JP2016119212A5

JP2016119212A5 -

Info

Publication number: JP2016119212A5
Application number: JP2014257985A
Authority: JP
Filing date: 2014-12-19
Publication date: 2017-09-28
Anticipated expiration: 2034-12-19

Description

なお、本技術は、以下の構成をとることもできる。
［１］
正極活物質粒子を含む正極活物質層を有する正極と、
負極活物質粒子を含む負極活物質層を有する負極と、
前記正極活物質層および前記負極活物質層の間にあるセパレータと、
電解液を含む電解質と、
固体粒子と
を備え、
負極側の窪み含浸領域および負極側の深部領域、並びに、正極側の窪み含浸領域および正極側の深部領域の少なくとも一方の窪み含浸領域および深部領域
を有し、
前記負極側の窪み含浸領域は、前記電解質および前記固体粒子が配置された、前記負極活物質層の最表面に位置する隣接負極活物質粒子間の窪みを含む領域であり、
前記負極側の深部領域は、前記電解質または前記電解質および前記固体粒子が配置された、前記負極側の窪み含浸領域より深い側にある前記負極活物質層内部の領域であり、
前記正極側の窪み含浸領域は、前記電解質および前記固体粒子が配置された、前記正極活物質層の最表面に位置する隣接正極活物質粒子間の窪みを含む領域であり、
前記正極側の深部領域は、前記電解質または前記電解質および前記固体粒子が配置された、前記正極側の窪み含浸領域より深い側にある前記正極活物質層内部の領域であり、
前記少なくとも一方の窪み含浸領域の固体粒子の濃度は、３０体積％以上であり、
前記電解液は、下記式（１）で表されるジニトリル化合物の少なくとも１種を含む電池。

