KR20160010555A - 황화물 고체 전해질 재료, 황화물 유리, 리튬 고체 전지, 및, 황화물 고체 전해질 재료의 제조 방법 - Google Patents
황화물 고체 전해질 재료, 황화물 유리, 리튬 고체 전지, 및, 황화물 고체 전해질 재료의 제조 방법 Download PDFInfo
- Publication number
- KR20160010555A KR20160010555A KR1020157035601A KR20157035601A KR20160010555A KR 20160010555 A KR20160010555 A KR 20160010555A KR 1020157035601 A KR1020157035601 A KR 1020157035601A KR 20157035601 A KR20157035601 A KR 20157035601A KR 20160010555 A KR20160010555 A KR 20160010555A
- Authority
- KR
- South Korea
- Prior art keywords
- solid electrolyte
- sulfide
- electrolyte material
- peak
- sulfide solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Classifications
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- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
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- C—CHEMISTRY; METALLURGY
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- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
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- C—CHEMISTRY; METALLURGY
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- C03C3/00—Glass compositions
- C03C3/32—Non-oxide glass compositions, e.g. binary or ternary halides, sulfides or nitrides of germanium, selenium or tellurium
- C03C3/321—Chalcogenide glasses, e.g. containing S, Se, Te
- C03C3/323—Chalcogenide glasses, e.g. containing S, Se, Te containing halogen, e.g. chalcohalide glasses
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/18—Compositions for glass with special properties for ion-sensitive glass
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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
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- H01M10/052—Li-accumulators
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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Abstract
본 발명은, Li, P, I, 및 S 를 갖고, CuKα선을 사용한 X 선 회절 측정에 있어서, 2θ = 20.2°, 23.6°에 피크를 가지며, 또한, 2θ = 21.0°, 28.0°에 피크를 갖지 않고, 상기 2θ = 20.2°의 피크의 반치폭이 0.51°이하인 것을 특징으로 하는 황화물 고체 전해질 재료를 제공함으로써 상기 과제를 해결한다.
Description
도 2 는, 본 발명의 황화물 고체 전해질 재료의 제조 방법의 일례를 나타내는 플로 차트이다.
도 3 은, 조성 A ∼ C 의 황화물 유리에 대한 DTA 분석의 결과이다.
도 4 는, 비교예 1-1 ∼ 1-4 및 실시예 1-1 ∼ 1-4 에서 얻어진 황화물 고체 전해질 재료에 대한 Li 이온 전도도 측정의 결과이다.
도 5 는, 비교예 1-1 ∼ 1-4 에서 얻어진 황화물 고체 전해질 재료에 대한 X 선 회절 측정의 결과이다.
도 6 은, 실시예 1-1 ∼ 1-4 에서 얻어진 황화물 고체 전해질 재료에 대한 X 선 회절 측정의 결과이다.
도 7 은, Li2S 비율과 결정화 온도의 관계를 나타내는 그래프이다.
도 8 은, Li2S 비율과 Li 이온 전도도의 결과를 나타내는 그래프이다.
도 9 는, 조성 A, D 의 황화물 유리에 대한 DTA 분석의 결과이다.
도 10 은, 비교예 3-1 ∼ 3-3 에서 얻어진 황화물 고체 전해질 재료에 대한 X 선 회절 측정의 결과이다.
도 11 은, 실시예 3-1 ∼ 3-3, 참고예 3-1 및 비교예 3-4 에서 얻어진 황화물 고체 전해질 재료에 대한 X 선 회절 측정의 결과이다.
도 12 는, 열처리 시간과 Li 이온 전도도의 관계를 나타내는 그래프이다.
도 13 은, 열처리 시간과 Li 이온 전도도의 관계를 나타내는 그래프이다.
도 14 는, 실시예 4-1, 4-2 및 참고예 4-1 에서 얻어진 황화물 고체 전해질 재료에 대한 X 선 회절 측정의 결과이다.
