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Article: Reversibility of a High-Voltage, Cl--Regulated, Aqueous Mg Metal Battery Enabled by a Water-in-Salt Electrolyte
Title | Reversibility of a High-Voltage, Cl--Regulated, Aqueous Mg Metal Battery Enabled by a Water-in-Salt Electrolyte |
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Authors | |
Issue Date | 21-Jul-2022 |
Publisher | American Chemical Society |
Citation | ACS Energy Letters, 2022, v. 7, n. 8, p. 2657-2666 How to Cite? |
Abstract | Rechargeable Mg batteries are a promising post-Li-ion battery technology, but their development has been critically hampered by the passivating nature of Mg, particularly in aqueous solutions. Due to a quick dismissal of its reversibility, the use of Mg anodes in aqueous electrolytes has been overlooked, and most researchers focus on 1 nonaqueous systems instead. In this work, reversible, aqueous Mg battery chemistry has been realized for the first time, via the conversion of its impermeable passivation film to a conductive metallic oxide complex, facilitated by Cl- regulation and the suppression of the hydrogen evolution reaction using a MgCl2 water-in-salt (WIS) electrolyte. When coupled with copper hexacyanoferrate as the cathode, the full battery exhibits an impressive voltage plateau of 2.4-2.0 V and a stability of over 700 cycles with a Coulombic efficiency of up to 99% at 0.5 A g(-1). Mg dissolution and deposition have proven reversible in the aqueous MgCl2 WIS electrolyte. |
Persistent Identifier | http://hdl.handle.net/10722/328516 |
ISSN | 2021 Impact Factor: 23.991 2020 SCImago Journal Rankings: 8.632 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Leong, KW | - |
dc.contributor.author | Pan, WD | - |
dc.contributor.author | Wang, YF | - |
dc.contributor.author | Luo, SJ | - |
dc.contributor.author | Zhao, XL | - |
dc.contributor.author | Leung, DYC | - |
dc.date.accessioned | 2023-06-28T04:45:39Z | - |
dc.date.available | 2023-06-28T04:45:39Z | - |
dc.date.issued | 2022-07-21 | - |
dc.identifier.citation | ACS Energy Letters, 2022, v. 7, n. 8, p. 2657-2666 | - |
dc.identifier.issn | 2380-8195 | - |
dc.identifier.uri | http://hdl.handle.net/10722/328516 | - |
dc.description.abstract | Rechargeable Mg batteries are a promising post-Li-ion battery technology, but their development has been critically hampered by the passivating nature of Mg, particularly in aqueous solutions. Due to a quick dismissal of its reversibility, the use of Mg anodes in aqueous electrolytes has been overlooked, and most researchers focus on 1 nonaqueous systems instead. In this work, reversible, aqueous Mg battery chemistry has been realized for the first time, via the conversion of its impermeable passivation film to a conductive metallic oxide complex, facilitated by Cl- regulation and the suppression of the hydrogen evolution reaction using a MgCl2 water-in-salt (WIS) electrolyte. When coupled with copper hexacyanoferrate as the cathode, the full battery exhibits an impressive voltage plateau of 2.4-2.0 V and a stability of over 700 cycles with a Coulombic efficiency of up to 99% at 0.5 A g(-1). Mg dissolution and deposition have proven reversible in the aqueous MgCl2 WIS electrolyte. | - |
dc.language | eng | - |
dc.publisher | American Chemical Society | - |
dc.relation.ispartof | ACS Energy Letters | - |
dc.title | Reversibility of a High-Voltage, Cl--Regulated, Aqueous Mg Metal Battery Enabled by a Water-in-Salt Electrolyte | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acsenergylett.2c01255 | - |
dc.identifier.volume | 7 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | 2657 | - |
dc.identifier.epage | 2666 | - |
dc.identifier.eissn | 2380-8195 | - |
dc.identifier.isi | WOS:000836909000001 | - |
dc.publisher.place | WASHINGTON | - |
dc.identifier.issnl | 2380-8195 | - |