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Jichao Wang,Jichao Wang,Cheng Chen,Philippe M. Heynderickx,Soumyajit Roy,Francis Verpoort 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.105 No.-
An efficient and facile approach to synthesize a bi-functional electrocatalyst via combining carbon foamwith cobalt-centered zeolitic imidazolate framework (ZIF-67) is reported. The carbon foam was synthesizedvia dehydration of sugar utilizing zinc nitrate, forming Co3ZnC in the carbon matrix. To obtain Cohybridized and Co particles covered with carbon nanotubes embedded in a carbon matrix (Co-Zn-CNTs), physical mixing of both defines the critical point after pyrolysis. Higher content of N-related speciesand transition metal species in polyvalent states and well-grown multi-wall carbon nanotubes forcharge transfer are achieved after the pyrolysis process. The obtained Co-Zn-CNTs catalyst was employedas cathode and anode for overall water splitting (HER and OER) and showed excellent performances. Thisdevelopment offers a low-cost and straightforward strategy to synthesize catalyst material for large-scalefuel cells and water splitting technologies. This development affords a precise method for effectivelyimproving the electrocatalyst performance derived from the ZIF-67 precursor.