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Title: The Linkage Between Electro-Chemical Mechanical Instabilities in Battery Materials
The battery chemistry must be diversified to achieve a sustainable energy landscape by effectively utilizing renewable energy sources. Alkali metal-ion, all-solid-state, metal-air batteries, and multivalent batteries offer unique cost, safety, raw material abundance, energy, and power density solutions. However, realizing these “Beyond Li-ion batteries” must uncover their working principles and performance & property relationship. In this aspect, mitigating chemo-mechanical instabilities in the structure and surface of the electrodes plays a crucial role in their performance. Unfortunately, the coupling between electrochemical and mechanical interactions is often poorly understood due to a lack of operando characterization. This review article explains the working principles of curvature measurement and digital image correlation for measuring stress and strain generations in battery materials. We provided specific examples of how these operando mechanical measurements shed light on instabilities in alkali-metal ion electrodes, solid electrolytes, Li-O2 batteries, and aqueous Zn-ion batteries. Operando mechanical measurements offer an effective way to map changes in the physical fingerprint of the battery materials, therefore providing crucial information to elucidate instabilities in battery materials.  more » « less
Award ID(s):
2402216
PAR ID:
10486466
Author(s) / Creator(s):
; ;
Publisher / Repository:
The Minerals, Metals & Materials Society
Date Published:
Journal Name:
JOM
ISSN:
1047-4838
Subject(s) / Keyword(s):
curvature measurement, digital image correlation, solid-electrolyte interface, cathode-electrolyte interface, particle fracture, diffusion-induced stress
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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