JP2022505769A - 2つ以上の金属箔の間に熱-圧力変換層を含む電極集電体、これを含む電極およびリチウム二次電池 - Google Patents
2つ以上の金属箔の間に熱-圧力変換層を含む電極集電体、これを含む電極およびリチウム二次電池 Download PDFInfo
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- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
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- 229910052723 transition metal Inorganic materials 0.000 description 1
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Abstract
Description
本出願は、2019年9月19日付の韓国特許出願第10-2019-0115356号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示されたすべての内容は本明細書の一部として含まれる。
リチウム二次電池用電極集電体であって、
前記電極集電体は、2つ以上の金属箔層と、前記2つ以上の金属箔層の間に位置する熱-圧力変換層とを含み、
前記熱-圧力変換層は、熱-圧力交換セラミック物質、導電性物質、および接着剤を含む電極集電体が提供される。
上記式中、
Aは酸素置換型ハロゲンであり、
1.00≦a≦1.05、0.1≦x≦0.6、0.1≦y≦0.6、0≦b≦0.1である。
リチウム二次電池用電極集電体であって、
前記電極集電体は、2つ以上の金属箔と、前記2つ以上の金属箔の間に位置する熱-圧力変換層とを含み、
前記熱-圧力変換層は、熱-圧力交換セラミック物質、導電性物質、および接着剤を含む電極集電体が提供される。
上記式中、
Aは酸素置換型ハロゲンであり、
1.00≦a≦1.05、0.1≦x≦0.6、0.1≦y≦0.6、0≦b≦0.1である。
Claims (15)
- リチウム二次電池用電極集電体であって、
前記電極集電体は、2つ以上の金属箔層と、前記2つ以上の金属箔層の間に位置する熱-圧力変換層とを含み、
前記熱-圧力変換層は、熱-圧力交換セラミック物質、導電性物質、および接着剤を含む電極集電体。 - 前記熱-圧力変換層は、平らな2つ以上の金属箔層の間に介在する、請求項1に記載の電極集電体。
- 前記電極集電体は、下部集電体と、前記下部集電体上に位置する第1熱-圧力変換層と、前記第1熱-圧力変換層上に位置する中間集電体と、前記中間集電体上に位置する第2熱-圧力変換層と、前記第2熱-圧力変換層上に位置する上部集電体とを含む、請求項2に記載の電極集電体。
- 前記2つ以上の金属箔層の少なくとも1つの金属箔層は、その表面に凸部と凹部とを含む凹凸部を有し、前記凹部に前記熱-圧力変換層が形成されている、請求項1に記載の電極集電体。
- 前記凸部と凹部は、一定の間隔で形成されている、請求項4に記載の電極集電体。
- 前記熱-圧力交換セラミック物質は、五酸化三チタンである、請求項1から5のいずれか一項に記載の電極集電体。
- 前記熱-圧力交換セラミック物質は、熱と圧力によってラムダ五酸化三チタンとベータ五酸化三チタンとが可逆的に相転移する、請求項1から6のいずれか一項に記載の電極集電体。
- 前記熱-圧力変換層は、5~50μmの厚さである、請求項1に記載の電極集電体。
- 前記2つ以上の金属箔層は、Al金属からなり、前記電極集電体は、正極集電体である、請求項1に記載の電極集電体。
- 前記2つ以上の金属箔層は、Cu金属からなり、前記電極集電体は、負極集電体である、請求項1に記載の電極集電体。
- 前記2つ以上の金属箔は、それぞれ10~100μmの厚さである、請求項1に記載の電極集電体。
- 請求項1から11のいずれか一項に記載の電極集電体の少なくとも一面に電極活物質、バインダー、および導電材を含む電極合剤が形成されている電極。
- 前記電極活物質は、下記の化学式1で表現されるリチウム遷移金属酸化物を含む、請求項12に記載の電極:
LiaNi1-x-yMnxCoyO2-bAb (1)
上記式中、
Aは酸素置換型ハロゲンであり、
1.00≦a≦1.05、0.1≦x≦0.6、0.1≦y≦0.6、0≦b≦0.1である。 - 前記電極活物質は、Si/C複合体、SiOx(0<x<2)、金属がドーピングされたSiOx(0<x<2)、SiOx/C(0<x<2)、純粋Si(pure Si)、およびSi合金(Si-alloy)からなる群より選択される1種以上のシリコン系素材を含む、請求項12に記載の電極。
- 請求項12から14のいずれか一項に記載の電極を含む電極組立体がリチウム含有非水電解液と共に金属からなる角形または円筒形の電池ケースに内蔵されているリチウム二次電池。
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PCT/KR2020/009792 WO2021054596A1 (ko) | 2019-09-19 | 2020-07-24 | 2개 이상의 금속 호일 사이에 열-압력 변환층을 포함하는 전극 집전체, 이를 포함하는 전극 및 리튬 이차전지 |
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- 2020-07-24 EP EP20829527.9A patent/EP3823077A4/en active Pending
- 2020-07-24 US US17/271,919 patent/US20210391582A1/en active Pending
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US20210391582A1 (en) | 2021-12-16 |
JP7138787B2 (ja) | 2022-09-16 |
KR20210033722A (ko) | 2021-03-29 |
CN112825620A (zh) | 2021-05-21 |
EP3823077A4 (en) | 2021-12-15 |
WO2021054596A1 (ko) | 2021-03-25 |
EP3823077A1 (en) | 2021-05-19 |
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