(JP9147860-A)      Negative electrode material for use in lithium-ion secondary batteries comprises: (a) milled pitch-based graphite fibres (A) obtainable by graphitisation at 2400C; and (b) milled pitch-based carbon fibres (B) obtainable by carbonisation at 550-1300C.    Also claimed is a process for the production of the negative electrode material.    Both fibre types (A) and (B) have an average particle size of 10-30 m, and 10 wt.% of the fibres are of particle size 5 m. Fibre types (A) and (B) are blended at a weight ratio (A:B) of 95-40:5-60.    The pitch fibres are produced by spinning mesophase pitch. The milled pitch-based graphite fibres (A) are optionally produced by graphitising part of the milled pitch-based carbon fibres (B), followed by blending with the balance of the milled pitch-based carbon fibres (B).    USE -   Lithium-ion secondary battery shows a potential for use as a power source in a portable electronic appliances and as high-performance battery for use in electric vehicles and for electricity storage.    ADVANTAGE -   The negative electrode material provides high initial charge efficiency, has large charge and discharge capacities at high current densities, and enables easy detection of the remaining capacity during discharge. The graphite layer structure of the materials is especially advantageous for the entry and exit of lithium ions, provides reliable particle size distribution, ensures easy uniform blending and two-dimensional orientation, and provides high packing density.    (US5792577-A)      Negative electrode material for use in lithium-ion secondary batteries comprises: (a) milled pitch-based graphite fibres (A) obtainable by graphitisation at 2400C; and (b) milled pitch-based carbon fibres (B) obtainable by carbonisation at 550-1300C.    Also claimed is a process for the production of the negative electrode material.    Both fibre types (A) and (B) have an average particle size of 10-30 m, and 10 wt.% of the fibres are of particle size 5 m. Fibre types (A) and (B) are blended at a weight ratio (A:B) of 95-40:5-60.    The pitch fibres are produced by spinning mesophase pitch. The milled pitch-based graphite fibres (A) are optionally produced by graphitising part of the milled pitch-based carbon fibres (B), followed by blending with the balance of the milled pitch-based carbon fibres (B).    USE -   Lithium-ion secondary battery shows a potential for use as a power source in a portable electronic appliances and as high-performance battery for use in electric vehicles and for electricity storage.    ADVANTAGE -   The negative electrode material provides high initial charge efficiency, has large charge and discharge capacities at high current densities, and enables easy detection of the remaining capacity during discharge. The graphite layer structure of the materials is especially advantageous for the entry and exit of lithium ions, provides reliable particle size distribution, ensures easy uniform blending and two-dimensional orientation, and provides high packing density.    (EP776055-B1)      Negative electrode material for use in lithium-ion secondary batteries comprises: (a) milled pitch-based graphite fibres (A) obtainable by graphitisation at 2400C; and (b) milled pitch-based carbon fibres (B) obtainable by carbonisation at 550-1300C.    Also claimed is a process for the production of the negative electrode material.    Both fibre types (A) and (B) have an average particle size of 10-30 m, and 10 wt.% of the fibres are of particle size 5 m. Fibre types (A) and (B) are blended at a weight ratio (A:B) of 95-40:5-60.    The pitch fibres are produced by spinning mesophase pitch. The milled pitch-based graphite fibres (A) are optionally produced by graphitising part of the milled pitch-based carbon fibres (B), followed by blending with the balance of the milled pitch-based carbon fibres (B).    USE -   Lithium-ion secondary battery shows a potential for use as a power source in a portable electronic appliances and as high-performance battery for use in electric vehicles and for electricity storage.    ADVANTAGE -   The negative electrode material provides high initial charge efficiency, has large charge and discharge capacities at high current densities, and enables easy detection of the remaining capacity during discharge. The graphite layer structure of the materials is especially advantageous for the entry and exit of lithium ions, provides reliable particle size distribution, ensures easy uniform blending and two-dimensional orientation, and provides high packing density.