Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Reexamination Certificate
2006-09-26
2010-11-16
Mulcahy, Peter D (Department: 1796)
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
C429S314000, C429S317000, C521S027000
Reexamination Certificate
active
07833643
ABSTRACT:
A neutral protic salt electrolyte and a protic-salt imbibed polymer electrolyte membrane exhibiting high ionic conductivity and thermal stability at temperatures greater than 100° C. without requiring additional humidification systems or hydrating water is disclosed. The protic salt is the neutral product of acids and bases for which the proton transfer energy lies in the range from 0.5 to 1.5 eV. A polymer electrolyte membrane having the general formula:wherein A is a repeating unit in the main chain, B is a crosslinker chain, C is an end group, YZ is a neutralized couple at chain end, IL is an ionic liquid, and NP is a nanoparticle which absorbs the protic liquid yielding membranes that combine high mechanical strength with high conductivity. The present polymer electrolyte membrane is useful in high temperature fuel cells for automotive, industrial, and mobile communication applications.
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patent: 2009/0133746 (2009-05-01), Jin et al.
Kerres, J.A., “Development of ionomer membranes for fuel cells,” J. Membrane Sciences, 185, 3-27 (2001).
Nolte, R., Ledjeff, K., Bauer, M., and Mulhaupt, R., “Partially sulfonated poly (axylene ether sulfone)- A versatile proton conducting membrane material for modern energy conversion technologies,” J. Membrane Sciences, 83,211-220 (1993).
Xu, W. and Angell, C.A., “Solvent-Free Electrolytes with Aqueous Solution- Like Conductivities,” Science, 302, 422-425 (2003).
Kerres, J.A., “Development of ionomer membranes for fuel cells,” J. Membrane Sciences, 185, 3 (2001).
Angell Charles Austen
Belieres Jean-Philippe
Gervasio Dominic Francis
Sun Xiao-Guang
Arizona Board of Regents for and on behalf of Arizona State Univ
Fish & Richardson P.C.
Hu Henry
Mulcahy Peter D
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