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US20070202405A1 Layered Lithium Nickel Manganese Cobalt Composite Oxide Powder For Material Of Positive Electrode Of Lithium Secondary Battery, Process For Producing The Same, Positive Electrode Of Lithium Secondary Battery Therefrom, And Lithium Secondary Battery 有权
锂二次电池正极材料的层状锂锰锰复合氧化物粉末，其制造方法，锂二次电池正极和锂二次电池

  • Patent Title: Layered Lithium Nickel Manganese Cobalt Composite Oxide Powder For Material Of Positive Electrode Of Lithium Secondary Battery, Process For Producing The Same, Positive Electrode Of Lithium Secondary Battery Therefrom, And Lithium Secondary Battery
  • Patent Title (中): 锂二次电池正极材料的层状锂锰锰复合氧化物粉末，其制造方法，锂二次电池正极和锂二次电池
  • Application No.: US10591911
    Application Date: 2005-04-27
  • Publication No.: US20070202405A1
    Publication Date: 2007-08-30
  • Inventor: Kenji Shizuka , Kenji Okahara
  • Applicant: Kenji Shizuka , Kenji Okahara
  • Applicant Address: JP Minato-ku, Tokyo 108-0014
  • Assignee: Mitsubishi Chemical Corporation
  • Current Assignee: Mitsubishi Chemical Corporation
  • Current Assignee Address: JP Minato-ku, Tokyo 108-0014
  • Priority: JP2004-131599 20040427
  • International Application: PCT/JP05/08047 WO 20050427
  • Main IPC: H01M4/52
  • IPC: H01M4/52 ;  H01M4/50 ;  C01G45/12 ;  C01G53/04 ;  C01G51/04
Layered Lithium Nickel Manganese Cobalt Composite Oxide Powder For Material Of Positive Electrode Of Lithium Secondary Battery, Process For Producing The Same, Positive Electrode Of Lithium Secondary Battery Therefrom, And Lithium Secondary Battery
Abstract:
A powder of a layered lithium-nickel-manganese-cobalt composite oxide for use as a positive-electrode material for lithium secondary battery is provided which, when used as a positive-electrode material for lithium secondary battery, enables a cost reduction and higher safety to be reconciled with improved battery performances. The powder of a layered lithium-nickel-manganese-cobalt composite oxide for use as a positive-electrode material for lithium secondary battery is composed of secondary particles formed by the aggregation of primary particles. It has a composition represented by the following formula (I), has a volume resistivity of 5×105 Ω·cm or lower in the state of being compacted at a pressure of 40 MPa, and has a value of C/S, wherein C is the concentration of carbon contained therein (% by weight) and S is the BET specific surface area thereof (m2/g), of 0.025 or smaller. The powder has been regulated so as to have a volume resistivity not higher than the specified value and a considerably reduced carbon content while having a composition in a limited range, whereby a cost reduction and higher safety can be reconciled with improved battery performances. Li1+zNixMnyCo1−x−yOδ  (I) (0
Abstract(Chinese):

提供了用作锂二次电池的正极材料的分层锂镍锰钴复合氧化物粉末，其用作锂二次电池的正极材料时，能够降低成本并提高安全性 与电池性能提高相协调。 用作锂二次电池正极材料的层状锂镍锰钴复合氧化物粉末由通过一次粒子聚集而形成的二次粒子构成。 其具有由下式（I）表示的组成，在40MPa的压力下被压实的状态下的体积电阻率为5×10 5Ω·cm以下，并且具有 C / S，其中C是其中所含的碳的浓度（重量％），S是其BET比表面积（m 2 SUP / g），为0.025或更小。 该粉末被调节成具有不高于规定值的体积电阻率并且具有显着降低的碳含量，同时具有在有限范围内的组成，由此可以与改进的电池性能相一致地降低成本和更高的安全性。 <？in-line-formula description =“In-line Formulas”end =“lead”？> Li 1 + z （I）<？in-line-formula description =“In-line Formulas”end =“tail”？>（0

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