The electrocatalysis of oxygen evolution reaction (OER) plays a key role in clean energy storage and transfer. Nonetheless, the sluggish kinetics and poor durability under acidic and neutral conditions severely hinder practical applications such as electrolyzer compatible with the powerful proton exchange membrane and biohybrid fuel production. Here, we report a boron-doped ruthenium dioxide electrocatalyst (B-RuO₂) fabricated by a facile boric acid assisted strategy which demonstrates excellent acidic and neutral OER performances. Density functional theory calculations and advanced characterizations reveal that the boron species form an anomalous B-O covalent bonding with the oxygen atoms of RuO₂ and expose the fully coordinately bridge ruthenium site (Ru-bri site), which seems like a switch that turns on the inactive Ru-bri site into OER-active, resulting in more exposed active sites, modified electronic structure, and optimized binding energy of intermediates. Thus, the B-RuO₂ exhibits an ultralow overpotential of 200 mV at 10 mA/cm² and maintains excellent stability compared to commercial RuO₂ in 0.5 M sulfuric acid. Moreover, the superior performance is as well displayed in neutral electrolyte, surpassing most previously reported catalysts.

析氧反应（OER）的电催化在清洁能源储存和转移中发挥着关键作用。尽管如此，酸性和中性条件下的缓慢动力学和较差的耐久性严重阻碍了实际应用，例如与强大的质子交换膜兼容的电解槽和生物混合燃料的生产。在这里，我们报告了一种硼掺杂的二氧化钌电催化剂（B-RuO ₂），该催化剂通过一种简便的硼酸辅助策略制造，具有优异的酸性和中性 OER 性能。密度泛函理论计算和高级表征表明硼物种与 RuO _{2的氧原子形成异常的 BO 共价键}并暴露出完全配位桥的钌位点（Ru-bri 位点），这似乎是一个开关，将非活性的 Ru-bri 位点变为 OER 活性位点，从而导致更多暴露的活性位点、修饰的电子结构和优化的结合能中间体。_{因此，与商业RuO 2}在0.5 M 硫酸中相比，B-RuO _{2在10 mA/cm} ²下表现出200 mV 的超低过电势并保持优异的稳定性。此外，在中性电解质中也表现出优异的性能，超过了大多数先前报道的催化剂。