Title:
イオン導電性スルホン化重合体材料
Document Type and Number:
Japanese Patent JP4234422
Kind Code:
B2
Abstract:
Sulfonated polymers are made by the direct polymerization of a sulfonated monomer to form the sulfonated polymers. The types of sulfonated polymers may include polysulfones or polyimides. The sulfonated polymers can be formed into membranes that may be used in proton exchange membrane fuel cells or as ion exchange membranes. The membranes formed form the sulfonated polymers exhibit improved properties over that of Nafion3. A heteropoly acid may be added to the sulfonated polymer to form a nanocomposite membrane in which the heteropoly acid is highly dispersed. The addition of a heteropoly acid to the sulfonated polymer increases the thermal stability of the membrane, enhances the conductivity above 100 DEG C, and reduces the water uptake of the membrane.
Inventors:
McGrath, James E.
Hickner, Michael
WAN, Feng
Kim, You Shun
Hickner, Michael
WAN, Feng
Kim, You Shun
Application Number:
JP2002528869A
Publication Date:
March 04, 2009
Filing Date:
September 20, 2001
Export Citation:
Assignee:
Virginia Tech Intellectual Properties, Inc.
International Classes:
C08J5/22; B01D69/14; B01D71/64; B01D71/68; B01D71/82; C08G65/40; C08G73/10; C08G75/23; C08K3/24; C08L81/06; H01B1/06; H01M8/02; H01M8/10
Domestic Patent References:
| JP9245818A | ||||
| JP2001278978A |
Foreign References:
| WO2001001506A1 |
Other References:
F.Wang et al,Synthesis of sulfoneted poly(arylene ether sulfone)s via direct polymerization.,POLYMER PREPRINTS,2000年 3月,Vol.41,No.1,p.237-238
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita