SiO2-templated ferrocenyl porous organic polymer gel derived porous Carbon/Fe2C nanohybrids with interpenetrating macropores as oxygen reduction electrocatalyst for Zn-air batteries

Porous organic polymers (POPs) together with related derivatives have geared significant attention due to their great applications potential in varieties of fields. Whereas, it remains challenging to control the morphology of POPs or corresponding derivate. Herein, we report a macro/meso/microporous Fe/N/P-codoped hollow catalyst (HFCP-850) prepared via the pyrolysis and chemical etching of a POP-SiO2 gel composites (HFCP-POP) which was...