What is it about?
(Photo)electrochemistry has been expanded from solid/liquid (electrode/liquid-electrolyte) systems to solid/solid (electrode/solid-electrolyte) systems, which are all-solid-state systems. However, no general reference electrodes exist for all-solid-state systems. This study demonstrates that the standard redox potential of Li+/Li at the Li/amorphous-Li3PO4 interface can serve as a reliable standard potential, comparable to those at Li/liquid-electrolytes interfaces.
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Why is it important?
The finding in this study enables the discussion of (photo)electrochemical reactions in all-solid-state systems using potentials instead of voltages, accelerating fundamental insights into (photo)electrochemistry in all-solid-state systems. This must lead to a comprehensive understanding of (de)intercalation-type rechargeable batteries, including both all-solid-state batteries and lithium ion batteries.
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This page is a summary of: Standard Li+/Li redox potential at the Li/amorphous-Li3PO4 interface probed by photoelectron spectroscopy for all-solid-state (photo)electrochemical systems, Applied Physics Letters, August 2025, American Institute of Physics,
DOI: 10.1063/5.0283909.
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