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. 2019 Dec 17;12(24):4238. doi: 10.3390/ma12244238

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© 2019 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 (http://creativecommons.org/licenses/by/4.0/).

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Polarization curves for an electrode made of carbon cloth alone (1,2,3) or carbon cloth carrying carbon black (4,5,6) in various 0.5 M aqueous electrolytes: (1,4) H₂SO₄; (2,5) Na₂SO₄; and (3,6) NaHCO₃. A Pt foil was used as counter and an Ag/AgCl as reference electrode.