In this study, we have fabricated the Co₃(PO₄)₂ nanoparticles and Co₃(PO₄)₂-NC doped in N doped carbon nanocomposite. The fabricated nanocomposite was characterized successfully using several analytical techniques. The fabricated nanocomposite was used as electrocatalyst for water splitting, the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in 1.0 M KOH solution. The fabricated nanocomposite shows highly porous nature with high surface area about to 372.32 m²/g. The catalytic results show, the lower limiting overpotential during the ORR (η_lim = 0.33 V) and more positive half-wave potential activity than that of commercial platinum on carbon (Pt/C) catalyst. Moreover, the Co₃(PO₄)₂-NC exhibit excellent catalytic activity toward OER, with an overpotential of 350 mV at 10 mAcm² in 1.0 M KOH solution and a relatively low Tafel slope of 60.7 mV dec. In addition, the fabricated catalyst possesses excellent reusability, long term stability with fast electron transfer during the catalytic reactions. These outcomes revealed that the fabricated nanocomposites can be used as low-cost, efficient catalyst for water splitting ORR and OER in metal-air batteries and fuel cells.

在这项研究中，我们制备了掺杂在N掺杂碳纳米复合材料中的Co ₃（PO ₄）₂纳米颗粒和Co ₃（PO ₄）₂ -NC掺杂。使用多种分析技术成功表征了制备的纳米复合材料。制备的纳米复合材料用作电催化剂，用于在1.0 M KOH溶液中进行水分解，氧释放反应（OER）和氧还原反应（ORR）。所制备的纳米复合材料显示出高度多孔的性质，具有约372.32m ² / g的高表面积。催化结果表明，ORR（_ηlim = 0.33 V），并且比商用铂/碳（Pt / C）催化剂具有更高的正半波电势。此外，Co ₃（PO ₄）₂ -NC对OER表现出优异的催化活性，在1.0 M KOH溶液中在10 mAcm ^2下具有350 mV的过电势和60.7 mV dec的相对较低的Tafel斜率。另外，所制备的催化剂具有优异的可重复使用性，长期稳定性以及在催化反应过程中的快速电子转移。这些结果表明，所制备的纳米复合材料可以用作低成本，高效的催化剂，用于金属-空气电池和燃料电池中的水分解ORR和OER。