Kresse, T.; Borchers, C.; Kirchheim, R.: Vacancy-carbon complexes in bcc iron: Correlation between carbon content, vacancy concentration and diffusion coefficient. Scripta Materialia 69 (9), pp. 690 - 693 (2013)
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