Alternativer Identifier:
(KITopen-DOI) 10.5445/IR/1000154295
Verwandter Identifier:
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Ersteller/in:
Wang, Kai [Institut für Nanotechnologie, Helmholtz-Institut Ulm, Karlsruhe Nano Micro Facility, Center for Electrochemical Energy Storage Ulm & Karlsruhe]

Hua, Weibo [Energiespeichersysteme]

Huang, Xiaohui [Institut für Nanotechnologie]

Stenzel, David [Institut für Nanotechnologie]

Wang, Junbo [Energiespeichersysteme]

Ding, Ziming [Institut für Nanotechnologie]

Cui, Yanyan [Institut für Nanotechnologie]

Wang, Qingsong [Institut für Nanotechnologie]

Ehrenberg, Helmut [Energiespeichersysteme]

Breitung, Ben [Institut für Nanotechnologie]

Kübel, Christian https://orcid.org/0000-0001-5701-4006 [Institut für Nanotechnologie]

Mu, Xiaoke [Institut für Nanotechnologie]
Beitragende:
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Titel:
Synergy of cations in high entropy oxide lithium ion battery anode
Weitere Titel:
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Beschreibung:
(Abstract) High entropy oxides (HEOs) with chemically disordered multi-cation structure attract intensive interest as negative electrode materials for battery applications. The outstanding electrochemical performance is attributed to the high-entropy stabilization and so-called ‘cocktail effect’. However, the configurational entropy is insufficient to drive the structural reversibility of the room-temperature thermodynamically metastable HEO during conversion-type battery reaction, and the ‘cocktail effect’ has not been explained thus far. This work unveils the multi-cations synergy of the HEO Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O at atomic and nanoscale during electrochemical reaction and explains the ‘cocktail effect’. The more electronegative elements form an electrochemically inert 3-dimensional metallic nano-network enabling electron transport. The electrochemical inactive cation stabilizes an oxide nanophase, which is semi-coherent with the metallic phase and accommodates Li+ ions. This self-assembled nanostructure enables stable cycling of micron-sized particles, which bypasses the need for nanoscale pre-modification required for conventional metal oxides in battery applications. This demonstrates elemental diversity is the key for optimizing multi-cation electrode materials.
(Technical Remarks) Information about the data format and software suitable to open the data is available in the subdirectory 'description'
Schlagworte:
high-entropy oxide
battery materials
cation synergy
size effect
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Sprache:
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Erstellungsjahr:
Fachgebiet:
Engineering
Objekttyp:
Dataset
Datenquelle:
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Datenverarbeitung:
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Erscheinungsjahr:
Lizenz:
Rechteinhaber/in:
Wang, Kai

Hua, Weibo

Huang, Xiaohui

Stenzel, David

Wang, Junbo

Ding, Ziming

Cui, Yanyan

Wang, Qingsong

Ehrenberg, Helmut

Breitung, Ben

Mu, Xiaoke
Förderung:
-
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Status:
Publiziert
Eingestellt von:
kitopen
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Archivierungsdatum:
2023-06-21
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58,3 GB
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kitopen
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