Solution-Processable Glass LiI-Li4 SnS4 Superionic Conductors for All-Solid-State Li-Ion Batteries

Kern Ho Park; Dae Yang Oh; Young Eun Choi; Young Jin Nam; Lili Han; Ju-Young Kim; Huolin Xin; Feng Lin; Seung M Oh; Yoon Seok Jung

doi:10.1002/adma.201505008

Solution-Processable Glass LiI-Li4 SnS4 Superionic Conductors for All-Solid-State Li-Ion Batteries

Adv Mater. 2016 Mar 2;28(9):1874-83. doi: 10.1002/adma.201505008. Epub 2015 Dec 22.

Authors

Kern Ho Park^{1

2}, Dae Yang Oh¹, Young Eun Choi¹, Young Jin Nam¹, Lili Han³, Ju-Young Kim⁴, Huolin Xin³, Feng Lin⁵, Seung M Oh², Yoon Seok Jung¹

Affiliations

¹ School of Energy and Chemical Engineering, Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.
² School of Chemical and Biological Engineering, Seoul National University, 599 Gwanangno, Gwanak-gu, Seoul, 151-742, South Korea.
³ Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA.
⁴ Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.
⁵ Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

PMID: 26690558
DOI: 10.1002/adma.201505008

Abstract

A new, highly conductive (4.1 × 10(-4) S cm(-1) at 30 °C), highly deformable, and dry-air-stable glass 0.4LiI-0.6Li4 SnS4 is prepared using a homogeneous methanol solution. The solution process enables the wetting of any exposed surface of the active materials with highly conductive solidified electrolytes (0.4LiI-0.6Li4 SnS4), resulting in considerable improvements in the electrochemical performance of these electrodes over conventional mixture electrodes.

Keywords: composites; electrodes; li-ion batteries; nanostructures; solid electrolytes.