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Dualistic Roles of Water Molecules in Mn-Based Oxide Cathodes for Sodium ion Batteries
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DOI：10.1016/j.ensm.2026.105429.png)
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Abstract
En 中文
• Water is revisited from a detrimental impurity to a functional regulator in Mn-based cathodes. Its dual roles in triggering degradation and enabling stabilization are systematically unified. • The electrochemical impact of H2O is governed by its structural state, location, and interaction with the host lattice. • Crystal or lattice H2O can act as electrostatic shields and structural pillars. These effects mitigate lattice strain, suppress Mn dissolution, and facilitate Na⁺ diffusion. • The functional role of water is extended beyond Mn-based oxides to broader rechargeable battery systems.
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20.2
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5.6K
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6.3W
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