JP2023522367A - 金属負極、その調製方法、及び二次電池 - Google Patents
金属負極、その調製方法、及び二次電池 Download PDFInfo
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- JP2023522367A JP2023522367A JP2022563886A JP2022563886A JP2023522367A JP 2023522367 A JP2023522367 A JP 2023522367A JP 2022563886 A JP2022563886 A JP 2022563886A JP 2022563886 A JP2022563886 A JP 2022563886A JP 2023522367 A JP2023522367 A JP 2023522367A
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- polymer
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/366—Composites as layered products
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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Abstract
Description
BATTERY”という表題の中国特許出願第202010317947.0号に対する優先権を主張するものであり、この文献は、その全体が参照により本明細書に組み込まれる。
リチウム金属電池の調製(preparation)には以下が含まれる。
リチウム金属電池の調製には以下が含まれる。
リチウム金属電池の調製には以下が含まれる。
リチウム金属電池の調製には以下が含まれる。
ナトリウム金属電池の調製には以下が含まれる。
Claims (21)
- 金属負極であって、当該金属負極は、金属負極体と、該金属負極体の片面又は両面のそれぞれの表面に形成される保護層とを含み、該保護層は、アルカリ金属溶解能を有する液状又はゲル状の内層と、高いイオン伝導性を有する固体状の外層とを含む2層構造を含み、アルカリ金属溶解能を有する前記液状又はゲル状の内層は、電子受容能を有する芳香族炭化水素系低分子化合物及び芳香族炭化水素基を含むポリマーのうちの少なくとも1つと、リチウムイオン錯化能を有する、エーテル系低分子溶媒、アミン系低分子溶媒、チオエーテル系低分子溶媒、ポリエーテルポリマー、ポリアミンポリマー、及びポリチオエーテルポリマーのうちの少なくとも1つと、を含む、
金属負極。 - 前記芳香族炭化水素系低分子化合物は、ビフェニル、ナフタレン、フェナントレン、アントラセン、テトラセン、及びピレンのうちの少なくとも1つを含み、芳香族炭化水素基を含む前記ポリマーは、ビフェニル、ナフタレン、フェナントレン、アントラセン、テトラセン、及びピレン芳香族基のうちの少なくとも1つを含む、請求項1に記載の金属負極。
- 前記エーテル系低分子溶媒は、エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、ジエチレングリコールジメチルエーテル、及びテトラエチレングリコールジメチルエーテルのような鎖状エーテルの少なくとも1つと、テトラヒドロフラン、1,4-ジオキサン、12-クラウンエーテル4、15-クラウンエーテル5、及び18-クラウンエーテル6のような環状エーテルの少なくとも1つと、を含み、
