JP2010513193A - 結晶性ナノLiFeMPO4の合成 - Google Patents
結晶性ナノLiFeMPO4の合成 Download PDFInfo
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Abstract
Description
− 双極性非プロトン性添加剤、及び、前駆体成分としての、Li(I)、Fe(II)、P(v)、及び、Co(II)及びMn(II)のうちの一方又は双方を含有する、pH6〜10の水性混合物を製造する工程、
− 前記水性混合物を大気圧下での前記水性混合物の沸点以下の温度に加熱し、それによって結晶性のLiFe1-xMxPO4粉末を沈殿させる工程
を含む。得られた粉末を非酸化性条件で加熱することによる後処理に供することもできる。
本発明の他の実施態様は、上に定義された結晶性のLiFe1-xCoxPO4粉末と、導電性添加剤10質量%以下とを含有する、複合粉末に関する。他の実施態様は、前記複合粉末を用いて製造することができる電極混合物に関する。有機炭素含有物質、電子伝導性ポリマー、金属粉末及び金属繊維の分解から生じる導電性炭素、炭素繊維、アモルファス炭素が導電性添加剤として特に好適である。
− 低温での結晶性のLFMPの直接沈殿によって、焼結プロセスにつながるいかなる粒子の成長もが回避される。ナノメートルオーダーの粒度が得られる。これにより、粒子内のLiイオン輸送に基づく動力学制限が低減され、それによって電池の高速の充放電性が向上する。
図1:反応時間18h後のLiFe0.5Mn0.5PO4沈殿物のXRD
図2:LiFe0.5Mn0.5PO4のSEM画像
図3:LiFe0.5Mn0.5PO4の体積粒度分布及び累積分布(%対nm)
図4:反応時間18h後のLiFe0.5Co0.5PO4沈殿物のXRD
図5:LiFe0.5Co0.5PO4のSEM画像
図6:LiFe0.5Co0.5PO4の体積粒度分布及び累積分布(%対nm)
本発明を以下の実施例において詳説する。
第一の工程において、DMSOを、MnNO3・4H2O中の0.05M Mn(II)、FeSO4・7H2O中の0.05M Fe(II)、及びH3PO4中の0.1M P(v)の等モル溶液に添加し、撹拌下にH2O中に溶解させる。水50体積%及びDMSO50体積%(それぞれ約80モル%及び20モル%に相当する)の全組成に達するようにDMSOの量を調節する。
第一の工程において、DMSOを、MnSO4・H2O中の0.05M Mn(II)、CoNO3・6H2O中の0.05M Co(II)、及びH3PO4中の0.1M P(v)の等モル溶液に添加し、撹拌下にH2O中に溶解させる。水50体積%及びDMSO50体積%(それぞれ約80モル%及び20モル%に相当する)の全組成に達するようにDMSOの量を調節する。
Claims (23)
- 結晶性のLiFe1-xMxPO4[式中、MはCo及びMnのうちの一方又は双方であり、かつ0<x<1である]粉末を製造するための方法において、以下の工程:
− 双極性非プロトン性添加剤、及び、前駆体成分としての、Li(I)、Fe(II)、P(v)、及び、Co(II)及びMn(II)のうちの一方又は双方を含有する、pH6〜10の水性混合物を製造する工程、
− 前記水性混合物を大気圧下での前記水性混合物の沸点以下の温度に加熱し、それによって結晶性のLiFe1-xMxPO4粉末を沈殿させる工程
を含む方法。 - LiFe1-xMxPO4粉末を非酸化性条件で加熱することによって前記粉末を後処理する工程が後に続く、請求項1記載の方法。
- 結晶性のLiFe1-xMxPO4粉末の製造、又は、非酸化性雰囲気中での加熱による後処理を、少なくとも1の他の成分、特に炭素含有又は電子伝導物質又は電子伝導物質の前駆体の存在で行う、請求項1又は2記載の方法。
- Li(I)の少なくとも一部をLiOHとして導入する、請求項1記載の方法。
- P(v)の少なくとも一部をH3PO4として導入する、請求項1記載の方法。
- H3PO4に対するLiOHの比を調節することによって、水性混合物のpHを達成する、請求項4又は5記載の方法。
- 水性混合物の大気圧下での沸点が、100〜150℃、有利に100〜120℃である、請求項1から6までのいずれか1項記載の方法。
- 水性混合物中に含有される双極性非プロトン性添加剤がジメチルスルホキシドである、請求項1から7までのいずれか1項記載の方法。
- LiFe1-xMxPO4の後処理工程を、675℃以下、有利に少なくとも300℃の温度で行う、請求項2から8までのいずれか1項記載の方法。
- 電子伝導物質が、炭素、特に導電性炭素又は炭素繊維である、請求項3から9までのいずれか1項記載の方法。
- 電子伝導物質の前駆体が、炭素導電性物質、特にポリマー又は糖型高分子である、請求項3から9までのいずれか1項記載の方法。
- 電池における電極材料として使用するための、100nm未満、有利に30nm超の平均粒度d50を有する粒度分布を有する結晶性のLiFe1-xMnxPO4[式中、0<x<1である]粉末。
- 最大粒度が500nm以下である、請求項12記載のLiFe1-xMnxPO4粉末。
- 粒度分布が単峰性であり、かつ比(d90−d10)/d50が1.5未満、有利に1.3未満である、請求項12又は13記載のLiFe1-xMnxPO4粉末。
- 請求項12から14までのいずれか1項記載のLiFe1-xMnxPO4粉末と、導電性添加剤10質量%以下とを含有する、複合粉末。
- 請求項15記載の複合粉末を含有する電極混合物。
- 請求項15記載の複合粉末を導電性炭素含有添加剤と混合することによってリチウム挿入型電極を製造するための、請求項15記載の複合粉末の使用。
- 電池における電極材料として使用するための、300nm未満、有利に30nm超の平均粒度d50を有する粒度分布を有する結晶性のLiFe1-xCoxPO4[式中、0<x<1である]粉末。
- 最大粒度が900nm以下である、請求項18記載のLiFe1-xCoxPO4粉末。
- 粒度分布が単峰性であり、かつ比(d90−d10)/d50が1.5未満、有利に1.1未満である、請求項18又は19記載のLiFe1-xCoxPO4粉末。
- 請求項18から20までのいずれか1項記載のLiFe1-xMnxPO4粉末と、導電性添加剤10質量%以下とを含有する、複合粉末。
- 請求項21記載の複合粉末を含有する電極混合物。
- 請求項21記載の複合粉末を導電性炭素含有添加剤と混合することによってリチウム挿入型電極を製造するための、請求項21記載の複合粉末の使用。