2 : 부극 활물질층
3 : 고체 전해질층
4 : 정극 집전체
5 : 부극 집전체
10 : 리튬 고체 전지
Claims (8)
- Li, P, I, 및 S 를 갖고,
CuKα선을 사용한 X 선 회절 측정에 있어서, 2θ = 20.2°, 23.6°에 피크를 가지며, 또한, 2θ = 21.0°, 28.0°에 피크를 갖지 않고, 상기 2θ = 20.2°의 피크의 반치폭이 0.51°이하인 것을 특징으로 하는 황화물 고체 전해질 재료. - 제 1 항에 있어서,
Li, P, 및 S 를 갖는 이온 전도체와, LiI 와, LiBr 및 LiCl 의 적어도 일방으로 구성되어 있는 것을 특징으로 하는 황화물 고체 전해질 재료. - 제 2 항에 있어서,
상기 LiBr 을 갖고,
LiBr/(LiI + LiBr) 이 25 ㏖% ∼ 50 ㏖% 의 범위 내인 것을 특징으로 하는 황화물 고체 전해질 재료. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
Li2S, P2S5 및 LiI 를 적어도 함유하는 원료 조성물을 사용하여 이루어지고,
Li2S/(Li2S + P2S5) 가 76 ㏖% ∼ 78 ㏖% 의 범위 내인 것을 특징으로 하는 황화물 고체 전해질 재료. - Li, P, I, Br, 및 S 를 갖고,
CuKα선을 사용한 X 선 회절 측정에 있어서, 2θ = 20.2°, 23.6°에 피크를 갖는 고 Li 이온 전도상을 c1 로 하고, 2θ = 21.0°, 28.0°에 피크를 갖는 저 Li 이온 전도상을 cx 로 하고, 시차 열 분석에 있어서, 상기 c1 의 발열 피크의 온도를 Tc1 로 하고, 상기 cx 의 발열 피크의 온도를 Tcx 로 한 경우에, Tcx - Tc1 ≥ 55 ℃ 인 것을 특징으로 하는 황화물 유리. - 제 5 항에 있어서,
Li, P, 및 S 를 갖는 이온 전도체와, LiI 와, LiBr 로 구성되고,
LiBr/(LiI + LiBr) 이 25 ㏖% ∼ 50 ㏖% 의 범위 내인 것을 특징으로 하는 황화물 유리. - 정극 활물질을 함유하는 정극 활물질층과, 부극 활물질을 함유하는 부극 활물질층과, 상기 정극 활물질층 및 상기 부극 활물질층 사이에 형성된 고체 전해질층을 갖는 리튬 고체 전지로서,
상기 정극 활물질층, 상기 부극 활물질층 및 상기 고체 전해질층의 적어도 하나가, 제 1 항 내지 제 4 항 중 어느 한 항에 기재된 황화물 고체 전해질 재료를 함유하는 것을 특징으로 하는 리튬 고체 전지. - 제 1 항 내지 제 4 항 중 어느 한 항에 기재된 황화물 고체 전해질 재료의 제조 방법으로서,
Li2S, P2S5, 및 LiI 를 적어도 함유하는 원료 조성물을 비정질화하여, 황화물 유리를 얻는 비정질화 공정과,
상기 황화물 유리를 가열하는 열처리 공정을 갖고,
CuKα선을 사용한 X 선 회절 측정에 있어서, 2θ = 20.2°, 23.6°에 피크를 갖는 고 Li 이온 전도상을 c1 로 하고, 2θ = 21.0°, 28.0°에 피크를 갖는 저 Li 이온 전도상을 cx 로 하고, 시차 열 분석에 있어서, 상기 c1 의 발열 피크의 온도를 Tc1 로 하고, 상기 cx 의 발열 피크의 온도를 Tcx 로 한 경우에, Tcx - Tc1 ≥ 55 ℃ 인 상기 황화물 유리를 사용하는 것을 특징으로 하는 황화물 고체 전해질 재료의 제조 방법.
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| KR20210106906A (ko) * | 2020-02-21 | 2021-08-31 | 도요타지도샤가부시키가이샤 | 전고체 전지 |
| KR20220072176A (ko) * | 2020-11-25 | 2022-06-02 | 한국과학기술연구원 | 할로겐 원소가 도입된 리튬 이차전지용 황화물 유리질계 고체전해질 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3016198A4 (en) | 2016-06-29 |
| US20160149259A1 (en) | 2016-05-26 |
| CN105324878A (zh) | 2016-02-10 |
| CN105324878B (zh) | 2017-06-30 |
| KR101723331B1 (ko) | 2017-04-04 |
| EP3016198A1 (en) | 2016-05-04 |
| JP6003831B2 (ja) | 2016-10-05 |
| JP2015011901A (ja) | 2015-01-19 |
| EP3016198B1 (en) | 2018-05-16 |
| US11011775B2 (en) | 2021-05-18 |
| WO2014208239A1 (ja) | 2014-12-31 |
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