Abstract
CoPS nanoparticles encapsulated with S, P, N tri-doped carbon material (SPNC) were proposed as bifunctional electrocatalyst of oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) derived from zeolitic imidazolate framework-67. Density functional theory calculations consistently revealed that P element in CoPS@SPNC improves the electrical conductivity and reduces OH∗ hydrogenation energy barrier on Co sites, thereby facilitating the overall ORR/OER activities. A flexible Zn–air battery with CoPS@SPNC delivered an overpotential of 0.49 V, an energy efficiency above 80%, and a discharge voltage of 1.29 V at 2 mA cm−2 for 80 h.
Original language | English |
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Article number | 100027 |
Journal | Advanced Powder Materials |
Volume | 1 |
Issue number | 3 |
Early online date | 23 Dec 2021 |
DOIs | |
Publication status | Published - Jul 2022 |
Keywords
- Bifunctional electrocatalyst
- Heteroatom doping
- Zeolitic imidazolate framework
- Zn–air battery