JP2017513175A - 電極組成物又は磁気特性を有する組成物を作製する方法、該方法によって得られた混合物及び組成物、並びにそれらの電極 - Google Patents
電極組成物又は磁気特性を有する組成物を作製する方法、該方法によって得られた混合物及び組成物、並びにそれらの電極 Download PDFInfo
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Abstract
Description
a)溶融プロセスによって溶媒を用いずに、少なくとも1つの活物質と、1つの結合剤形成ポリマー相と、1つの犠牲ポリマー相とを加熱混合して、混合物を得る工程と、
b)上記犠牲ポリマー相を少なくとも一部取り除いて、80%を超える重量含有率にて活物質(複数の場合もある)を含む上記組成物を得る工程と、
を含み、本発明によるこの方法では、工程a)において上記犠牲ポリマー相を15%以上の重量分率にて上記混合物中で使用するようになっている。
当業者にとって既知の全ての磁性無機フィラー、例えばフェライトFe2O3及びNd−Fe−B又はSm−Fe−N型の又はコバルト系、例えば特にSmCoの磁性物質、
リチウム化ポリアニオン性化合物又は錯体、例えば炭素でコーティングされた式LiMPO4のリチウム化リン酸金属M(例えばC−LiFePO4)、式Li4Ti5O12のリチウム化酸化チタン、又はカソードについて当業者に既知の任意の他の活物質(例えばLiCoO2、LiMnO4若しくはLiNi1/3Mn1/3Co1/3O4)若しくはアノードについて当業者に既知の任意の他の活物質(例えばグラファイト)を含む、リチウムイオンバッテリー電極でのリチウム挿入/脱挿入を可能にする活性無機フィラー、及び、
スーパーキャパシタ電極用の多孔質炭素を含むフィラー、
からなる群から選ばれるフィラーを使用することができる。
磁性物質の組成物1を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物1について下記配合(重量分率及び体積分率として表される)に従って調製した。
リチウムイオンバッテリーのカソード組成物2を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物2について下記配合に従って調製した。
リチウムイオンバッテリーのカソード組成物3を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物3について下記配合(重量分率及び体積分率として表される)に従って調製した。
リチウムイオンバッテリーのカソード組成物4を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物4について下記配合(重量分率及び体積分率として表される)に従って調製した。
リチウムイオンバッテリーのカソード組成物5を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物5について下記配合(重量分率及び体積分率として表される)に従って調製した。
リチウムイオンバッテリーのカソード組成物6を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた組成物6について下記配合(重量分率及び体積分率として表される)に従って調製した。
リチウムイオンバッテリーの「対照」カソード組成物を、犠牲ポリマーの抽出前では混合物について、またこの抽出後では得られた「対照」組成物について下記配合(重量分率及び体積分率として表される)に従って調製した。
Claims (15)
- リチウムイオン若しくはナトリウムイオンバッテリー電極、若しくはスーパーキャパシタ電極を形成するのに、又は磁気特性を呈するのに使用可能なポリマー組成物を作製する方法であって、該方法が、
a)溶融プロセスによって溶媒を用いずに、少なくとも1つの活物質と、結合剤形成ポリマー相と、犠牲ポリマー相とを加熱混合して、混合物を得る工程と、
b)前記犠牲ポリマー相を少なくとも一部、取り除いて、80%を超える重量分率にて前記活物質(複数の場合もある)を含む前記組成物を得る工程と、
を含み、工程a)において前記犠牲ポリマー相は15%以上の重量分率にて前記混合物中で使用することを特徴とする、方法。 - 工程a)において前記犠牲ポリマー相は両端値を含む20%〜80%の重量分率にて前記混合物中で使用することを特徴とする、請求項1に記載の方法。
- 工程a)において前記犠牲ポリマー相を数平均径が1mmを超える顆粒形態で使用することと、工程a)を前記混合物中で前記結合剤形成ポリマー相と前記犠牲ポリマー相とのマクロ相分離を伴わずに密閉式ミキサ又は押出機にて行い、該結合剤形成相が連続した該犠牲ポリマー相に均質に分散するか、又は該犠牲ポリマー相と共連続相を形成することとを特徴とする、請求項1又は2に記載の方法。
- 工程b)において熱分解温度が前記結合剤形成相の熱分解温度よりも少なくとも20℃低い前記犠牲ポリマー相が熱分解によって取り除かれることを特徴とする、請求項1〜3のいずれか一項に記載の方法。
