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Electrode, nonaqueous electrolyte battery, battery pack and vehicle

A non-aqueous electrolyte and electrode technology, which is applied in the field of non-aqueous electrolyte batteries and electrodes, can solve the problems of low battery voltage and achieve excellent life characteristics

Active Publication Date: 2018-10-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the battery voltage of the non-aqueous electrolyte battery using lithium titanate having a spinel crystal structure in the negative electrode is low

Method used

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  • Electrode, nonaqueous electrolyte battery, battery pack and vehicle
  • Electrode, nonaqueous electrolyte battery, battery pack and vehicle
  • Electrode, nonaqueous electrolyte battery, battery pack and vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0034] According to the first embodiment, an electrode and a non-aqueous electrolyte battery are provided. The non-aqueous electrolyte battery includes the electrode as a negative electrode, a positive electrode, and a non-aqueous electrolyte. The negative electrode is provided with a negative electrode active material-containing layer. The negative electrode active material-containing layer contains Na-containing niobium-titanium composite oxide having an orthorhombic crystal structure. The negative electrode active material layer satisfies I 2 / I 1 ≥1. I 1 It is the peak P that appears in the binding energy range of 289 to 292 eV in the X-ray photoelectron spectroscopy obtained by X-ray photoelectron spectroscopy for the negative electrode-containing active material layer 1 Strength of. I 2 It is the peak P that appears in the binding energy range of 283~285eV in the X-ray photoelectron spectrum of the negative electrode active material layer 2 Strength of.

[0035] The Na-c...

no. 2 Embodiment approach

[0222] According to the second embodiment, a battery pack is provided. This battery pack includes the non-aqueous electrolyte battery described in the first embodiment.

[0223] The battery pack described in this embodiment may include one non-aqueous electrolyte battery, or may include a plurality of non-aqueous electrolyte batteries. The plurality of non-aqueous electrolyte batteries that can be contained in the battery pack may be connected in series, parallel, or a combination of series and parallel. A plurality of non-aqueous electrolyte batteries may be electrically connected to form an assembled battery. The battery pack can also contain multiple battery packs.

[0224] The battery pack may be further equipped with a protection circuit. The protection circuit is a circuit that controls the charging and discharging of the non-aqueous electrolyte battery. In addition, a circuit included in a device that uses the battery pack as a power source (for example, electronic equip...

no. 3 Embodiment approach

[0242] According to a third embodiment, a vehicle is provided. This vehicle is equipped with the battery pack described in the second embodiment.

[0243] In the vehicle described in the third embodiment, the battery pack is, for example, a battery pack that recovers regenerative energy of the power of the vehicle.

[0244] Examples of the vehicle described in the third embodiment include, for example, two-wheel to four-wheel hybrid electric vehicles, two- to four-wheel electric vehicles, assisted bicycles, and railway vehicles (such as trams).

[0245] The mounting position of the battery pack in the vehicle according to the third embodiment is not particularly limited. For example, when the battery pack is mounted on a car, the battery pack can be mounted in the engine room of the vehicle, behind the car body, or under the seat.

[0246] Next, an example of a vehicle of the third embodiment will be described with reference to the drawings.

[0247] Figure 8 It is a schematic cross-...

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Abstract

The invention relates to an electrode, a nonaqueous electrolyte battery, a battery pack and a vehicle. The invention provides an electrode excellent in service performance. According to one approach,an electrode (3) is provided. The electrode (3) includes an active material-containing layer (3b). The active material-containing layer (3b) includes a Na-containing niobium-titanium composite oxide having an orthorhombic crystal structure. The active material-containing layer (3b) satisfies I2 / I1>=1. I1 is an intensity of a peak P1 appearing in a binding energy range of 289 eV to 292 eV in an X-ray photoelectron spectroscopy spectrum of the active material-containing layer (3b). I2 is an intensity of a peak P2 appearing in a binding energy range of 283 eV to 285 eV in the X-ray photoelectronspectroscopy spectrum of the active material-containing layer (3b).

Description

Technical field [0001] Embodiments of the present invention relate to electrodes, non-aqueous electrolyte batteries, battery packs, and vehicles. Background technique [0002] A non-aqueous electrolyte battery in which lithium ions move in a negative electrode and a positive electrode to perform charge and discharge has been extensively studied as a high energy density battery. [0003] This non-aqueous electrolyte battery is not only used as a power source for small electronic devices, but also is expected to be used as a medium-to-large power source for in-vehicle use or stationary use. In such medium and large-scale applications, non-aqueous electrolyte batteries are required to have life characteristics and high safety. Furthermore, non-aqueous electrolyte batteries also require high input and output characteristics. [0004] As an example of a non-aqueous electrolyte battery having life characteristics and high safety, a non-aqueous electrolyte battery using lithium titanate h...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/48H01M10/05
CPCH01M4/362H01M4/48H01M10/05C01G23/005H01M4/0445H01M4/485H01M10/052H01M10/0525H01M2004/027H01M2220/20C01G33/00C01G33/006C01P2002/85C01P2004/61Y02E60/10Y02P20/133Y02T10/70H01M4/131H01M4/133
Inventor 并木佑介保科圭吾原田康宏高见则雄
Owner KK TOSHIBA