Palladium Phosphide as a Stable and Efficient Electrocatalyst for Overall Water Splitting.

Author(s) Luo, F.; Zhang, Q.; Yu, X.; Xiao, S.; Ling, Y.; Hu, H.; Guo, L.; Yang, Z.; Huang, L.; Cai, W.; Cheng, H.
Journal Angew Chem Int Ed Engl
Date Published 2018 Sep 21
Abstract

A palladium phosphide electrocatalyst supported on carbon black (PdP @CB) shows efficient water splitting in both alkaline and neutral electrolytes. Significantly lower overpotentials are required for PdP @CB (27.5 mV in 0.5 m H SO ; 35.4 mV in 1 m KOH; 84.6 mV in 1 m PBS) to achieve a HER electrocatalytic current density of 10 mA cm compared to commercial Pt/CB (30.1 mV in 0.5 m H SO ; 46.6 mV in 1 m KOH; 122.7 mV in 1 m PBS). Moreover, no loss in HER activity is detectable after 5000 potential sweeps. Only 270 mV and 277 mV overpotentials are required to reach a current density of 10 mA cm for PdP @CB to catalyze OER in 1 m KOH and 1 m PBS electrolytes, which is better OER activity than the benchmark IrO electrocatalyst (301 mV and 313 mV to drive a current density of 10 mA cm ). 1.59 V and 1.72 V are needed for PdP @CB to achieve stable water splitting catalytic current density of 10 mA cm in 1 m PBS and 50 mA cm in 1 m KOH for 10 h, respectively.

DOI 10.1002/anie.201810102
ISSN 1521-3773
Citation Luo F, Zhang Q, Yu X, Xiao S, Ling Y, Hu H, et al. Palladium Phosphide as a Stable and Efficient Electrocatalyst for Overall Water Splitting. Angew Chem Int Ed Engl. 2018.

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