Abstract Replacement of the most recognized Pt with relatively cheap, active, highly stable and readily-available electrocatalysts for hydrogen evolution reaction predicts limitless potential for clean energy devices, nevertheless the fabrications of outstanding HER catalysts with such huge performances remain a great challenge. In this work, we report on the synthesis of a robust and highly stable B-doped carbon enclosed Ni nanoparticles through the facile one-pot synthetic procedure. The as-synthesized Ni@B-C 500 °C displays an outstanding HER performance as shown by low overpotential of 176 mV to deliver a current density of 10 mA cm−2 in an alkaline medium. Such electrocatalytic performance of the as-fabricated Ni@B-C 500 °C can be principally ascribed to the faster electron transfer between interfaces of the working electrode-catalyst ink-electrolyte, the active sites of the electrocatalyst and the synergistic relationship between the nickel metal and boron. Thus, Ni@B-C 500 °C can deliver highly effective and stable performances for HER in alkaline electrolyzers.

中文翻译：

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B掺杂碳包覆Ni纳米颗粒：一种用于析氢反应的稳健、稳定和高效的电催化剂

摘要 用相对便宜、活性、高度稳定且易于获得的析氢反应电催化剂替代最受认可的 Pt 预示着清洁能源设备的无限潜力，但具有如此巨大性能的出色 HER 催化剂的制造仍然是一个巨大的挑战。在这项工作中，我们报告了通过简便的一锅合成程序合成了一种坚固且高度稳定的 B 掺杂碳包覆的 Ni 纳米颗粒。合成的 Ni@BC 500 °C 显示出出色的 HER 性能，如在碱性介质中提供 10 mA cm-2 电流密度的 176 mV 低过电位所示。制备好的 Ni@BC 500 °C 的这种电催化性能主要归因于工作电极-催化剂墨水-电解质界面之间更快的电子转移、电催化剂的活性位点以及镍金属和金属镍之间的协同关系。硼。因此，Ni@BC 500 °C 可以为碱性电解槽中的 HER 提供高效且稳定的性能。