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Stability and Performance of Heterogeneous Anode Assemblies of Silicon Nanowires on Carbon Meshes for Lithium-Sulfur Battery Applications

Published online by Cambridge University Press:  27 February 2015

Andreas Krause ,
Jan Brueckner ,
Susanne Doerfler ,
Florian M. Wisser ,
Holger Althues ,
Matthias Grube ,
Jan Martin ,
Julia Grothe ,
Thomas Mikolajick  and
Walter M. Weber
Andreas Krause
Affiliation:
Namlab gGmbH, 01187 Dresden, Saxony, Germany; Center for Advancing Electronics Dresden (CfAED), Dresden University of Technology, Germany
Jan Brueckner
Affiliation:
Fraunhofer Institute for Material and Beam Technology (IWS), Winterbergstr. 28, 01277 Dresden, Germany
Susanne Doerfler
Affiliation:
Fraunhofer Institute for Material and Beam Technology (IWS), Winterbergstr. 28, 01277 Dresden, Germany
Florian M. Wisser
Affiliation:
Department for Inorganic Chemistry I, Dresden University of Technology, Germany
Holger Althues
Affiliation:
Fraunhofer Institute for Material and Beam Technology (IWS), Winterbergstr. 28, 01277 Dresden, Germany
Matthias Grube
Affiliation:
Namlab gGmbH, 01187 Dresden, Saxony, Germany;
Jan Martin
Affiliation:
Department for Inorganic Chemistry I, Dresden University of Technology, Germany
Julia Grothe
Affiliation:
Department for Inorganic Chemistry I, Dresden University of Technology, Germany
Thomas Mikolajick
Affiliation:
Namlab gGmbH, 01187 Dresden, Saxony, Germany; Center for Advancing Electronics Dresden (CfAED), Dresden University of Technology, Germany Institute of Semiconductor and Microsystems Technology, Dresden University of Technology, Germany
Walter M. Weber
Affiliation:
Namlab gGmbH, 01187 Dresden, Saxony, Germany; Center for Advancing Electronics Dresden (CfAED), Dresden University of Technology, Germany
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Abstract

Si is a promising anode material for Li storage due to its high theoretical specific capacity surpassing 4200 Ah/kg. Si based anodes exhibit an extreme instability upon electrochemical incorporation of Li given the accompanied large volume expansion of about 400%. We show innovative anode assemblies composed of a forest of free standing Si nanowires conformally integrated on carbon meshes. The morphology of silicon nanowires allows a volume expansion and compression lowering strain incorporation. In this paper, we demonstrate the utilization of SiNW grown on top of a current collector made of a carbon fiber network. This leads to an increase of stability of Si with a remaining effective capacitance above 2000 Ah/kg(Si) after 225 full charge/discharge cycles. This is significantly better compared to previous results shown in literature. The anodes are fabricated by a simple and inexpensive method promising for a transfer into industrial integration.

Keywords

Sichemical vapor deposition (CVD) (deposition)energy storage
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1751: Symposium LL – Semiconductor Nanowires—Growth, Physics, Devices and Applications , 2015 , mrsf14-1751-ll09-03
Copyright
Copyright © Materials Research Society 2015 

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References

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