Source data-NCOMMS-23-34511-B.xlsx
收藏Figshare2023-10-17 更新2026-04-08 收录
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资源简介：
Stabilizing active sites of non-iridium-based oxygen evolution reaction (OER) electrocatalysts is crucial, but remains a big challenge for hydrogen production by acidic water splitting. Here, we report that non-stoichiometric Ti oxides (TiO<sub>x</sub>) can safeguard the Ru sites through structural-confinement and charge-redistribution, thereby extending the catalyst lifetime in acid by 10 orders of magnitude longer compared to that of the stoichiometric one (Ru/TiO<sub>2</sub>). By exploiting the redox interaction-engaged strategy, the in situ growth of TiO<sub>x</sub> on Ti foam and the loading of Ru nanoparticles are realized in one step. The as-synthesized binder-free Ru/TiO<sub>x</sub> catalyst exhibits low OER overpotentials of 174 and 265 mV at 10 and 500 mA cm<sup>-2</sup>, respectively. Experimental characterizations and theoretical calculations confirm that TiO<sub>x</sub> stabilizes the Ru active center, enabling operation at 10 mA cm<sup>-2</sup> for over 37 days. This work opens an avenue of using non-stoichiometric compounds as stable and active materials for energy technologies.
提供机构：
Li, Jia; Zhou, Lingxi; Yin, Fang; Kang, Feiyu; Lv, Ruitao; Shao, Yang-Fan
创建时间：
2023-10-17
