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    • 64. 发明授权
    • Metal hydride alkaline storage cell and manufacturing method thereof
    • 金属氢化物碱性蓄电池及其制造方法
    • US06852447B2
    • 2005-02-08
    • US09923963
    • 2001-08-08
    • Yoshinori MatsuuraMitsuzo NogamiReizo MaedaKatsuhiko ShinyamaIkuo YonezuKoji Nishio
    • Yoshinori MatsuuraMitsuzo NogamiReizo MaedaKatsuhiko ShinyamaIkuo YonezuKoji Nishio
    • H01M4/24H01M4/26H01M4/36H01M4/38H01M10/24H01M10/30H01M4/58
    • H01M4/366H01M4/242H01M4/26H01M4/383H01M10/24H01M10/26H01M10/345Y02E60/124Y10S420/90Y10T29/49108Y10T29/49115
    • A metal hydride alkaline storage cell of the present invention comprises a positive electrode, a separator impregnated with an electrolyte, and a negative electrode comprising hydrogen-absorbing alloy powder. On the surface of the hydrogen-absorbing alloy powder, there is formed a layer of hydrogen-absorbing alloy oxide, and on the layer of the oxide, there is dotted a catalytic metal or metal compound formed in a granular state by adding a substance soluble in the electrolyte. The substance is selected from the group consisting of a metal fluoride, a metal chloride, a metal iodide, and a metal sulfide. The proportion of the metal fluoride, the metal chloride, the metal iodide, or the metal sulfide in adding, is restricted within the range of from 0.1 to 2.5 wt. % based on the weight of hydrogen-absorbing alloy powder. When the layer of the hydrogen-absorbing alloy oxide is formed on the surface of the hydrogen-absorbing alloy powder, the reaction area on the surface of the hydrogen-absorbing alloy is increased due to the roughness of the layer. Consequently, the catalytic action of the metal is fully utilized by dotting a catalytic metal or metal compound on the alloy surface, and thereby the inner pressure characteristic (high-rate charge characteristic) of a cell is improved.
    • 本发明的金属氢化物碱性蓄电池包括正电极,浸渍有电解质的隔膜和包含吸氢合金粉末的负极。 在吸氢合金粉末的表面上形成有吸氢合金氧化物层,在氧化物层上点着形成颗粒状的催化金属或金属化合物,加入可溶解的物质 在电解液中。 该物质选自金属氟化物,金属氯化物,金属碘化物和金属硫化物。 金属氟化物,金属氯化物,金属碘化物或金属硫化物的添加量的比例限制在0.1〜2.5重量%的范围内。 基于吸氢合金粉末的重量%。 当在吸氢合金粉末的表面上形成吸氢合金氧化物层时,由于该层的粗糙度,吸氢合金表面上的反应区域增加。 因此,通过在合金表面上点燃催化金属或金属化合物来充分利用金属的催化作用,从而提高了电池的内部压力特性(高速率充电特性)。
    • 66. 发明授权
    • Gelled polymer electrolyte lithium secondary cell
    • 凝胶聚合物电解质锂二次电池
    • US06444369B1
    • 2002-09-03
    • US09720094
    • 2000-12-21
    • Maruo KaminoRyuji OhshitaHiroshi NakajimaMakoto UesugiToshiyuki NohmaKoji Nishio
    • Maruo KaminoRyuji OhshitaHiroshi NakajimaMakoto UesugiToshiyuki NohmaKoji Nishio
    • H01M614
    • H01M4/505H01M10/052H01M10/0525H01M10/0565H01M2300/0085
    • The battery of this invention includes a positive electrode including a gelled polymeric electrolyte (A) and using spinel type lithium manganese oxide as an active material; a negative electrode; a gelled polymeric electrolyte (B) in the shape of a film or sheet also serving as a separator, and both the gelled polymeric electrolyte (A) and the gelled polymeric electrolyte (B) are made from a polymer of poly(alkylene oxide) series impregnated with a liquid electrolyte. Since the battery includes the positive electrode using the specific gelled polymeric electrolyte (A), a contact area between the positive electrode active material and the gelled polymeric electrolyte is large, so as to attain large initial discharge capacity (at high rate discharge in particular). Also, since the battery includes the specific gelled polymeric electrolyte (B) as the electrolyte, manganese included in the spinel type lithium manganese oxide is minimally eluted, and hence, the discharge capacity is minimally degraded during charge-discharge cycles due to elution of manganese, resulting in attaining good charge-discharge cycle performance.
    • 本发明的电池包括含有胶凝聚合物电解质(A)和使用尖晶石型锂锰氧化物作为活性材料的正电极; 负极; 胶状聚合物电解质(B)为薄膜或片材形状,也用作隔膜,凝胶状高分子电解质(A)和凝胶状聚合物电解质(B)均由聚(环氧烷)系列 用液体电解质浸渍。 由于电池包括使用特定凝胶状高分子电解质(A)的正极,所以正极活性物质与凝胶状聚合物电解质之间的接触面积大,以达到大的初始放电容量(特别是高倍率放电) 。 此外,由于电池包含作为电解质的特定凝胶状聚合物电解质(B),所以尖晶石型锂锰氧化物中所含的锰被最小程度地洗脱,因此在充放电循环中由于锰的洗脱而导致的放电容量最小化 ,从而获得良好的充放电循环性能。
    • 68. 发明授权
    • Lithium secondary battery
    • 锂二次电池
    • US06428930B2
    • 2002-08-06
    • US09220353
    • 1998-12-24
    • Takeshi MaedaHideyuki InomataNaoya NakanishiIkuo YonezuKoji Nishio
    • Takeshi MaedaHideyuki InomataNaoya NakanishiIkuo YonezuKoji Nishio
    • H01M448
    • H01M10/0525H01M4/131H01M4/505H01M4/525H01M10/0587
    • A lithium secondary battery according to the present invention comprises: a positive electrode having a positive electrode active material composed of a reversible lithium intercalation material; a negative electrode having a negative electrode active material composed of a reversible lithium intercalation material; and a separator interposed between said positive electrode and said negative electrode, and in the positive electrode active material, at least one material which shows a positive sign of a total sum of entropy heat from a discharged state to a charged state is mixed with at least one material which shows a negative sign of a total sum of an entropy heat from a discharged state to a charged state. In a battery having such a construction, the amount of entropy heat during charge is reduced compared with a battery employing only a material which shows a positive sign of the total sum of entropy heat. As a result of this, a battery produced in accordance with the present invention achieves an improved cycle characteristic, and thereby is capable of preventing a large deterioration of a battery performance.
    • 根据本发明的锂二次电池包括:正极,具有由可逆的锂嵌入材料构成的正极活性物质;负极,具有由可逆的锂嵌入材料构成的负极活性物质; 和分离器插入在所述正极和所述负极之间,并且在正极活性物质中,至少一种显示从放电状态到充电状态的熵热的总和的正征的材料与至少一个 显示从放电状态到充电状态的熵热的总和的负号的材料。 在具有这种结构的电池中,与仅使用显示熵热总和的材料的电池相比,充电期间的熵热量减少。 结果,根据本发明制造的电池实现了改进的循环特性,从而能够防止电池性能的大的劣化。