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

A non-aqueous electrolyte and active material technology, applied in battery/fuel cell control devices, battery electrodes, secondary battery charging/discharging, etc., can solve problems such as difficulty in reducing electrode potential, achieve high energy density, excellent life performance, The effect of high rapid charge and discharge performance

Active Publication Date: 2019-09-27
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is practically 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 vehicle
  • Active material, non-aqueous electrolyte battery, battery pack and vehicle
  • Active material, non-aqueous electrolyte battery, battery pack and vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0023] According to the first embodiment, there is provided an active material for batteries containing a composite oxide having a monoclinic crystal structure. The composite oxide has the general formula Li x M1 4-y Ti 10-z M2 2+z o 27+δ express. Here, M1 is at least one element selected from Na, K, and Cs. M2 is at least one element selected from Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, Ni, and Al. x is in the range of 0≦x<18. y is in the range of 0<y<4. z is in the range of 0<z<4. δ is in the range of -0.3≤δ≤0.3.

[0024] The composite oxide contained in the battery active material of the first embodiment may correspond to the compound oxide represented by the general formula Li x M1 4 Ti 10 M2 2 o 27+δ In the shown composite oxide having a monoclinic crystal structure, a vacancy site is introduced into a part of the M1 site, and at least a part of the Ti site is substituted with an M2 element. By changing the type or amount of the M1 element in the crystal stru...

no. 2 Embodiment approach

[0084] According to the second embodiment, a nonaqueous electrolyte battery is provided. This nonaqueous electrolyte battery includes a negative electrode containing the battery active material of the first embodiment, a positive electrode, and a nonaqueous electrolyte.

[0085] The non-aqueous electrolyte battery of the second embodiment may further include a separator disposed 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.

[0086] In addition, the non-aqueous electrolyte battery of the second embodiment may further include an exterior member for accommodating the electrode group and the non-aqueous electrolyte.

[0087] Furthermore, the non-aqueous electrolyte battery of the second embodiment may further include a positive terminal electrically connected to the positive electrode and a negative termi...

no. 3 Embodiment approach

[0152]According to the third embodiment, a battery pack is provided. This battery pack includes the nonaqueous electrolyte battery of the second embodiment.

[0153] The battery pack of the third embodiment may include one or more non-aqueous electrolyte batteries (single cells) of the second embodiment described above. When a plurality of cells are included, the cells are connected and arranged electrically in series or in parallel. Alternatively, a plurality of non-aqueous electrolyte batteries that may be included in the battery pack according to the third embodiment may be connected electrically in series or in parallel to form a battery pack. The battery pack of the third embodiment may also include a plurality of assembled batteries.

[0154] The battery pack of the third embodiment may further include a protection circuit. The protection circuit controls the charging and discharging of the non-aqueous electrolyte battery. Alternatively, a circuit included in a devic...

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Abstract

The invention provides an active material, a nonaqueous electrolyte battery, a battery pack and a vehicle. According to an embodiment, an active substance is provided. The active substance contains the general formula Li x M1 4‑y Ti 10‑z M2 2+z o 27+δ The composite oxide shown. Here, M1 contains at least one selected from Na, K, and Cs. M2 contains at least one selected from Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, Ni, and Al. x satisfies 0≦x<18. y satisfies 0<y<4. z satisfies 0<z<4. δ satisfies -0.3≤δ≤0.3.

Description

technical field [0001] Embodiments relate to active materials, nonaqueous electrolyte batteries, battery packs, and vehicles. Background technique [0002] In recent years, research and development of non-aqueous electrolyte batteries such as lithium-ion secondary batteries have been in full swing as high-energy-density batteries. Non-aqueous electrolyte batteries are expected to be used as power sources for vehicles such as hybrid cars and electric cars, and uninterruptible power supplies for mobile base stations. In addition, non-aqueous electrolyte batteries are also attracting attention as batteries for stationary power sources such as balancing day and night power consumption and smart grids. Therefore, nonaqueous electrolyte batteries are required to be excellent in other characteristics such as rapid charge and discharge performance and long-term reliability in addition to high energy density. For example, a non-aqueous electrolyte battery capable of rapid charge an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/485H01M4/505H01M4/525H01M10/0525H01M50/211H01M50/249H01M50/296
CPCH01M4/485H01M4/505H01M4/525H01M10/0525H01M2220/20H01M50/296H01M50/211H01M10/486H01M50/249C01G23/005C01G33/006C01P2002/76C01P2002/77C01P2002/88C01P2006/40Y02P20/133B60L58/21Y02E60/10Y02T10/70H01M4/131H01M10/44H01M50/581
Inventor 原田康宏高见则雄吉田赖司
Owner KK TOSHIBA
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