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. 2022 Jan 24;27(3):761. doi: 10.3390/molecules27030761

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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The AC impedance spectrum in Nyquist form for HER at an overpotential of 100 mV at the (a) CFE/CB/Pt electrode and (b) CFE/SWCNT/Pt electrode. (c) The power density and galvanostatic polarization data at different temperatures of an MEA prepared using a CFE/SWCNT/Pt anode and a CFE/CB/Pt cathode, and (d) the power density and galvanostatic polarization data at different temperatures of an MEA prepared using a CFE/SWCNT/Pt anode and cathode. Reprinted with permission from [112]. The American Chemical Society, Washington, DC, USA, 2005.