KR960019833A - 정극활성물질, 그 제조방법 및 그것을 사용한 비수용매계 2차전지 - Google Patents

정극활성물질, 그 제조방법 및 그것을 사용한 비수용매계 2차전지 Download PDF

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KR960019833A
KR960019833A KR1019950040497A KR19950040497A KR960019833A KR 960019833 A KR960019833 A KR 960019833A KR 1019950040497 A KR1019950040497 A KR 1019950040497A KR 19950040497 A KR19950040497 A KR 19950040497A KR 960019833 A KR960019833 A KR 960019833A
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active material
positive electrode
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secondary battery
compound
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케이지로오 타카니시
요시오 마쯔다
쥰 쯔카모토
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마에다 카쯔노수케
토오레 카부시키가이샤
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    • C01G53/00—Compounds of nickel
    • C01G53/40—Nickelates
    • C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
    • C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
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    • C01G53/50—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese of the type [MnO2]n-, e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
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    • H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • H—ELECTRICITY
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    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
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Abstract

본 발명은 화학식 Lil-x-aAxNil-x-bBYO2로 나타나는 정극활성물질로 된 리튬이온 2차건전지의 정극활성물질에 대한 것이다.(단, A는 (1) 적어도 2종의 마그네슘, 칼슘, 스트론튬, 바륨의 2종 이상이거나( 2) 스트론튬 단독이거나 (3) 바륨 단독의 알카리토속금속이고, ; B는 Ni 이외에 적어도 1종 이상의 전이금속원소로 이루어지고, ; X는 A의 총몰수이나 A가 1종 이상의 알카리토류금속으로 된 경우 X는 모든 알카리토류금속원소의 총몰수이다. ; Y는 B의 총몰수이나, B가 1종 이상의 전이금속원소라면 Y는 전체 전이금속원소의 총몰수이다; 그리고 X, Y, a와 b는 다음의 방정식을 만족시킨다.
0 < x0.10
0 < Y0.30
-0.10a0.10
-0.15b0.15)
이 발명은 또한 리튬 2차건전지를 위한 정극활성물질을 만드는 다음의 방법에 대한 것이다.
리튬과 A를 가지는 출발원료를 니켈과 B를 가지는 출발원료와 혼합; 산화분위기에서 혼합물을 회화, 더 나아가 이 발명은 비수용매계 2차건전지에 대한 것이다.
본 발명은 고용량과 훌륭한 충·방전 사이클을 보이는 정주활성물질과 같은 기능을 가지는 2차건전지에 대한 것이다.

Description

정극활성물질, 그 제조방법 및 그것을 사용한 비수용매계 2차전지
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (21)

  1. 화학식 Lil-x-aAxNil-x-bBYO2(단, A는(1) 마그네슘, 칼슘, 스트론튬, 바륨의 2종 이상이거나 (2) 스트론튬 단독이거나 (3) 바륨 단독의 알카리토속금속이고, ; B는 Ni 이외에 적어도 1종 이상의 전이금속원소로 이루어지고, ; X는 A의 총몰수이나 A가 1종 이상의 알카리토류금속으로 된 경우 X는 모든 알카리토류금속원소의 총몰수이다. ; Y는 B의 총몰수이나, B가 1종 이상의 전이금속원소라면 Y는 전체 전이금속원소의 총몰수이다; 그리고 X, Y, a와 b는 다음의 방정식을 만족시킨다.
    0 〈 x0.10
    0 〈 Y0.30
    -0.10a0.10
    -0.15b0.15)
    로 나타내는 화합물인 것을 특징으로 하는 정극활성물질로 구성되는 리튬이온 2차 건전지.
  2. 제1항에 있어서, A가 스트론튬이나 바륨만으로 구성된 정극활성물질.
  3. 제1항에 있어서, A가 마그네슘, 칼슘, 스트론튬 그리고 바륨으로 2종이상으로 구성된 정극활성물질.
  4. 제1항에 있어서, X가 0〈X0.08을 만족시키는 정극활성물질.
  5. 제4항에 있어서, X가 O〈X0.05을 만족시키는 정극활성물질.
  6. 전기한 어떤 조항에 있어서도, Y가 0〈Y0.25를 만족시키는 정극활성물질.
  7. 제6항에 있어서, Y가 0〈Y0.20을 만족시키는 정극활성물질.
  8. 전기한 어떤 조항에 있어서도, a가 -0.05a0.05를 만족시키는 정극활성물질.
  9. 제8항에 있어서, a가 -0.02a0.02를 만족시키는 정극활성물질.
  10. 전기한 어떤 조항에 있어서도, b가 -0.08b0.08를 만족시키는 정극활성물질.
  11. 제10항에 있어서, b가 -0.04b0.04를 만족시키는 정극활성물질.
  12. 전기한 모든 항에 있어서, 리튬과 A를 함유하는 출발원료(a)를 니켈 및 B를 함유하나, 출발원료(b)에 대하여 화학당량비((a) : (b))를 1.00 : 1.00에서 1.25 : 1.00까지 비율로 조합하고; 산화분위기 속에서 혼합물을 회화하고; 알카리요소를 제거하는 것을 특징으로 하는 정극활성물질의 제조방법.
  13. 제12항에 있어서, 수세에 의해서 알카리요소를 제거하는 것을 특징으로 하는 제조방법.
  14. 제1항에서, 제11항까지에 있어서, 리튬과 A를 함유하나 출발원료(a)를 니켈 및 B를 함유하나, 출발원료 (b)에 대하여 화학당량비((a) : (b))를 1.90 : 1.00에서 1.00 : 1.00까지 비율로 조합하고; 산화분위기 속에서 혼합물을 회화하여; 알카리요소를 제거하는 것을 특징으로 하는 정극활성물질의 제조방법.
  15. 제1항에서 제11항의 어느 한 항에 있어서, 정극활성물질을 사용하는 것을 특징으로 하는 비수용매계 2차건전지.
  16. 비가역 캐퍼시티를 가지는 부극활성물질로 된 부극과, 화학식 Li2CuO2로 나타내는 리튬·구리복합산화물을 정극활성물질로 된 정극으로 구성된 비수용매계의 2차건전지.
  17. 제16항에 있어서, 제1항에 의해 만들어진 정극물질로 구성되는 비수용매계의 2차건전지.
  18. 제15항에 있어서, 제12항의 방법으로 만들어진 정극물질로 구성되는 비수용매계의 2차건전지.
  19. 제15, 16항에 있어서, 부극활성물질로 탄소질재료로 구성되어지는 비수용매제의 2차건전지.
  20. 제19항에 있어서, 탄소질재료가 탄소섬유인 경우의 비수용매계의 2차건전지.
  21. 제20항에 있어서, 탄소섬유의 평균길이가 100㎛ 이하인 경우의 비수용매계의 2차건전지.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950040497A 1994-11-09 1995-11-09 정극활성물질,그제조방법및그것을사용한비수용매계2차전지 KR100389052B1 (ko)

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JP27543294 1994-11-09
JP94-275432 1994-11-09
JP95-101081 1995-04-25
JP10108195 1995-04-25

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EP (1) EP0712172B1 (ko)
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CN (1) CN1076885C (ko)
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CN1076885C (zh) 2001-12-26
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CA2162456A1 (en) 1996-05-10
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US5679481A (en) 1997-10-21
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