Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells
A nanocomposite polymer membrane based on quaternized poly(vinyl alcohol)/fumed silica (QPVA/FS) was prepared via a quaternization process and solution casting method. The physico-chemical properties of the QPVA/FS membrane were investigated. Its high ionic conductivity was found to depend greatly o...
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2015-12-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/1/15 |
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| author | Selvaraj Rajesh Kumar Cheng-Hsin Juan Guan-Ming Liao Jia-Shiun Lin Chun-Chen Yang Wei-Ting Ma Jiann-Hua You Shingjiang Jessie Lue |
| author_facet | Selvaraj Rajesh Kumar Cheng-Hsin Juan Guan-Ming Liao Jia-Shiun Lin Chun-Chen Yang Wei-Ting Ma Jiann-Hua You Shingjiang Jessie Lue |
| author_sort | Selvaraj Rajesh Kumar |
| collection | DOAJ |
| description | A nanocomposite polymer membrane based on quaternized poly(vinyl alcohol)/fumed silica (QPVA/FS) was prepared via a quaternization process and solution casting method. The physico-chemical properties of the QPVA/FS membrane were investigated. Its high ionic conductivity was found to depend greatly on the concentration of fumed silica in the QPVA matrix. A maximum conductivity of 3.50 × 10−2 S/cm was obtained for QPVA/5%FS at 60 °C when it was doped with 6 M KOH. The permeabilities of methanol and ethanol were reduced with increasing fumed silica content. Cell voltage and peak power density were analyzed as functions of fumed silica concentration, temperature, methanol and ethanol concentrations. A maximum power density of 96.8 mW/cm2 was achieved with QPVA/5%FS electrolyte using 2 M methanol + 6 M KOH as fuel at 80 °C. A peak power density of 79 mW/cm2 was obtained using the QPVA/5%FS electrolyte with 3 M ethanol + 5 M KOH as fuel. The resulting peak power densities are higher than the majority of published reports. The results confirm that QPVA/FS exhibits promise as a future polymeric electrolyte for use in direct alkaline alcoholic fuel cells. |
| first_indexed | 2024-04-11T13:03:21Z |
| format | Article |
| id | doaj.art-fd731a66f73d4108b9b1039670a67008 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:03:21Z |
| publishDate | 2015-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-fd731a66f73d4108b9b1039670a670082022-12-22T04:22:52ZengMDPI AGEnergies1996-10732015-12-01911510.3390/en9010015en9010015Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel CellsSelvaraj Rajesh Kumar0Cheng-Hsin Juan1Guan-Ming Liao2Jia-Shiun Lin3Chun-Chen Yang4Wei-Ting Ma5Jiann-Hua You6Shingjiang Jessie Lue7Department of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical Engineering, Mingchi University of Technology, Tai-shan, New Taipei City 243, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanA nanocomposite polymer membrane based on quaternized poly(vinyl alcohol)/fumed silica (QPVA/FS) was prepared via a quaternization process and solution casting method. The physico-chemical properties of the QPVA/FS membrane were investigated. Its high ionic conductivity was found to depend greatly on the concentration of fumed silica in the QPVA matrix. A maximum conductivity of 3.50 × 10−2 S/cm was obtained for QPVA/5%FS at 60 °C when it was doped with 6 M KOH. The permeabilities of methanol and ethanol were reduced with increasing fumed silica content. Cell voltage and peak power density were analyzed as functions of fumed silica concentration, temperature, methanol and ethanol concentrations. A maximum power density of 96.8 mW/cm2 was achieved with QPVA/5%FS electrolyte using 2 M methanol + 6 M KOH as fuel at 80 °C. A peak power density of 79 mW/cm2 was obtained using the QPVA/5%FS electrolyte with 3 M ethanol + 5 M KOH as fuel. The resulting peak power densities are higher than the majority of published reports. The results confirm that QPVA/FS exhibits promise as a future polymeric electrolyte for use in direct alkaline alcoholic fuel cells.http://www.mdpi.com/1996-1073/9/1/15fumed silicaquaternized poly(vinyl alcohol)ionic conductivitymethanolethanolcell performance |
| spellingShingle | Selvaraj Rajesh Kumar Cheng-Hsin Juan Guan-Ming Liao Jia-Shiun Lin Chun-Chen Yang Wei-Ting Ma Jiann-Hua You Shingjiang Jessie Lue Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells Energies fumed silica quaternized poly(vinyl alcohol) ionic conductivity methanol ethanol cell performance |
| title | Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells |
| title_full | Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells |
| title_fullStr | Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells |
| title_full_unstemmed | Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells |
| title_short | Fumed Silica Nanoparticles Incorporated in Quaternized Poly(Vinyl Alcohol) Nanocomposite Membrane for Enhanced Power Densities in Direct Alcohol Alkaline Fuel Cells |
| title_sort | fumed silica nanoparticles incorporated in quaternized poly vinyl alcohol nanocomposite membrane for enhanced power densities in direct alcohol alkaline fuel cells |
| topic | fumed silica quaternized poly(vinyl alcohol) ionic conductivity methanol ethanol cell performance |
| url | http://www.mdpi.com/1996-1073/9/1/15 |
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