JP2006520525A - リチウムイオン・カソード材料の製造方法 - Google Patents
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Abstract
Description
この出願は、2003年3月14日出願の米国仮出願第60/454,884号および2004年1月13日出願の米国特許出願第10/757,645号の優先権を主張するものである。
ThD(g/ml)= [1024(MW)(N)]/[(CV)(NA)]
式中、1024は、1ミリリットルあたりの立方オングストロームの数であり、MWは、モルあたりのグラムで表した化合物の分子量であり、Nは、1単位格子あたりの分子単位の数であり、CVは、単位格子あたりの立方オングストロームで表した単位格子の体積であり、NAは、アボガドロ数(1モルあたり6.023×1023分子単位)である。単位格子は、結晶構造の反復する小さい物理単位である。構造の型および格子定数は、それらはともに単位格子体積を与えるが、X線回折によって決定することができる。本材料がα−NaFeO2型構造を有するので、格子体積は、格子定数aおよびcから以下のように算出することができる:
CV=(a2)(c)(cos(30°))
RVE=(DSC1)(VaveD)(ED)(DSC1/CSC1)。
LiOH・H2O(98%+、アルドリッチ・ケミカル社(Aldrich Chemical Co.)、ウィスコンシン州ミルウォーキー(Milwaukee))、
CoSO4・7H2O(99%+、イリノイ州ハイランド(Highland)のシグマ−アルドリッチ社(Sigma−Aldrich Co.))、
NiSO4・6H2O(98%、アルファ・エイザール(Alfa Aesar)、マサチューセッツ州ワードヒル(Ward Hill))、および
MnSO4・H2O(フィッシャー・サイエンティフィック(Fisher Scientific)、ニューハンプシャー州ハンプトン(Hampton))。
明示してない場合、化学物質は、アルドリッチ・ケミカル社(ウィスコンシン州ミルウォーキー)から得た。全ての百分率は重量による。
Claims (20)
- Liy[NixCo1-2xMnx]O2(式中、0.025≦x≦0.45および0.9≦y≦1.3)を製造する方法であって、
[NixCo1-2xMnx]OH2を、LiOHまたはLi2CO3、並びに、焼結剤としてアルカリ金属フッ化物およびホウ素化合物の一方または両方と混合するステップと、
得られた混合物を、リチウムイオン電池に使用するのに十分に緻密なLiy[NixCo1-2xMnx]O2の組成物が得られるまで加熱するステップと、
を含む方法。 - 前記得られた混合物が、少なくとも約900℃に加熱される、請求項1に記載の方法。
- 前記得られた混合物が、少なくとも約3時間加熱される、請求項1に記載の方法。
- 前記得られた混合物が、少なくとも約6時間加熱される、請求項1に記載の方法。
- 前記混合される焼結剤の量が、前記得られた混合物の約0.1〜約5.0重量パーセントである、請求項1に記載の方法。
- 前記混合される焼結剤の量が、前記得られた混合物の約0.2〜約3.0重量パーセントの範囲である、請求項1に記載の方法。
- 前記得られた混合物が、約3時間加熱される、請求項5に記載の方法。
- 前記混合される焼結剤の量が、前記得られた混合物の約10重量パーセント未満である、請求項1に記載の方法。
- 前記得られた緻密な組成物が、Wh/Lで評価して少なくとも約[1833−333x](0.025≦x≦0.45)の可逆体積エネルギーを示す、請求項1に記載の方法。
- 前記得られた緻密な組成物のペレット密度が、理論上の密度の少なくとも約72パーセントである、請求項1に記載の方法。
- 前記得られた緻密な組成物が、約3.3〜約4.0g/cm3の範囲のペレット密度を有する、請求項1に記載の方法。
- 前記焼結剤が、アルカリ金属フッ化物である、請求項1に記載の方法。
- 前記焼結剤が、LiFである、請求項12に記載の方法。
- 前記焼結剤が、ホウ素の化合物である、請求項1に記載の方法。
- 前記焼結剤が、酸化ホウ素、ホウ酸、およびホウ酸リチウムからなる群から選択される、請求項14に記載の方法。
- 請求項1に記載の方法によって製造され、かつ、Wh/Lで評価して式[1833−333x](0.025≦x≦0.45)によって特徴付けられる最小可逆体積エネルギーを示すリチウム遷移金属酸化物組成物。
- 一般式Liy[NixCo1-2xMnx]O2(式中、0.025≦=x≦0.45および0.9≦y≦1.3)を有し、かつ、Wh/Lで評価して式[1833−333x]によって特徴付けられる最小可逆体積エネルギーを示す、リチウムイオン電池に使用するリチウム遷移金属酸化物。
- 理論上の密度の少なくとも約72%のペレット密度を示す、請求項16に記載のリチウム遷移金属酸化物。
- 理論上の密度の少なくとも約72%のペレット密度を示す、請求項17に記載のリチウム遷移金属酸化物。
- 約1500〜約2200Wh/Lの範囲の可逆体積エネルギーを有するリチウムイオン電池電極の形成に用いられる、請求項19に記載のリチウム遷移金属酸化物。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45488403P | 2003-03-14 | 2003-03-14 | |
US60/454,884 | 2003-03-14 | ||
US10/757,645 US7556655B2 (en) | 2003-03-14 | 2004-01-13 | Method of producing lithium ion cathode materials |
US10/757,645 | 2004-01-13 | ||
