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Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Facile synthesis of ZnCo-ZIFs-derived ZnxCo3-xO4 hollow polyhedron for efficient oxygen evolution reduction
Lei Wang1, Tianjiao Meng1, Chunxia Chen1
1Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, Hebei University, 071002 Baoding, PR China.
Abstract:
The construction of highly active and stable non-noble metal electrocatalysts for oxygen evolution reaction (OER) is a crucial requirement for green energy utilization. Herein, we report a novel hybrid nanostructure of Zn/Co bimetallic oxide (ZnxCo3-xO4) hollow polyhedron through a pyrolysis-oxidation strategy derived from bimetallic Zn, Co-zeolitic imidazolate frameworks (ZnCo-ZIFs) rhombic polyhedral. Benefiting from the synergistic effects between highly active metal oxide and the unique polyhedron structure, the ZnxCo3-xO4 hollow polyhedron hybrid displayed outstanding electrocatalytic performances in alkaline media. When the ZnxCo3-xO4 polyhedron was employed as electrocatalysts for OER, a potential as low as 1.66 V (vs. RHE) was required to deliver the current density of 10 mA cm-2 in 1 M KOH, and ZnxCo3-xO4 still presented superior activity after continuously working for cyclic voltammetric scanning of 1000 cycles.
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