The use of platinum group metals (PGMs) as the catalysts and the requirement of high purity H₂ are the two aspects resulting in the high cost of the polymer electrolyte membrane fuel cells. Herein, we report that nitrogen-doped carbon encapsulated nickel nanoparticles (Ni@NC) as stable hydrogen oxidation reaction catalysts, which allows the use of PGM-free anode catalysts durably and feeding crude hydrogen. The hydroxide exchange membrane fuel cell using Ni@NC as the anode catalyst illustrates steady performance for more than 200 h, while the Ni/C cell fails within 7 h. The current density loss is less than 10% by feeding H₂ with 100 ppm of CO for 24 h, which is much better than those using Pt/C or Ni/C. The anti-poisoning feature is attributed to the block effect of the NC shell, while the defects allow the permeation of H₂, thus catalyzing the hydrogen oxidation reaction.

使用铂族金属(PGMs)作为催化剂和要求高纯度H ₂是导致聚合物电解质膜燃料电池成本高的两个方面。在此，我们报道了氮掺杂碳包裹的镍纳米粒子 (Ni@NC) 作为稳定的氢氧化反应催化剂，这允许持久使用不含 PGM 的阳极催化剂并供给粗氢。使用 Ni@NC 作为阳极催化剂的氢氧化物交换膜燃料电池表现出稳定的性能超过 200 小时，而 Ni/C 电池在 7 小时内失效。_{通入H 2}电流密度损失小于10%用 100 ppm 的 CO 处理 24 小时，这比使用 Pt/C 或 Ni/C 的要好得多。抗毒特性归因于NC壳的阻滞作用，而缺陷则允许H ₂渗透，从而催化氢氧化反应。