Fig. 4: HER, OER and overall water splitting performance of the NiSA-O/Mo2C catalyst in 1.0 M KOH (pH=14) with iR compensation. | Nature Communications

Fig. 4: HER, OER and overall water splitting performance of the NiSA-O/Mo2C catalyst in 1.0 M KOH (pH=14) with iR compensation.

From: Microenvironment reconstitution of highly active Ni single atoms on oxygen-incorporated Mo2C for water splitting

Fig. 4

a Polarization curves and b Tafel plots for NiSA-O/Mo2C, Ni1.5-O/Mo2C, Ni4.5-O/Mo2C and pure O/Mo2C, commercial IrO2 for OER (loading amount 0.74 mg cm-2). c Polarization curve and d Tafel plots for NiSA-O/Mo2C, Ni1.5-O/Mo2C, Ni4.5-O/Mo2C and pure O/Mo2C, 20% Pt/C for HER (loading amount 0.7 mg cm-2). e Comparison of the overpotentials of NiSA-O/Mo2C and recently reported non-precious metal SACs at 10 mA cm−2 in 1.0 M KOH. The histograms in yellow and green denote the HER, OER performance, respectively. f Current density versus time (i–t) curves for HER and OER. g Polarization curves of NiSA-O/Mo2C||NiSA-O/Mo2C and Pt/C||IrO2 couples for overall water splitting in 1.0 M KOH (loading amount 0.74 mg cm-2). Inset g is the long-term durability of overall water splitting at a current density of 10 mA cm−2. h Illustration of the NiSA-O/Mo2C electrodes for overall water splitting.

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