Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications
High cost and low electrochemical stability of the interconnection in Proton Exchange Membrane Fuel Cell (PEMFC) in the presence of H<sub>2</sub>SO<sub>4</sub> are one of the main issues hindering the commercialization of these devices. This manuscript presents the utilizatio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/10/2010 |
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| author | Saman Khosravi H. Rudolf Vallant Lukas Ladenstein Klaus Reichmann |
| author_facet | Saman Khosravi H. Rudolf Vallant Lukas Ladenstein Klaus Reichmann |
| author_sort | Saman Khosravi H. |
| collection | DOAJ |
| description | High cost and low electrochemical stability of the interconnection in Proton Exchange Membrane Fuel Cell (PEMFC) in the presence of H<sub>2</sub>SO<sub>4</sub> are one of the main issues hindering the commercialization of these devices. This manuscript presents the utilization of cost-effective steel in an attempt to minimize the PEMFC interconnection costs with a thin-film solid oxide coating (TFSOC) providing sufficient corrosion resistance for efficient long-term operation. Novel Ti<sub>0.50-y/2</sub>Si<sub>0.50-y/2</sub>Nb<sub>y1,2</sub>O<sub>2</sub> as TFSOC was deposited on the C45E steel as a metal interconnect utilizing a sol–gel process at various annealing temperatures. The analysis of the phase and surface morphology demonstrates that lower annealing temperatures developed nanometric crystallite size of 68 nm, more uniform structure and higher corrosion resistance. Under standard test conditions, the TFSOC demonstrated high polarization resistance (1.3 kΩ cm<sup>2</sup>) even after 720 hours (h). Electrical conductivity of the TFSOC as low as 1.4 × 10<sup>−2</sup> (Ω m)<sup>−1</sup> and activation energy of 0.20 eV were achieved, which helps to maintain the PEMFC output power. |
| first_indexed | 2024-03-10T15:42:23Z |
| format | Article |
| id | doaj.art-694b1ddc47d64d159358e13e3a11af1f |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T15:42:23Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-694b1ddc47d64d159358e13e3a11af1f2023-11-20T16:43:42ZengMDPI AGNanomaterials2079-49912020-10-011010201010.3390/nano10102010Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell ApplicationsSaman Khosravi H.0Rudolf Vallant1Lukas Ladenstein2Klaus Reichmann3Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, 8010 Graz, AustriaInstitute of Materials Science, Joining and Forming, Graz University of Technology, Kopernikusgasse 24/I, 8010 Graz, AustriaInstitute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, 8010 Graz, AustriaInstitute of Materials Science, Joining and Forming, Graz University of Technology, Kopernikusgasse 24/I, 8010 Graz, AustriaHigh cost and low electrochemical stability of the interconnection in Proton Exchange Membrane Fuel Cell (PEMFC) in the presence of H<sub>2</sub>SO<sub>4</sub> are one of the main issues hindering the commercialization of these devices. This manuscript presents the utilization of cost-effective steel in an attempt to minimize the PEMFC interconnection costs with a thin-film solid oxide coating (TFSOC) providing sufficient corrosion resistance for efficient long-term operation. Novel Ti<sub>0.50-y/2</sub>Si<sub>0.50-y/2</sub>Nb<sub>y1,2</sub>O<sub>2</sub> as TFSOC was deposited on the C45E steel as a metal interconnect utilizing a sol–gel process at various annealing temperatures. The analysis of the phase and surface morphology demonstrates that lower annealing temperatures developed nanometric crystallite size of 68 nm, more uniform structure and higher corrosion resistance. Under standard test conditions, the TFSOC demonstrated high polarization resistance (1.3 kΩ cm<sup>2</sup>) even after 720 hours (h). Electrical conductivity of the TFSOC as low as 1.4 × 10<sup>−2</sup> (Ω m)<sup>−1</sup> and activation energy of 0.20 eV were achieved, which helps to maintain the PEMFC output power.https://www.mdpi.com/2079-4991/10/10/2010PEM fuel cellinterconnectthin-filmcorrosion resistancesol–gel method |
| spellingShingle | Saman Khosravi H. Rudolf Vallant Lukas Ladenstein Klaus Reichmann Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications Nanomaterials PEM fuel cell interconnect thin-film corrosion resistance sol–gel method |
| title | Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications |
| title_full | Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications |
| title_fullStr | Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications |
| title_full_unstemmed | Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications |
| title_short | Electrochemical and Structural Property of TiSiNb TFSOC on Affordable Interconnects in Proton Exchange Membrane Fuel Cell Applications |
| title_sort | electrochemical and structural property of tisinb tfsoc on affordable interconnects in proton exchange membrane fuel cell applications |
| topic | PEM fuel cell interconnect thin-film corrosion resistance sol–gel method |
| url | https://www.mdpi.com/2079-4991/10/10/2010 |
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