2022
DOI: 10.1021/acs.jpcc.2c06441
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Ti4O7-Enhanced Carbon Supports to Stabilize NaO2 in Sodium-Oxygen Batteries

Abstract: Sodium-oxygen batteries (NaOBs) have been investigated extensively over the past decade as a high-energy-density alternative to the Li-ion battery system. However, the instability of the main discharge product, sodium superoxide (NaO2), toward the carbon cathode has limited the rechargeability and cycle life of the cell. Here, Magnéli-phase Ti4O7 is studied as a stable coating for carbon paper cathodes in NaOBs. Ti4O7 is shown to be stable toward NaO2 attack via 23Na magic angle spinning (MAS) solid-state nuc… Show more

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