Fig. 1. (IMAGE)
Caption
Proposed mechanism of Pt dissolution reaction considering the effect of the electrolyte components. In the case of the left figure (Li ions), the diffusion of Pt ions to the offshore (right side in this figure) is favored. In contrast, in the case of the right figure (Cs ions), the diffusion of Pt ions to the offshore is suppressed and Pt ion re-deposition is more likely to occur, resulting in suppressed Pt dissolution. Thus, by designing the alkali metal cation species in the electrolyte, the dissolved ions can be kept near the electrode, which promotes their re-deposition and suppresses their dissolution without changing the electrode material.
Credit
Reprinted with permission from J. Am. Chem. Soc. 2025, 147, 5, 4667–4674. Copyright 2025 American Chemical Society.
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