Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification
Among the various film preparation methods, electroplating is one of the simplest and most economical methods. However, it is challenging to collect a dense single Pd film through plating, owing to the accumulation of stress in the film during the process. Therefore, the characteristics of a single...
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MDPI AG
2023-03-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/11/3/111 |
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| author | Naruki Endo Yumi Kaneko Norikazu Dezawa Yasuhiro Komo Masanobu Higuchi |
| author_facet | Naruki Endo Yumi Kaneko Norikazu Dezawa Yasuhiro Komo Masanobu Higuchi |
| author_sort | Naruki Endo |
| collection | DOAJ |
| description | Among the various film preparation methods, electroplating is one of the simplest and most economical methods. However, it is challenging to collect a dense single Pd film through plating, owing to the accumulation of stress in the film during the process. Therefore, the characteristics of a single plated film have not been clearly identified, although pure Pd is widely used in metallic-hydrogen-purification membranes. In this study, stress concentration in film during preparation was reduced by optimizing the plating process, and a dense single flat film was successfully collected. No impurities were detected. Thus, a high-purity Pd film was prepared. Its surface texture was found to be significantly different from that of the rolled film, and several approximately 5 μm sized aggregates were observed on the surface. The plated film is reported to have mechanical properties superior to those of the rolled film, with twice the displacement and four times the breaking point strength. The hydrogen permeabilities of the plated film (5.4 × 10<sup>−9</sup>–1.1 × 10<sup>−8</sup> mol·m<sup>−1</sup>·s<sup>−1</sup>·Pa<sup>−1/2</sup> at 250–450 °C) were comparable to those of the rolled and reported films, indicating that the surface texture does not have a strong effect on hydrogen permeability. The results of this study promote the practical use of Pd-based membranes through electroplating. |
| first_indexed | 2024-03-11T06:23:06Z |
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| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-11T06:23:06Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-7a8eff564eee49178b48d0c9518cb9e02023-11-17T11:45:09ZengMDPI AGInorganics2304-67402023-03-0111311110.3390/inorganics11030111Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen PurificationNaruki Endo0Yumi Kaneko1Norikazu Dezawa2Yasuhiro Komo3Masanobu Higuchi4Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 2-2-9 Machiikedai, Koriyama 963-0298, JapanSanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, JapanSanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, JapanSanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, JapanSanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, JapanAmong the various film preparation methods, electroplating is one of the simplest and most economical methods. However, it is challenging to collect a dense single Pd film through plating, owing to the accumulation of stress in the film during the process. Therefore, the characteristics of a single plated film have not been clearly identified, although pure Pd is widely used in metallic-hydrogen-purification membranes. In this study, stress concentration in film during preparation was reduced by optimizing the plating process, and a dense single flat film was successfully collected. No impurities were detected. Thus, a high-purity Pd film was prepared. Its surface texture was found to be significantly different from that of the rolled film, and several approximately 5 μm sized aggregates were observed on the surface. The plated film is reported to have mechanical properties superior to those of the rolled film, with twice the displacement and four times the breaking point strength. The hydrogen permeabilities of the plated film (5.4 × 10<sup>−9</sup>–1.1 × 10<sup>−8</sup> mol·m<sup>−1</sup>·s<sup>−1</sup>·Pa<sup>−1/2</sup> at 250–450 °C) were comparable to those of the rolled and reported films, indicating that the surface texture does not have a strong effect on hydrogen permeability. The results of this study promote the practical use of Pd-based membranes through electroplating.https://www.mdpi.com/2304-6740/11/3/111palladiumPd-based membraneelectroplatinghydrogen purification |
| spellingShingle | Naruki Endo Yumi Kaneko Norikazu Dezawa Yasuhiro Komo Masanobu Higuchi Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification Inorganics palladium Pd-based membrane electroplating hydrogen purification |
| title | Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification |
| title_full | Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification |
| title_fullStr | Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification |
| title_full_unstemmed | Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification |
| title_short | Collectable Single Pure-Pd Metal Membrane with High Strength and Flexibility Prepared through Electroplating for Hydrogen Purification |
| title_sort | collectable single pure pd metal membrane with high strength and flexibility prepared through electroplating for hydrogen purification |
| topic | palladium Pd-based membrane electroplating hydrogen purification |
| url | https://www.mdpi.com/2304-6740/11/3/111 |
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