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Award ID contains: 2419596

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  1. ; ; (, Advanced Materials)
    Abstract The utilization of redox‐active gas as cathode materials has been proposed as a promising approach to meet the demand for next‐generation battery technologies. Toward this end, nitrogen oxides (NOx)—inexpensive, abundant gases readily produced from ammonia on an industrial scale—is a promising energy storage media; however, its utilization as cathode material has not been achieved. In this work, the cage effect of NO and NO2radicals are utilized to stabilize the charge product of Li‐NOxcell as N2O3. This cell operates via reversible redox of LiNO3to N2O3, achieving a specific capacity of 1,570 mA h gcarbon−1or 25 mA h cmelectrode−2 at a full cell voltage of 3.85 V with an average energy efficiency of 89% at a current density up to 2 mA cmelectrode−2. These metrics represent one of the highest areal capacity, current density, cell voltage, and energy efficiency reported for a metal‐gas cells. 
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