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06292048.3 | 2006-12-22 | ||
| EP06292048 | 2006-12-22 | ||
| US88150907P | 2007-01-22 | 2007-01-22 | |
| US60/881,509 | 2007-01-22 | ||
| PCT/EP2007/009969 WO2008077448A1 (en) | 2006-12-22 | 2007-11-19 | SYNTHESIS OF CRYSTALLINE NANOMETRIC LiFeMPO4 |
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| Publication Number | Publication Date |
|---|---|
| JP2010513193A true JP2010513193A (ja) | 2010-04-30 |
| JP2010513193A5 JP2010513193A5 (ja) | 2010-06-17 |
| JP5479106B2 JP5479106B2 (ja) | 2014-04-23 |
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| JP2009541796A Active JP5479106B2 (ja) | 2006-12-22 | 2007-11-19 | 結晶性ナノLiFeMPO4の合成 |
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|---|---|
| US (3) | US8066916B2 (ja) |
| EP (1) | EP2094605B1 (ja) |
| JP (1) | JP5479106B2 (ja) |
| CA (1) | CA2672954C (ja) |
| WO (1) | WO2008077448A1 (ja) |
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| WO2011115211A1 (ja) * | 2010-03-19 | 2011-09-22 | 戸田工業株式会社 | リン酸マンガン鉄リチウム粒子粉末の製造方法、リン酸マンガン鉄リチウム粒子粉末、及び該粒子粉末を用いた非水電解質二次電池 |
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| JPWO2022097400A1 (ja) * | 2020-11-06 | 2022-05-12 |
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| WO2011118350A1 (en) * | 2010-03-26 | 2011-09-29 | Semiconductor Energy Laboratory Co., Ltd. | Power storage device |
| JP5917027B2 (ja) | 2010-06-30 | 2016-05-11 | 株式会社半導体エネルギー研究所 | 電極用材料の作製方法 |
| RU2444815C1 (ru) * | 2010-08-27 | 2012-03-10 | Учреждение Российской академии наук Институт химии твердого тела и механохимии Сибирского отделения РАН (ИХТТМ СО РАН) | СПОСОБ ПОЛУЧЕНИЯ ВЫСОКОДИСПЕРСНЫХ КАТОДНЫХ МАТЕРИАЛОВ LixFeyMzPO4/C СО СТРУКТУРОЙ ОЛИВИНА |
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| WO2011115211A1 (ja) * | 2010-03-19 | 2011-09-22 | 戸田工業株式会社 | リン酸マンガン鉄リチウム粒子粉末の製造方法、リン酸マンガン鉄リチウム粒子粉末、及び該粒子粉末を用いた非水電解質二次電池 |
| JP2013530112A (ja) * | 2010-04-30 | 2013-07-25 | 三星精密化学株式会社 | リチウム遷移金属リン酸塩の製造方法 |
| US9537149B2 (en) | 2010-04-30 | 2017-01-03 | Samsung Sdi Co., Ltd. | Method for manufacturing a lithium transition metal phosphate |
| US9109286B2 (en) | 2010-06-18 | 2015-08-18 | Semiconductor Energy Laboratory Co., Ltd. | Method of manufacturing power storage device |
| JPWO2022097400A1 (ja) * | 2020-11-06 | 2022-05-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| US8066916B2 (en) | 2011-11-29 |
| US20120085975A1 (en) | 2012-04-12 |
| WO2008077448A1 (en) | 2008-07-03 |
| CA2672954C (en) | 2014-07-22 |
| JP5479106B2 (ja) | 2014-04-23 |
| US9051184B2 (en) | 2015-06-09 |
| US20100084615A1 (en) | 2010-04-08 |
| EP2094605B1 (en) | 2012-09-05 |
| US8105508B2 (en) | 2012-01-31 |
| EP2094605A1 (en) | 2009-09-02 |
| US20100327222A1 (en) | 2010-12-30 |
| CA2672954A1 (en) | 2008-07-03 |
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