Battery and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9917326-B2
Application number	US-201214347125-A
Country	US
Kind code	B2
Filing date	Sep 28, 2012
Priority date	Oct 6, 2011
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

A battery capable of improving ionic conduction is provided. The battery includes a cathode, an anode, and a solid electrolyte layer. One or more of the cathode, the anode, and the solid electrolyte layer includes a solid electrolyte binder.

First claim

The invention claimed is:

1. A battery, comprising:
a cathode;
an anode;
a solid electrolyte layer including a polymer material; and
at least two types of solid electrolyte binders, wherein a first type of solid electrolyte binder of the at least two types of solid electrolyte binders has a first glass transition temperature and a second type of solid electrolyte binder of the at least two types of solid electrolyte binders has a second glass transition temperature, wherein each of the at least two types of solid electrolyte binders has at least one Li x MO y bond, where M is a glass-forming element, and x and y have values based on the glass-forming element,
wherein each of the cathode, the anode, and the solid electrolyte layer includes the at least two types of solid electrolyte binders.

2. The battery according to claim 1 , wherein
the cathode and the anode include an active material capable of insertion and extraction of an electrode reactant, and
each of the at least two types of solid electrolyte binders includes an element of the electrode reactant, the glass-forming element, and one of oxygen (O) or sulfur (S) as constituent elements.

3. The battery according to claim 2 , wherein each of the at least two types of solid electrolyte binders is glassy.

4. The battery according to claim 2 , wherein
the electrode reactant is lithium (Li), and
one of the at least two types of solid electrolyte binders includes lithium as a constituent element.

5. The battery according to claim 2 , wherein the glass-forming element is at least one of germanium (Ge), arsenic (As), tellurium (Te), gallium (Ga), titanium (Ti), bismuth (Bi), tungsten (W), molybdenum (Mo), niobium (Nb), or vanadium (V).

6. The battery according to claim 2 , wherein, the at least two types of solid electrolyte binders are configured to flow into at least gaps between the active material by capillarity based on a heating of the at least two types of solid electrolyte binders at a temperature equal to or higher than the first glass transition temperature or the second glass transition temperature.

7. The battery according to claim 1 , wherein the solid electrolyte layer includes a crystalline solid electrolyte of the polymer material, and at least one of the cathode or the anode include the crystalline solid electrolyte, wherein the crystalline solid electrolyte includes a sulfide or an oxide.

8. The battery according to claim 1 , wherein the polymer material includes polyethylene oxide.

9. The battery according to claim 2 , wherein one of the at least two types of solid electrolyte binders further includes a halogen element as one of the constituent elements.

10. An electronic apparatus, comprising:
a battery, wherein the battery includes:
a cathode;
an anode;
a solid electrolyte layer including a polymer material; and
at least two types of solid electrolyte binders, wherein a first type of solid electrolyte binder of the at least two types of solid electrolyte binders has a first glass transition temperature and a second type of solid electrolyte binder of the at least two types of solid electrolyte binders has a second glass transition temperature, wherein each of the at least two types of solid electrolyte binders has at least one Li x MO y bond, where M is a glass-forming element, and x and y have values based on the glass-forming element,
wherein each of the cathode, the anode, and the solid electrolyte layer includes the at least two types of solid electrolyte binders.

11. An electric vehicle, comprising:
a battery, wherein the battery includes:
a cathode;
an anode;
a solid electrolyte layer including a polymer material; and
at least two types of solid electrolyte binders, wherein a first type of solid electrolyte binder of the at least two types of solid electrolyte binders has a first glass transition temperature and a second type of solid electrolyte binder of the at least two types of solid electrolyte binders has a second glass transition temperature, wherein each of the at least two types of solid electrolyte binders has at least one Li x MO y bond, where M is a glass-forming element, and x and y have values based on the glass-forming element,
wherein each of the cathode, the anode, and the solid electrolyte layer includes the at least two types of solid electrolyte binders.

12. The battery according to claim 1 , wherein the at least two types of solid electrolyte binders are configured to be heated to a higher temperature among the first glass transition temperature and the second glass transition temperature.

13. The battery according to claim 1 , wherein the anode is laminated with the cathode with the solid electrolyte layer between the anode and the cathode, and wherein the at least two types of solid electrolyte binders bind a cathode active material of the cathode with the solid electrolyte layer, and the at least two types of solid electrolyte binders bind an anode active material of the anode with the solid electrolyte layer.

Assignees

• Sony Corp
• Murata Manufacturing Co

Inventors

• Furukawa Keiko
• Furuya Tatsuya

Classifications

• H01M10/0562 Primary

  Solid materials · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M2300/0068

  inorganic · CPC title

• H01M4/62 Primary

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title