Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte
This work aims to clarify the effect of magnetic graphene oxide (GO) reorientation in a polymer matrix on the ionic conduction and methanol barrier properties of nanocomposite membrane electrolytes. Magnetic iron oxide (Fe3O4) nanoparticles were prepared and dispersed on GO nanosheets (GO-Fe3O4). Th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-11-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/12/1003 |
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| author | Jia-Shuin Lin Wei-Ting Ma Chao-Ming Shih Bor-Chern Yu Li-Wei Teng Yi-Chun Wang Kong-Wei Cheng Fang-Chyou Chiu Shingjiang Jessie Lue |
| author_facet | Jia-Shuin Lin Wei-Ting Ma Chao-Ming Shih Bor-Chern Yu Li-Wei Teng Yi-Chun Wang Kong-Wei Cheng Fang-Chyou Chiu Shingjiang Jessie Lue |
| author_sort | Jia-Shuin Lin |
| collection | DOAJ |
| description | This work aims to clarify the effect of magnetic graphene oxide (GO) reorientation in a polymer matrix on the ionic conduction and methanol barrier properties of nanocomposite membrane electrolytes. Magnetic iron oxide (Fe3O4) nanoparticles were prepared and dispersed on GO nanosheets (GO-Fe3O4). The magnetic GO-Fe3O4 was imbedded into a quaternized polyvinyl alcohol (QPVA) matrix and crosslinked (CL-) with glutaraldehyde (GA) to obtain a polymeric nanocomposite. A magnetic field was applied in the through-plane direction during the drying and film formation steps. The CL-QPVA/GO-Fe3O4 nanocomposite membranes were doped with an alkali to obtain hydroxide-conducting electrolytes for direct methanol alkaline fuel cell (DMAFC) applications. The magnetic field-reoriented CL-QPVA/GO-Fe3O4 electrolyte demonstrated higher conductivity and lower methanol permeability than the unoriented CL-QPVA/GO-Fe3O4 membrane or the CL-QPVA film. The reoriented CL-QPVA/GO-Fe3O4 nanocomposite was used as the electrolyte in a DMAFC and resulted in a maximum power density of 55.4 mW·cm−2 at 60 °C, which is 73.7% higher than that of the composite without the magnetic field treatment (31.9 mW·cm−2). In contrast, the DMAFC using the CL-QPVA electrolyte generated only 22.4 mW·cm−2. This research proved the surprising benefits of magnetic-field-assisted orientation of GO-Fe3O4 in facilitating the ion conduction of a polymeric electrolyte. |
| first_indexed | 2024-04-11T13:23:54Z |
| format | Article |
| id | doaj.art-c8075938e8804bdcbefafe013349bcc0 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:23:54Z |
| publishDate | 2016-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c8075938e8804bdcbefafe013349bcc02022-12-22T04:22:07ZengMDPI AGEnergies1996-10732016-11-01912100310.3390/en9121003en9121003Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid ElectrolyteJia-Shuin Lin0Wei-Ting Ma1Chao-Ming Shih2Bor-Chern Yu3Li-Wei Teng4Yi-Chun Wang5Kong-Wei Cheng6Fang-Chyou Chiu7Shingjiang Jessie Lue8Department of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanDepartment of Chemical and Materials Engineering, and Green Technology Research Center, Chang Gung University, Kwei-shan, Taoyuan 333, TaiwanThis work aims to clarify the effect of magnetic graphene oxide (GO) reorientation in a polymer matrix on the ionic conduction and methanol barrier properties of nanocomposite membrane electrolytes. Magnetic iron oxide (Fe3O4) nanoparticles were prepared and dispersed on GO nanosheets (GO-Fe3O4). The magnetic GO-Fe3O4 was imbedded into a quaternized polyvinyl alcohol (QPVA) matrix and crosslinked (CL-) with glutaraldehyde (GA) to obtain a polymeric nanocomposite. A magnetic field was applied in the through-plane direction during the drying and film formation steps. The CL-QPVA/GO-Fe3O4 nanocomposite membranes were doped with an alkali to obtain hydroxide-conducting electrolytes for direct methanol alkaline fuel cell (DMAFC) applications. The magnetic field-reoriented CL-QPVA/GO-Fe3O4 electrolyte demonstrated higher conductivity and lower methanol permeability than the unoriented CL-QPVA/GO-Fe3O4 membrane or the CL-QPVA film. The reoriented CL-QPVA/GO-Fe3O4 nanocomposite was used as the electrolyte in a DMAFC and resulted in a maximum power density of 55.4 mW·cm−2 at 60 °C, which is 73.7% higher than that of the composite without the magnetic field treatment (31.9 mW·cm−2). In contrast, the DMAFC using the CL-QPVA electrolyte generated only 22.4 mW·cm−2. This research proved the surprising benefits of magnetic-field-assisted orientation of GO-Fe3O4 in facilitating the ion conduction of a polymeric electrolyte.http://www.mdpi.com/1996-1073/9/12/1003graphene oxide-iron oxide (GO-Fe3O4)crosslinked quaternized polyvinyl alcohol (CL-QPVA)magnetic fieldreorientationdirect methanol alkaline fuel cell (DMAFC) |
| spellingShingle | Jia-Shuin Lin Wei-Ting Ma Chao-Ming Shih Bor-Chern Yu Li-Wei Teng Yi-Chun Wang Kong-Wei Cheng Fang-Chyou Chiu Shingjiang Jessie Lue Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte Energies graphene oxide-iron oxide (GO-Fe3O4) crosslinked quaternized polyvinyl alcohol (CL-QPVA) magnetic field reorientation direct methanol alkaline fuel cell (DMAFC) |
| title | Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte |
| title_full | Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte |
| title_fullStr | Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte |
| title_full_unstemmed | Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte |
| title_short | Reorientation of Magnetic Graphene Oxide Nanosheets in Crosslinked Quaternized Polyvinyl Alcohol as Effective Solid Electrolyte |
| title_sort | reorientation of magnetic graphene oxide nanosheets in crosslinked quaternized polyvinyl alcohol as effective solid electrolyte |
| topic | graphene oxide-iron oxide (GO-Fe3O4) crosslinked quaternized polyvinyl alcohol (CL-QPVA) magnetic field reorientation direct methanol alkaline fuel cell (DMAFC) |
| url | http://www.mdpi.com/1996-1073/9/12/1003 |
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