Fig. 2: Examination of the mixed potential theory (MPT) for aerobic HQ oxidation over Pt/C. | Nature Communications

Fig. 2: Examination of the mixed potential theory (MPT) for aerobic HQ oxidation over Pt/C.

From: Bridging mixed potential theory and electrochemical promotion of thermal catalysis during hydroquinone-benzoquinone redox reactions

Fig. 2: Examination of the mixed potential theory (MPT) for aerobic HQ oxidation over Pt/C.

a The current dependence of HQOR under Ar and ORR on the catalyst potential. Comparisons of (b) measured BQ formation rate and (c) operando open-circuit potential (OCP) with the prediction based on MPT. Conditions: Working electrode (WE): 0.75 mg Pt/C on 1 × 1 cm2 on CP; pressure: 101 kPa; reference electrode (RE): Hg/Hg2Cl2 (sat. KCl); counter electrode (CE): carbon rod; 295 K; 0.1 M HClO4; pH 1.2; stirring rate: 450 rpm.

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