Promoting renewable energy production: LaNiO₃ perovskite electrocatalysts have been prepared by a sol-gel protocol. Subsequent calcination at 700 °C yields a macroporous material with modest surface area. Hydrogen reduction induces surface defects, in particular a high concentration of surface oxygen vacancies. The resulting electrocatalyst exhibits a significantly higher current density at lower overpotential, with faster kinetics and superior stability for oxygen evolution for water splitting.

中文翻译：

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表面缺陷对用于放氧反应的 LaNiO3 钙钛矿电催化剂的影响

促进可再生能源生产：LaNiO ₃钙钛矿电催化剂已通过溶胶-凝胶协议制备。随后在 700 °C 下煅烧产生具有适度表面积的大孔材料。氢还原引起表面缺陷，特别是高浓度的表面氧空位。所得电催化剂在较低的过电位下表现出明显更高的电流密度，具有更快的动力学和优异的水分解析氧稳定性。