The development of cost-effective electrocatalyst with high activity and durability for oxygen reduction reaction (ORR) in acidic condition is a key step towards the wide-spread application of proton exchange membrane fuel cells (PEMFCs), while the high cost of benchmark Pt/C is one of the main inhibiting factors. Here, we report a new composite catalyst by adopting electrocatalytically active Co,N-modified carbon prepared from a cost-effective method with mass production capability. The as-prepared Pt/(Co-N)@C catalyst shows a favourable mass activity of 0.227 A mg_Pt⁻¹ as well as superior durability with only 15.4% of performance loss after 30,000 cycles, making it a highly promising ORR electrocatalyst for practical PEMFCs.

在酸性条件下，开发具有高活性和耐久性的氧还原反应（ORR）的高性价比电催化剂，是质子交换膜燃料电池（PEMFC）广泛应用的关键一步，而基准Pt / C是主要的抑制因素之一。在这里，我们报告了一种新的复合催化剂，它采用了具有成本效益的，具有批量生产能力的电催化活性Co，N-改性碳。所制得的Pt /（Co-N）@C催化剂显示出0.227 A mg _Pt ^-1的良好质量活性以及优异的耐久性，在30,000次循环后的性能损失仅为15.4％，这使其成为极有希望的ORR电催化剂实用的PEMFC。