کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147507 | 1497359 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced performance of DMFC prepared by 10Cu/CeO2 catalyst and nanocomposite SPVA membranes with layer-by-layer coating of polyacrylic acid and chitosan
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present study, TiO2 nanoparticles are used as inorganic nanofiller material to prepare nanocomposite proton exchange membrane (PEM). Sulfonated polyvinyl alcohol (SPVA) is synthesized by 4-formylbenzene-1,3-disulfonic acid disodium salt hydrate and water. The cross-linking reaction is performed by glutaraldehyde. These membranes were then dip coated with polyacrylic acid and chitosan alternately and one layer-by-layer (LBL), two LBL and three LBL membranes were prepared. The chemical structure evaluation of SPVA membrane is performed using FTIR. The direct methanol fuel cell (DMFC) catalysts of 10Cu/CeO2 and 10Â Pt-10Â CeO2/C were prepared by reduction reaction and hydrothermal technique. Thus obtained material was spin coated on 2Â ÃÂ 2Â cm2 carbon paper to prepare catalyst anode/cathode. The morphology, size, and purity of catalyst particles are analysed by SEM, UV-visible spectroscopy, FTIR and EDS. Electrochemical analysis is also done to test the performance. Results show that Cu/CeO2 catalyst shows excellent catalysis towards methanol oxidation, which is better than 10Â Pt-10Â CeO2/C particles. The 10Cu/CeO2 catalyst gives peak voltage of 915Â mV for infinite resistance, which is higher than the reported value of the conventional 20Â Pt/C catalyst (810Â mV).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 18, 4 May 2017, Pages 13198-13208
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 18, 4 May 2017, Pages 13198-13208
نویسندگان
Jignasa N. Solanki, Preeti S. Mishra, Z.V.P. Murthy,