(EP914683-A1)      An anode active material for lithium battery has the formula LixMn2-yMyO4 (y = 0.45-0.6, x = 0-1), with a cubic spinel structure with a lattice constant of 8.19 or smaller.    Also claimed are: (i) the manufacture of an anode for an Li battery by a solid phase reaction involving firing an Li compound, Mn compound and other transition metal compound, then refiring after pressing at least once; (ii) the manufacture of an anode for an Li battery by a sol-gel process involving dissolving an Li compound, Mn compound and other transition metal compound in alcohol or water, adding ammonia water to gelatinise the solution, and firing; and (iii) a Li battery comprising an anode of the above material and a cathode of Li, Li alloy, C or graphite, and having a nominal voltage of 4.7 V.    Preferably M is a divalent metal selected from Ni, Co, Fe, Mg and Zn, especially Ni.    ADVANTAGE -   A high voltage battery can be produced. Charge and discharge reactions proceed in a one phase reaction and a monotonous variation of potential can be obtained. The crystal structure does not change with charge/discharge reactions, the unit cell volume experiences less change and the capacity experiences less decrease upon repeated charge/discharge operations.    (CN1224536-A)      An anode active material for lithium battery has the formula LixMn2-yMyO4 (y = 0.45-0.6, x = 0-1), with a cubic spinel structure with a lattice constant of 8.19 or smaller.    Also claimed are: (i) the manufacture of an anode for an Li battery by a solid phase reaction involving firing an Li compound, Mn compound and other transition metal compound, then refiring after pressing at least once; (ii) the manufacture of an anode for an Li battery by a sol-gel process involving dissolving an Li compound, Mn compound and other transition metal compound in alcohol or water, adding ammonia water to gelatinise the solution, and firing; and (iii) a Li battery comprising an anode of the above material and a cathode of Li, Li alloy, C or graphite, and having a nominal voltage of 4.7 V.    Preferably M is a divalent metal selected from Ni, Co, Fe, Mg and Zn, especially Ni.    ADVANTAGE -   A high voltage battery can be produced. Charge and discharge reactions proceed in a one phase reaction and a monotonous variation of potential can be obtained. The crystal structure does not change with charge/discharge reactions, the unit cell volume experiences less change and the capacity experiences less decrease upon repeated charge/discharge operations.    (JP2000515672-W)      An anode active material for lithium battery has the formula LixMn2-yMyO4 (y = 0.45-0.6, x = 0-1), with a cubic spinel structure with a lattice constant of 8.19 or smaller.    Also claimed are: (i) the manufacture of an anode for an Li battery by a solid phase reaction involving firing an Li compound, Mn compound and other transition metal compound, then refiring after pressing at least once; (ii) the manufacture of an anode for an Li battery by a sol-gel process involving dissolving an Li compound, Mn compound and other transition metal compound in alcohol or water, adding ammonia water to gelatinise the solution, and firing; and (iii) a Li battery comprising an anode of the above material and a cathode of Li, Li alloy, C or graphite, and having a nominal voltage of 4.7 V.    Preferably M is a divalent metal selected from Ni, Co, Fe, Mg and Zn, especially Ni.    ADVANTAGE -   A high voltage battery can be produced. Charge and discharge reactions proceed in a one phase reaction and a monotonous variation of potential can be obtained. The crystal structure does not change with charge/discharge reactions, the unit cell volume experiences less change and the capacity experiences less decrease upon repeated charge/discharge operations.    (US2001008730-A1)      An anode active material for lithium battery has the formula LixMn2-yMyO4 (y = 0.45-0.6, x = 0-1), with a cubic spinel structure with a lattice constant of 8.19 or smaller.    Also claimed are: (i) the manufacture of an anode for an Li battery by a solid phase reaction involving firing an Li compound, Mn compound and other transition metal compound, then refiring after pressing at least once; (ii) the manufacture of an anode for an Li battery by a sol-gel process involving dissolving an Li compound, Mn compound and other transition metal compound in alcohol or water, adding ammonia water to gelatinise the solution, and firing; and (iii) a Li battery comprising an anode of the above material and a cathode of Li, Li alloy, C or graphite, and having a nominal voltage of 4.7 V.    Preferably M is a divalent metal selected from Ni, Co, Fe, Mg and Zn, especially Ni.    ADVANTAGE -   A high voltage battery can be produced. Charge and discharge reactions proceed in a one phase reaction and a monotonous variation of potential can be obtained. The crystal structure does not change with charge/discharge reactions, the unit cell volume experiences less change and the capacity experiences less decrease upon repeated charge/discharge operations.