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Aluminum Chloride-Graphite Batteries with Flexible Current Collectors Prepared from Earth-Abundant Elements.

  • Wang S Laboratory of Inorganic Chemistry Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1 CH-8093 Zürich Switzerland.
  • Kravchyk KV Laboratory of Inorganic Chemistry Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1 CH-8093 Zürich Switzerland.
  • Filippin AN Laboratory for Thin Films and Photovoltaics Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland.
  • Müller U Laboratory for Nanoscale Materials Science Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland.
  • Tiwari AN Laboratory for Thin Films and Photovoltaics Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland.
  • Buecheler S Laboratory for Thin Films and Photovoltaics Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland.
  • Bodnarchuk MI Laboratory for Thin Films and Photovoltaics Empa - Swiss Federal Laboratories for Materials Science and Technology Überlandstrasse 129 CH-8600 Dübendorf Switzerland.
  • Kovalenko MV Laboratory of Inorganic Chemistry Department of Chemistry and Applied Biosciences ETH Zürich Vladimir-Prelog-Weg 1 CH-8093 Zürich Switzerland.
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  • 2018-05-04
Published in:
  • Advanced science (Weinheim, Baden-Wurttemberg, Germany). - 2018
aluminum chloride graphite batteries
current collectors
energy density
graphite
titanium nitride
English In the search for low-cost and large-scale stationary storage of electricity, nonaqueous aluminum chloride-graphite batteries (AlCl3-GBs) have received much attention due to the high natural abundances of their primary constituents, facile manufacturing, and high energy densities. Much research has focused on the judicious selection of graphite cathode materials, leading to the most notable recent advances in the performance of AlCl3-GBs. However, the major obstacle to commercializing this technology is the lack of oxidatively stable, inexpensive current collectors that can operate in chloroaluminate ionic liquids and are composed of earth-abundant elements. This study presents the use of titanium nitride (TiN) as a compelling material for this purpose. Flexible current collectors can be fabricated by coating TiN on stainless steel or flexible polyimide substrates by low-cost, rapid, scalable methods such as magnetron sputtering. When these current collectors are used in AlCl3-GB coin or pouch cells, stable cathodic operation is observed at voltages of up to 2.5 V versus Al3+/Al. Furthermore, these batteries have a high coulombic efficiency of 99.5%, power density of 4500 W kg-1, and cyclability of at least 500 cycles.
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  • English
Open access status
gold
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https://sonar.ch/global/documents/94978
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