| abstract |
According to one embodiment, there is provided a battery module comprising two non-aqueous electrolyte cells electrically connected in series. Each non-aqueous electrolyte cell includes a cathode, a cathode, and a non-aqueous electrolyte. The anode contains an iron-containing phosphorus compound represented by Li x Fe 1 - y Mn y A z PO 4 and having an olivine structure, wherein A is an element selected from the group consisting of V, Mg, Ni, Al, Sn, Zr and Nb Is at least one element selected and is set to 0? X? 1.1, 0? Y? 0.2, and 0? Z? 0.2. The negative electrode contains a titanium-containing oxide. The maximum charging voltage of the battery module is in the range of 4 V to 5 V. |