Temperature-Dependent Conductivity of Nickel-Based Anion-Exchange Membrane Fuel Cell
DOI:
https://doi.org/10.2025/e6dxsm20Abstract
In this letter, a simple and low-cost design of a nickel-based anion-exchange membrane fuel cell is proposed. The temperature-dependent conductivity of a nickel-based anion-exchange membrane fuel cell is studied. The adsorption of CO2 on the membrane surface is also determined as a function of operation temperature. Results showed that the conductivity of the membrane reasonably depends on its type, structural purity, and temperature. The hydroxide (OH-) ions showed stable and high conductivity up to 305 mS/cm after 20 hours of operation, whereas the HCO3- ions showed unstable and low conductivity due to their larger size. The adsorption of CO2 on the membrane surface was reduced at elevated temperatures, which limits the conversion of OH- ions into HCO3- ions as well as enhances the overall performance of the cell.
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