Polymer blends based on sulfonated poly(ether ketone ketone) and poly(ether sulfone) as proton exchange membranes for fuel cells

被引:79
作者
Swier, S [1 ]
Ramani, V
Fenton, JM
Kunz, HR
Shaw, MT
Weiss, RA
机构
[1] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Chem Engn, Storrs, CT 06269 USA
关键词
poly(ether ketone ketone); poly(ether sulfone); polymer blend; proton-exchange membrane;
D O I
10.1016/j.memsci.2005.02.013
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The importance of the blend microstructure and its effect on conductivity and structural integrity of proton exchange membranes (PEM) were investigated. Sulfonated poly(ether ketone ketone) (SPEKK) was selected as the proton-conducting component in a blend with either poly(ether sulfone) (PES) or SPEKK with a different sulfonation level. The second component was added to improve the mechanical stability in the fuel cell environment. Membranes were cast from solution using N-methyl-2-pyrrolidone (NMP) and dimethylacetamide (DMAc). Special attention was paid to the ternary solution behavior. Solution cast SPEKK/PES membranes are homogeneous for all studied compositions, 8/2 through 515 (w/w), and sulfonation levels, 1.7-3.5 mequiv./g. Although this polymer pair does not show evidence for intrinsic compatibility, the excellent solvent quality results in a frozen-in structure during solution casting. The morphology of SPEKK/SPEKK blends can be tailor-made by finding the right balance between composition, casting solvent and temperature. Co-continuous morphologies can be devised for an SPEKK blend with sulfonation levels of 1.2 and 2 mequiv./g. Both blends show lower swelling than the parent SPEKK. This results in better stability of PEMs during fuel cell testing. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:122 / 133
页数:12
相关论文
共 42 条
[21]   On the complexity of proton conduction phenomena [J].
Kreuer, KD .
SOLID STATE IONICS, 2000, 136 :149-160
[22]   Sulfonated poly(ether ether ketone) membranes for direct methanol fuel cell [J].
Li, L ;
Zhang, J ;
Wang, YX .
JOURNAL OF MEMBRANE SCIENCE, 2003, 226 (1-2) :159-167
[23]   DEVELOPMENT OF SOLID POLYMER ELECTROLYTES FOR WATER ELECTROLYSIS AT INTERMEDIATE TEMPERATURES [J].
LINKOUS, CA .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 1993, 18 (08) :641-646
[24]   New polymeric electrolyte membranes based on proton donor-proton acceptor properties for direct methanol fuel cells [J].
Manea, C ;
Mulder, M .
DESALINATION, 2002, 147 (1-3) :179-182
[25]   Characterization of polymer blends of polyethersulfone/sulfonated polysulfone and polyethersulfone/sulfonated polyetheretherketone for direct methanol fuel cell applications [J].
Manea, C ;
Mulder, M .
JOURNAL OF MEMBRANE SCIENCE, 2002, 206 (1-2) :443-453
[26]  
Mikhailenko SD, 2000, J POLYM SCI POL PHYS, V38, P1386, DOI 10.1002/(SICI)1099-0488(20000515)38:10<1386::AID-POLB160>3.3.CO
[27]  
2-W
[28]  
RAMANI V, IN PRESS ELECTROCHIM
[29]   Proton-conducting polymer electrolyte membranes based on hydrocarbon polymers [J].
Rikukawa, M ;
Sanui, K .
PROGRESS IN POLYMER SCIENCE, 2000, 25 (10) :1463-1502
[30]   Emerging membranes for electrochemical systems - Part II. High temperature composite membranes for polymer electrolyte fuel cell (PEFC) applications [J].
Savadogo, O .
JOURNAL OF POWER SOURCES, 2004, 127 (1-2) :135-161