A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature
Recently, hydrogen (H<sub>2</sub>) energy has attracted attention among eco-friendly energy sources because H<sub>2</sub> energy is eco-friendly, energy-efficient, and abundant in nature. However, when the concentration of H<sub>2</sub> in the atmosphere is more t...
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MDPI AG
2023-09-01
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| author | U Jin Cho Dongjun Jang Youhyeong Jeon Taeha Kim Beomsu Jo Ryangha Kim Younglae Kim Min-Woo Kwon |
| author_facet | U Jin Cho Dongjun Jang Youhyeong Jeon Taeha Kim Beomsu Jo Ryangha Kim Younglae Kim Min-Woo Kwon |
| author_sort | U Jin Cho |
| collection | DOAJ |
| description | Recently, hydrogen (H<sub>2</sub>) energy has attracted attention among eco-friendly energy sources because H<sub>2</sub> energy is eco-friendly, energy-efficient, and abundant in nature. However, when the concentration of H<sub>2</sub> in the atmosphere is more than 4%, H<sub>2</sub> has a risk of explosion. H<sub>2</sub> is a colorless, tasteless, and odorless gas that is difficult to detect with human senses. Therefore, developing an optimized hydrogen sensor is essential. Palladium (Pd) has good reactivity to hydrogen. Molybdenum disulfide (MoS<sub>2</sub>) has high carrier mobility, sensitive reactivity to toxic gases, and high surface-area-to-volume ratio. Therefore, we proposed hydrogen sensors that use Pd and MoS<sub>2</sub>. The main fabrication processes include MoS<sub>2</sub> deposition through CVD and Pd deposition through DC sputtering. In this study, we utilized Pd and MoS<sub>2</sub> to enable sensing at room temperature. By optimizing the Pd to a nanoparticle structure with an expansive surface area of 4 nm, we achieved a fast response time of 4–5 s and an enhanced yield through a simplified structure. Hydrogen sensors inherently exhibit sensitivity to various environmental factors. To address these challenges, technologies such as machine learning can be incorporated. Emphasizing low-power consumption and various application compatibilities becomes pivotal to promoting commercialization across diverse industries. |
| first_indexed | 2024-03-10T21:49:32Z |
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| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T21:49:32Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-5f9bc3dda2d04de7a352b78312ab53cb2023-11-19T14:01:32ZengMDPI AGApplied Sciences2076-34172023-09-0113191059410.3390/app131910594A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room TemperatureU Jin Cho0Dongjun Jang1Youhyeong Jeon2Taeha Kim3Beomsu Jo4Ryangha Kim5Younglae Kim6Min-Woo Kwon7Department of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaDepartment of Electric Engineering, Gangneung-Wonju National University, Gangneung 25457, Republic of KoreaRecently, hydrogen (H<sub>2</sub>) energy has attracted attention among eco-friendly energy sources because H<sub>2</sub> energy is eco-friendly, energy-efficient, and abundant in nature. However, when the concentration of H<sub>2</sub> in the atmosphere is more than 4%, H<sub>2</sub> has a risk of explosion. H<sub>2</sub> is a colorless, tasteless, and odorless gas that is difficult to detect with human senses. Therefore, developing an optimized hydrogen sensor is essential. Palladium (Pd) has good reactivity to hydrogen. Molybdenum disulfide (MoS<sub>2</sub>) has high carrier mobility, sensitive reactivity to toxic gases, and high surface-area-to-volume ratio. Therefore, we proposed hydrogen sensors that use Pd and MoS<sub>2</sub>. The main fabrication processes include MoS<sub>2</sub> deposition through CVD and Pd deposition through DC sputtering. In this study, we utilized Pd and MoS<sub>2</sub> to enable sensing at room temperature. By optimizing the Pd to a nanoparticle structure with an expansive surface area of 4 nm, we achieved a fast response time of 4–5 s and an enhanced yield through a simplified structure. Hydrogen sensors inherently exhibit sensitivity to various environmental factors. To address these challenges, technologies such as machine learning can be incorporated. Emphasizing low-power consumption and various application compatibilities becomes pivotal to promoting commercialization across diverse industries.https://www.mdpi.com/2076-3417/13/19/10594hydrogenpalladiummolybdenum disulfidehydrogen sensorroom temperature |
| spellingShingle | U Jin Cho Dongjun Jang Youhyeong Jeon Taeha Kim Beomsu Jo Ryangha Kim Younglae Kim Min-Woo Kwon A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature Applied Sciences hydrogen palladium molybdenum disulfide hydrogen sensor room temperature |
| title | A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature |
| title_full | A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature |
| title_fullStr | A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature |
| title_full_unstemmed | A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature |
| title_short | A Palladium-Deposited Molybdenum Disulfide-Based Hydrogen Sensor at Room Temperature |
| title_sort | palladium deposited molybdenum disulfide based hydrogen sensor at room temperature |
| topic | hydrogen palladium molybdenum disulfide hydrogen sensor room temperature |
| url | https://www.mdpi.com/2076-3417/13/19/10594 |
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