In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2016-02, No. 38 ( 2016-09-01), p. 2741-2741
Abstract:
In recent, huge efforts have been conducted to relieve the global warming problem by the electrochemical conversion of CO 2 into useful chemicals. Particularly, it has been reported that the Ag and Au are highly active materials to produce the CO with high selectivity. However, the cost problem originated from use of noble metal catalysts limits their practical applications. In this study, the Ag and Au foam structures were electrochemically fabricated as a catalyst for CO 2 reduction to produce CO. As a first step, the Cu foam was prepared on Ti foil substrate by galvanostatic pulse deposition which consisted of low current for continuous Cu film and following high current for porous Cu. The pore size (22 ~ 56 μm) and wall thickness (14 ~ 42 μm) were controlled by concentration of Cu precursor and applied deposition currents. Then, the Cu foams were immersed in the electrolyte which contained noble metal precursors and additives, in order to minimize the noble metal usage as well as to increase the electrochemical surface area. The coverage and morphology of noble metals on the surface of Cu form were affected by the precursor and additives concentrations in displacement step. The catalytic activity of fabricated noble metal foams were examined for electrochemical CO 2 reduction. As a result, it was revealed that the CO Faradaic efficiency was significantly related to the morphology and composition of noble metal foams.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2016-02/38/2741
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2016
detail.hit.zdb_id:
2438749-6
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