Method of producing hybrid nano-filament electrodes for lithium metal or lithium ion batteries
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United States of America Patent
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Dec 9, 2014
Grant Date -
Jul 2, 2009
app pub date -
Mar 20, 2008
filing date -
Jan 2, 2008
priority date (Note) -
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Abstract
Disclosed is a method of producing a hybrid nano-filament composition for use in a lithium battery electrode. The method comprises: (a) providing an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, physically contacted, or chemically bonded to form a porous network of electrically conductive filaments, wherein the filaments comprise electro-spun nano-fibers that have a diameter less than 500 nm (preferably less than 100 nm); and (b) depositing micron- or nanometer-scaled coating onto a surface of the electro-spun nano-fibers, wherein the coating comprises an electro-active material capable of absorbing and desorbing lithium ions and the coating has a thickness less than 10 μm (preferably less than 1 μm). The same method can be followed to produce an anode or a cathode. The battery featuring an anode or cathode made with this method exhibits an exceptionally high specific capacity, an excellent reversible capacity, and a long cycle life.
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International Classification(s)
- D01D:MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE....
- B05D:PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MAT....
- H01M:PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT....
- D06M:TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D0....
- D01F:CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL....
- D04H:MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAME....
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