Hydrogen evolution reaction (HER) catalysts based on noble metals traditionally suffered from high cost, low activity, and poor stability. Metal-free catalysts originating from heteroatom-doped carbon materials have been proposed to address these problems, in which the doping configurations and electronic structures are critical for modulating the electrocatalytic activity. Herein, we reported a sequential approach for the co-doping of B and N atoms into graphdiyne (GDY). We noticed that the configurations of heteroatoms are strongly related to the doping process, and the subsequent HER test shows that a certain sp-N can decrease the overpotential, and further introduction of B atoms can continuously enhance the current density owing to the synergistic effect of chemical and electronic couplings on proton adsorption/reduction kinetics. This work provides a deeper understanding of developing dual heteroatom doped non-metallic catalysts.

中文翻译：

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通过 sp-N 和 B 共掺杂促进少层石墨炔上的析氢反应

基于贵金属的析氢反应（HER）催化剂传统上存在成本高、活性低和稳定性差的问题。已经提出源自杂原子掺杂碳材料的无金属催化剂来解决这些问题，其中掺杂配置和电子结构对于调节电催化活性至关重要。在此，我们报道了一种将 B 和 N 原子共掺杂到石墨炔 (GDY) 中的顺序方法。我们注意到杂原子的构型与掺杂过程密切相关，随后的 HER 测试表明，一定的 sp-N 可以降低过电位，并且由于 B 原子的协同作用，进一步引入 B 原子可以不断提高电流密度。质子吸附/还原动力学的化学和电子耦合。