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- W3034626306 abstract "Developing high-efficient non-noble metal electrocatalysts toward oxygen reduction reaction (ORR), oxygen evolution reaction (OER), hydrogen evolution reaction (HER), water-splitting, and the zinc-air battery is essential but challenging. Zeolitic imidazole frameworks (ZIFs) are generally employed as ideal platforms for the design and fabrication of energy-related catalysts by exploiting their porous structure with high surface area and flexibility. This work presents the preparation of NiFe-bimetallic species decorated N-doped porous carbon composite ([email protected]) through pyrolyzing the NiFe-coordinated ZIF precursor. The obtained [email protected] shows a larger surface area and porous nanostructure comprising the active bimetallic species evenly distributed in the conductive carbon matrix. The nanocomposite demonstrates excellent trifunctional catalytic activity toward ORR, OER, and HER. For ORR, [email protected] offers a half-wave potential value of 0.87 V, which is positively shifted by 30 mV relative to that of Pt/C in 1 M KOH. [email protected] exhibits OER activity with superior overpotential, reaction kinetics, and durability to those of IrO2. It also demonstrates the desirable HER activity with a low overpotential of 150 mV at 10 mA/cm2 and excellent durability in an acidic electrolyte. Additionally, the water-splitting configuration and zinc-air battery assembled with [email protected] catalyst reveal superior performance to noble-metal catalysts. Such excellent electrocatalytic performance can be attributed to the distinct chemical composition of evenly distributed bimetallic active sites on highly conductive carbon sheets, and the porous nanostructure with large surface area and fast mass transfer." @default.
- W3034626306 created "2020-06-19" @default.
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- W3034626306 date "2020-11-01" @default.
- W3034626306 modified "2023-10-16" @default.
- W3034626306 title "NiFe-coordinated zeolitic imidazolate framework derived trifunctional electrocatalyst for overall water-splitting and zinc-air batteries" @default.
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- W3034626306 doi "https://doi.org/10.1016/j.jcis.2020.06.052" @default.
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