Hengge, K.; Heinzl, C.; Perchthaler, M.; Welsche, M.; Scheu, C.: Material optimization for high-temperature polymer-electrolyte-membrane fuel cells. Material optimization for high-temperature polymer-electrolyte-membrane fuel cells, Duisburg, Germany (2016)
If manganese nodules can be mined in an environmentally friendly way, the critical metals needed for the energy transition could be produced with low CO2 emissions