Cobalt phosphosulfide nanoparticles encapsulated into heteroatom-doped carbon as bifunctional electrocatalyst for Zn?air battery
نویسندگان
چکیده
CoPS nanoparticles encapsulated with S, P, N tri-doped carbon material (SPNC) were proposed as bifunctional electrocatalyst of oxygen evolution reaction (OER) and reduction (ORR) derived from zeolitic imidazolate framework-67. Density functional theory calculations consistently revealed that P element in CoPS@SPNC improves the electrical conductivity reduces OH? hydrogenation energy barrier on Co sites, thereby facilitating overall ORR/OER activities. A flexible Zn–air battery delivered an overpotential 0.49 ?V, efficiency above 80%, a discharge voltage 1.29 ?V at 2 ?mA ?cm ?2 for 80 ?h. Cobalt phosphosulfide (CoPS) is delivers low high stable
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ژورنال
عنوان ژورنال: Advanced powder materials
سال: 2022
ISSN: ['2772-834X']
DOI: https://doi.org/10.1016/j.apmate.2021.12.003