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Electrodeposited Cu2Sb as anode material for 3-dimensional Li-ion microbatteries

Published online by Cambridge University Press:  31 January 2011

Emilie Perre*
Affiliation:
Université de Toulouse, CIRIMAT-UMR CNRS 5085, 31062 Toulouse Cedex 4, France; Department of Materials Chemistry, The A˚ngström Advanced Battery Centre, Uppsala University, SE 751 21 Uppsala, Sweden; and Alistore European Research Institute, 80039 Amiens Cedex, France
Pierre Louis Taberna
Affiliation:
Université de Toulouse, CIRIMAT-UMR CNRS 5085, 31062 Toulouse Cedex 4, France; and Alistore European Research Institute, 80039 Amiens Cedex, France
Philippe Poizot
Affiliation:
Alistore European Research Institute, 80039 Amiens Cedex, France; and LRCS-UMR 6007, Université de Picardie Jules Verne, 80039 Amiens, France
Kristina Edström
Affiliation:
Department of Materials Chemistry, The A˚ngström Advanced Battery Centre, Uppsala University, SE 751 21 Uppsala, Sweden; and Alistore European Research Institute, 80039 Amiens Cedex, France
Patrice Simon
Affiliation:
Université de Toulouse, CIRIMAT-UMR CNRS 5085, 31062 Toulouse Cedex 4, France; and Alistore European Research Institute, 80039 Amiens Cedex, France
*
a)Address all correspondence to this author. e-mail: perre@chimie.ups-tlse.fr
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Abstract

An increasing demand on high energy and power systems has arisen not only with the development of electric vehicle (EV), hybrid electric vehicle (HEV), telecom, and mobile technologies, but also for specific applications such as powering of microelectronic systems. To power those microdevices, an extra variable is added to the equation: a limited footprint area. Three-dimensional (3D) microbatteries are a solution to combine high-density energy and power. In this work, we present the formation of Cu2Sb onto three-dimensionally architectured arrays of Cu current collectors. Sb electrodeposition conditions and annealing post treatment are discussed in light of their influence on the morphology and battery performances. An increase of cycling stability was observed when Sb was fully alloyed with the Cu current collector. A subsequent separator layer was added to the 3D electrode when optimized. Equivalent capacity values are measured for at least 20 cycles. Work is currently devoted to the identification of the causes of capacity fading.

Type
Articles
Copyright
Copyright © Materials Research Society 2010

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References

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