Topic
Nafion
About: Nafion is a research topic. Over the lifetime, 9110 publications have been published within this topic receiving 320865 citations.
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TL;DR: In this paper, the copper/Nafion electrodes were used for the gas phase electrochemical reduction of CO2 to hydrocarbon products, including CH4 and C2H4.
Abstract: The construction of copper/Nafion electrodes (solid polymer electrolyte structures) by an electroless plating method is described. These electrodes were used for the gas phase electrochemical reduction of CO2 to hydrocarbon products, including CH4 and C2H4. The faradaic efficiencies of the electrodes under ambient conditions with a counter solution of 1 mM H2SO4 at a potential of −2.00 V vs. SCE reached a steady-state value of about 20% after 30 min of electrolysis. This corresponded to a rate of total hydrocarbon production of approximately 9.8×10−7 mole h−1 cm−2. Increasing the potential of the electrode to more negative potentials, or increasing the proton concentration of the counter solution, caused a decrease in the faradaic efficiencies due to a relative increase in the rate of proton reduction vs. that of CO2 reduction. If the proton concentration of the counter solution was decreased to an alkaline pH, hydrocarbon production quickly ceased because of proton starvation.
101 citations
TL;DR: In this paper, a series of parameters affecting the catalytic layer microstructure in polymer exchange fuel cell electrodes have been evaluated, and the authors showed that the solvent viscosity and its dielectric constant are two important factors to control for catalytic ink preparation.
101 citations
TL;DR: In this paper, molecular dynamics computer simulations of water/Nafion mixtures using an all-atom model were performed as a function of temperature and humidity to investigate processes and structures on the picosecond to nanosecond time scale in the nano-phase-separated material with its technological relevance for low temperature fuel cells.
101 citations
TL;DR: In this article, the authors carried out systematic measurements of water uptake, proton conductivity and water self-diffusion coefficient in commercial Nafion N115 and NRE212 membranes.
101 citations
TL;DR: In this paper, Nafion membranes were modified by the in situ electrodeposition of polypyrrole inside the membrane pores and on the anode side only, in order to prevent the cross-over of methanol in the direct methanoline fuel cell (DMFC).
101 citations