Fullerene based proton conductive materials
View Patent ↗A fullerene-based proton conductor including a proton conductive functional group connected to the fullerene by an at least partially fluorinated spacer molecule. Also, a polymer including at least two of the proton conductors that are connected by a linking molecule. Further, an electrochemical device employing the polymer as a proton exchange membrane, whereby the device is able to achieve a self-humidifying characteristic.
1. A proton conductive polymer comprising:
a plurality of proton conductors, each comprising a fullerene molecule, a spacer molecule comprising an at least partially fluorinated molecule attached to said fullerene molecule, a proton conductive functional group attached to said spacer molecule, and at least one linking molecule connected between two of said plurality of proton conductors; and
a compound capable of enhancing proton conductivity in the absence of water.
2. The proton conductive polymer of claim 1 , wherein said linking molecule is connected to the spacer molecules of at least two of said proton conductors.
3. The proton conductive polymer of claim 2 , wherein at least one fullerene of at least two of said proton conductors has attached thereto an additional functional group selected from the group consisting of an alkyl group, an aryl group, a non-fluorinated molecular group, a partially fluorinated molecular group, a perfluorinated molecular group, an ether group, an ester group, an amide group, a keto group and combinations thereof.
4. The proton conductive polymer of claim 2 , wherein said linking molecule is selected from the group of a partially fluorinated, a perfluorinated, sulfonylimide molecule and combinations thereof.
5. The proton conductive polymer of claim 4 , wherein said linking molecule includes an additional functional group that is selected from the group consisting of ethers, esters, amides, keto groups and combinations thereof.
6. The proton conductive polymer according to claim 1 , wherein said compound is selected from the group consisting of polyalkyl ethers, polyethylene carbonates, polyacryl amides, polyvinyl alcohols, polyethylene imines, alkyl carbonates, ethylene carbonate, propylene carbonate, fully fluorinated derivatives thereof partially fluorinated derivatives thereof, and combinations thereof.