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    • 56. 发明申请
    • NONAQUEOUS ELECTROLYTE BATTERY
    • 非电解电解质电池
    • US20130216920A1
    • 2013-08-22
    • US13820823
    • 2011-09-05
    • Tomonobu TsujikawaMasayasu ArakawaMasayuki TeradaKoji Hayashi
    • Tomonobu TsujikawaMasayasu ArakawaMasayuki TeradaKoji Hayashi
    • H01M10/056H01M10/052
    • H01M10/056H01M4/485H01M4/505H01M4/587H01M4/661H01M10/052H01M10/0525H01M10/0568H01M10/0569H01M10/4235Y02T10/7011
    • A non-aqueous electrolyte battery capable of flattening of a voltage property and securing safety at a time of battery abnormality is provided. A lithium-ion secondary battery 20 has an electrode group 6 in which a positive and a negative electrode plates are wound. A non-aqueous electrolyte is formed by adding LiBF4 to a mixed solvent of EC and DMC. In the positive electrode plate, a positive electrode mixture layer W2 including a positive electrode active material is formed at both surfaces of an aluminum foil W1. A lithium manganese magnesium complex oxide having a spinel crystal structure is used as the positive electrode active material. A flame retardant layer W6 including a phosphazene compound is formed at a surface of the positive electrode mixture layer W2. In the negative electrode plate, a negative electrode mixture layer W4 including a negative electrode active material is formed at both surfaces of a rolled copper foil W3. A carbon material that a surface of graphite is coated by pyrolytic carbon is used as the negative electrode active material. The phosphazene compound demonstrates non-flammability, and a voltage property is flattened by the graphite material.
    • 提供能够使电压特性变平且在电池异常时确保安全性的非水电解质电池。 锂离子二次电池20具有缠绕有正极板和负极板的电极组6。 通过将LiBF 4加入到EC和DMC的混合溶剂中形成非水电解质。 在正极板中,在铝箔W1的两面形成有包含正极活性物质的正极合剂层W2。 使用具有尖晶石晶体结构的锂锰镁复合氧化物作为正极活性物质。 在正极合剂层W2的表面形成有包含磷腈化合物的阻燃层W6。 在负极板中,在轧制的铜箔W3的两面形成有负极活性物质的负极合剂层W4。 作为负极活性物质,使用石墨的表面被热解碳覆盖的碳材料。 磷腈化合物显示出不可燃性,并且电压特性被石墨材料压平。
    • 57. 发明申请
    • NONAQUEOUS ELECTROLYTE BATTERY
    • 非电解电解质电池
    • US20130216908A1
    • 2013-08-22
    • US13820813
    • 2011-09-05
    • Tomonobu TsujikawaMasayasu ArakawaHirokazu DenmaKoji Hayashi
    • Tomonobu TsujikawaMasayasu ArakawaHirokazu DenmaKoji Hayashi
    • H01M4/583
    • H01M4/583H01M4/13H01M4/625H01M10/0587H01M10/4235
    • A non-aqueous electrolyte battery capable of securing safety at a time of battery abnormality and restricting a drop in a charge/discharge property at a time of battery use is provided. In a lithium-ion secondary battery 20, an electrode group 6 is accommodated in a battery container 7. The electrode group 6 is formed by winding a positive electrode plate and a negative electrode plate via a separator W5. The positive electrode plate has an aluminum foil W1 as a positive electrode collector. A positive electrode mixture layer W2 including a positive electrode active material is formed at both surfaces of the aluminum foil W1. A flame retardant layer W6 containing a flame retardant is formed at both surfaces of the positive electrode mixture layer W2. A carbon material which has electron conductivity and of which mass ratio to the flame retardant is 25% or less is contained in the flame retardant layer W6. The negative electrode plate has a rolled copper foil W3 as a negative electrode collector. A negative electrode mixture layer W4 including a negative electrode active material is formed at both surfaces of the rolled copper foil W3. Electron conductivity is secured at a battery use time, and the flame retardant decomposes at a battery abnormality time.
    • 提供一种能够在电池异常时确保安全性并限制电池使用时的充放电特性的下降的非水电解质电池。 在锂离子二次电池20中,电极组6容纳在电池容器7中。电极组6通过隔膜W5卷绕正极板和负极板而形成。 正极板具有铝箔W1作为正极集电体。 在铝箔W1的两面形成有包含正极活性物质的正极合剂层W2。 在正极合剂层W2的两面形成含有阻燃剂的阻燃层W6。 在阻燃层W6中含有具有电子传导性且阻燃剂的质量比为25%以下的碳材料。 负极板具有作为负极集电体的卷绕铜箔W3。 在轧制铜箔W3的两面形成有负极活性物质的负极合剂层W4。 在电池使用时间确保电子传导性,并且阻燃剂在电池异常时分解。