Covalent organic polymers (COPs) provide an interesting platform for constructing the low-cost and highly efficient multifunctional electrocatalysts in view of their tailorable structures and properties. Herein, Co-phthalocyanine-based COPs (CoPc-COPs) are constructed using cobalt tetraaminophthalocyanine (CoPc(NH₂)₄) as the organic building unit and phosphonitrilic chloride trimer (Cl₆N₃P₃) as the linker group, which serve as the self-carrier enriched with Co, P, N, and C to derive Co₂P nanoparticles anchored on the N, P codoped graphene after carbonization treatment. Benefiting from the unique construction and the metallic property confirmed by density functional theory (DFT) calculations, the Co₂P/NPG displays high-efficient trifunctional electrocatalytic performance toward oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), including excellent oxygen electrocatalytic activity (overpotential of 0.32 V at 10 mA cm^–2 for OER, half-wave potential of 0.81 V for ORR) and outstanding stability (98% over 12 h for OER, 89% over 17 h for ORR). Impressively, rechargeable Zn-air batteries (ZABs) that employed Co₂P/NPG as the cathode electro-catalyst display a peak power of up to 103.5 mW cm^–2 along with a good cycle stability after 55 h. Moreover, the constructed ZABs can be used to power the overall water splitting. Therefore, function-oriented design of metallophthalocyanine-based COPs provides new ways to strategically construct multifunctional electrocatalysts for the wider integrated green energy system.

中文翻译：

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锚固在掺杂石墨烯上的金属酞菁基聚合物衍生的Co ₂ P纳米颗粒作为高效的锌空气电池和水分解三功能电催化剂

鉴于其可定制的结构和性能，共价有机聚合物（COP）为构建低成本和高效的多功能电催化剂提供了有趣的平台。这里，基于钴酞菁的COP（CoPc-COPs）是使用四氨基酞菁钴（CoPc（NH ₂）₄）作为有机结构单元和磷腈氯化物三聚体（Cl ₆ N ₃ P ₃）构建的，它们用作连接基团。作为富含Co，P，N和C的自载子以生成Co ₂碳化处理后，P纳米颗粒锚固在N，P共掺杂的石墨烯上。得益于密度泛函理论（DFT）计算所证实的独特结构和金属性能，Co ₂ P / NPG对氧还原反应（ORR），氧释放反应（OER）和氢释放具有高效的三功能电催化性能。反应（HER），包括出色的氧电催化活性（OER在10 mA cm ^–2处的过电势为0.32 V，ORR的半波电势为0.81 V）和出色的稳定性（OER的12小时内为98％，17倍以上为89％） h（代表ORR）。令人印象深刻的是，采用Co ₂ P / NPG作为阴极电催化剂的可再充电锌空气电池（ZAB）的峰值功率高达103.5 mW cm^–2以及55小时后的良好循环稳定性。此外，构建的ZAB可用于为整个水分解提供动力。因此，基于金属酞菁的COP的功能导向设计为策略性地构建多功能电催化剂提供了新的途径，从而为更广泛的集成绿色能源系统提供了动力。