Positronium Formation in Aromatic Polymer Electrolytes for Fuel Cells

被引：36
作者：
Kobayashi, Y. [1 ]
Mohamed, Hamdy F. M. [2 ]
Ohira, A. [2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, NMIJ, Tsukuba, Ibaraki 3058565, Japan
[2] Natl Inst Adv Ind Sci & Technol, FC Cub, Tokyo 1350064, Japan
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2009年 / 113卷 / 17期
关键词：
RANDOM STATISTICAL COPOLYMERS; FREE-VOLUME; OXYGEN PERMEABILITY; ELECTRIC-FIELD; ANNIHILATION; EXCHANGE; SULFONE); TEMPERATURE; DIFFUSIVITY; NAFION;
D O I：
10.1021/jp901471m
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We measured the yield of positronium (Ps) in sulfonated aromatic proton conducting membranes for the polymer electrolyte fuel cell (PEFC) with and without -SO2- in their chemical structures by positron annihilation lifetime spectroscopy (PALS). It was observed that Ps formation is almost totally inhibited in the polymers without -SO2- Such as sulfonated poly(ether ether ketone) (SPEEK). On the other hand Ps favorably forms in those with -SO2- as sulfonated polyether sulfone (SPES), which is due to the anti-inhibition effect of -SO2-. The high probability of Ps formation in these polymers enables the study of the free volume and the mechanism of gas permeation by PALS.
引用
收藏
页码：5698 / 5701
页数：4
相关论文
共 38 条
  • [1] [Anonymous], 2003, HDB FUEL CELLS FUNDA
  • [2] MOLECULAR TRANSPORT IN LIQUIDS AND GLASSES
    COHEN, MH
    TURNBULL, D
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1959, 31 (05) : 1164 - 1169
  • [3] Memoir on the decomposition of water and of the bodies that it holds in solution by means of galvanic electricity
    de Grotthuss, C. J. T.
    [J]. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, 2006, 1757 (08): : 871 - 875
  • [4] THE TEMPERATURE-DEPENDENCE OF POSITRON LIFETIMES IN SOLID PIVALIC ACID
    ELDRUP, M
    LIGHTBODY, D
    SHERWOOD, JN
    [J]. CHEMICAL PHYSICS, 1981, 63 (1-2) : 51 - 58
  • [5] Fujita H., 1961, Adv Polym Sci, V3, P1, DOI DOI 10.1007/BFB0050514
  • [6] Synthesis of poly(arylene ether ether ketone ketone) copolymers containing pendant sulfonic acid groups bonded to naphthalene as proton exchange membrane materials
    Gao, Y
    Robertson, GP
    Guiver, MD
    Mikhailenko, SD
    Li, X
    Kaliaguine, S
    [J]. MACROMOLECULES, 2004, 37 (18) : 6748 - 6754
  • [7] Effect of halogenated compounds on positronium formation in polycarbonate and polysulfone matrices
    Hirata, K
    Kobayashi, Y
    Ujihira, Y
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1997, 93 (01): : 139 - 142
  • [8] Diffusion coefficients of positronium in amorphous polymers
    Hirata, K
    Kobayashi, Y
    Ujihira, Y
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (06): : 985 - 988
  • [9] Interlaboratory comparison of positron annihilation lifetime measurements for synthetic fused silica and polycarbonate
    Ito, Kenji
    Oka, Toshitaka
    Kobayashi, Yoshinori
    Shirai, Yasuharu
    Wada, Ken'ichiro
    Matsumoto, Masataka
    Fujinami, Masanori
    Hirade, Tetsuya
    Honda, Yoshihide
    Hosomi, Hiroyuki
    Nagai, Yasuyoshi
    Inoue, Koji
    Saito, Haruo
    Sakaki, Koji
    Sato, Kiminori
    Shimazu, Akira
    Uedono, Akira
    [J]. JOURNAL OF APPLIED PHYSICS, 2008, 104 (02)
  • [10] Sulfonated poly(ether sulfone) for universal polymer electrolyte fuel cell operations
    Kim, Hyoung-Juhn
    Krishnan, Nambi N.
    Lee, Sang-Yeop
    Hwang, Sang Youp
    Kim, Daejin
    Jeong, Kyoung Jin
    Lee, Jae Kwang
    Cho, EunAe
    Lee, Jaeyoung
    Han, Jonghee
    Ha, Heung Yong
    Lim, Tae-Hoon
    [J]. JOURNAL OF POWER SOURCES, 2006, 160 (01) : 353 - 358
1234