Patent ID: 8415074

Claim:
A nonaqueous electrolyte battery comprising: a negative electrode having a material that releases lithium ions as a negative electrode active material; an ion-conducting medium that is in contact with the negative electrode and conducts lithium ions; and a positive electrode having a positive electrode material that generates a battery reaction and has a solubility in the ion-conducting medium that is higher than that of oxygen, the positive electrode being in contact with the ion-conducting medium, and containing a fullerene derivative as a redox catalyst, wherein the fullerene derivative is represented by the following formula: wherein n is an integer of 1 to 8, Fu represents at least one of fullerenes C 60 , C 70 , C 74 , C 76 , C 78 , C 80 , C 82 , C 84 , C 90 , or C 96 , R 1 and R 2 each independently represent a hydrogen atom or an alkyl group, which may be branched, and X − represents any one of a chlorine ion, a bromine ion, or an iodine ion.