Fig. 5: AEMWE performance.
a Electrocatalytic overall water-splitting properties in a H-type cell of the Pt1/CoHPO as both anodic and cathodic catalysts. The benchmark Pt/C + Ir/C as a catalyst is also included for comparison. b Electrocatalytic water-splitting properties of the Pt1/CoHPO and the benchmark Pt/C + Ir/C measured in an alkaline AEMWE setup operating at 80 °C. Inset, a typical single AEMWE setup comprising a membrane electrode assembly (MEA) and bipolar plates (BP) with a flow field are presented, wherein the MEA comprises a gas diffusion layers with a Ti felt and a carbon fiber paper (CFP) at the anodic and cathodic sides, respectively, anodic and cathodic catalyst layers and an anion exchange membrane (AEM). c Mass activities comparisons of the Pt1/CoHPO and the commercial Pt/C + Ir/C at various cell voltages, showing over two orders of magnitude higher of mass activity for the Pt1/CoHPO compared with that of commercial Pt/C + Ir/C. d Stability tests of the Pt1/CoHPO-based MEA. Error bars in b, c represent the average values (mean ± s.d., n = 3).
