Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Active material, nonaqueous electrolyte battery, and battery pack

A technology of active materials and carbon materials, applied in non-aqueous electrolyte batteries, active material electrodes, battery electrodes, etc., can solve problems such as energy density reduction

Inactive Publication Date: 2015-01-14
KK TOSHIBA
View PDF6 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy density decreases

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Active material, nonaqueous electrolyte battery, and battery pack
  • Active material, nonaqueous electrolyte battery, and battery pack
  • Active material, nonaqueous electrolyte battery, and battery pack

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0020] According to the first embodiment, there is provided an active material including monoclinic niobium-titanium composite oxide particles and a carbon material layer. The monoclinic niobium-titanium composite oxide particles can absorb and release Li ions or Na ions and satisfy the following formula (1). The carbon material layer covers at least a part of the surface of the niobium-titanium composite oxide particle and satisfies the following formula (2):

[0021] 0.5≤(α / β)≤2 (1)

[0022] 0≤(γ / σ)≤0.1 (2)

[0023] where α represents the number of moles of Nb in the niobium-titanium composite oxide particles, β represents the number of moles of Ti in the niobium-titanium composite oxide particles, γ represents the number of hydrogen atoms in the carbon material layer, and σ represents the number of carbon atoms in the carbon material layer number.

[0024] The higher ratio (α / β) of the moles of Nb to the moles of Ti in the monoclinic niobium-titanium composite oxide part...

no. 2 approach

[0045] According to the second embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode contains the active material of the first embodiment. The battery of the second embodiment may include a separator disposed between the positive electrode and the negative electrode and may further include a case housing these electrodes and the non-aqueous electrolyte.

[0046] Hereinafter, the negative electrode, positive electrode, nonaqueous electrolyte, separator, and case will be described.

[0047] 1) Negative electrode

[0048] The negative electrode includes a negative electrode current collector, and a negative electrode material layer including the active material according to the first embodiment, a conductive agent, and a binder, the negative electrode material layer being supported on one surface or both sides of the current collector.

[0049] It is preferable to...

no. 3 approach

[0096] A battery pack according to the third embodiment includes one or more nonaqueous electrolyte batteries according to the second embodiment. The battery pack may include a battery module including a plurality of batteries. The cells can be connected in series or in parallel. They are preferably connected in series. The number of batteries connected in series is preferably n times 6 (n represents an integer of 1 or more).

[0097] An embodiment of a battery module for a battery pack is shown in image 3 middle. According to a second embodiment, image 3 The battery module 21 shown in contains a plurality of prismatic secondary batteries 22 1 to 22 5 . Secondary battery 22 1 The positive electrode conductive sheet 8 is adjacent to the secondary battery 22 1 Positioning of the secondary battery 22 2 The negative electrode conductive sheet 9 is electrically connected by a lead wire 23 . In addition, the secondary battery 22 2 The positive electrode conductive shee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

According to one embodiment, there is provided an active material including monoclinic niobium titanium composite oxide particles and a carbon material layer. The monoclinic niobium titanium composite oxide particles can absorb and release Li ions or Na ions and satisfy Formula (1) below. The carbon material layer covers at least a part of surfaces of the niobium titanium composite oxide particles and satisfies Formula (2) below: 0.5≰(α / β)≰2  (1) 0≰(γ / σ)≰0.1  (2)

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority from prior Japanese Patent Application No. 2013-142497 filed on July 8, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] Embodiments described herein relate generally to active materials, nonaqueous electrolyte cells, and batteries. Background technique [0004] Nonaqueous electrolyte batteries prepared by using graphite materials or carbonaceous materials that absorb and release lithium ions for the negative electrode have been commercialized as high-energy-density batteries for portable devices. In recent years, Ni-containing lithium metal oxides such as LiNi a co b al 1-a-b o 2 or LiNi a co b mn 1-a-b o 2 As a cathode active material to replace LiCoO 2 or LiMn 2 o 4 To improve the energy density of the battery. [0005] On the other hand, in the case of installing batteries in vehicles such as automobiles or...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/485H01M10/39
CPCH01M4/625H01M4/366H01M4/362H01M4/483H01M4/583H01M10/0525H01M2004/027H01M4/131H01M10/05H01M10/052H01M10/054H01M2004/021Y02E60/10H01M4/48H01M4/485H01M4/62
Inventor 高见则雄原田康宏伊势一树吉田赖司
Owner KK TOSHIBA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com