Enhancement of Oxygen Evolution Activity of Ruddlesden-Popper-Type Strontium Ferrite by Stabilizing Fe4 +
作者： Toshihiro Takashima , Koki Ishikawa , Hiroshi Irie
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摘要: Development of active iron based water oxidation for designing an ideal artificial photosynthesis devices operating under benign neutral pH is highly demanded. We investigated the electrocatalytic activity Ruddlesden-Pop-per-type strontium ferrite (Sr3Fe2O7) toward oxygen evolution reaction (OER). Owing to temperature-dependent efficiency charge disproportionation Fe4+, OER Sr3Fe2O7 varied with temperature, and onset potential at a underwent negative shift approximately 200 mV by increasing temperature stabilization Fe4+. When metal substitution was made stabilizing Fe4+ room dependence disappeared driven small overpotential without indicating that substantially important achieving high activity.
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