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Importance of Electrode Tailoring in the Coupling of Electrolysis with Renewable Energy
Author(s) -
GarcíaOrozco Violeta M.,
Millán Maria,
Lobato Justo,
FernándezMarchante Carmen M.,
RoaMorales Gabriela,
LinaresHernández Ivonne,
Natividad Reyna,
Rodrigo Manuel A.
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000550
Subject(s) - electrolysis , electrode , materials science , coating , renewable energy , electrochemistry , energy storage , chemical engineering , nanotechnology , chemistry , electrical engineering , electrolyte , physics , engineering , power (physics) , quantum mechanics
In this work, it has been evaluated how the performance of an electrolyzer, used to treat a clopyralid waste and directly powered without regulation by a battery, is influenced by the electrodes resistance. Electrolyzers were equipped with electrodes consisting of the same boron‐doped diamond (BDD) coating deposited on different substrate (Si, Ta and Nb). The results expose great differences despite using the same coating. Faster removal rates were attained with Ta‐ and Nb‐BDD electrodes. The amount of energy required to attain the same removal efficiency showed great differences. Up to 1.95 mg/Wh of pesticide were removed when using Si, compared to 2.14 mg/Wh removed with Ta. Furthermore, the quantity and strength of the generated oxidants were also quite different. 86.78 mmol of oxidants were needed to remove a gram of pesticide with Ta‐BDD and 30.57 mmol with Si‐BDD. Therefore, the electrode resistance is an important aspect that must be considered in order to get a suitable design of energy storage systems that allow the green photovoltaic powering of electrochemical technologies using conventional batteries as a booster to ensure a continuous operation.