Investigation of highly conducting Na+ rich electrolytes by crystallization of thiogermanate glasses
A carbon-free renewable energy future requires that next generation electrochemical energy storage systems be developed. Even as successful as the present lithium batteries have been, their dependence on flammable liquid electrolytes require that new battery systems be developed. Safer all-solid-state batteries which would not suffer from leakage, volatilization, or flammability could be an alternative. The development of all-solid-state sodium batteries should not be overlooked either. Sodium is indeed among the most abundant of all elements and significantly cheaper than lithium. The aim of the project is to identify Na+ conducting chalcogenide glass and/or glass-ceramics with performances in terms of conductivity and electrochemical stability that will allow the development of all-solid-state batteries working at ambient temperature. We propose to study a new 0.66Na2S-0.34GeS2 conducting chalcogenide glass by neutron thermodiffractometry. These measurements will help to identify eventual phase transitions, occurrence of metastable phases that could exist on small temperature intervals as well as possible decompositions.
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PIARRISTEGUY Andrea Alejandra and NASSIF Vivian. (2021). Investigation of highly conducting Na+ rich electrolytes by crystallization of thiogermanate glasses. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.EASY-852
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