KR101304110B1 - 고결정성 리튬 전이금속 산화물 - Google Patents
고결정성 리튬 전이금속 산화물 Download PDFInfo
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Abstract
상기 분말형 산화물에 있어서, K 알파 방사선으로 측정되며, 지수 104를 갖는 44.5°± 0.3°에서 X-선 회절 피크는 ≤ 0.1°의 FWHM 값을 갖는 것을 특징으로 한다. 상기 금속 산화물의 소결 온도를 최적화함으로써 FWHM 값이 최소화될 수 있다.
Description
도 2는 산란각의 함수로서 FWHM이고,
도 3은 상세한 피크 분리를 갖는 X-선 회절 패턴이다.
Claims (10)
- 층상 결정 구조 Li1+aM1-aO2±bM'kSm [여기서, -0.03 < a < 0.06, b 0, 0.15 < m ≤ 0.6, m은 몰%(mol%)로 표시되며, M은 그룹 Ni, Mn, Co 및 Ti 중에서 하나 또는 그 이상의 원소를 적어도 95% 구성하는 전이금속 화합물이고; M'은 분말형 산화물의 표면에 존재하며, 그룹 Ca, Sr, Y, La, Ce 및 Zr 중에서 하나 또는 그 이상의 원소로 구성되며, k = 0이고 M = Ni1-c-dMncCod(여기서, 0<c<1, 0<d<1)이거나; 또는 0.015 < k < 0.15(k는 상기 리튬 전이금속 산화물의 중량%로 표시함)임]을 갖는 분말형 리튬 전이금속 산화물로서,
상기 분말형 산화물에 있어서, K 알파 방사선으로 측정되며, 지수 104를 갖는 44.5°± 0.3°에서 X-선 회절 피크는 ≤ 0.1°의 FWHM(반치폭) 값을 갖는 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 1 항에 있어서,
지수 003을 갖는 18.6°± 0.2°에서 X-선 회절 피크는 ≤ 0.1°의 FWHM 값을 갖는 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 1 항 또는 제 2 항에 있어서,
중량%로 0.0250 < k ≤ 0.1인 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 1 항 또는 제 2 항에 있어서,
M'은 Ca이고, 중량%로 0.0250 ≤ k < 0.0500이며, 몰%로 0.25 ≤ m ≤ 0.6인 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 1 항 또는 제 2 항에 있어서,
0 < k < 0.15(k는 상기 금속 산화물의 중량%로 표시함)이고, M = Ni1-c-dMncCod(여기서, 0<c<1, 0<d<1)인 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 5 항에 있어서,
c = d = 0.333인 것을 특징으로 하는 분말형 리튬 전이금속 산화물. - 제 1 항 또는 제 2 항에 따른 분말형 리튬 전이금속 산화물의 결정성(crystallinity)을 개선시키는 방법으로서,
상기 금속 산화물은 1시간 내지 48시간의 시간(t)동안 적어도 900 ℃의 온도(T)에서 Li 전구물질과 함께 M-히드록시드, -옥시히드록시드 또는 -카보네이트 전구물질을 소결시킴으로써 수득되며,
0.99 내지 1.1의 (1+a)/(1-a)에 대한 값을 선택하고, K 알파 방사선으로 측정되며 지수 104를 갖는 44.5°± 0.3°에서 상기 리튬 전이금속 산화물의 X-선 회절 피크가 ≤ 0.1°의 FWHM 값을 갖도록 상기 소결 온도를 선택하는 단계를 포함하는 것을 특징으로 하는 결정성 개선 방법. - 제 7 항에 있어서,
지수 003을 가지며 18.6°± 0.2°에서 상기 리튬 전이금속 산화물의 X-선 회절 피크가 ≤ 0.1°의 FWHM 값을 갖도록 상기 소결 온도를 선택하는 단계를 추가로 포함하는 것을 특징으로 하는 결정성 개선 방법. - 제 7 항에 있어서,
Li 전구물질은 리튬 카보네이트인 것을 특징으로 하는 결정성 개선 방법.
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EPPCT/EP2008/006411 | 2008-08-04 | ||
EPPCT/EP2008/006411 | 2008-08-04 | ||
PCT/EP2009/005600 WO2010015368A1 (en) | 2008-08-04 | 2009-08-03 | Highly crystalline lithium transition metal oxides |
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KR20110043693A KR20110043693A (ko) | 2011-04-27 |
KR101304110B1 true KR101304110B1 (ko) | 2013-09-05 |
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US (1) | US8343390B2 (ko) |
JP (1) | JP5389170B2 (ko) |
KR (1) | KR101304110B1 (ko) |
CN (1) | CN102119128A (ko) |
CA (1) | CA2735245A1 (ko) |
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JP5349700B2 (ja) | 2010-12-20 | 2013-11-20 | 三洋電機株式会社 | 非水電解質二次電池用正極及びその正極を用いた非水電解質二次電池 |
EP2673823B1 (en) * | 2011-02-07 | 2015-12-09 | Umicore | High nickel cathode material having low soluble base content |
JP5920872B2 (ja) * | 2011-11-25 | 2016-05-18 | 株式会社田中化学研究所 | リチウム金属複合酸化物及びその製造方法 |
JP5601337B2 (ja) * | 2012-03-27 | 2014-10-08 | Tdk株式会社 | 活物質及びリチウムイオン二次電池 |
WO2013183711A1 (ja) | 2012-06-06 | 2013-12-12 | 住友金属鉱山株式会社 | ニッケル複合水酸化物、非水系電解質二次電池用正極活物質、非水系電解質二次電池、およびこれらの製造方法 |
JP6133720B2 (ja) | 2013-07-24 | 2017-05-24 | 住友金属鉱山株式会社 | 非水電解質二次電池用正極活物質とその製造方法、並びに、非水電解質二次電池 |
JP6252010B2 (ja) | 2013-07-24 | 2017-12-27 | 住友金属鉱山株式会社 | 非水電解質二次電池用正極活物質およびその製造方法、並びに、非水電解質二次電池 |
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- 2009-08-03 CN CN2009801309876A patent/CN102119128A/zh active Pending
- 2009-08-03 CA CA2735245A patent/CA2735245A1/en not_active Abandoned
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CN102119128A (zh) | 2011-07-06 |
JP5389170B2 (ja) | 2014-01-15 |
JP2011529849A (ja) | 2011-12-15 |
WO2010015368A1 (en) | 2010-02-11 |
US20110193013A1 (en) | 2011-08-11 |
KR20110043693A (ko) | 2011-04-27 |
US8343390B2 (en) | 2013-01-01 |
CA2735245A1 (en) | 2010-02-11 |
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