biostudies-literatureLu QNational Natural Science Foundation of ChinaHong Kong Scholar Programe2101438https://www.ebi.ac.uk/biostudies/studies/S-EPMC8529470biostudies-literatureUnknown8(20)Rational design of bifunctional efficient electrocatalysts for both oxygen reduction (ORR) and oxygen evolution reactions (OER) is desirable-while highly challenging-for development of rechargeable metal-air batteries. Herein, an efficient bifunctional electrocatalyst is designed and fabricated by encapsulating Co nanoparticles in interconnected N-doped hollow porous carbon nanofibers (designated as Co@N-C/PCNF) using an ultrafast high-temperature shock technology. Benefiting from the synergistic effect and intrinsic activity of the CoNC moiety, as well as porous structure of carbon nanofibers, the Co@N-C/PCNF composite shows high bifunctional electrocatalytic activities for both OER (289 mV at 10 mA cm^-2 ) and ORR (half-wave potential of 0.85 V). The CoNC moiety in the compAdvanced science (Weinheim, Baden-Wurttemberg, Germany)Encapsulating Cobalt Nanoparticles in Interconnected N-Doped Hollow Carbon Nanofibers with Enriched CoNC Moiety for Enhanced Oxygen Electrocatalysis in Zn-Air Batteries.PMC8529470XJ202000151804216Zheng XHu WRogach ALHan XChen YLu QWu HDeng YfalseEncapsulating Cobalt Nanoparticles in Interconnected N-Doped Hollow Carbon Nanofibers with Enriched CoNC Moiety for Enhanced Oxygen Electrocatalysis in Zn-Air Batteries.Rational design of bifunctional efficient electrocatalysts for both oxygen reduction (ORR) and oxygen evolution reactions (OER) is desirable-while highly challenging-for development of rechargeable metal-air batteries. Herein, an efficient bifunctional electrocatalyst is designed and fabricated by encapsulating Co nanoparticles in interconnected N-doped hollow porous carbon nanofibers (designated as Co@N-C/PCNF) using an ultrafast high-temperature shock technology. Benefiting from the synergistic effect and intrinsic activity of the CoNC moiety, as well as porous structure of carbon nanofibers, the Co@N-C/PCNF composite shows high bifunctional electrocatalytic activities for both OER (289 mV at 10 mA cm^-2 ) and ORR (half-wave potential of 0.85 V). The CoNC moiety in the comp2021-01-01T00:00:00Z2021 Oct2025-05-18T11:42:56.456Z2025-05-18T11:42:56.456ZS-EPMC85294703439851910.1002/advs.202101438