（式中、Ｒ６１は２価の炭化水素基または２価のハロゲン化炭化水素基である。）
［２］
前記負極側の窪み含浸領域および負極側の深部領域、並びに、正極側の窪み含浸領域および正極側の深部領域を有する［１］に記載の電池。
［３］
前記負極側の窪み含浸領域および前記負極側の深部領域、または、前記正極側の窪み含浸領域および前記正極側の深部領域を有する［１］又は［２］に記載の電池。
［４］
前記少なくとも一方の深部領域の固体粒子濃度は、３体積％以下である［１］〜［３］の何れか一に記載の電池。
［５］
前記少なくとも一方の窪み含浸領域の前記固体粒子濃度は、前記少なくとも一方の窪み含浸領域と同一電極側の前記深部領域の固体粒子濃度の１０倍以上である［１］〜［４］の何れか一に記載の電池。
［６］
前記負極側の窪み含浸領域の厚さは、前記負極活物質層の厚さの１０％以上４０％以下である［１］〜［５］の何れか一に記載の電池。
［７］
前記少なくとも一方の窪み含浸領域に含まれる前記固体粒子の粒子径Ｄ９５は、活物質粒子の粒子径Ｄ５０の２／√３−１倍以上である［１］〜［６］の何れか一に記載の電池。
［８］
前記少なくとも一方の窪み含浸領域に含まれる前記固体粒子の粒子径Ｄ５０は、活物質粒子の粒子径Ｄ５０の２／√３−１倍以下である［１］〜［７］の何れか一に記載の電池。
［９］
前記固体粒子のＢＥＴ比表面積は、１ｍ²／ｇ以上６０ｍ²／ｇ以下である［１］〜［８］の何れか一に記載の電池。
［１０］
前記式（１）で表されるジニトリル化合物の含有量は、０．０１質量％以上１０質量％以下である［１］〜［９］の何れか一に記載の電池。
［１１］
前記固体粒子は、無機粒子および有機粒子の少なくとも何れかである［１］〜［１０］の何れか一に記載の電池。
［１２］
前記無機粒子は、酸化ケイ素、酸化亜鉛、酸化スズ、酸化マグネシウム、酸化アンチモン、酸化アルミニウム、硫酸マグネシウム、硫酸カルシウム、硫酸バリウム、硫酸ストロンチウム、炭酸マグネシウム、炭酸カルシウム、炭酸バリウム、炭酸リチウム、水酸化マグネシウム、水酸化アルミニウム、水酸化亜鉛、ベーマイト、ホワイトカーボン、酸化ジルコニウム水和物、酸化マグネシウム水和物、水酸化マグネシウム８水和物、炭化ホウ素、窒化ケイ素、窒化ホウ素、窒化アルミニウム、窒化チタン、フッ化リチウム、フッ化アルミニウム、フッ化カルシウム、フッ化バリウム、フッ化マグネシウム、リン酸トリリチウム、リン酸マグネシウム、リン酸水素マグネシウム、ポリリン酸アンモニウム、ケイ酸塩鉱物、炭酸塩鉱物、酸化鉱物からなる群から選ばれた少なくとも何れかの粒子であり、
前記有機粒子は、メラミン、メラミンシアヌレート、ポリリン酸メラミン、架橋ポリメタクリル酸メチル、ポリオレフィン、ポリエチレン、ポリプロピレン、ポリスチレン、ポリテトラフルオロエチレン、ポリビニリデンフルオリド、ポリアミド、ポリイミド、メラミン樹脂、フェノール樹脂、エポキシ樹脂からなる群から選ばれた少なくとも何れかの粒子である［１１］に記載の電池。
［１３］
前記ケイ酸塩鉱物は、タルク、ケイ酸カルシウム、ケイ酸亜鉛、ケイ酸ジルコニウム、ケイ酸アルミニウム、ケイ酸マグネシウム、カオリナイト、セピオライト、イモゴライト、セリサイト、パイロフィライト、雲母、ゼオライト、ムライト、サポナイト、アタパルジャイト、モンモリロナイトからなる群から選ばれた少なくとも１種であり、
前記炭酸塩鉱物は、ハイドロタルサイト、ドロマイトからなる群から選ばれた少なくとも１種であり、
前記酸化鉱物は、スピネルである［１２］に記載の電池。
［１４］
前記電解質は、前記電解液を保持した高分子化合物をさらに含む［１］〜［１３］の何れか一に記載の電池
［１５］
前記電解質は、ゲル状の電解質である［１］〜［１４］のいずれか一に記載の電池。
［１６］
［１］〜［１５］の何れか一に記載の電池と、
前記電池を制御する制御部と、
前記電池を内包する外装と
を有する電池パック。
［１７］
［１］〜［１５］の何れか一に記載の電池を有し、前記電池から電力の供給を受ける電子機器。
［１８］
［１］〜［１５］の何れか一に記載の電池と、
前記電池から電力の供給を受けて車両の駆動力に変換する変換装置と、
前記電池に関する情報に基づいて車両制御に関する情報処理を行う制御装置と
を有する電動車両。
［１９］
［１］〜［１５］の何れか一に記載の電池を有し、前記電池に接続される電子機器に電力を供給する蓄電装置。
［２０］
他の機器とネットワークを介して信号を送受信する電力情報制御装置を備え、
前記電力情報制御装置が受信した情報に基づき、前記電池の充放電制御を行う［１９］に記載の蓄電装置。
［２１］
［１］〜［１５］の何れか一に記載の電池から電力の供給を受け、または、発電装置もしくは電力網から前記電池に電力が供給される電力システム。 In addition, this technique can also take the following structures.
[1]
A positive electrode having a positive electrode active material layer containing positive electrode active material particles;
A negative electrode having a negative electrode active material layer containing negative electrode active material particles;
A separator between the positive electrode active material layer and the negative electrode active material layer;
An electrolyte containing an electrolyte solution;
With solid particles,
A negative electrode side depression impregnation region and a negative electrode side deep region, and a positive electrode side depression impregnation region and a positive electrode side deep region at least one of the depression impregnation region and the deep region;
The depression-impregnated region on the negative electrode side is a region including a depression between adjacent negative electrode active material particles located on the outermost surface of the negative electrode active material layer, in which the electrolyte and the solid particles are arranged,
The deep region on the negative electrode side is a region inside the negative electrode active material layer on the deeper side than the depression-impregnated region on the negative electrode side where the electrolyte or the electrolyte and the solid particles are arranged,
The depression-impregnated region on the positive electrode side is a region including a depression between adjacent positive electrode active material particles located on the outermost surface of the positive electrode active material layer where the electrolyte and the solid particles are arranged,
The deep region on the positive electrode side is a region inside the positive electrode active material layer on the deeper side than the depression-impregnated region on the positive electrode side where the electrolyte or the electrolyte and the solid particles are arranged.
The concentration of the solid particles in the at least one depression-impregnated region is 30% by volume or more,
The battery includes at least one kind of dinitrile compound represented by the following formula (1).

(In the formula, R61 represents a divalent hydrocarbon group or a divalent halogenated hydrocarbon group.)
[2]
[1] The battery according to [1], including the negative electrode side depression-impregnated region and the negative electrode side deep region, and the positive electrode side depression-impregnated region and positive electrode side deep region.
[3]
The battery according to [1] or [2] , wherein the battery has a dip-impregnated region on the negative electrode side and a deep region on the negative electrode side, or a dip-impregnated region on the positive electrode side and a deep region on the positive electrode side.
[4]
The battery according to any one of [1] to [3], wherein the solid particle concentration in the at least one deep region is 3% by volume or less.
[5]
The solid particle concentration in the at least one depression-impregnated region is any one of [1] to [4] that is 10 times or more the solid particle concentration in the deep region on the same electrode side as the at least one depression-impregnated region. The battery described in 1.
[6]
The battery according to any one of [1] to [5], wherein the thickness of the depression-impregnated region on the negative electrode side is 10% to 40% of the thickness of the negative electrode active material layer.
[7]
The particle diameter D95 of the solid particles contained in the at least one hollow impregnation region is 2 / √3-1 times or more of the particle diameter D50 of the active material particles, according to any one of [1] to [6]. Battery.
[8]
The particle diameter D50 of the solid particles contained in the at least one hollow impregnation region is 2 / √3-1 times or less of the particle diameter D50 of the active material particles, according to any one of [1] to [7]. Battery.
[9]
The battery according to any one of [1] to [8], wherein the BET specific surface area of the solid particles is 1 m ² / g or more and 60 m ² / g or less.
[10]
Content of the dinitrile compound represented by the said Formula (1) is a battery as described in any one of [1]-[9] which is 0.01 mass% or more and 10 mass% or less.
[11]
The battery according to any one of [1] to [10], wherein the solid particles are at least one of inorganic particles and organic particles.
[12]
The inorganic particles are silicon oxide, zinc oxide, tin oxide, magnesium oxide, antimony oxide, aluminum oxide, magnesium sulfate, calcium sulfate, barium sulfate, strontium sulfate, magnesium carbonate, calcium carbonate, barium carbonate, lithium carbonate, magnesium hydroxide. , Aluminum hydroxide, zinc hydroxide, boehmite, white carbon, zirconium oxide hydrate, magnesium oxide hydrate, magnesium hydroxide octahydrate, boron carbide, silicon nitride, boron nitride, aluminum nitride, titanium nitride, fluorine Lithium fluoride, aluminum fluoride, calcium fluoride, barium fluoride, magnesium fluoride, trilithium phosphate, magnesium phosphate, magnesium hydrogen phosphate, ammonium polyphosphate, silicate mineral, carbonate mineral, oxide mineral At least one of particles selected from Ranaru group,
The organic particles include melamine, melamine cyanurate, melamine polyphosphate, cross-linked polymethyl methacrylate, polyolefin, polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyvinylidene fluoride, polyamide, polyimide, melamine resin, phenol resin, epoxy The battery according to [11], which is at least one particle selected from the group consisting of resins.
[13]
The silicate mineral is talc, calcium silicate, zinc silicate, zirconium silicate, aluminum silicate, magnesium silicate, kaolinite, sepiolite, imogolite, sericite, pyrophyllite, mica, zeolite, mullite, saponite. At least one selected from the group consisting of attapulgite and montmorillonite,
The carbonate mineral is at least one selected from the group consisting of hydrotalcite and dolomite,
The battery according to [12], wherein the oxide mineral is spinel.
[14]
The battery according to any one of [1] to [13], wherein the electrolyte further includes a polymer compound that holds the electrolytic solution.
The battery according to any one of [1] to [14], wherein the electrolyte is a gel electrolyte.
[ 16 ]
The battery according to any one of [1] to [ 15 ];
A control unit for controlling the battery;
A battery pack having an exterior housing the battery.
[ 17 ]
[1] An electronic device including the battery according to any one of [ 15 ] and receiving power supply from the battery.
[ 18 ]
The battery according to any one of [1] to [ 15 ];
A conversion device that receives supply of electric power from the battery and converts it into driving force of a vehicle;
An electric vehicle comprising: a control device that performs information processing related to vehicle control based on information related to the battery.
[ 19 ]
[1] A power storage device that includes the battery according to any one of [ 15 ] and supplies electric power to an electronic device connected to the battery.
[ 20 ]
A power information control device that transmits and receives signals to and from other devices via a network,
The power storage device according to [ 19 ], wherein charge / discharge control of the battery is performed based on information received by the power information control device.
[ 21 ]
The electric power system which receives supply of electric power from the battery as described in any one of [1]-[ 15 ], or supplies electric power to the said battery from an electric power generating apparatus or an electric power network.

Claims

A positive electrode having a positive electrode active material layer containing positive electrode active material particles;
A negative electrode having a negative electrode active material layer containing negative electrode active material particles;
A separator between the positive electrode active material layer and the negative electrode active material layer;
An electrolyte containing an electrolyte solution;
With solid particles,
A negative electrode side depression impregnation region and a negative electrode side deep region, and a positive electrode side depression impregnation region and a positive electrode side deep region at least one of the depression impregnation region and the deep region;
The depression-impregnated region on the negative electrode side is a region including a depression between adjacent negative electrode active material particles located on the outermost surface of the negative electrode active material layer, in which the electrolyte and the solid particles are arranged,
The deep region on the negative electrode side is a region inside the negative electrode active material layer on the deeper side than the depression-impregnated region on the negative electrode side where the electrolyte or the electrolyte and the solid particles are arranged,
The depression-impregnated region on the positive electrode side is a region including a depression between adjacent positive electrode active material particles located on the outermost surface of the positive electrode active material layer where the electrolyte and the solid particles are arranged,
The deep region on the positive electrode side is a region inside the positive electrode active material layer on the deeper side than the depression-impregnated region on the positive electrode side where the electrolyte or the electrolyte and the solid particles are arranged.
The concentration of the solid particles in the at least one depression-impregnated region is 30% by volume or more,
The battery includes at least one kind of dinitrile compound represented by the following formula (1).

(In the formula, R61 represents a divalent hydrocarbon group or a divalent halogenated hydrocarbon group.)

2. The battery according to claim 1, wherein the battery has a recess-impregnated region on the negative electrode side and a deep region on the negative electrode side, and a recess-impregnated region on the positive electrode side and a deep region on the positive electrode side.

3. The battery according to claim 1, further comprising: a depression-impregnated region on the negative electrode side and a deep region on the negative electrode side, or a depression-impregnated region on the positive electrode side and a deep region on the positive electrode side.

The battery according to any one of claims 1 to 3, wherein the solid particle concentration in the at least one deep region is 3% by volume or less.

Wherein said solid particle concentration of at least one of the recesses impregnation zone, said at least one of the recesses the impregnation region of the same electrode side is at least 10 times the solid particle concentration of the deep region claimed in any one of the 4 Battery.

The battery according to any one of claims 1 to 5 , wherein a thickness of the depression-impregnated region on the negative electrode side is 10% or more and 40% or less of a thickness of the negative electrode active material layer.

The battery according to any one of claims 1 to 6, wherein a particle diameter D95 of the solid particles contained in the at least one recess-impregnated region is 2 / √3-1 times or more of a particle diameter D50 of the active material particles. .

The battery according to any one of claims 1 to 7, wherein a particle diameter D50 of the solid particles contained in the at least one depression impregnation region is 2 / √3-1 times or less of a particle diameter D50 of the active material particles. .

The battery according to any one of claims 1 to 8, wherein a BET specific surface area of the solid particles is 1 m ² / g or more and 60 m ² / g or less.

The battery according to any one of claims 1 to 9, wherein a content of the dinitrile compound represented by the formula (1) is 0.01% by mass or more and 10% by mass or less.

The battery according to claim 1, wherein the solid particles are at least one of inorganic particles and organic particles.

The inorganic particles are silicon oxide, zinc oxide, tin oxide, magnesium oxide, antimony oxide, aluminum oxide, magnesium sulfate, calcium sulfate, barium sulfate, strontium sulfate, magnesium carbonate, calcium carbonate, barium carbonate, lithium carbonate, magnesium hydroxide. , Aluminum hydroxide, zinc hydroxide, boehmite, white carbon, zirconium oxide hydrate, magnesium oxide hydrate, magnesium hydroxide octahydrate, boron carbide, silicon nitride, boron nitride, aluminum nitride, titanium nitride, fluorine Lithium fluoride, aluminum fluoride, calcium fluoride, barium fluoride, magnesium fluoride, trilithium phosphate, magnesium phosphate, magnesium hydrogen phosphate, ammonium polyphosphate, silicate mineral, carbonate mineral, oxide mineral At least one of particles selected from Ranaru group,
The organic particles include melamine, melamine cyanurate, melamine polyphosphate, cross-linked polymethyl methacrylate, polyolefin, polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, polyvinylidene fluoride, polyamide, polyimide, melamine resin, phenol resin, epoxy The battery according to claim 11, wherein the battery is at least one particle selected from the group consisting of resins.

The silicate mineral is talc, calcium silicate, zinc silicate, zirconium silicate, aluminum silicate, magnesium silicate, kaolinite, sepiolite, imogolite, sericite, pyrophyllite, mica, zeolite, mullite, saponite. At least one selected from the group consisting of attapulgite and montmorillonite,
The carbonate mineral is at least one selected from the group consisting of hydrotalcite and dolomite,
The battery according to claim 12, wherein the oxide mineral is spinel.

The battery according to claim 1, wherein the electrolyte further includes a polymer compound that holds the electrolytic solution.

The battery according to claim 1, wherein the electrolyte is a gel electrolyte.

A battery according to any one of claims 1 to 15 ,
A control unit for controlling the battery;
A battery pack having an exterior housing the battery.

Has a battery according to any one of claims 1 to 15, the electronic device receiving power supply from the battery.

A battery according to any one of claims 1 to 15 ,
A conversion device that receives supply of electric power from the battery and converts it into driving force of a vehicle;
An electric vehicle comprising: a control device that performs information processing related to vehicle control based on information related to the battery.

It has a battery as claimed in any one of 15, the power storage device supplies power to an electronic device connected to the battery.

A power information control device that transmits and receives signals to and from other devices via a network,
The power storage device according to claim 19 , wherein charge / discharge control of the battery is performed based on information received by the power information control device.

The electric power system which receives supply of electric power from the battery as described in any one of Claims 1-15 , or supplies electric power to the said battery from an electric power generating apparatus or an electric power network.