前記アミン系低分子溶媒は、エチレンジアミン・ジメチルアミン、エチレンジアミン・テトラメチルアンモニウム、及びジエチレンジアミンテトラメチルアンモニウムのうちの少なくとも1つを含み、前記チオエーテル系低分子溶媒は、エチレン・ジチオール・ジメチル・チオエーテル、エチレン・ジチオール・ジエチル・チオエーテル、ジエチレン・ジチオール・ジメチル・チオエーテル、及びテトラエチレン・ジチオール・ジメチル・チオエーテルのうちの少なくとも1つを含む、請求項1又は2に記載の金属負極。 - 前記ポリエーテルポリマーは、ポリエチレンオキサイド及びポリプロピレンオキサイドのうちの少なくとも1つを含み、前記ポリアミンポリマーは、ポリメチル・エチレンジアミン及びポリメチル・メタクリレート・エチレンジアミンのうちの少なくとも1つを含み、前記ポリチオエーテルポリマーは、ポリエチレンジチオール及びメチルポリエチレンジチオールのうちの少なくとも1つを含む、請求項1乃至3のいずれか一項に記載の金属負極。
- アルカリ金属溶解能を有する前記液状又はゲル状の内層は、ポリフッ素化オレフィンポリマー、ポリニトリルポリマー、ポリアミドポリマー、ポリイミドポリマー、ポリアミド-イミドポリマーのうちの少なくとも1つを含む、請求項1乃至4のいずれか一項に記載の金属負極。
- 前記ポリフッ素化オレフィンポリマーは、PVDF、PVDF-HFP、及びPTFEのうちの少なくとも1つを含み、前記ポリニトリルポリマーはPANであり、ポリアミンエステルポリマーは、ポリ2,4-トルエン・ジイソシアネート・ポリアミンエステルポリマーを含み、前記ポリアミドポリマーは、PA11及びPA66のうちの少なくとも1つを含み、ポリイミドはポリビスマレイミドである、請求項5に記載の金属負極。
- 高いイオン伝導性を有する前記固体状の外層は、酸化物固体電解質又は硫化物固体電解質を含む、請求項1乃至6のいずれか一項に記載の金属負極。
- 前記酸化物固体電解質は、ペロブスカイト固体電解質、ナトリウム高速イオン伝導体固体電解質、リチウム高速イオン伝導体固体電解質、ガーネット固体電解質、又はガラス酸化物固体電解質のいずれか1つを含み、前記硫化物固体電解質は、チオリチウム高速イオン伝導体又はガラス硫化物固体電解質のいずれか1つを含む、請求項7に記載の金属負極。
- 高いイオン伝導性を有する前記固体状の外層は、ポリフッ素化オレフィンポリマー、ポリニトリルポリマー、ポリウレタンポリマー、ポリアミドポリマー、ポリイミドポリマー、及びポリアミド-イミドポリマーのうちの少なくとも1つをさらに含む、請求項1乃至8のいずれか一項に記載の金属負極。
- 高いイオン伝導性を有する前記固体状の外層の厚さが、0.1~50ミクーロンである、請求項1乃至9のいずれか一項に記載の金属負極。
- 前記金属負極体は、リチウム負極、ナトリウム負極、カリウム負極、リチウム合金負極、ナトリウム合金負極、又はカリウム合金負極を含む、請求項1乃至10のいずれか一項に記載の金属負極。
- 前記リチウム合金負極は、リチウム金属と他の元素とから構成される合金を含み、前記他の元素は、ケイ素、ナトリウム、カリウム、セシウム、アルミニウム、スズ、及びインジウムのうちの少なくとも1つを含む、請求項11に記載の金属負極。
- 金属負極の調製方法であって、当該調製方法は、
金属負極体の片面又は両面のそれぞれの表面に、アルカリ金属溶解能を有する液状又はゲル状の内層と、高いイオン伝導性を有する固体状の外層とを含む2層構造を有する保護層を形成するステップを含み、アルカリ金属溶解能を有する前記液状又はゲル状の内層は、電子受容能を有する芳香族炭化水素系低分子化合物及び芳香族炭化水素基を含むポリマーのうちの少なくとも1つと、リチウムイオン錯化能を有する、エーテル系低分子溶媒、アミン系低分子溶媒、チオエーテル系低分子溶媒、ポリエーテルポリマー、ポリアミンポリマー、及びポリチオエーテルポリマーのうちの少なくとも1つと、を含む、
金属負極の調製方法。 - 金属負極体の片面又は両面のそれぞれの表面に、アルカリ金属溶解能を有する液状又はゲル状の内層と、高いイオン伝導性を有する固体状の外層とを含む2層構造を有する保護層を形成するステップは、
