Anode Material for Lithium-Ion Batteries - Carbon coated CoO nanoparticles
The invention SEED describes a method of producing active material in lithium-ion batteries from carbon-containing CoO particles. The starting material Co3O4 is reduced by means of sucrose at 500 ° C to CoO or elemental Co. The resulting carbon-coated nanoparticles lead to increased electronic conductivity of the battery anode and prevent harmful agglomeration of the nanoparticles among themselves.
Enhanced coulombic efficiency
Improved cycling stability
Increased specific capacity compared to current standard electrode materials
Cost-effective and easily applicable for industrial production
Prototypes as well as further data and information available on demand
As sugar is an abundant and very cheap reduction agent, this technology can easily be integrated into an industrial production process.
Compared to other processes this is a rather mild way of reduction.
As sugar is an abundant and very cheap reduction agent, this technology can easily be integrated into an industrial production process. Compared to other processes this is a rather mild way of reduction. Therefore, the initial shape and size of the preliminary Co3O4 particles can be preserved. The enhanced electric conductivity of the so obtained CoO-composite leads to an improved cycling stability of cells with electrodes prepared of such material. Beside this, the process enables further reduction of cobalt oxide to elementary cobalt and can also be applied to other transition metals.
Licensing
24/02/2012 00:00:00
DE20111057015 20111223
- international:
C01G51/04; H01M4/133; H01M4/52
- cooperative:
B82Y30/00; C01G51/04; H01M4/364; H01M4/523; H01M4/587; C01P2002/72; C01P2002/76; C01P2004/04; C01P2004/16; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/12; H01M10/0525
Patent application
2944
德国
