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- W4362692289 abstract "Abstract Exploring highly active and durable electrocatalysts for oxygen evolution reaction (OER) is significant to achieve efficient anion exchange membrane (AEM) water electrolysis. Herein, hollow Co‐based N‐doped porous carbon spheres decorated with ultrafine Ru nanoclusters (HS‐RuCo/NC) are reported as efficient OER electrocatalysts via the pyrolysis of carboxylate‐terminated polystyrene‐templated bimetallic zeolite imidazolate frameworks accommodating Ru (III) ions. The unique hollow structure with hierarchically porous characteristics contributes to the electrolyte penetration for fast mass transport and the exposure of more metal sites. Theoretical and experimental studies reveal the synergistic effect between the in situ formed RuO 2 and Co 3 O 4 as another critical factor for the high OER performance, where the coupling of RuO 2 with Co 3 O 4 can optimize the electronic configuration of RuO 2 /Co 3 O 4 heterostructure and decrease the energy barrier during OER. Meanwhile, the presence of Co 3 O 4 can efficiently suppress the over‐oxidation of RuO 2 , endowing the catalysts with high stability. As expected, when the resultant HS‐RuCo/NC was integrated into an AEM water electrolyzer, the obtained electrolyzer exhibits a cell voltage of 2.07 V to launch the current density of 1 A cm −2 and excellent long‐term stability at 500 mA cm −2 under room temperature in alkaline solution, outperforming the commercial RuO 2 ‐based AEM water electrolyzer (2.19 V)." @default.
- W4362692289 created "2023-04-09" @default.
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- W4362692289 date "2023-04-07" @default.
- W4362692289 modified "2023-10-18" @default.
- W4362692289 title "Highly Stable and Efficient Oxygen Evolution Electrocatalyst Based on Co Oxides Decorated with Ultrafine Ru Nanoclusters" @default.
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- W4362692289 doi "https://doi.org/10.1002/smll.202207611" @default.
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