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Development of cost‐effective, active trifunctional catalysts for acidic oxygen reduction (ORR) as well as hydrogen and oxygen evolution reactions (HER and OER, respectively) is highly desirable, albeit challenging. Herein, single‐atomic Ru sites anchored onto Ti3C2Tx MXene nanosheets are first reported to serve as trifunctional electrocatalysts for simultaneously catalyzing acidic HER, OER, and ORR...
In article number 2003438, Huanqi Cao, Hongyi Li, Xijun Liu, and co‐workers demonstrate that Co2FeO4 nanosheet arrays can be adopted as highly efficient bifunctional catalysts for electrocatalytic CO2 reduction and water oxidation. Powered by a triple‐junction GaInP2/GaAs/Ge photovoltaic cell, a two‐electrode overall CO2 splitting electrolyzer constructed with both a cathode and anode being fabricated...
Solar‐driven electrochemical overall CO2 splitting (OCO2S) offers a promising route to store sustainable energy; however, its extensive implementation is hindered by the sluggish kinetics of two key reactions (i.e., CO2 reduction reaction and oxygen evolution reaction (CO2RR and OER, respectively)). Here, as dual‐functional catalysts, Co2FeO4 nanosheet arrays having high electrocatalytic activities...
In article number 1905825, Yuan Qiu, Xijun Liu, and co‐workers design a simple yet novel strategy to develop oxygen‐doped Nb4N5 by introducing nitrogen‐vacancy. The catalyst exhibits efficient performance for selective conversion of CO2 to CO and simultaneous excellent durability. The work provides a new perspective for an in‐depth understanding toward the structure–activity relationship between defects...
Surface vacancy engineering holds great promise for boosting the electrocatalytic activity for CO2 reduction reaction; however, the vacancies are generally unstable and may degrade into the inactive phase during electrolysis. Stabilizing the vacancy‐enriched structure by heteroatoms can be an effective strategy to get a robust and active catalyst. Herein, a nitrogen‐vacancy enriched Nb4N5 on N‐doped...
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