Cobalt tetroxide o se mea fa'ameamea u'amea u'amea suiga.Nano-cobalt tetroxide o se mea taua maneta ma P-ituaiga semiconductor, lea e taua tele le aoga aoga i le tele o itu, e pei o le heterogeneous catalysis, anode mea mo maa lithium-ion toe faʻaleleia, faʻamautu-setete sensors, masini electrochromic, mea e mitiia le malosi o le la. ma pigments.