Designing efficient electrocatalysts for efficient hydrogen evolution is extremely desired but challenging. Herein, we report a facile MOF-assisted strategy to synthesize the hierarchical hollow spherical NiRu-C nanohybrid with closely packed rod-like bulges on the surface. Benefited from the more exposed active sites of NiRu-C nanohybrid and the efficient electron/mass transport in its unique hierarchical hollow spherical nanostructure, the optimized nanohybrid showed excellent performance for alkaline hydrogen evolution with ultralow overpotentials, which are much superior to those of Pt/C and the overwhelming majority of reported electrocatalysts. The interpretation of the reaction mechanism was further discussed with DFT calculations. Our research may provide a guidance for the development of advanced electrocatalysts with controlled morphology and excellent performance for future energy applications.

中文翻译：

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MOF 衍生的分级空心 NiRu-C 纳米杂化物用于高效析氢反应 (c)

设计用于高效析氢的高效电催化剂是非常需要但具有挑战性的。在这里，我们报告了一种简单的 MOF 辅助策略来合成分层空心球形 NiRu-C 纳米杂化物，在表面上具有紧密堆积的棒状凸起。受益于 NiRu-C 纳米杂化物更多暴露的活性位点以及其独特的分级空心球形纳米结构中有效的电子/质量传输，优化后的纳米杂化物在超低过电位下表现出优异的碱性析氢性能，远优于 Pt/ C和绝大多数报道的电催化剂。通过 DFT 计算进一步讨论了反应机理的解释。