Degradation of perfluorinated sulfonic acid films: An in-situ infrared spectro-electrochemical study

被引:24
|
作者
Fang, Xiang [1 ]
Shen, Pei Kang [1 ]
Song, Shuqin [1 ]
Stergiopoulos, Vaios [2 ]
Tsiakaras, Panagiotis [2 ]
机构
[1] Sun Yat Sen Univ, Sch Phys & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
[2] Univ Thessaly, Sch Engn, Dept Mech Engn, Volos 38334, Greece
关键词
Polymer electrolyte membrane fuel cells; Perfluorinated sulfonic acid; In-situ Fourier transform infrared spectro-electrochemistry; Membrane degradation; PROTON-EXCHANGE MEMBRANE; PEM FUEL-CELLS; CHEMICAL DEGRADATION; FTIR SPECTROSCOPY; HYDROGEN-PEROXIDE; MECHANISM; ETHANOL; ELECTROOXIDATION; DECOMPOSITION; ELECTROLYTE;
D O I
10.1016/j.polymdegradstab.2009.06.015
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The in-situ Fourier transform infrared (FTIR) spectro-electrochemical method was used to evaluate the degradation mechanism of perfluorinated sulfonic acid (PFSA) polymer for the first time. The effect of H2O2 concentration in Fenton's reagent on the PFSA film degradation was studied. It was found that the effect of the H2O2 concentration on the chemical degradation of the PFSA film was limited, whereas, the electrochemical degradation was obviously enhanced at higher H2O2 concentrations. The chemical degradation of PFSA film in Fenton's reagent was similar to that in pure H2O2 solution. However, the results indicated that the electrode potential is the dominating factor affecting the degradation of the PFSA film. It is clear that the electrochemical degradation of PFSA film in Fenton's reagent is more serious than that in pure H2O2 solution. Moreover, it is indicated that the main cause of the membrane degradation is the instability of the backbone of the polymer chain under electrochemical conditions and secondarily the loss of sulfuric groups in the side-chains. It is concluded that the in-situ FTIR spectro-electrochemical method could be used to evaluate more objectively the degradation of the polymer film. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1707 / 1713
页数:7
相关论文
共 50 条
  • [31] Fuel Cell Perfluorinated Sulfonic Acid Membrane Degradation Correlating Accelerated Stress Testing and Lifetime
    Rodgers, Marianne P.
    Bonville, Leonard J.
    Kunz, H. Russell
    Slattery, Darlene K.
    Fenton, James M.
    CHEMICAL REVIEWS, 2012, 112 (11) : 6075 - 6103
  • [32] In-situ Study the Corrosion Degradation Mechanism of Tinplate in Salty Water by Scanning Electrochemical Microscopy
    Ma, Chao
    Zhou, Bing
    Xia, Da-Hai
    Gao, Zhi-Ming
    Wang, Jian-Qiu
    Zhang, Zhi-Ming
    Behnamian, Yashar
    Hu, Wen-Bin
    RUSSIAN JOURNAL OF ELECTROCHEMISTRY, 2018, 54 (02) : 216 - 223
  • [33] In-situ Study the Corrosion Degradation Mechanism of Tinplate in Salty Water by Scanning Electrochemical Microscopy
    Chao Ma
    Bing Zhou
    Da-Hai Xia
    Zhi-Ming Gao
    Jian-Qiu Wang
    Zhi-Ming Zhang
    Yashar Behnamian
    Wen-Bin Hu
    Russian Journal of Electrochemistry, 2018, 54 : 216 - 223
  • [34] INFRARED REFLECTANCE ABSORPTION-SPECTROSCOPY (IRRAS) STUDY OF THE THERMAL-STABILITY OF PERFLUORINATED SULFONIC-ACID IONOMERS ON PT
    CHU, D
    GERVASIO, D
    RAZAQ, M
    YEAGER, EB
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1988, 135 (03) : C120 - C120
  • [35] INFRARED REFLECTANCE ABSORPTION-SPECTROSCOPY (IRRAS) - STUDY OF THE THERMAL-STABILITY OF PERFLUORINATED SULFONIC-ACID IONOMERS ON PT
    CHU, D
    GERVASIO, D
    RAZAQ, M
    YEAGER, EB
    JOURNAL OF APPLIED ELECTROCHEMISTRY, 1990, 20 (01) : 157 - 162
  • [36] In-Situ Infrared Spectroscopic Studies of Electrochemical Energy Conversion and Storage
    Li, Jun-Tao
    Zhou, Zhi-You
    Broadwell, Ian
    Sun, Shi-Gang
    ACCOUNTS OF CHEMICAL RESEARCH, 2012, 45 (04) : 485 - 494
  • [37] IN-SITU INFRARED CHARACTERIZATION OF THE ELECTROCHEMICAL DISSOLUTION OF SILICON IN A FLUORIDE ELECTROLYTE
    OZANAM, F
    CHAZALVIEL, JN
    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1993, 64-5 : 395 - 402
  • [38] Evaluating Zn ferrite (ZnxFe3-xO4; 0 ≤ x ≤ 1) for alkaline water oxidation: electrochemical and spectro-electrochemical study
    Soni, Amisha
    Maurya, Sarvatej Kumar
    Malviya, Manisha
    Lal, B.
    Tiwary, Dhanesh
    JOURNAL OF APPLIED ELECTROCHEMISTRY, 2025, 55 (01) : 147 - 161
  • [39] In situ surface-enhanced Raman scattering spectro-electrochemical observation of 2-mercaptopyridine self-assembled monolayer on zinc electrode
    Ji Jia-Hua
    Yang Hai-Feng
    Ma Xiao-Ling
    Sun Yi-Ping
    Zhu Xuan
    Song Wei
    Duan Guo-Ping
    ACTA CHIMICA SINICA, 2008, 66 (11) : 1333 - 1336
  • [40] Highly Permeable Perfluorinated Sulfonic Acid Ionomers for Improved Electrochemical Devices: Insights into Structure-Property Relationships
    Katzenberg, Adlai
    Chowdhury, Anamika
    Fang, Minfeng
    Weber, Adam Z.
    Okamoto, Yoshiyuki
    Kusoglu, Ahmet
    Modestino, Miguel A.
    Journal of the American Chemical Society, 2020, 142 (08): : 3742 - 3752