WO2010040516A1 - Kohlenstoffbeschichteter lithiumtitan-spinell - Google Patents

Kohlenstoffbeschichteter lithiumtitan-spinell Download PDF

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Publication number
WO2010040516A1
WO2010040516A1 PCT/EP2009/007196 EP2009007196W WO2010040516A1 WO 2010040516 A1 WO2010040516 A1 WO 2010040516A1 EP 2009007196 W EP2009007196 W EP 2009007196W WO 2010040516 A1 WO2010040516 A1 WO 2010040516A1
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WO
WIPO (PCT)
Prior art keywords
titanium oxide
lithium titanium
lithium
carbon
carbonaceous
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.)
Ceased
Application number
PCT/EP2009/007196
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German (de)
English (en)
French (fr)
Inventor
Jasmin Dollinger
Andreas Pollner
Michael Holzapfel
Nicolas Tran
Norbert Schall
Max Eisgruber
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Sued Chemie AG
Original Assignee
Sued Chemie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sued Chemie AG filed Critical Sued Chemie AG
Priority to EP09737344.3A priority Critical patent/EP2349931B1/de
Priority to CA2738853A priority patent/CA2738853A1/en
Priority to CN200980139531.6A priority patent/CN102186775B/zh
Priority to JP2011530412A priority patent/JP5671467B2/ja
Priority to KR1020117009922A priority patent/KR101358000B1/ko
Priority to US13/123,089 priority patent/US20110217593A1/en
Publication of WO2010040516A1 publication Critical patent/WO2010040516A1/de
Anticipated expiration legal-status Critical
Priority to US14/193,923 priority patent/US9085491B2/en
Ceased legal-status Critical Current

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    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
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    • B82—NANOTECHNOLOGY
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Definitions

  • this object is achieved by a carbon-containing lithium titanium oxide containing spherical (secondary) particle aggregates with a diameter of 1-80 ⁇ m, consisting of carbon-coated lithium titanium oxide primary particles.
  • the carbonaceous lithium titanium oxide according to the invention has a BET surface area (measured according to DIN 66134) of 1-10 m 2 / g, preferably ⁇ 10 m 2 / g, even more preferably ⁇ 8 m 2 / g and very particularly preferably ⁇ 5 m 2 / g.
  • Typical values in a most preferred embodiment are in the range of 3-5 m 2 / g.
  • the carbon content of the lithium titanium oxide according to the invention is 0.05 to 2 wt .-%, in very particularly preferred embodiments 0.05 to 0.5 wt .-%.
  • the lithium titanium spinels Lii + xTi 2 - ⁇ O 4 as described above may be of the space group Fd 3m or the mixed
  • Naphthol perylene, acrylonitrile and vinyl acetate, gelatin, cellulose, starch and their esters and ethers and their mixtures are preferred.
  • the selection of sugars has proven to be particularly preferred for carrying out the process according to the invention, since they dissolve particularly well in water.
  • lactose sucrose and sucrose are most preferred, most preferably lactose.
  • the lactose had the effect of reducing the viscosity of the original suspension, so that 25% less water had to be used to prepare a corresponding suspension than in the case without the addition of lactose. Subsequently, the mixture was poured into a Nubilosa spray dryer at an inlet temperature of about 300 0 C and an outlet temperature of 100 0 C spray dried.
  • Each anode consisted of 85% active material, 10%
  • Lithium titanate (Figure 3) better the material of the invention in which only 75% of the capacitance was measured at 4C. The current during charging and discharging was the same. The results thus show that the coated in-situ carbon-coated lithium titanate according to the invention has greater advantages in terms of its capacity ratio compared to a subsequently applied carbon coating or uncoated lithium titanate.

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  • Inorganic Compounds Of Heavy Metals (AREA)
PCT/EP2009/007196 2008-10-07 2009-10-07 Kohlenstoffbeschichteter lithiumtitan-spinell Ceased WO2010040516A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP09737344.3A EP2349931B1 (de) 2008-10-07 2009-10-07 Kohlenstoffbeschichteter lithiumtitan-spinell
CA2738853A CA2738853A1 (en) 2008-10-07 2009-10-07 Carbon-coated lithium titanium spinel
CN200980139531.6A CN102186775B (zh) 2008-10-07 2009-10-07 涂覆碳的锂钛尖晶石
JP2011530412A JP5671467B2 (ja) 2008-10-07 2009-10-07 炭素被覆スピネル型チタン酸リチウム
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US13/123,089 US20110217593A1 (en) 2008-10-07 2009-10-07 Carbon-coated lithium titanium spinel
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US9085491B2 (en) 2015-07-21

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