Chronopotentiometric Analysis of the Anode Dissolution Process in Dimethyl Sulfone–Aluminum Chloride Electrolytic Solution

Autor:	Junichi Matsuda, Atsushi Okamoto, Haruo Akahoshi, Sayoko Shironita, Minoru Umeda
Rok vydání:	2023
Předmět:	Renewable Energy Sustainability and the Environment Materials Chemistry Electrochemistry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials
Zdroj:	Journal of The Electrochemical Society. 170:042503
ISSN:	1945-7111 0013-4651
Popis:	Toward the commercialization of aluminum electrodeposition, unveiling the anode dissolution process in a sustainable electrolyte is essential. Herein, to gain more insight into the anode dissolution process in dimethyl sulfone (DMSO2)–aluminum chloride (AlCl3) electrolyte solution, we performed chronopotentiometry measurements using Pt disk electrodes. In this system, the anode dissolution reaction exhibits two-wave behavior with a positive potential shift of +1.0 V. The Coulombic efficiency, reaction potential, and multiple reverse chronopotentiometry measurements show that the second-stage anode dissolution reaction is a three-electron-transfer process from Al0 and AlCl4 − to Al2Cl7 −. The transition of the anode dissolution reaction from the first to the second-stage occurs because Al (DMSO2)3 3+ is not stably formed owing to DMSO2 depletion near the electrode during the anode dissolution reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::454b35dba899bc2b8830d6570cd73c83 https://doi.org/10.1149/1945-7111/accba6 Zobrazit plný text záznamu