- 前記犠牲ポリマー相は、ポリアルケンカーボネート、好ましくはポリエチレンカーボネート及び/又はポリプロピレンカーボネートから選ばれる少なくとも1つの犠牲ポリマーをベースとするものであることを特徴とする、請求項4に記載の方法。
- 工程b)において前記犠牲ポリマー相は、溶媒による抽出によって取り除かれ、好ましくはポリエチレングリコール、ポリプロピレングリコール及びそれらの混合物からなる群から選ばれる少なくとも1つの液体抽出可能な犠牲ポリマーをベースとするものであることを特徴とする、請求項1〜3のいずれか一項に記載の方法。
- 前記結合剤形成相は、少なくとも1つの架橋又は非架橋エラストマーを含み、1%〜12%の重量分率にて前記混合物中で使用され、好ましくは水素化ブタジエン/アクリロニトリルコポリマー(HNBR)、エチレン/アクリレートコポリマー、ポリイソプレン及びそれらの混合物からなる群から選ばれるものであることを特徴とする、請求項1〜6のいずれか一項に記載の方法。
- 前記活物質(複数の場合もある)は、好ましくは85%以上の重量分率にて工程b)で得られた前記組成物に存在し、
磁性無機フィラー、例えばフェライト、
リチウム化ポリアニオン性化合物又は錯体、例えば炭素でコーティングされた式LiMPO4のリチウム化リン酸金属M、式Li4Ti5O12のリチウム化酸化チタン、式LiCoO2、LiMnO4若しくはLiNi1/3Mn1/3Co1/3O4の酸化物、又はグラファイトを含む、リチウムイオンバッテリー電極でのリチウム挿入/脱挿入を可能にする活性無機フィラー、及び、
スーパーキャパシタ電極用の多孔質炭素を含むフィラー、
からなる群から選ばれるものであることを特徴とする、請求項1〜7のいずれか一項に記載の方法。 - 工程b)で得られた前記組成物は、30%〜70%の気孔率を有し、リチウムイオン若しくはナトリウムイオンバッテリー電極、又はスーパーキャパシタ電極の形成に適していることを特徴とする、請求項1〜8のいずれか一項に記載の方法。
- 工程a)と工程b)との間に、工程a)で得られた前記混合物をカレンダー成形する工程を含むことと、工程b)で得られた前記組成物を50μm〜150μmの厚さのシートから形成することとを特徴とする、請求項1〜9のいずれか一項に記載の方法。
- リチウムイオン若しくはナトリウムイオンバッテリー電極、若しくはスーパーキャパシタ電極を形成するのに、又は磁気特性を呈するのに使用可能なポリマー組成物であって、該組成物は、請求項1〜10のいずれか一項に記載の方法により得られ、0.001%以上、例えば0.01%〜10%の重量分率にて前記犠牲ポリマー相を含むことを特徴とする、ポリマー組成物。
- 請求項11に記載の前記組成物の前駆体を形成するのに使用可能なポリマー混合物であって、該混合物は、請求項1〜10のいずれか一項に記載の前記方法の工程a)によって得られ、15%以上、好ましくは両端値を含む20%〜80%の重量分率にて前記犠牲ポリマー相を前記混合物に含むことを特徴とする、混合物。
- 前記結合剤形成相は、連続した前記犠牲ポリマー相に均質に分散するか、又は該犠牲ポリマー相と共連続相を形成することを特徴とする、請求項12に記載の混合物。
- 請求項11に記載のポリマー組成物を含むことを特徴とする、リチウムイオン若しくはナトリウムイオンバッテリー電極、又はスーパーキャパシタ電極。
- 前記組成物はまた、カーボンブラック、グラファイト、膨張グラファイト、カーボンファイバー、カーボンナノチューブ、グラフェン及びそれらの混合物からなる群から選ばれる導電性フィラーを含み、該導電性フィラーは1%〜10%の重量分率にて該組成物に存在することを特徴とする、請求項14に記載の電極。
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US10723846B2 (en) | 2020-07-28 |
BR112016016823A2 (ja) | 2017-08-08 |
CA2937663C (fr) | 2020-09-01 |
CA2937663A1 (fr) | 2015-08-27 |
MX2016009330A (es) | 2017-02-02 |
EP3108522A1 (fr) | 2016-12-28 |
JP6441371B2 (ja) | 2018-12-19 |
KR102069655B1 (ko) | 2020-01-23 |
TWI643388B (zh) | 2018-12-01 |
AR099393A1 (es) | 2016-07-20 |
TW201603361A (zh) | 2016-01-16 |
CN105940527A (zh) | 2016-09-14 |
WO2015124835A1 (fr) | 2015-08-27 |
BR112016016823B1 (pt) | 2021-11-16 |
US20160340476A1 (en) | 2016-11-24 |
CN105940527B (zh) | 2020-06-02 |
KR20160146648A (ko) | 2016-12-21 |
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