Engineered metal coverage of anode catalyst layer enhancing cell reversal tolerance for proton exchange membrane fuel cells

Constructing highly durable reversal-tolerant anodes via integrating high-surface-area Ti4O7 supported Pt and Ir@IrOx for proton exchange membrane fuel cells

“…3 Notably, the COR is more harmful than the OER because the irreversible corrosion of carbon leads to the detachment of Pt nanoparticles, 4 increased internal resistance, 5 and the collapse of the catalyst layer, 6 significantly deteriorating performance. 7 2H 2 O → H + + O 2 + 4e − E 0 = 1.23 V ( vs. RHE)C + 2H 2 O → CO 2 + 4H + + 4e − E 0 = 0.21 V ( vs. RHE)C + H 2 O → CO + 2H + + 4e − E 0 = 0.52 V ( vs. RHE)Fuel cell system control strategies are applied to prevent fuel starvation. However, the system control is always hysteretic due to the distributed effect of the large effective area of commercial single cells and the porous structure of the electrode.…”