1. Tin Networked Electrode Providing Enhanced Volumetric Capacity and Pressureless Operation for All-Solid-State Li-Ion Batteries.
- Author
-
Whitelevy, Justin M., Ji Woo Kim, Chan Soon Kang, Jong Soo Cho, Kyu Hwan Oh, and Se-Hee Lee
- Subjects
METAL nanoparticles ,TIN research ,STORAGE battery electrodes ,ELECTROCHEMICAL analysis - Abstract
Pure tin (Sn) metal nano-powder is investigated as a high capacity negative electrode for rechargeable all-solid-state Li-ion batteries. Sn is used to form a fully dense network intertwining with solid electrolyte negating necessary conductive additive. Galvanostatic cycling of the Sn composite electrode delivers a reversible capacity 800 mAh g
-1 of Sn with a constant coulombic efficiency over 99.2%. We report on the effect of pressure and rate upon the delithiation mechanics, drawing correlations between Sn volume increase factors and stress accumulation over the course of Sn-Li phase transformations. Due to the fabricated electrode microstructure, we are able to operate the cell at ambient pressure conditions - the next step toward commercialization of the solid-state battery. We believe that this initial work provides new opportunities to study the electrochemical expansion of Sn with the inclusion of rigid electrolyte particles. [ABSTRACT FROM AUTHOR]- Published
- 2015
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