a Stable Sulfide-Based Superionic Conductor Li<sub>4</sub> Cu<sub>8</sub> Ge<sub>3</sub> S<sub>12</sub>.

Wang Yingqi Y   Lü Xujie X   Zheng Chong C   Liu Xiang X   Chen Zonghai Z   Yang Wenge W   Lin Jianhua J   Huang Fuqiang F  

Angewandte Chemie (International ed. in English) 20190429 23


Sulfide-based superionic conductors with high ionic conductivity have been explored as candidates for solid-state Li batteries. However, moisture hypersensitivity has made their manufacture complicated and costly and also impeded applications in batteries. Now, a sulfide-based superionic conductor Li<sub>4</sub> Cu<sub>8</sub> Ge<sub>3</sub> S<sub>12</sub> with superior stability was developed based on the hard/soft acid-base theory. The compound is stable in both moist air and aqueous LiOH aque  ...[more]

Similar Datasets

| S-EPMC4800433 | biostudies-literature
| S-EPMC5004141 | biostudies-literature
| S-EPMC10401185 | biostudies-literature
| S-EPMC5705726 | biostudies-literature
| S-EPMC10613223 | biostudies-literature
| S-EPMC6447557 | biostudies-literature
| S-EPMC5067573 | biostudies-literature
| S-EPMC11310194 | biostudies-literature
| S-EPMC10665354 | biostudies-literature
| S-EPMC6403359 | biostudies-literature