JP6917418B2 - エネルギー貯蔵装置の乾式電極とその製造方法 - Google Patents
エネルギー貯蔵装置の乾式電極とその製造方法 Download PDFInfo
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- JP6917418B2 JP6917418B2 JP2019142624A JP2019142624A JP6917418B2 JP 6917418 B2 JP6917418 B2 JP 6917418B2 JP 2019142624 A JP2019142624 A JP 2019142624A JP 2019142624 A JP2019142624 A JP 2019142624A JP 6917418 B2 JP6917418 B2 JP 6917418B2
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Description
本願は、その全ての開示内容が参照によって本願に組み込まれる、2014年4月18日に提出された米国暫定出願番号61/981,602の「エネルギー貯蔵装置の乾式電極とその製造方法」の利点を主張する。
本願とともに提出された出願データシートにおいて外国又は国内の優先権主張が特定される全ての出願は米国特許法施行規則37CFR 1.57の下で参照によりここに含まれる。
Claims (22)
- カソード電極フィルムであって、
活性炭素及び/又は導電性炭素と、
リチウム金属酸化物、硫化リチウム、又はこれらの混合物から選択される活性材料と、
ポリテトラフルオロエチレン(PTFE)と、ポリフッ化ビニリデン(PVDF)、PVDF共重合体及びポリエチレンオキサイド(PEO)の少なくとも1つとを含む混合バインダ材とを備え、
前記混合バインダ材は、PTFEとPVDFとの質量比、PTFEとPVDF共重合体との質量比、又はPTFEとPEOとの質量比が1:1〜5:1であり、
独立した電極フィルムである、カソード電極フィルム。 - 前記活性材料は、リチウム金属酸化物である、請求項1に記載のカソード電極フィルム。
- 前記混合バインダ材は、PTFEを90重量%以上含む、請求項1又は2に記載のカソード電極フィルム。
- 前記混合バインダ材の含有量は、2重量%以上、10重量%以下である、請求項1〜3のいずれか1項に記載のカソード電極フィルム。
- 前記混合バインダ材は、PTFEと、PVDF、PVDF共重合体及びPEOのいずれか1つとを含む、請求項1〜4のいずれか1項に記載のカソード電極フィルム。
- 前記混合バインダ材は、PTFEとPVDFとの質量比、PTFEとPVDF共重合体との質量比、又はPTFEとPEOとの質量比が3:2〜5:1である、請求項1〜5のいずれか1項に記載のカソード電極フィルム。
- 前記混合バインダ材は、PTFEとPVDFとの質量比、PTFEとPVDF共重合体との質量比、又はPTFEとPEOとの質量比が1:1〜3:1である、請求項1〜5のいずれか1項に記載のカソード電極フィルム。
- 前記カソード電極フィルムは、前記活性炭素を含んでいる、請求項1〜7のいずれか1項に記載のカソード電極フィルム。
- 前記カソード電極フィルムは、溶媒残渣を含んでいない、請求項1〜8のいずれか1項に記載のカソード電極フィルム。
- 請求項1〜9のいずれか1項に記載のカソード電極フィルムを備えているエネルギー貯蔵装置。
- ポリテトラフルオロエチレン(PTFE)と、ポリフッ化ビニリデン(PVDF)、PVDF共重合体及びポリエチレンオキサイド(PEO)の少なくとも1つとを含むアノード混合バインダ材を有するアノードをさらに備えている、請求項10に記載のエネルギー貯蔵装置。
- 前記混合バインダ材は、前記アノード混合バインダ材と異なっている、請求項11に記載のエネルギー貯蔵装置。
- エネルギー貯蔵装置用の独立したカソード電極フィルムの形成方法は、
活性炭素材料の第1の分量と、混合バインダ材の少なくとも1つの成分とを混合して第1混合物を形成する処理と、
前記活性炭素材料の第1の分量と、前記少なくとも1つの成分とを含む前記第1混合物を高せん断にさらす処理と、
リチウム金属酸化物、硫化リチウム、又はこれらの混合物から選択される活性材料の第1の分量を加えて第2混合物を形成する処理と、
前記第2混合物にポリテトラフロオロエチレン(PTFE)を加えて第3混合物を形成する処理と、
前記第3混合物をカレンダ処理して独立したカソード電極フィルムを形成する処理とを備え、
前記少なくとも1つの成分は、ポリビニリデンフルオライド(PVDF)、PVDF共重合体、及びポリエチレンオキシド(PEO)のうちの少なくとも1つを含み、
PTFEと前記少なくとも1つの成分との質量比が1:1〜5:1であり、
溶剤を用いない乾式工程である、エネルギー貯蔵装置用の独立したカソード電極フィルムの形成方法。 - 第1混合物を形成する処理において、前記活性炭素材料と前記少なくとも1つの成分とを質量比で1:5〜5:1の割合で混合する、請求項13に記載のカソード電極フィルムの形成方法。
- 第1混合物を形成する処理において、前記活性炭素材料と前記少なくとも1つの成分とを質量比で1:1〜5:1の割合で混合する、請求項14に記載のカソード電極フィルムの形成方法。
- 前記少なくとも1つの成分に対するPTFEの質量比が3:2〜5:1である、請求項13に記載のカソード電極フィルムの形成方法。
- 前記少なくとも1つの成分に対するPTFEの質量比が1:1〜3:1である、請求項13に記載のカソード電極フィルムの形成方法。
- 前記高せん断にさらす処理よりも後に、前記活性炭素材料の第2の分量と導電性炭素材料とを前記第2混合物に混合する処理をさらに備えている、請求項13〜17のいずれか1項に記載のカソード電極フィルムの製造方法。
- 前記高せん断にさらす処理は、PTFEをフィブリル化する処理を含む、請求項13〜18のいずれか1項に記載のカソード電極フィルムの製造方法。
- 前記高せん断にさらす処理は、ジェットミルによる処理を含む、請求項13〜18のいずれか1項に記載のカソード電極フィルムの製造方法。
- 前記活性材料は、リチウム金属酸化物を含む、請求項13〜20のいずれか1項に記載のカソード電極フィルムの製造方法。
- 前記活性材料は、リチウムニッケルマンガンコバルト酸化物、リチウムマンガン酸化物、リチウムリン酸鉄、リチウムコバルト酸化物、又はリチウムニッケルコバルトアルミニウム酸化物を含む、請求項21に記載のカソード電極フィルムの製造方法。
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EP3132481B1 (en) | 2021-10-20 |
KR20210156340A (ko) | 2021-12-24 |
CN106463267A (zh) | 2017-02-22 |
US20200358100A1 (en) | 2020-11-12 |
KR20160145043A (ko) | 2016-12-19 |
US10741843B2 (en) | 2020-08-11 |
US20240105955A1 (en) | 2024-03-28 |
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