Conductivity-enhanced porous N/P co-doped metal-free carbon significantly enhances oxygen reduction kinetics for aqueous/flexible zinc-air batteries

A novel N/P co-doped porous carbon catalyst (NPPC-950) with high specific surface area was prepared by facile calcination method using ZIF-8 as precursor and red phosphorus as phosphorus source. The low content of P doping can significantly reduce the work function of the catalyst. The catalyst exhibits excellent oxygen reduction performance and has promising application prospect in Zinc-air batteries.