As an alternative for platinum‐based electrocatalysts, the development of non‐precious metal catalysts for oxygen reduction reaction (ORR) is highly desirable for fuel cell applications. In this paper, we propose a facile preparation method for a B, N‐codoped Cu–N/B–C nanomaterial as an efficient electrocatalyst for ORR in alkaline electrolytes. One‐step heat treatment of cyanamide/melamine, boric acid, and cupric chloride loaded on carbon black produces a Cu–N/B–C composite with a high specific surface area. The Cu–N/B–C‐800 composite pyrolyzed at 800 °C has the best ORR performance among all tested composites. Cu–N/B–C‐800 saw an ORR onset potential at 0.95 V and a half‐wave potential (E_1/2) at 0.84 V vs. reversible hydrogen electrode (RHE) in 0.1 M KOH solution, which is comparable to the commercial 20 wt% Pt/C catalyst. Moreover, Cu–N/B–C‐800 has a small negatively shifted E_1/2 value (−8.0 mV) under the accelerated‐durability test condition, demonstrating superior stability and higher tolerance to the methanol‐crossover effect compared with the Pt/C catalyst. Furthermore, the anion exchange membrane fuel cell (AEMFC) loaded with Cu–N/B–C‐800 as the cathode catalyst has an open cell voltage of 0.85 V and a peak power density of 80 mW/cm² at 60 °C without backpressure, which is in the list of optimal non‐precious metal catalysts for ORR in AEMFC.

中文翻译：

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B，N掺杂的Cu–N / B–C复合材料是在碱性介质中进行氧还原反应的高效电催化剂

作为铂基电催化剂的替代品，非常需要开发用于氧气还原反应（ORR）的非贵金属催化剂，以用于燃料电池应用。在本文中，我们提出了一种简便的制备方法，该方法制备了一种B，N共掺杂的Cu–N / B–C纳米材料，作为碱性电解液中ORR的有效电催化剂。炭黑中负载的氰胺/三聚氰胺，硼酸和氯化铜的一步热处理可制得比表面积高的Cu-N / B-C复合材料。在所有测试的复合材料中，在800°C的温度下热解的Cu–N / B–C–800复合材料具有最佳的ORR性能。Cu–N / B–C–800在0.95 V处观察到ORR起始电位，在半波处观察到电位（E _1/2）在0.84 V下与0.1 M KOH溶液中的可逆氢电极（RHE）相比，可与商用20 wt％Pt / C催化剂相比。此外，在加速耐久性测试条件下，Cu–N / B–C–800具有小的负移E _1/2值（−8.0 mV），与Pt相比，具有优异的稳定性和对甲醇交叉作用的耐受性/ C催化剂。此外，负载有Cu–N / B–C–800作为阴极催化剂的阴离子交换膜燃料电池（AEMFC）在60°C下的开孔电压为0.85 V，峰值功率密度为80 mW / cm ²，而没有背压，它是AEMFC中ORR的最佳非贵金属催化剂列表。