abstract |
The present invention provides a novel compound that may have a high capacity when used as a positive electrode material for a lithium ion secondary battery. The composition formula M [Fe (CN) 5 NO] ยท nH 2 O (wherein M is a transition metal selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, n = 0 to Nitroprusside compound represented by 3). [Selection] Figure 4 |