About this Abstract |
Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
Presentation Title |
Modeling the Microstructure-Dependent Elastic Modulus and Ionic Conductivity of Structural Battery Electrolyte for Low-Temperature Applications |
Author(s) |
Tianyang Zhou, Cesar Metlich, Jaybelle Pranada, Dimitris Lagoudas |
On-Site Speaker (Planned) |
Tianyang Zhou |
Abstract Scope |
Structural batteries that store energy and provide structural integrity are urgently needed for the weight reduction of electrical automobiles and aerial vehicles. Structural electrolytes are vital in structural batteries to carry and transfer mechanical loads, and facilitate ion transport. Bicontinuous electrolyte combines liquid electrode and mechanically robust materials into an bicontinuous structure. There is an intrinsic tradeoff between mechanical and electrochemical performances, which needs to be understood and improved. The coupling between mechanical and electrochemical responses also requires further investigation. The present work develops a model for a bicontinuous electrolyte, analyzes the significance of the tradeoff, and studies the performance variation with composition, microstructure, and temperature. Specifically, the Young’s modulus and ionic conductivity of the bicontinuous electrolytes, as well as the overall stress-strain response of the electrolyte during charging and discharging with and without external mechanical loading, are modeled. The microstructure is generated based on scanning electron microscope images. Young's modulus and ionic conductivity of the components in the bicontinuous electrolyte are calibrated at one composition. Then both micromechanics and finite element analysis are employed to validate and predict the mechanical and electrochemical response of bicontinuous electrolytes for various compositions at various temperatures. In the future, new microstructure designs of the bicontinuous electrolyte will be proposed with shorter ion pathways and high mechanical performance. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |