JP7364295B1 - 蓄電池用薄膜集電体 - Google Patents
蓄電池用薄膜集電体 Download PDFInfo
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- JP7364295B1 JP7364295B1 JP2023010753A JP2023010753A JP7364295B1 JP 7364295 B1 JP7364295 B1 JP 7364295B1 JP 2023010753 A JP2023010753 A JP 2023010753A JP 2023010753 A JP2023010753 A JP 2023010753A JP 7364295 B1 JP7364295 B1 JP 7364295B1
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- Prior art keywords
- thin film
- current collector
- plating
- electroless plating
- coating composition
- Prior art date
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
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Abstract
Description
蓄電池用薄膜集電体の製造方法であって、
(1)薄膜基材の上面及び/又は下面に、無電解めっき用塗料組成物を塗布する事に依り、塗膜を形成する工程、及び
(2)工程(1)の後、前記塗膜に無電解めっきを施す事に依り、無電解めっき皮膜を形成する工程
を含み、
前記無電解めっき用塗料組成物は、
(1)パラジウム粒子と分散剤との複合体、
(2)溶媒、及び
(3)バインダー樹脂、
を含有する、製造方法。
前記薄膜基材は、厚みが1μm~10μmである、前記項1に記載の製造方法。
前記薄膜基材は、ポリフェニレンサルファイド、液晶ポリマー、ポリエーテルスルホン、ポリサルホン、ポリイミド、熱可塑性ポリイミド、ポリエーテルエーテルケトン、ポリアミドイミド、ポリエチレンテレフタレート、及び不織布から成る群から選ばれる少なくとも一種の薄膜基材である、前記項1に記載の製造方法。
更に、(3)工程(2)の後、前記無電解めっき皮膜に、電気めっきを施す事に依り、電気めっき皮膜を形成する工程
を含む、前記項1に記載の製造方法。
更に、(4)工程(3)の後、前記電気めっき皮膜に、装飾電気めっきを施す事に依り、装飾電気めっき皮膜を形成する工程
を含む、前記項4に記載の製造方法。
更に、(5)前記蓄電池用薄膜集電体の基材の厚み方向に、
貫通する孔、及び/又は溝、及び/又は、
貫通しない孔、及び/又は溝を形成する工程、
を含む、前記項1、4、又は5に記載の製造方法。
更に、(6)前記蓄電池用薄膜集電体に、
切断の圧力を掛ける事に依り、前記蓄電池用薄膜集電体の上面と下面とで、切断面を介してめっきが繋がり、導電性を付与する工程、
を含む、前記項1、4、又は5に記載の製造方法。
更に、(7)前記蓄電池用薄膜集電体の端面に、
無電解めっき、及び/又は電気めっきを施す事に依り、前記薄膜蓄電池用薄膜集電体の上面と下面とで、前記端面を介してめっきが繋がり、導電性を付与する工程、
を含む、前記項1、4、又は5に記載の製造方法。
前記項1、4、又は5に記載の製造方法に依って製造される、蓄電池用薄膜集電体。
前記項6に記載の製造方法に依って製造される、蓄電池用薄膜集電体。
前記項7に記載の製造方法に依って製造される、蓄電池用薄膜集電体。
前記項8に記載の製造方法に依って製造される、蓄電池用薄膜集電体。
本発明の蓄電池用薄膜集電体の製造方法は、
(1)薄膜基材の上面及び/又は下面に、無電解めっき用塗料組成物を塗布する事に依り、塗膜を形成する工程、及び
(2)工程(1)の後、前記塗膜に無電解めっきを施す事に依り、無電解めっき皮膜を形成する工程を含む。
(a)パラジウム粒子と分散剤との複合体、
(b)溶媒、及び
(c)バインダー樹脂を含有する。
貫通する孔、及び/又は溝、及び/又は、
貫通しない孔、及び/又は溝を形成する工程を含む。
切断の圧力を掛ける事に依り、前記薄膜基材、及び/又は蓄電池用薄膜集電体の上面と下面とで、めっきが繋がり、導電性を付与する工程を含む。
無電解めっき、及び/又は電解めっきを施す事に依り、前記薄膜基材、及び/又は蓄電池用薄膜集電体の上面と下面とで、めっきが繋がり、導電性を付与する工程を含む。
(A)無電解めっき用塗料組成物
無電解めっき用塗料組成物は、
(a)パラジウム粒子と分散剤との複合体、
(b)溶媒、及び
(c)バインダー樹脂を含有する。
本発明の無電解めっき用塗料組成物は、パラジウム粒子(Pd粒子)と、分散剤との複合体を含有する(Pd複合体)。
溶媒は、これらの溶媒を1種単独で用いても良く、或は2種以上を混合(ブレンド)して用いても良い。
無電解めっき用塗料組成物は、溶媒を含有する。溶媒は、(a)Pd複合体、及び(c)バインダー樹脂との親和性に優れており、(a)Pd複合体、及び(c)バインダー樹脂を分散させる溶媒(又は分散媒)としての機能を有する。
無電解めっき用塗料組成物は、バインダー樹脂を含有する。バインダー樹脂を使用する事に依り、薄膜基材上に無電解めっき用塗膜を、より強固に基材に密着させる事が出来る。バインダー樹脂は、無電解めっき用塗膜を構成する高分子母材(マトリックス樹脂)と成る。
無電解めっき用塗料組成物は、好ましくは、
(i)溶媒中に、Pdイオン及び分散剤を存在させる工程、
(ii)Pdイオンと還元剤とを反応させる事に依り、このPdイオンを還元する工程、及び
(iii)溶媒に、バインダー樹脂を混合する工程、
を含む製造方法に依り製造する。
本発明の蓄電池用薄膜集電体の製造方法は、(1)薄膜基材の上面及び/又は下面に、無電解めっき用塗料組成物を塗布する事に依り、塗膜を形成する工程を含む。
無電解めっき用塗料組成物を薄膜基材に使用する事に依り、無電解めっき用の塗膜を形成した後、無電解めっきを行う事に依って、無電解めっき皮膜を形成する。この無電解めっき皮膜が形成された被めっき物は、めっき皮膜の密着性に優れる。
本発明の蓄電池用薄膜集電体の製造方法は、更に、(3)工程(2)の後、前記無電解めっき皮膜に、電気めっきを施す事に依り、電気めっき皮膜を形成する工程を含む。
本発明の蓄電池用薄膜集電体の製造方法は、更に、(4)工程(3)の後、前記電気めっき皮膜に、装飾電気めっきを施す事に依り、装飾電気めっき皮膜を形成する工程を含む。
貫通する孔、及び/又は溝、及び/又は、
貫通しない孔、及び/又は溝を形成する工程
本発明の蓄電池用薄膜集電体の製造方法は、好ましくは、更に、(3)蓄電池用薄膜集電体の基材の厚み方向に、貫通する孔、及び/又は溝、及び/又は、貫通しない孔、及び/又は溝を形成する工程を含む。
切断の圧力を掛ける事に依り、蓄電池用薄膜集電体の上面と下面とで、切断面を介してめっきが繋がり、導電性を付与する工程
本発明の蓄電池用薄膜集電体の製造方法は、好ましくは、更に、(4)蓄電池用薄膜集電体に、切断の圧力を掛ける事に依り、蓄電池用薄膜集電体の上面と下面とで、切断面を介してめっきが繋がり、導電性を付与する工程を含む。
無電解めっき、及び/又は電気めっきを施す事に依り、蓄電池用薄膜集電体の上面と下面とで、端面を介してめっきが繋がり、導電性を付与する工程
本発明の蓄電池用薄膜集電体の製造方法は、好ましくは、更に、(5)蓄電池用薄膜集電体の端面に、無電解めっき、及び/又は電気めっきを施す事に依り、蓄電池用薄膜集電体の上面と下面とで、端面を介してめっきが繋がり、導電性を付与する工程を含む。
本発明は、本発明の蓄電池用薄膜集電体の製造方法に依って製造される、蓄電池用薄膜集電体を包含する。
本発明の蓄電池用薄膜集電体を、特に、渦巻状に巻回して形成された巻回構造とする事に依り、表面積が増え、より容量が大きな蓄電池用薄膜集電体を作成する事が出来る。
(1)Pd複合体含有液、及び無電解めっき用塗料組成物の作製
特許第5422812号の記載に従って、Pd複合体含有液、及び無電解めっき用塗料組成物を作製した。
Pd複合体含有率:1.2wt%
Pd粒子の平均粒子径:2nm~10nm
Pd粒子:分散剤(Pd複合体中のPd粒子と分散剤との質量比)=75:25
無電解めっき用塗料組成物
Pd複合体含有液8.3wt%
ポリエステル樹脂水溶液4wt%
イオン交換水87.7wt%
(2)蓄電池用薄膜集電体1の作製(図1~3)
ポリエチレンテレフタレート(PET)フィルム(基材厚:5μm)上に、基材の厚み方向に貫通する穴を開けた。穴を開ける方法は、直径0.5mmの針を使い、10mm間隔で、穴を開けた。次に、バーコーター#4を用いて、無電解めっき用塗料組成物を塗布し、乾燥用オーブン内で105℃、5分間乾燥させた。
ポリエチレンテレフタレート(PET)フィルム(基材厚:5μm)上に、バーコーター#4を用いて、無電解めっき用塗料組成物を塗布し、乾燥用オーブン内で105℃、5分間乾燥させた。
ポリエチレンテレフタレート(PET)フィルム(基材厚:5μm)上に、フィルムの幅より10mm長いバーコーター#4を用いて、無電解めっき用塗料組成物を端面にも塗布し、乾燥用オーブン内で105℃、5分間乾燥させた。
(1)めっき性の評価
塗膜含有物品(フィルム)を無電解めっき浴に浸漬させる事に依り、無電解めっきを行い、無電解めっき性(無電解銅めっき性及び無電解ニッケルめっき性)を評価した。
塗膜含有物品(フィルム)に対して、前記めっき性試験と同様にして、銅又はニッケルめっき皮膜を得た(蓄電池用薄膜集電体1~4)。
電子顕微鏡:日本電子(株)社製JSM-6010PLUS/LA
テスター:三和電気計器(株)社製YX-361TR
蓄電池用薄膜集電体1(図4)
電子顕微鏡を用いて、蓄電池用薄膜集電体1の基材の厚み方向に、貫通する孔を形成し、貫通する孔は、蓄電池用薄膜集電体の上面と下面とで、貫通する孔の内壁を介して、めっきが繋がっている事を確認した(図4)。
電子顕微鏡を用いて、蓄電池用薄膜集電体3に、切断の圧力を掛ける事に依り、蓄電池用薄膜集電体の上面と下面とで、切断面を介して、めっきが繋がっている事を確認した(図5)。
電子顕微鏡を用いて、蓄電池用薄膜集電体4の端面に、無電解めっき、次いで電解めっきを施す事に依り、蓄電池用薄膜集電体の上面と下面とで、端面を介して、めっきが繋がっている事を確認した(図6)。
本発明は、無電解めっき用塗料組成物を用いて、蓄電池用薄膜集電体を作成する事に依り、軽量で、容量が大きな蓄電池用薄膜集電体を作成する事が出来る。
Claims (4)
- 蓄電池用薄膜集電体の製造方法であって、
(1)薄膜基材の上面及び下面に、無電解めっき用塗料組成物を塗布する事に依り、塗膜を形成する工程、及び
(2)工程(1)の後、前記塗膜に無電解めっきを施す事に依り、無電解めっき皮膜を形成する工程を含み、
前記無電解めっき用塗料組成物は、
(1)パラジウム粒子と分散剤との複合体、
(2)溶媒、及び
(3)バインダー樹脂を含有し、
更に、
(4)前記蓄電池用薄膜集電体に、
切断の圧力を掛ける事に依り、前記蓄電池用薄膜集電体の上面と下面とで、切断面を介してめっきが繋がり、導電性を付与する工程を含む、製造方法。 - 前記薄膜基材は、厚みが1μm~10μmである、請求項1に記載の製造方法。
- 前記薄膜基材は、ポリフェニレンサルファイド、液晶ポリマー、ポリエーテルスルホン、ポリサルホン、ポリイミド、熱可塑性ポリイミド、ポリエーテルエーテルケトン、ポリアミドイミド、ポリエチレンテレフタレート、及び不織布から成る群から選ばれる少なくとも一種の薄膜基材である、請求項1に記載の製造方法。
- 更に、(3)工程(2)の後、工程(4)の前に、前記無電解めっき皮膜に、電気めっきを施す事に依り、電気めっき皮膜を形成する工程
を含む、請求項1に記載の製造方法。
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JP2004103475A (ja) * | 2002-09-11 | 2004-04-02 | Sony Corp | 電池 |
JP2013209643A (ja) * | 2012-03-02 | 2013-10-10 | Iox:Kk | 無電解めっき用塗料組成物 |
JP2014060015A (ja) * | 2012-09-17 | 2014-04-03 | Toyota Industries Corp | 二次電池用集電体、その製造方法、及び二次電池 |
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WO2024158025A1 (ja) * | 2023-01-27 | 2024-08-02 | 帝国イオン株式会社 | 蓄電池用薄膜集電体 |
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