Fig. 2: Electrochemical OER performance. | Nature Communications

Fig. 2: Electrochemical OER performance.

From: Anti-dissolution Pt single site with Pt(OH)(O3)/Co(P) coordination for efficient alkaline water splitting electrolyzer

Fig. 2: Electrochemical OER performance.

a Polarization curves of CoHPO and different M1/CoHPO catalysts tested in 0.1 M and 1 M KOH solutions. Reference samples of Ir/C and Pt/C are also included for comparison. b OER data analysis of overpotentials (obtained from the polarization curves at 10 mA cm−2 current density) and Tafel slopes in 0.1 M KOH. c TOFs curves of different M1/CoHPO catalysts based on the loading amounts of metals at different overpotentials. d Mass activities of Pt1/CoHPO with different Pt loadings at 1.53 V vs. RHE. e The polarization curves of Pt1/CoHPO and Pt/C before and after 5000 (for Pt1/CoHPO) and 50 (for Pt/C) potential cycles tested in 0.1 M KOH. f A high-resolution HAADF-STEM image of Pt1/CoHPO after the durability test, in which the bright contrast spots present the Pt single atoms. Scale bar, 2 nm. Error bars in b, d represent the average values (mean ± s.d., n = 3).

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