Method of Measuring the Diffusion Resistance of the Structures of Porous Electrode Materials Based on a Proton-Conducting Ionomer and Carbon Nanomaterials

Journal Article · Fri Dec 15 00:00:00 EST 2017 · Technical Physics

DOI:https://doi.org/10.1134/S106378421712009X· OSTI ID:22783953

Glebova, N. V.; Krasnova, A. O.; Tomasov, A. A.; Zelenina, N. K.

A method has been developed for measuring the oxygen mass-transport resistance of porous electrodes based on micro- and nanostructures of a Nafion proton-conducting ionomer, Pt/C, and carbon nanowires with the ultrahigh porosity. The method suggests measuring the limit oxygen electroreduction current density at the controlled oxygen flow through an electrochemical system and calculating the oxygen mass transport resistance using the ratio based on the Fick’s law. The method has been used to study the mass-transport loss of a membrane-electrode assembly electrode and electrode material based on a rotating disk electrode and can be applied in the development of new electrodes.

• OSTI ID: 22783953
• Journal Information: Technical Physics, Vol. 62, Issue 12; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7842
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON
CURRENT DENSITY
DIFFUSION
ELECTROCHEMISTRY
ELECTRODES
NANOMATERIALS
NANOWIRES
OXYGEN
POROSITY
POROUS MATERIALS
PROTONS