Au–MIL Nanocomposites with Enhanced Borohydride Oxidation Kinetics for Potential Use in Direct Liquid Fuel Cells
Year: 2025
Type: article
Abstract: A series of metal–organic framework-based materials of the MIL-101 family was prepared for potential application as anodic electrocatalysts in the direct borohydride fuel cell. The MIL-101-based materials were tested for borohydride oxidation reaction using cyclic voltammetry and chronoamperometry in alkaline media, with Au@MIL-101-NH2 showing high responsiveness. The obtained data allow for the determination of kinetic parameters that characterize the borohydride oxidation on the prepared electrocatalysts. The activation energy for borohydride oxidation using an Au@MIL-101-NH2 electrocatalyst was as low as 13.6 kJ mol−1 with a reaction order of 0.4. The anodic charge transfer coefficient was 0.85, and the number of transferred electrons was 7.97, matching the theoretical maximum value of 8 electrons transferred during the borohydride oxidation reaction. The promising performance of Au@MIL-101-NH2 suggests its potential application as an anode for direct borohydride fuel cells.
Source: Energies
DOI: 10.3390/en18174503
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,137
Awards: Valorozation of glycerol to value-added products by novel gold@metal-organic framework catalysts, Centro de Física e Engenharia de Materiais Avançados, G4971484151, G5677438668, Development of membranes and electrodes for direct liquid fuel cells with enhanced performance, G8576945661, G8629068988
OpenAlex ID: W4413619731