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Title: A Non-aqueous H3PO4 Electrolyte Enables Stable Cycling of Proton Electrodes
A non-aqueous proton electrolyte is devised by dissolving H3PO4 into acetonitrile. The electrolyte exhibits unique vibrational signatures from stimulated Raman spectroscopy. Such an electrolyte exhibits unique characteristics compared to aqueous acidic electrolytes: 1) higher (de)protonation potential for a lower desolvation energy of protons, 2) better cycling stability by dissolution suppression, and 3) higher Coulombic efficiency owing to the lack of oxygen evolution reaction. Two non-aqueous proton full cells exhibit better cycling stability, higher Coulombic efficiency, and less self-discharge compared to the aqueous counterpart.
Authors:
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Award ID(s):
2004636
Publication Date:
NSF-PAR ID:
10231318
Journal Name:
Angewandte Chemie
Volume:
132
Issue:
49
Page Range or eLocation-ID:
22191-22195
ISSN:
0170-9054
Sponsoring Org:
National Science Foundation
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