The development of a low-cost and high-stability catalyst with Platinum-like electrocatalytic performance is significant for the hydrogen evolution reaction (HER) from water electrolysis. Herein, ultrafine ruthenium nanoparticles encapsulated in Nitrogen(N)-doped carbon anchored on graphene sheets are fabricated and utilized as HER electrocatalysts. Characterization results verify that the strong interaction between the N-doped carbon shell and the Ru core leads to charge redistributions, promoting Ru in a more active electron-rich state. Therefore, the catalyst exhibits excellent activity over a wide pH range, which only needs 16, 23 and 72 mV to drive a current density of 10 mA cm⁻² in alkaline, acidic and neutral electrolytes, respectively. In addition, the N-doped carbon shell protects the Ru nanoparticles from aggregation and decomposition in the extreme electrolyte, contributing to the excellent stability.

开发具有类铂电催化性能的低成本、高稳定性催化剂对于水电解制氢反应（HER）具有重要意义。在此，制备了封装在锚定在石墨烯片上的氮（N）掺杂碳中的超细钌纳米颗粒，并将其用作 HER 电催化剂。表征结果证实，N掺杂碳壳和Ru核之间的强相互作用导致电荷重新分布，促使Ru处于更活跃的富电子状态。因此，该催化剂在较宽的 pH 范围内表现出优异的活性，仅需要 16、23 和 72 mV 即可在碱性、酸性和中性电解质中分别驱动 10 mA cm ^{-2的电流密度。}此外，N掺杂的碳壳保护钌纳米粒子在极端电解质中不聚集和分解，有助于获得优异的稳定性。