Developing cost-effective, but efficient and stable trifunctional catalysts synchronously for oxygen reduction (ORR), oxygen evolution (OER) and hydrogen evolution reaction (HER) under same electrolytes is essential for the real application of renewable energy systems. Herein, we report the synthesis of a cheap and high-efficiency electro-catalyst based on Co₉S₈ nanoparticles decorated with Co-N-C sites well anchored to metal-porous organic polymer (MPOP)-derived N, S-codoped carbon (Co-IM-POP-1000), which exhibits pronounced trifunctional electrocatalytic activity for ORR, OER and HER, simultaneously, in alkaline media. Consequently, breathing Zn–air batteries (ZABs) employing Co-IM-POP-1000 as the sole catalysts present prominent performance, i. e., the charge/discharge voltage, power and energy density, specific capacity, rate performance as well as the lifetime, outperforming that of Pt/C 20% + RuO₂ counterparts, which could be regenerated and maintained at the same performance level for subsequent runs by simply replenishing the Zn anode and electrolyte. An alkaline water splitting system using the IM-POP-Co-1000 as catalyst for overall water splitting affords a cell voltage as low as 1.60 V at 10 mA cm⁻². A self-driven water splitting system powered by the home-made ZABs is demonstrated using IM-POP-Co-1000 as the sole catalyst in 0.1 M KOH, giving a high H₂ evolution rate of 0.244 mmol h⁻¹. These novel metal-POPs provides an effective strategy to prepare high-performance POPs for special applications. Therefore, this study shows a promising approach for the utilization of low cost and massive producible POPs as precursor for the preparation of stable and efficient trifunctional electro-catalyst toward clear energy applications.

在相同电解质下同时开发具有成本效益、高效且稳定的三功能催化剂用于氧还原（ORR）、析氧（OER）和析氢反应（HER）对于可再生能源系统的实际应用至关重要。_{在此，我们报道了一种基于 Co 9} S ₈纳米粒子的廉价高效电催化剂的合成，该纳米粒子装饰有 Co-NC 位点，很好地锚定在金属多孔有机聚合物 (MPOP) 衍生的 N、S 共掺杂碳 (Co -IM-POP-1000)，在碱性介质中同时对 ORR、OER 和 HER 表现出显着的三功能电催化活性。因此，采用 Co-IM-POP-1000 作为唯一催化剂的呼吸型锌空气电池（ZABs）表现出显着的性能，即充放电电压、功率和能量密度、比容量、倍率性能和寿命，优于 Pt/C 20% + RuO ₂同类产品，可再生并在后续运行中保持相同的性能水平简单地补充锌阳极和电解质。^{使用 IM-POP-Co-1000 作为整体水分解催化剂的碱性水分解系统在 10 mA cm -2}下提供低至 1.60 V 的电池电压。使用 IM-POP-Co-1000 作为 0.1 M KOH 中的唯一催化剂，展示了由自制 ZAB 驱动的自驱动水分解系统，产生0.244 mmol h ^{-1的高 H} _{2释放速率}. 这些新型金属持久性有机污染物为制备用于特殊应用的高性能持久性有机污染物提供了一种有效的策略。因此，本研究展示了一种利用低成本和可大量生产的持久性有机污染物作为前驱体制备稳定、高效的三功能电催化剂以实现清洁能源应用的有前景的方法。