Eklund, P.; Kerdsongpanya, S.; Alling, B.: Transition-metal-nitride-based thin films as novel energy harvesting materials. Journal of Materials Chemistry C 4 (18), pp. 3905 - 3914 (2016)
Scientists at the Max Planck Institute for Sustainable Materials have developed a carbon-free, energy-saving method to extract nickel for batteries, magnets and stainless steel.