• 文献标题:   Metallophthalocyanine-Based Polymer-Derived Co2P Nanoparticles Anchoring on Doped Graphene as High-Efficient Trifunctional Electrocatalyst for Zn-Air Batteries and Water Splitting
  • 文献类型:   Article
  • 作  者:   SHAO Q, LI Y, CUI X, LI TJ, WANG HG, LI YH, DUAN Q, SI ZJ
  • 作者关键词:   covalent organic polymer, metallophthalocyanine, co2p, trifunctional electrocatalyst, znair batterie, overall water splitting
  • 出版物名称:   ACS SUSTAINABLE CHEMISTRY ENGINEERING
  • ISSN:   2168-0485
  • 通讯作者地址:   Changchun Univ Sci Technol
  • 被引频次:   1
  • DOI:   10.1021/acssuschemeng.0c00852
  • 出版年:   2020

▎ 摘  要

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.