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Inorganics 2014, 2(4), 674-682; doi:10.3390/inorganics2040674

Preparation and Cycling Performance of Iron or Iron Oxide Containing Amorphous Al-Li Alloys as Electrodes

1
Leibniz Institute for Solid State and Materials Research Dresden (IFW), Institute for Complex Materials, Helmholtzstr. 20, D-01069 Dresden, Germany
2
Institute of Materials Science, Technische Universität Dresden, Helmholtzstr. 7, D-01069 Dresden, Germany
3
Hochschule für Technik und Wirtschaft Dresden, Faculty of Mechanical Engineering/Process Engineering, Friedrich-List-Platz 1, D-01069 Dresden, Germany
*
Author to whom correspondence should be addressed.
Received: 23 September 2014 / Revised: 3 November 2014 / Accepted: 4 December 2014 / Published: 12 December 2014
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Abstract

Crystalline phase transitions cause volume changes, which entails a fast destroying of the electrode. Non-crystalline states may avoid this circumstance. Herein we present structural and electrochemical investigations of pre-lithiated, amorphous Al39Li43Fe13Si5-powders, to be used as electrode material for Li-ion batteries. Powders of master alloys with the compositions Al39Li43Fe13Si5 and Al39Li43Fe13Si5 + 5 mass-% FeO were prepared via ball milling and achieved amorphous/nanocrystalline states after 56 and 21.6 h, respectively. In contrast to their Li-free amorphous pendant Al78Fe13Si9, both powders showed specific capacities of about 400 and 700 Ah/kgAl, respectively, after the third cycle. View Full-Text
Keywords: Li-ion batteries; metallic anodes; amorphous; ball milling; iron oxide Li-ion batteries; metallic anodes; amorphous; ball milling; iron oxide
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Thoss, F.; Giebeler, L.; Weißer, K.; Feller, J.; Eckert, J. Preparation and Cycling Performance of Iron or Iron Oxide Containing Amorphous Al-Li Alloys as Electrodes. Inorganics 2014, 2, 674-682.

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