Stable Trifluorostyrene Containing Compounds, And Their Use In Polymer Electroyte Membranes
申请人:Yang Zhen-yu
公开号:US20080032184A1
公开(公告)日:2008-02-07
A monomer comprising the structure (1a) or (1b) wherein Z comprises S, SO
2
, or POR wherein R comprises a linear or branched perfluoroalkyl group of 1 to 14 carbon atoms optionally containing oxygen or chlorine, an aryl or substituted aryl group of 6 to 12 carbon atoms, or an alkyl of 1 to 8 carbon atoms; R
F
comprises a linear or branched perfluoroalkene group of 1 to 20 carbon atoms, optionally containing oxygen or chlorine; Q is chosen from F, —OM, NH2, —N(M)SO
2
R
2
F
, and —C(M)(SO
2
R
2
F)
2
, wherein M comprises H, an alkali cation, or ammonium; and R
2
F groups comprise perfluorinated or partially fluorinated alkyl, and may optionally include ether oxygens; and n is 1 or 2 for (1a), and n is 1, 2, or 3 for (1b). These monomers are used in the preparation of homopolymers and copolymers that are useful in preparing polymer electrolyte membranes. Electrochemical cells, such as fuel cells, containing these membranes are also described.