KR20190046719A - 2차전지의 제조 방법 - Google Patents
2차전지의 제조 방법 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000004065 semiconductor Substances 0.000 claims abstract description 151
- 238000000034 method Methods 0.000 claims abstract description 121
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 92
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 92
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
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- 125000001931 aliphatic group Chemical group 0.000 description 1
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Abstract
Description
[도 2] 플러스와 0V의 사이클 전압 인가 전후의 산화물 반도체 2차전지의 구조를 나타낸다.
[도 3] 본 발명에 의한 산화물 반도체 2차전지의 제조 공정을 설명하는 플로차트다.
[도 4] 사이클 전압 인가 시스템의 실시 회로의 일례를 나타낸다.
[도 5] 플러스와 0V의 전압 파형의 일례를 나타낸다.
[도 6] 2사이클의 전압 파형의 일례를 나타낸다.
[도 7] 도 6에서 나타낸 전압 파형에 대하여, 전압계에서 측정된 제2 전극에서의 전압 파형예를 나타낸다.
[도 8] 전압 파형을 인가하는 프로세스를 설명하는 플로차트다.
[도 9] 도 5에 나타낸 양의 전압을 반복하는 단위 사이클의 실시예이다.
[도 10] 도 9에 나타낸 양의 전압을 반복하여 인가한 경우의 시간과 방전 용량의 관계를 나타내는 도면이다.
[도 11] 양과 음의 전압 파형의 일례를 나타내는 도면이다.
[도 12] 양과 음의 전압 파형의 다른 일례를 나타내는 도면이다.
[도 13] 도 11에 나타낸 양음의 전압을 반복하여 인가한 경우의 시간과 방전 용량의 관계를 나타낸 도면이다.
[도 14] 종래예를 설명하기 위한 도면이다.
12 : 제1 전극
14 : n형 금속 산화물 반도체층
16 : 충전층
18 : 중간 절연층
22 : p형 금속 산화물 반도체층
24 : 제2 전극
30 : 전압원
32 : 전압계
34 : 전류계
36 : 제어 장치
38 : 저항
39 : 피전압 인가 2차전지
40, 40-1, 40-2, 40-3, 40-4, 40-5 : 전압 파형
Claims (15)
- 제1 전극,
n형 금속 산화물 반도체로 이루어지는 n형 금속 산화물 반도체층,
n형 금속 산화물 반도체와 절연체로 이루어지는 충전층,
절연체를 주성분으로 하는 중간 절연층,
p형 금속 산화물 반도체로 이루어지는 p형 금속 산화물 반도체층, 및
제2 전극
을 상기 순서로 적층한 후에,
상기 제1 전극을 기준으로 하여 상기 제1 전극과 상기 제2 전극 사이에 양전압을 인가하는 제1 프로세스, 및 상기 제1 전극을 기준으로 하여 상기 제1 전극과 상기 제2 전극 사이에 0V를 인가하는 제2 프로세스를 제1 단위 사이클로 하고, 미리 정해진 수의 상기 제1 단위 사이클을 반복하는,
산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 전극을 그라운드 접속한 경우, 상기 제1 프로세스에 있어서의 상기 제2 전극에 인가하는 양전압의 값은, 적어도 상기 산화물 반도체 2차전지의 충전 전압 이상의 값을 포함하는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 프로세스에는, 상기 제1 전극과 상기 제2 전극 사이에 양전압이 인가된 상태를 일정 시간 유지하는 프로세스가 포함되고,
상기 제2 프로세스에는, 상기 제1 전극과 상기 제2 전극 사이에 0V가 인가된 상태를 일정 시간 유지하는 프로세스가 포함되어 있는, 산화물 반도체 2차전지의 제조 방법. - 제3항에 있어서,
상기 제1 프로세스에 있어서, 상기 제1 전극과 상기 제2 전극 사이에 인가하는 양전압은, 사이클마다 상이한 전압값이 설정되는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 프로세스에 있어서, 상기 제1 전극과 상기 제2 전극 사이를 흐르는 전류의 값이, 상기 제1 프로세스에서 미리 정해져 있는 전류값을 초과하지 않도록, 상기 제1 전극과 상기 제2 전극 사이에 인가하는 양전압을 각 프로세스에서 제어하는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 프로세스에 있어서의, 양전압을 인가하는 양전압 인가 시간은, 상기 산화물 반도체 2차전지의 방전 용량의 증가와 함께 길게 하는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
양전압을 인가하는 양전압 인가 시간은, 상기 산화물 반도체 2차전지의 전압값이 미리 정해진 설정 전압값에 도달할 때까지의 시간인, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 프로세스 및 상기 제2 프로세스에 부가하여,
상기 산화물 반도체 2차전지의 방전 용량을 측정하는 제3 프로세스를 포함하고,
상기 제1 단위 사이클을 소정의 사이클수 반복한 후에, 상기 제3 프로세스를 실행하고,
상기 산화물 반도체 2차전지의 방전 용량이 미리 정해진 임계값 이상인 것이 측정된 경우에 전압의 인가를 종료시키는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 제1 프로세스 및 상기 제2 프로세스에 부가하여,
상기 산화물 반도체 2차전지의 방전 용량을 측정하는 제3 프로세스, 및
상기 제3 프로세스에서 측정된 방전 용량에 기초하여, 상기 산화물 반도체 2차전지의 방전 용량의 증가율을 소정의 시간 간격으로 산출하는 제4 프로세스를 포함하고,
상기 제1 단위 사이클을 소정의 사이클수 반복한 후에, 상기 제3 프로세스 및 상기 제4 프로세스를 실행하고,
상기 방전 용량의 증가율이 미리 정해진 임계값 이하인 경우에 전압의 인가를 종료시키는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 중간 절연층은, 실리콘 오일 또는 상기 저항 조정제가 첨가된 실리콘 오일을 상기 충전층의 표면 상에 도포한 후, 소성하고, 소성 후에 자외선을 조사(照射)하여 UV 경화시키는 것에 의해 형성하는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 중간 절연층은, 실리콘(Si)을 타겟으로 하는 스퍼터링에 의해 상기 충전층 위에 형성하는, 산화물 반도체 2차전지의 제조 방법. - 제1항에 있어서,
상기 중간 절연층의 절연체는 SiOx(0≤x≤2)인, 산화물 반도체 2차전지의 제조 방법. - 제1항 또는 제13항에 있어서,
상기 p형 금속 산화물 반도체는 산화니켈(NiO)인, 산화물 반도체 2차전지의 제조 방법. - 제1 전극,
n형 금속 산화물 반도체로 이루어지는 n형 금속 산화물 반도체층,
n형 금속 산화물 반도체와 절연체로 이루어지는 충전층,
절연체를 주성분으로 하는 중간 절연층,
p형 금속 산화물 반도체로 이루어지는 p형 금속 산화물 반도체층, 및
제2 전극
을 상기 순서로 적층한 후에,
상기 제1 전극을 기준으로 하여 상기 제1 전극과 상기 제2 전극 사이에 양전압을 인가하는 제5 프로세스, 및 상기 제1 전극을 기준으로 하여 상기 제1 전극과 상기 제2 전극 사이에 음전압을 인가하는 제6 프로세스를 제2 단위 사이클로 하고, 미리 정해진 수의 상기 제2 단위 사이클을 반복하는,
산화물 반도체 2차전지의 제조 방법. - 제1항 또는 제14항에 있어서,
습도가 35∼65% 이내인 습도 환경 하에서, 상기 제1 전극과 상기 제2 전극 사이에 전압을 인가하는, 산화물 반도체 2차전지의 제조 방법.
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