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Results of cationic impurities on PEM electrolyser efficiency. a,b, Polarization curves (a) and chronopotentiometric testing at 1.0 A cm−2 (b) of a Pt/C||IrO2 electrolyser equipped with DI water containing Na+ , Ca2+ or Fe3+ ions. In a and b, curves for the PEM electrolyser working in DI water are included for reference. Catalyst loading of the Pt/C||IrO2 electrolyser: 2 mgPt/C per cm2 (mgPt/C cm−2; 0.4mgPt cm−2) and 0.5 mgIrO2 cm2 . c, Schematic illustration of the coupling of the pH ultramicroelectrode with a SECM to observe the in situ pH within the Pt/C catalyst layer (CL). Notice that feedwater was equipped on each side, and the anode and cathode feedwater had been blended throughout electrolyser operation. d, pHcathode values measured at totally different present densities for a hard and fast distance of 1 μm between the pH ultramicroelectrode and the catalyst layer. All values are expressed as imply ± commonplace deviation (s.d.); the error bars point out the s.d. for 3 measurements. e, pHcathode scanned at 0.5 A cm−2 within the x–y aircraft over an space of 100 μm × 100 μm. f, Transmembrane mobility of Na+ , Ca2+ and Fe3+ when the electrolyser was operated at 1.0 A cm−2. Credit score: Wang et al. (Nature Power, 2025).
In recent times, vitality engineers have been engaged on a variety of applied sciences that might assist to generate and retailer electrical energy extra sustainably….
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Author : tech365
Publish date : 2025-06-26 12:08:00
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