PCT/US2004/007239 WO2004084330A2 (en) | 2003-03-14 | 2004-03-10 | Method of producing lithium ion cathode materials |
Publications (3)
Publication Number | Publication Date |
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JP2006520525A true JP2006520525A (ja) | 2006-09-07 |
JP2006520525A5 JP2006520525A5 (ja) | 2007-04-26 |
JP4847317B2 JP4847317B2 (ja) | 2011-12-28 |
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JP2006507018A Expired - Fee Related JP4847317B2 (ja) | 2003-03-14 | 2004-03-10 | リチウムイオン・カソード材料の製造方法 |
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Country | Link |
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US (2) | US7556655B2 (ja) |
EP (1) | EP1604416A2 (ja) |
JP (1) | JP4847317B2 (ja) |
KR (1) | KR20050111764A (ja) |
CN (1) | CN1778003B (ja) |
WO (1) | WO2004084330A2 (ja) |
Cited By (8)
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JP2005050582A (ja) * | 2003-07-30 | 2005-02-24 | Mitsubishi Chemicals Corp | リチウム二次電池用正極及びそれを用いたリチウム二次電池 |
WO2009069521A1 (ja) * | 2007-11-26 | 2009-06-04 | Namics Corporation | リチウムイオン二次電池、及び、その製造方法 |
JP2011150817A (ja) * | 2010-01-19 | 2011-08-04 | Ohara Inc | 全固体電池 |
WO2011111377A1 (ja) * | 2010-03-10 | 2011-09-15 | パナソニック株式会社 | 非水電解液二次電池用正極活物質とその製造方法およびそれを用いた非水電解液二次電池 |
WO2011158575A1 (ja) * | 2010-06-18 | 2011-12-22 | 日本碍子株式会社 | リチウム二次電池の正極活物質の製造方法 |
JP2013500554A (ja) * | 2009-07-24 | 2013-01-07 | エンビア・システムズ・インコーポレイテッド | 長期サイクル性能を備えるリチウムイオン電池 |
US8709662B2 (en) | 2010-06-18 | 2014-04-29 | Ngk Insulators, Ltd. | Method for producing cathode active material for a lithium secondary battery |
WO2022137360A1 (ja) * | 2020-12-22 | 2022-06-30 | 日本碍子株式会社 | リチウム複合酸化物焼結板及び全固体二次電池 |
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US8389160B2 (en) | 2008-10-07 | 2013-03-05 | Envia Systems, Inc. | Positive electrode materials for lithium ion batteries having a high specific discharge capacity and processes for the synthesis of these materials |
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US8475959B2 (en) | 2009-08-27 | 2013-07-02 | Envia Systems, Inc. | Lithium doped cathode material |
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Also Published As
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CN1778003A (zh) | 2006-05-24 |
KR20050111764A (ko) | 2005-11-28 |
WO2004084330A2 (en) | 2004-09-30 |
US7556655B2 (en) | 2009-07-07 |
JP4847317B2 (ja) | 2011-12-28 |
EP1604416A2 (en) | 2005-12-14 |
US20040179993A1 (en) | 2004-09-16 |
CN1778003B (zh) | 2011-10-05 |
WO2004084330A3 (en) | 2005-10-20 |
US20090230349A1 (en) | 2009-09-17 |
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