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Active material, non-aqueous electrolyte battery, battery pack and battery pack

A non-aqueous electrolyte, active material technology, applied in the direction of active material electrodes, battery electrodes, battery pack components, etc., to achieve the effect of high battery voltage and high energy density

Active Publication Date: 2018-11-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the past, it was difficult to lower the electrode potential in order to increase the energy density.

Method used

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  • Active material, non-aqueous electrolyte battery, battery pack and battery pack
  • Active material, non-aqueous electrolyte battery, battery pack and battery pack
  • Active material, non-aqueous electrolyte battery, battery pack and battery pack

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] According to the first embodiment, there is provided an active material for batteries containing a composite oxide having an orthorhombic crystal structure. The composite oxide uses the general formula Li x M1 1-y M2 y Ti 6-z M3 z o 14+δ express. However, M1 is at least one selected from Sr, Ba, Ca and Mg. M2 is at least one selected from Cs, K and Na. M3 is at least one selected from Al, Fe, Zr, Sn, V, Nb, Ta, and Mo. x is in the range of 2≤x≤6. y is in the range of 0<y<1. z is in the range of 0<z≦6. δ is in the range of -0.5≤δ≤0.5.

[0034] The complex oxide contained in the active material for batteries according to the first embodiment is a compound oxide of the general formula Li x M1Ti 6 o 14+δ Indicates, among composite oxides having an orthorhombic crystal structure, a substitution oxide obtained by substituting a part of the M1 site with a metal cation M2 and substituting at least a part of the Ti site with a metal cation M3.

[0035] The active ...

no. 2 Embodiment approach

[0104] According to the second embodiment, a nonaqueous electrolyte battery can be provided. This nonaqueous electrolyte battery includes a negative electrode containing the battery active material according to the first embodiment, a positive electrode, and a nonaqueous electrolyte.

[0105] The non-aqueous electrolyte battery according to the second embodiment may further include a separator arranged between the positive electrode and the negative electrode. The positive electrode, the negative electrode and the separator can constitute an electrode group. A non-aqueous electrolyte may be held in the electrode group.

[0106] In addition, the non-aqueous electrolyte battery according to the second embodiment may further include an exterior member for accommodating the electrode group and the non-aqueous electrolyte.

[0107] In addition, the non-aqueous electrolyte battery according to the second embodiment may further include a positive terminal electrically connected to ...

no. 3 Embodiment approach

[0172] According to the third embodiment, there is provided a battery pack. This battery pack includes the nonaqueous electrolyte battery according to the second embodiment.

[0173] The battery pack according to the third embodiment may include one or more nonaqueous electrolyte batteries (single cells) according to the second embodiment described above. The plurality of non-aqueous electrolyte batteries that can be included in the battery pack according to the third embodiment can also be electrically connected in series or in parallel to form a battery pack. The battery pack according to the third embodiment may include a plurality of battery packs.

[0174] Next, an example of the battery pack according to the third embodiment will be described with reference to the drawings.

[0175] Figure 8 It is an exploded perspective view of an example of the battery pack according to the third embodiment. Figure 9 yes means Figure 8 A block diagram of the battery pack circui...

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Abstract

The present invention provides a battery active material, a nonaqueous electrolyte battery, a battery pack, and a battery pack capable of realizing a nonaqueous electrolyte battery exhibiting high energy density and high battery voltage and having excellent life characteristics. According to one embodiment, an active material for batteries including a composite oxide having an orthorhombic crystal structure can be provided. The composite oxide can be represented by the general formula LixM11‑yM2yTi6‑zM3zO14+δ. However, M1 is at least one selected from Sr, Ba, Ca and Mg. M2 is at least one selected from Cs, K and Na. M3 is at least one selected from Al, Fe, Zr, Sn, V, Nb, Ta, and Mo. x is in the range of 2≤x≤6, y is in the range of 0<y<1, z is in the range of 0<z≤6, and δ is in the range of -0.5≤δ≤0.5.

Description

technical field [0001] Embodiments of the present invention relate to an active material for batteries, a nonaqueous electrolyte battery, a battery pack, and a battery pack. Background technique [0002] In recent years, research and development of non-aqueous electrolyte batteries such as lithium-ion secondary batteries have been actively conducted as high-energy-density batteries. Non-aqueous electrolyte batteries are expected to be used as power sources for hybrid vehicles, electric vehicles, uninterruptible power supplies for mobile phone base stations, and the like. Therefore, nonaqueous electrolyte batteries are required to be excellent in other characteristics such as rapid charge and discharge characteristics and long-term reliability in addition to high energy density. For example, non-aqueous electrolyte batteries that can be charged and discharged quickly can not only greatly shorten the charging time, but also improve the power performance of hybrid vehicles and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/485H01M4/525H01M10/0525H01M2/20H01M50/209H01M50/211H01M50/50
CPCH01M4/485H01M4/525H01M10/0525H01M50/50H01M50/211H01M50/209C01G23/006H01M4/131H01M4/366H01M4/5825H01M4/625C01G25/006C01G31/006C01G33/006C01G35/006C01G39/006C01P2002/50C01P2002/52C01P2002/72C01P2002/74C01P2002/76C01P2006/12C01P2006/40Y02E60/10H01M2004/027
Inventor 原田康宏高见则雄伊势一树
Owner KK TOSHIBA