نتایج جستجو برای: bimetallic electrocatalyst for oxygen reduction
تعداد نتایج: 10560376 فیلتر نتایج به سال:
In this study, zeolitic imidazolate framework (ZIF-67) derived nano-porous carbon structures that were further hybridized with MnO2 tested for oxygen reduction reaction (ORR) as cathode material fuel cells. The prepared electrocatalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and Energy Dispersive Analysis (EDX). Cyclic voltammetry performed on the...
A major impediment to the commercialization of fuel cell technology is the low activity of platinum electrocatalyst used for oxygen reduction. Pt has been alloyed with transition metals like Ni, Co etc, which show higher activity, compared to pure Pt. However, Pt remains, an expensive metal of low abundance, and hence, finding a non-noble-metal alternative is of interest. The overall objective ...
Within the framework of circular economy, waste litchi's skins were upgraded and transformed into electrocatalysts for oxygen reduction reaction (ORR) hydrogen evolution (HER). The pyrolyzed, activated, then used as carbon support fabricating metal–nitrogen–carbons (M–N–Cs) which belong to a promising class platinum group metal-free electrocatalysts. activated char was functionalized with trans...
Here we present an exceptionally stable bioelectrocatalytic architecture for electrocatalytic oxygen reduction using a carbon nanotube electrode as the electron donor and a fungal enzyme as electrocatalyst. Controlling oxygen content in the electrolyte enables generation of a directly readable barcode from monitoring the enzyme response.
For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/...
We report a method for rapid screening of arrays of electrocatalyst candidates. The approach is based on simultaneous activation of the oxygen reduction reaction (ORR) and Ag electrodissolution at the cathodic and anodic poles, respectively, of bipolar electrodes (BPEs). Because the electrochemical activity of the two poles is directly coupled via the BPE, the extent of Ag electrodissolution is...
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