A rechargeable transition metal battery includes a negative electrode, a positive electrode and an electrolyte. The negative electrode includes a negative electrode material, and the negative electrode material is a transition metal or an alloy thereof. The positive electrode is electrically connected to the negative electrode and includes a host material and a positive electrode material. The positive electrode material is connected to the host material. The host material includes a carbon, and the positive electrode material includes a compound of a metal, a chalcogen or a halogen. The electrolyte is disposed between the positive electrode and the negative electrode. Therefore, a good capacity and battery stability can be achieved by selecting transition metal as the negative electrode. |