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- W2796121431 abstract "Identification of catalytic sites for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in carbon materials remains a great challenge. Here, we construct a pyridinic-N-dominated doped graphene with abundant vacancy defects. The optimized sample with an ultrahigh pore volume (3.43 cm3 g–1) exhibits unprecedented ORR activity with a half-wave potential of 0.85 V in alkaline. For the first time, density functional theory results indicate that the quadri-pyridinic N-doped carbon site synergized with a vacancy defect is the active site, which presents the lowest overpotential of 0.28 V for ORR and 0.28 V for OER. The primary Zn–air batteries display a maximum power density of 115.2 mW cm–2 and an energy density as high as 872.3 Wh kg–1. The rechargeable Zn–air batteries illustrate a low discharge–charge overpotential and high stability (>78 h). This work provides new insight into the correlation between the N configuration synergized with a vacancy defect in electrocatalysis." @default.
- W2796121431 created "2018-04-13" @default.
- W2796121431 creator A5000029372 @default.
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- W2796121431 creator A5088326586 @default.
- W2796121431 date "2018-04-05" @default.
- W2796121431 modified "2023-10-06" @default.
- W2796121431 title "Pyridinic-N-Dominated Doped Defective Graphene as a Superior Oxygen Electrocatalyst for Ultrahigh-Energy-Density Zn–Air Batteries" @default.
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- W2796121431 doi "https://doi.org/10.1021/acsenergylett.8b00303" @default.
- W2796121431 hasPublicationYear "2018" @default.
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