Nanostructured copper–cobalt based spinel [(Cu_0.30Co_0.70)Co₂O₄] was employed as an electrocatalyst in the hydrogen peroxide (H₂O₂) reduction reaction (HRR). Both nanoparticles and nanoneedles co-existed in the (Cu_0.30Co_0.70)Co₂O₄ spinel, which exhibited a high intrinsic electrical conductivity and surface-to-volume ratio, resulting therefore in a large electrochemically active surface area for the HRR. In addition, (Cu_0.30Co_0.70)Co₂O₄ showed an onset potential at approximately −0.14 V in the HRR, with a limiting current density of ∼104 mA/cm² at −0.43 V. The synthesised material followed the direct HRR pathway and exhibited good stability. In addition, the HRR activity of (Cu_0.30Co_0.70)Co₂O₄ was comparable to that of commercial Pt/C electrodes. The present results therefore demonstrate the significant potential of (Cu_0.30Co_0.70)Co₂O₄ for future applications in fuel cells as a cathode catalyst.

纳米结构的铜钴基尖晶石[（Cu _0.30 Co _0.70）Co ₂ O ₄ ]被用作过氧化氢（H ₂ O ₂）还原反应（HRR）中的电催化剂。纳米粒子和纳米针共存于（Cu _0.30 Co _0.70）Co ₂ O ₄尖晶石中，其表现出高的固有电导率和表面体积比，因此导致HRR具有较大的电化学活性表面积。另外，（Cu _0.30 Co _0.70）Co ₂ O ₄在HRR中显示出约-0.14 V的起始电位，在-0.43 V时的极限电流密度为〜104 mA / cm ^2。合成的材料遵循直接HRR路径并表现出良好的稳定性。另外，（Cu _0.30 Co _0.70）Co ₂ O ₄的HRR活性与市售Pt / C电极相当。因此，本发明结果证明了（Cu _0.30 Co _0.70）Co ₂ O ₄对于燃料电池作为阴极催化剂的未来应用具有巨大的潜力。