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- W4387420949 abstract "Abstract Achieving highly performant photoanodes for oxygen evolution is key to developing photoelectrochemical devices for solar water splitting. In this work, BiVO 4 photoanodes are enhanced with a series of core–shell structured bimetallic nickel‐cobalt phosphides (MPs), and key insights into the role of co‐catalysts are provided. The best BiVO 4 /Ni 1.5 Co 0.5 P and BiVO 4 /Ni 0.5 Co 1.5 P photoanodes achieve a 3.5‐fold increase in photocurrent compared with bare BiVO 4 . It is discovered that this enhanced performance arises from a synergy between work function, catalytic activity, and capacitive ability of the MPs. Distribution of relaxation times analysis reveals that the contact between the MPs, BiVO 4 , and the electrolyte gives rise to three routes for hole injection into the electrolyte, all of which are significantly improved by the presence of a second metal cation in the co‐catalyst. Kinetic studies demonstrate that the significantly improved interfacial charge injection is due to a lower charge‐transfer resistance, enhanced oxygen‐evolution reaction kinetics, and larger surface hole concentrations, providing deeper insights into the carrier dynamics in these photoanode/co‐catalyst systems for their rational design." @default.
- W4387420949 created "2023-10-08" @default.
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- W4387420949 date "2023-10-06" @default.
- W4387420949 modified "2023-10-09" @default.
- W4387420949 title "BiVO<sub>4</sub> Photoanodes Enhanced with Metal Phosphide Co‐Catalysts: Relevant Properties to Boost Photoanode Performance" @default.
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- W4387420949 doi "https://doi.org/10.1002/smll.202306757" @default.
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