KR101887766B1 - 활물질 복합 입자, 이를 포함하는 전극 복합체와 이들의 제조방법 및 전고체 전지 - Google Patents
활물질 복합 입자, 이를 포함하는 전극 복합체와 이들의 제조방법 및 전고체 전지 Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 72
- 239000011246 composite particle Substances 0.000 title claims abstract description 59
- 239000011149 active material Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 41
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- 229910052744 lithium Inorganic materials 0.000 description 7
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Abstract
본 발명의 일 실시형태에 따른 활물질 복합 입자는 전고체 전지에 사용되는 전극용 활물질로서, 전극 활물질 베어와; 상기 전극 활물질 베어의 표면에 고체바인더를 매개로 부착되는 미립형 고체전해질을 포함한다.
Description
도 2는 본 발명의 일 실시예에 따른 활물질 복합 입자를 포함하는 전극 복합체를 보여주는 구성도이며,
도 3은 본 발명의 일 실시예에 따른 활물질 복합 입자를 포함하는 전극 복합체의 제조방법을 보여주는 순서도이고,
도 4는 본 발명의 일 실시예에 따른 활물질 복합 입자를 포함하는 전고체 전지를 보여주는 구성도이다.
구분 |
전극 활물질 베어 |
미립형 고체전해질 |
조립형 고체전해질 |
고체바인더 |
도전재 |
초기 방전용량 (mAh/g) |
실시예1 | 80 | 10 | 10 | 1 | 2 | 117.84 |
실시예2 | 80 | 5 | 15 | 1 | 2 | 127.49 |
비교예1 | 80 | - | 20 | - | 2 | 90.93 |
비교예2 | 70 | - | 30 | - | 2 | 112.32 |
비교예3 | 80 | 20 | - | - | 2 | 103.64 |
비교예4 | 80 | - | 20 | - | 2 | 92.36 |
비교예5 | 90 | - | 10 | - | 2 | 64.37 |
비교예6 | 80 | 20 | - | 1 | 78.63 |
10, 20: 활물질 복합 입자 11, 21: 전극 활물질 베어
12a: 미립형 고체전해질 12b: 조립형 고체전해질
13: 고체바인더 100: 양극 복합체부
200: 음극 복합체부 300: 고체전해질부
Claims (20)
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- 전고체 전지에 사용되는 전극 복합체를 제조하는 방법으로서,
전극 활물질 베어의 표면에 고체바인더를 매개로 미립형 고체전해질이 부착된 활물질 복합 입자를 준비하는 제 1 단계와;
상기 활물질 복합 입자에 조립형 고체전해질, 도전재 및 바인더를 혼합하고, 가압 성형하여 전극 복합체를 획득하는 제 2 단계를 포함하는 전극 복합체의 제조방법.
- 청구항 14에 있어서,
상기 제 2 단계는
상기 미립형 고체전해질의 입자 사이즈보다 입자 사이즈가 큰 조립형 고체전해질과 도전재 및 바인더를 준비하는 제 2 준비과정과;
상기 활물질 복합 입자, 조립형 고체전해질, 도전재 및 바인더를 혼합하는 제 2 혼합과정과;
상기 활물질 복합 입자, 조립형 고체전해질, 도전재 및 바인더의 혼합물을 전극 복합체로 가압 성형하는 성형과정을 포함하는 전극 복합체의 제조방법.
- 청구항 15에 있어서,
상기 제 2 혼합과정에서는 상기 전극 활물질 베어의 양과 미립형 고체전해질과 조립형 고체전해질 양의 합이 중량비로 80 : 20의 비율이 되도록 조립형 고체전해질의 양을 조절하고, 상기 전극 활물질 베어의 양과 도전재의 양이 중량비로 80: 2의 비율이 되도록 도전재의 양을 조절하는 것을 특징으로 하는 전극 복합체의 제조방법.
- 양극 활물질 베어의 표면에 고체바인더를 매개로 미립형 고체전해질이 부착된 양극 활물질 복합 입자를 포함하는 양극 복합체부와;
음극 활물질 베어의 표면에 고체바인더를 매개로 미립형 고체전해질이 부착된 음극 활물질 복합 입자를 포함하는 음극 복합체부와;
상기 양극 복합체부와 음극 복합체부 사이에 고체전해질이 충진되어 형성된 고체전해질부를 포함하는 전고체 전지.
- 청구항 17에 있어서,
상기 양극 복합체부 및 음극 복합체부는 상기 미립형 고체전해질의 입자 사이즈보다 입자 사이즈가 큰 조립형 고체전해질 및 도전재가 더 혼합된 것을 특징으로 하는 전고체 전지.
- 청구항 18에 있어서,
상기 양극 복합체부 및 음극 복합체부를 형성하는 상기 양극 활물질 베어 및 음극 활물질 베어의 입자 사이즈는 3 ~ 30㎛이고, 상기 미립형 고체전해질의 입자 사이즈는 1㎛ 이하이며, 상기 고체바인더의 입자 사이즈는 10㎚ ~ 1㎛이고, 상기 조립형 고체전해질의 입자 사이즈는 1 ~ 100㎛(1㎛는 제외)인 것을 특징으로 하는 전고체 전지.
- 청구항 17에 있어서,
상기 양극 복합체부 및 음극 복합체부을 형성하는 상기 미립형 고체전해질과 조립형 고체전해질은 상기 고체전해질부를 형성하는 고체전해질은 동종의 재료로 형성되는 것을 특징으로 하는 전고체 전지.
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US15/377,971 US20180114979A1 (en) | 2016-10-20 | 2016-12-13 | Active Material Composite Particle, Electrode Composite Comprising the Same, Fabrication Method Thereof and All-Solid Battery |
CN201710131931.9A CN107968220B (zh) | 2016-10-20 | 2017-03-07 | 活性材料复合颗粒、包括其的电极复合物及其制造方法 |
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KR20200060370A (ko) * | 2017-09-29 | 2020-05-29 | 니폰 제온 가부시키가이샤 | 전고체 이차 전지 전극용 복합 입자 및 그 제조 방법, 전고체 이차 전지용 전극, 그리고, 전고체 이차 전지 |
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