abstract |
The present invention provides a positive electrode active material for a lithium ion secondary battery or a positive electrode active material for a sodium ion secondary battery capable of effectively expressing more excellent charge and discharge characteristics, and a method for producing the same. That is, the present invention is a carbon derived from cellulose nanofibers supported on formula (A): LiFe a Mn b M c PO 4 , formula (B): LiFe a Mn b M c SiO 4 , or formula (C ): a positive electrode active material for a secondary battery made of an oxide represented by NaFe g Mn h Q i PO 4 . |