02035nas a2200181   4500008004100000022001400041245013100055210006900186260000800255300001600263490000700279520136000286100001701646700001801663700003101681700001701712856012401729       2026                        eng d  a2050-748800aActivating lattice oxygen via proton-decoupled electron transfer in iron chromium phosphate for efficient (sea)water oxidation0 aActivating lattice oxygen via protondecoupled electron transfer   cAUG  a32691-327050 v143 a<p>
	Given the escalating freshwater scarcity crisis, seawater oxidation has emerged as a promising approach to advancing sustainable hydrogen production; however, its practical feasibility is severely hindered by pervasive chloride-induced corrosion. In this study, we develop an efficient FeCr-phosphate (FeCrPi) as an electrocatalyst by a simple solvothermal strategy, which exhibits superior oxygen evolution reaction (OER) activity in both alkaline freshwater and seawater. The rational design of FeCrPi affords dual advantages: phosphate groups promote the lattice oxygen mechanism (LOM), while the CrO42- species generated in situ during seawater oxidation adsorb onto the electrode surface, creating a protective layer that mitigates chloride corrosion, suppress the chlorine evolution reaction (CER), and enhance the OER selectivity. As a result, FeCrPi demonstrates excellent OER activity in alkaline freshwater and alkaline real seawater, achieving a high current density of 0.5 A cm-2 at 280 and 340 mV, respectively, and also maintaining an impressive stability over 100 h at a high applied potential of 2 V in real alkaline seawater. This work establishes a viable phosphate-engineering strategy for fabricating a highly efficient chloride-resistive electrocatalyst with OER selectivity, which enables LOM-assisted seawater oxidation.</p>
1 aDas, Chandni1 aKumar, Hitesh1 aThotiyl, Musthafa, Ottakam1 aRoy, Poulomi  uhttps://library.ncl.res.in/content/activating-lattice-oxygen-proton-decoupled-electron-transfer-iron-chromium-phosphate