In order to enhance the corrosion resistance of carbon supported electrocatalyst under harsh operating conditions for Zn-air battery, a new type of 3D porous graphitic carbon catalysts are developed through catalytic graphitization of biomass waste combing with metal and nitrogen introduction. The obtained catalyst exhibits outstanding ORR (oxygen reduction reaction) performance by exhibiting same half-wave potential than that of commercial 20 wt% Pt/C in alkaline condition and higher current density, better stability, and better methanol tolerance. When assembled for rechargeable Zn-air batteries, the samples show a power density as high as 154 mW cm⁻² with an excellent cycling stability greater than 90 h/270 cycles. A series of control experiments provide a new insight into the coupling role of porosity and the degree of graphitization in ORR catalytic process, that is, the balance of graphitization and porosity contributes to both high activity and good stability.

为了提高碳负载电催化剂在锌-空气电池恶劣工作条件下的耐腐蚀性能，通过对生物质废物进行催化石墨化，结合金属和氮的引入，开发了一种新型的3D多孔石墨碳催化剂。获得的催化剂在碱性条件下表现出与商业 20 wt% Pt/C 相同的半波电位和更高的电流密度、更好的稳定性和更好的甲醇耐受性，从而表现出优异的 ORR（氧还原反应）性能。当组装用于可充电锌空气电池时，样品的功率密度高达 154 mW cm ^-2具有超过 90 小时/270 次循环的优异循环稳定性。一系列对照实验为 ORR 催化过程中孔隙率和石墨化程度的耦合作用提供了新的见解，即石墨化和孔隙率的平衡有助于高活性和良好的稳定性。