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A Bi-based artificial interphase to achieve ultra-long cycling life of Al-metal anode in non-aqueous electrolyte

Kumar, Sonal (author)
Rama, Prasad (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
Lieu, Wei Ying (author)
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Zhang, Chang (author)
Busayaporn, Wutthikrai (author)
Chinnadurai, Deviprasath (author)
Yang, Gaoliang (author)
Xing, Zhenxiang (author)
Li, Yuanjian (author)
Abbas, Zareen, 1962 (author)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
Liu, Wei (author)
Seh, Zhi Wei (author)
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 (creator_code:org_t)
2024
2024
English.
In: Energy Storage Materials. - 2405-8297. ; 65
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Rechargeable aluminum-ion batteries (RAB) with Al-metal anode are regarded as cost-effective and environmentally sustainable energy storage systems. However, tapping the high volumetric capacity of the Al-anode has been a challenge because of the spontaneous and irreversible formation of the oxide layer on its surface that renders it electrochemically inactive. Though recently reported AlCl3-based electrolytes overcome this problem by breaking down this oxide layer, their highly corrosive nature hampers commercialization. Here, we investigate a novel approach to protect the Al-anode from severe oxidation by engineering an artificial protective interphase. A unique and less corrosive combination of Al(CF3SO3)3 salt and BiCl3 additive reacts with the Al-anode intrinsically to form an inorganic-rich protective bilayer. This layer is electronically insulating and significantly reduces the charge transfer resistance and surface activation energy at the anode, enabling plating/stripping at extremely low overpotential of <0.1 V that can be sustained for record-long cycling times of >4000 h.

Subject headings

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Keyword

Al-ion batteries
Anodic overpotential
Multivalent batteries
Solid electrolyte interface

Publication and Content Type

ref (subject category)
art (subject category)

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