The pony-size Cu nanoparticles confined in mesoporous C-N were directly synthesized by chemical vapor deposition (CVD) method using floating Cu atoms. The mesoporous C-N with high surface area not only stabilized the dispersed Cu nanoparticles but also improved the electrocatalytic activity of the Cu by changing the electronic structure of Cu. Combining the strong interaction between Cu nanoparticles and mesoporous C-N and the quantum size effect of Cu nanoparticles, the obtained Cu@C-N exhibited the catalytic activity superior to the reported Cu nanoparticles-based catalysts and commercial Pt/C-JM catalyst with a half-wave potential of 0.84 V for oxygen reduction reaction (ORR) in alkaline media. Additionally, it also showed remarkable catalytic stability and excellent methanol-tolerant property during the ORR process.

局限在中孔CN中的小马尺寸的Cu纳米颗粒是使用浮动Cu原子通过化学气相沉积（CVD）方法直接合成的。具有高表面积的中孔CN不仅稳定了分散的Cu纳米颗粒，而且通过改变Cu的电子结构而提高了Cu的电催化活性。结合Cu纳米粒子和中孔CN之间的强相互作用和Cu纳米粒子的量子尺寸效应，所获得的Cu @ CN表现出的催化活性优于报道的基于Cu纳米粒子的催化剂和市售Pt / C-JM催化剂的半波碱性介质中氧还原反应（ORR）的电位为0.84V。此外，它在ORR过程中还表现出卓越的催化稳定性和优异的耐甲醇性。