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Active material, nonaqueous electrolyte battery, battery pack and battery module

專利號
US10096827B2
公開日期
2018-10-09
申請人
KABUSHIKI KAISHA TOSHIBA（JP Minato-ku）
發(fā)明人
Yasuhiro Harada; Norio Takami; Yorikazu Yoshida; Kazuki Ise
IPC分類
H01M4/00; H01M4/485; C01G23/00; H01M4/131; H01M4/36; H01M10/052; C01G25/00; C01G31/00; C01G33/00; C01G35/00; C01G39/00; C01G49/00; C01G51/00; H01M4/62; H01M10/0525; H01M4/02
技術領域
electrode,fmmm,battery,nonaqueous,composite,oxide,in,example,li2co3,lithium
地域： Minato-ku

摘要

In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+δ. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0≤w≤4, x is within a range of 0

說明書

The composite oxide, which can be contained in the active material for a battery according to the first embodiment, is represented by the general formula of Li2+wNa2?xM1yTi6?zM2zO14+δ. In this composite oxide, Li exists as a monovalent cation. M1 is at least one monovalent cation selected from the group consisting of Cs and K. M1 may be one of Cs and K, or both of Cs and K. M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn and Al. M2 may be one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn and Al, or be two or more selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn and Al. Here, each of Fe, Co, Mn and Al is a trivalent cation. Each of Zr and Sn is a tetravalent cation. Each of V, Nb and Ta is a pentavalent cation. Each of Mo and W is a hexavalent cation. Here, the valence of each cation described above are a valence of each cation when w is 0 in the above general formula, i.e., in a discharge state.

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