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Reversible anion intercalation into graphite from aluminum perchlorate “water‐in‐salt” electrolyte
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SYSNO ASEP 0556263 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Reversible anion intercalation into graphite from aluminum perchlorate “water‐in‐salt” electrolyte Author(s) Zafar, Zahid Ali (FZU-D) ORCID
Abbas, Ghulam (UFCH-W) ORCID
Šilhavík, Martin (FZU-D) ORCID
Knížek, Karel (FZU-D) RID, ORCID
Kaman, Ondřej (FZU-D) RID, ORCID
Farjana, Jaishmin Sonia (UFCH-W) ORCID, RID
Kumar, Prabhat (FZU-D) ORCID
Jiříček, Petr (FZU-D) RID, ORCID, SAI
Houdková, Jana (FZU-D) RID, ORCID
Frank, Otakar (UFCH-W) RID, ORCID
Červenka, Jiří (FZU-D) RID, ORCIDNumber of authors 11 Article number 139754 Source Title Electrochimica acta. - : Elsevier - ISSN 0013-4686
Roč. 404, Feb. (2022)Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords electrochemical potential window ; water-in-salt electrolyte ; aluminium perchlorate Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Subject RIV - cooperation J. Heyrovsky Institute of Physical Chemistry - Electrochemistry R&D Projects EF16_026/0008382 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-23986S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 ; UFCH-W - RVO:61388955 UT WOS 000778665600003 EID SCOPUS 85121899150 DOI 10.1016/j.electacta.2021.139754 Annotation We demonstrate a highly concentrated “water-in-salt” electrolyte of aluminum perchlorate that demonstrates a wide electrochemical stability window of 4.0 V. The “water-in-salt” electrolyte suppresses the dissociation of water at high potentials, facilitating a stable and reversible perchlorate (ClO4−) anion intercalation into the graphite with a Coulombic efficiency of over 95% for more than 2000 cycles. The structural and chemical changes of the anion-intercalated graphite are studied by Operando Raman, Operando X-ray diffraction, and X-ray photoelectron spectroscopy. Our study provides an insight into ClO4− anion intercalation into graphite in the supersaturated aluminum perchlorate “water-in-salt” electrolyte, demonstrating a suitable platform for future high-voltage aqueous energy storage systems. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2023 Electronic address https://doi.org/10.1016/j.electacta.2021.139754
Number of the records: 1