アルカリ金属溶解能を有する前記液状又はゲル状の内層を前記金属負極体の表面にコーティングした後で、前記固体状の外層を前記液状又はゲル状の内層に形成するステップを含む、請求項13に記載の金属負極の調製方法。 - 金属負極体の片面又は両面のそれぞれの表面に、アルカリ金属溶解能を有する液状又はゲル状の内層と、高いイオン伝導性を有する固体状の外層とを含む2層構造を有する保護層を形成するステップは、
前記金属負極体を前記固体状の外層と複合化した後に、電子受容能を有する芳香族炭化水素系低分子化合物及び芳香族炭化水素基を含むポリマーの少なくとも1つと、リチウムイオン錯化能を有する、エーテル系低分子溶媒、アミン系低分子溶媒、チオエーテル系低分子溶媒、ポリエーテルポリマー、ポリアミンポリマー、及びポリチオエーテルポリマーのうちの少なくとも1つとを、前記金属負極体と前記固体状の外層との間の中間層に注入して、アルカリ金属溶解能を有する前記液状又はゲル状の内層を形成するステップを含む、請求項13に記載の金属負極の調製方法。 - 前記芳香族炭化水素系低分子化合物は、ビフェニル、ナフタレン、フェナントレン、アントラセン、テトラセン、及びピレンのうちの少なくとも1つを含み、芳香族炭化水素基を含む前記ポリマーは、ビフェニル、ナフタレン、フェナントレン、アントラセン、テトラセン、及びピレン芳香族基のうちの少なくとも1つを含む、請求項13乃至15のいずれか一項に記載の金属負極。
- 前記エーテル系低分子溶媒は、エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、ジエチレングリコールジメチルエーテル、及びテトラエチレングリコールジメチルエーテルのような鎖状エーテルの少なくとも1つと、テトラヒドロフラン、1,4-ジオキサン、12-クラウンエーテル4、15-クラウンエーテル5、18-クラウンエーテル6のような環状エーテルの少なくとも1つと、を含み、
前記アミン系低分子溶媒は、エチレンジアミン・ジメチルアミン、エチレンジアミン・テトラメチルアンモニウム、及びジエチレンジアミンテトラメチルアンモニウムのうちの少なくとも1つを含み、前記チオエーテル系低分子溶媒は、エチレン・ジチオール・ジメチル・チオエーテル、エチレン・ジチオール・ジエチル・チオエーテル、ジエチレン・ジチオール・ジメチル・チオエーテル、及びテトラエチレン・ジチオール・ジメチル・チオエーテルのうちの少なくとも1つを含み、
前記ポリエーテルポリマーは、ポリエチレンオキサイド及びポリプロピレンオキサイドのうちの少なくとも1つを含み、前記ポリアミンポリマーは、ポリメチル・エチレンジアミン及びポリメチル・メタクリレート・エチレンジアミンのうちの少なくとも1つを含み、前記ポリチオエーテルポリマーは、ポリエチレンジチオール及びメチルポリエチレンジチオールのうちの少なくとも1つを含む、請求項13乃至16のいずれか一項に記載の金属負極。 - アルカリ金属溶解能を有する前記液状又はゲル状の内層は、ポリフッ素化オレフィンポリマー、ポリニトリルポリマー、ポリアミドポリマー、ポリイミドポリマー、ポリアミド-イミドポリマーのうちの少なくとも1つを含む、請求項13乃至17のいずれか一項に記載の金属負極。
- コーティング方法が、ドロップコーティング、ブラシコーティング、ロールコーティング、スプレー、スクレープコーティング、ディップコーティング、及びスピンコーティングのうちの少なくとも1つを含み、コーティングが、乾燥した部屋又は保護雰囲気で行われる、請求項13乃至18のいずれか一項に記載の金属負極の調製方法。
- 正極、負極、隔膜及び電解質を含む二次電池であって、前記負極は請求項1乃至12のいずれか一項に記載の金属負極を含む、二次電池。
- ハウジングと、該ハウジング内に収容される回路基板と、前記ハウジングに取り付けられ且つ前記回路基板に接続される表示機器とを含む端末であって、当該端末は、請求項20に記載の二次電池を含み、該二次電池は、前記回路基板及び前記表示機器に電力を供給するように構成される、端末。
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