Organic cathode gives aluminium battery boost

Aluminium is one of several promising alternatives to lithium-ion battery technology. While not yet capable of the same energy density, aluminium is an abundant resource that is already deeply embedded in industrial cycles and is potentially much more environmentally friendly than lithium.

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Until now, aluminium batteries have used graphite cathodes, but the energy density of graphite has proved too low for the cells to be useful. The new cathode, described in Energy Storage Materials, could lay the path for low-cost, greener batteries that might one day compete with their lithium-ion  counterparts.

"The material costs and environmental impacts that we envisage from our new concept are much lower than what we see today, making them feasible for large scale usage, such as solar cell parks, or storage of wind energy, for example," said research lead Patrik Johansson, Professor at the Department of Physics at Sweden’s Chalmers University of Technology.