Composition of nano-tube composite polymer electrolyte and fabrication method thereof
First Claim
1. A composition of a nano-tube composite polymer electrolyte, comprising:
- a polymer substrate having main-chains and side-chains, which at least have an ether group, an acyl group, an amino group, a fluoro group or a Lewis base functional group;
a metal salt comprising a metal cation and an anion, wherein the metal salt and the polymer substrate form a polymer salt complex; and
a nano-tube modifier forming Lewis acid-base force with the polymer substrate and the polymer salt complex, wherein the nano-tube modifier is TiO2, SiO2, or Al2O3 and has a diameter from about 50 nm to about 160 nm.
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Abstract
This invention pertains to the composition and method for fabricating nano-tube composite polymer electrolyte. The composite polymer electrolyte is made by blending suitable amount of highly dispersed, nano-tube, such as titanium dioxide (TiO2), with highly amorphous polymer electrolyte, such as polyethylene oxide. The hollow nano-tube structure facilitates salt dissociation, serves temporarily storage for lithium ions, creates new conducting mechanism and improves the conductivity thereof. The subsequent thermal treatment and high electric field arrange the nano-tubes in order for increase of the dielectric constant thereof, which increased ion mobility at room temperature. The mechanical properties are also improved due to the physical cross-linking of the nano-tubes, suitable for industrial processing.
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8 Claims
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1. A composition of a nano-tube composite polymer electrolyte, comprising:
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a polymer substrate having main-chains and side-chains, which at least have an ether group, an acyl group, an amino group, a fluoro group or a Lewis base functional group; a metal salt comprising a metal cation and an anion, wherein the metal salt and the polymer substrate form a polymer salt complex; and a nano-tube modifier forming Lewis acid-base force with the polymer substrate and the polymer salt complex, wherein the nano-tube modifier is TiO2, SiO2, or Al2O3 and has a diameter from about 50 nm to about 160 nm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification