JPWO2020150240A5

JPWO2020150240A5 -

Info

Publication number: JPWO2020150240A5
Application number: JP2021540107A
Authority: JP
Publication date: 2023-01-25
Anticipated expiration: 2040-01-14

Description

第１の態様では、エネルギー貯蔵デバイスの乾燥電極フィルムが提供される。乾燥電極フィルムは、乾燥活物質を含む。乾燥電極フィルムは、乾燥バインダをさらに含む。乾燥電極のさらなるフィルムは、乾燥活物質及び乾燥バインダの全体に分布した乾燥プレリチウム化材料（a dry prelithiating material）を含む。乾燥電極フィルムは自立型（ｆｒｅｅ－ｓｔａｎｄｉｎｇ）である。 In a first aspect, a dry electrode film for an energy storage device is provided. A dry electrode film includes a dry active material. The dry electrode film further includes a dry binder. A further film of dry electrode comprises a dry prelithiating material distributed throughout the dry active material and dry binder. The dry electrode film is free-standing.

Claims

A dry electrode film for an energy storage device , comprising:
a dry active material ;
a dry binder ;
a dry prelithiated material uniformly distributed throughout the dry active material and the dry binder ;
including
the dry electrode film is self-supporting and free of solvent residues;
Dry electrode film.

The dry electrode film of claim 1,
_Said dry _prelithiated materials _are Li2O , _Li2O2 , _Li2S _, _Li3N , _LiN3 , _LiF , _Li5FeO4 , _Li2NiO2 , _Li6CoO4 and _Li2MoO . A dry electrode film selected from the group consisting of ₃ or combinations thereof.

In the dry electrode film according to claim 1 or 2 ,
A dry electrode film, wherein said dry _prelithiated material is _Li2O2 .

In the dry electrode film according to any one of claims 1 to 3 ,
The dry prelithiated material comprises 0.0% of the dry electrode film. A dry electrode film, comprising 5-10% by weight.

In the dry electrode film according to any one of claims 1 to 4 ,
A dry electrode film, wherein the dry active material is a dry cathode active material.

A dry electrode film according to claim 5, wherein
A dry electrode film, wherein the dry cathode active material comprises sulfur or a sulfur-containing material.

In the dry electrode film according to any one of claims 1 to 6,
A dry electrode film, wherein the dry prelithiated material is free of elemental lithium metal.

An energy storage device comprising a dry electrode film according to any one of claims 1-7.

The energy storage device of claim 8 , wherein
An energy storage device, wherein the energy storage device is a battery.

A method for dry manufacturing a dry electrode film for an energy storage device , comprising:
mixing the dry prelithiated material and the dry conductive carbon additive to form a first dry mixture;
mixing the first dry mixture with a dry active material to form a second dry mixture;
adding a dry fibrillatable binder to the second dry mixture to form a dry electrode film mixture ;
fibrillating the dry fibrillatable binder in the dry electrode film mixture ;
including
The manufacturing method, wherein the dry manufacturing method is a solvent-free dry manufacturing process .

In the manufacturing method according to claim 10 ,
A method of manufacturing, further comprising calendering the dry electrode film mixture to form a free-standing dry electrode film.

In the manufacturing method according to claim 11 ,
A method of manufacturing, further comprising placing the free-standing dry electrode film on a current collector to form an electrode.

In the manufacturing method according to claim 12 ,
incorporating the electrode into an energy storage device;
performing an initial cycle of the energy storage device, thereby oxidizing the prelithiated material ;
A method of manufacturing, further comprising:

In the production method according to any one of claims 10 to 13 ,
The method of manufacturing, wherein mixing the first dry mixture and the dry active material further comprises mixing a dry carbon material and a dry conductive carbon material to form the second dry mixture.

In the production method according to any one of claims 10 to 14 ,
The method of manufacture, wherein mixing the dry prelithiated material and the dry conductive carbon additive is performed such that the temperature of the first mixture is at most 150°C.

In the production method according to any one of claims 10 to 15 ,
A method of manufacture wherein mixing said dry prelithiated material and said dry conductive carbon additive is performed such that the temperature of the first mixture is at most 100 °C.

In the production method according to any one of claims 10 to 16 ,
A method of manufacturing wherein mixing the dry prelithiated material and the dry conductive carbon additive creates electrical contact between the primary particles of the prelithiated material and the conductive carbon additive.

In the production method according to any one of claims 10 to 17 ,
The method of manufacture, wherein mixing the dry prelithiated material and the dry conductive carbon additive is performed without excessively heating the first dry mixture.

In the production method according to any one of claims 10 to 18 ,
The method of manufacture, wherein the ratio of said dry prelithiated material to said dry conductive carbon additive is between 1 0:1 and 1 :1.

In the production method according to any one of claims 10 to 19 ,
The method of manufacture, wherein the ratio of said dry prelithiated material to said dry conductive carbon additive is from 5 :1 to 5 :3.

In the production method according to any one of claims 10 to 20 ,
The method of manufacture, wherein mixing the first dry mixture and the dry active material is performed such that the temperature of the second mixture is at most 100 °C.

In the production method according to any one of claims 10 to 21,
The method of manufacture, wherein mixing the dry prelithiated material and the dry conductive carbon additive is performed such that the temperature of the first dry mixture is at most 200°C.

In the production method according to any one of claims 10 to 22,
The method of manufacture, wherein the dry prelithiated material is free of elemental lithium metal.