| abstract |
An object of the present invention is to provide a positive electrode material for a lithium secondary battery that can achieve both high capacity and high energy efficiency of the lithium secondary battery. The composition formula A a M b (BO 3 ) b + 1 (2 <a ≦ 3, 1 ≦ b ≦ 2, where A is one or more elements selected from the group consisting of Li and Na. Is one or more elements selected from the group consisting of Fe, Mn, and V.) The positive electrode material for a lithium secondary battery represented by: [Selection] Figure 2 |