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- Title
Thin-Film Silicon for Flexible Metal-Air Batteries.
- Authors
Garamoun, Ahmed; Schubert, Markus B.; Werner, Jürgen H.
- Abstract
Due to its high energy density, theoretical studies propose silicon as a promising candidate material for metal-air batteries. Herein, for the first time, experimental results detail the use of n-type doped amorphous silicon and silicon carbide as fuel in Si-air batteries. Thin-film silicon is particularly interesting for flexible and rolled batteries with high specific energies. Our Si-air batteries exhibit a specific capacity of 269 Ah kg−1 and an average cell voltage of 0.85 V at a discharge current density of 7.9 μA cm−2, corresponding to a specific energy of 229 Wh kg−1. Favorably in terms of safety, low concentrated alkaline solution serves as electrolyte. Discharging of the Si-air cells continues as long as there is silicon available for oxidation.
- Subjects
METAL-air batteries; AMORPHOUS silicon; SILICON carbide; SILICON research; THIN film research; ENERGY density; ELECTROLYTES; ELECTRIC batteries research
- Publication
ChemSusChem, 2014, Vol 7, Issue 12, p3272
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.201402463