Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting
Herein, this work elucidates the synthesis of the Pd-MoS<sub>2</sub> catalyst for application in methanol-mediated overall water splitting. The scanning electron microscope (SEM) and transmission electron microscope (TEM) pictures offer an exciting nanostructured shape of the Pd-MoS<s...
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MDPI AG
2025-01-01
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| Series: | Inorganics |
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| author | Aviraj M. Teli Sagar M. Mane Rajneesh Kumar Mishra Wookhee Jeon Jae Cheol Shin |
| author_facet | Aviraj M. Teli Sagar M. Mane Rajneesh Kumar Mishra Wookhee Jeon Jae Cheol Shin |
| author_sort | Aviraj M. Teli |
| collection | DOAJ |
| description | Herein, this work elucidates the synthesis of the Pd-MoS<sub>2</sub> catalyst for application in methanol-mediated overall water splitting. The scanning electron microscope (SEM) and transmission electron microscope (TEM) pictures offer an exciting nanostructured shape of the Pd-MoS<sub>2</sub>, depicting a high surface area. Further, high-resolution TEM (HRTEM) pictures confirm the lattice plane (100), lattice spacing (0.26 nm), and hexagonal crystal structure of the Pd-MoS<sub>2</sub>. Moreover, high-angle annular dark-field (HAADF) images and related color maps disclose the Mo, S, and Pd elements of the Pd-MoS<sub>2</sub>. The Pd-MoS<sub>2</sub> catalyst exhibits lower overpotentials of 224.6 mV [methanol-mediated hydrogen evolution reaction (MM-HER)] at −10 mA cm<sup>−2</sup> and 133 mV [methanol-mediated oxygen evolution reaction (MM-OER)] at 10 mA cm<sup>−2</sup>. Further, the Pd-MoS<sub>2</sub> illustrates noteworthy stability for 15.5 h for MM-HER and 18 h for MM-OER by chronopotentiometry test. Excitingly, the Pd-MoS<sub>2</sub>∥Pd-MoS<sub>2</sub> cell reveals a small potential of 1.581 V compared to the MoS<sub>2</sub>∥MoS<sub>2</sub> cell (1.648 V) in methanol-mediated overall water splitting. In addition, the Pd-MoS<sub>2</sub>∥Pd-MoS<sub>2</sub> combination reveals brilliant durability over 18 h at 10 mA cm<sup>−2</sup>. |
| format | Article |
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| institution | Kabale University |
| issn | 2304-6740 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Inorganics |
| spelling | doaj-art-b7be7e8dc8e94caeb99eddf4942da4b32025-01-24T13:35:30ZengMDPI AGInorganics2304-67402025-01-011312110.3390/inorganics13010021Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water SplittingAviraj M. Teli0Sagar M. Mane1Rajneesh Kumar Mishra2Wookhee Jeon3Jae Cheol Shin4Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of KoreaDepartment of Fiber System Engineering, Yeungnam University, 280 Dehak-Ro, Gyeongsan 38541, Gyeongbuk, Republic of KoreaDepartment of Physics, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Republic of KoreaDepartment of Semiconductor, Convergence Engineering, Sungkyunkwan University, Suwon 16419, Gyeonggi, Republic of KoreaDivision of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of KoreaHerein, this work elucidates the synthesis of the Pd-MoS<sub>2</sub> catalyst for application in methanol-mediated overall water splitting. The scanning electron microscope (SEM) and transmission electron microscope (TEM) pictures offer an exciting nanostructured shape of the Pd-MoS<sub>2</sub>, depicting a high surface area. Further, high-resolution TEM (HRTEM) pictures confirm the lattice plane (100), lattice spacing (0.26 nm), and hexagonal crystal structure of the Pd-MoS<sub>2</sub>. Moreover, high-angle annular dark-field (HAADF) images and related color maps disclose the Mo, S, and Pd elements of the Pd-MoS<sub>2</sub>. The Pd-MoS<sub>2</sub> catalyst exhibits lower overpotentials of 224.6 mV [methanol-mediated hydrogen evolution reaction (MM-HER)] at −10 mA cm<sup>−2</sup> and 133 mV [methanol-mediated oxygen evolution reaction (MM-OER)] at 10 mA cm<sup>−2</sup>. Further, the Pd-MoS<sub>2</sub> illustrates noteworthy stability for 15.5 h for MM-HER and 18 h for MM-OER by chronopotentiometry test. Excitingly, the Pd-MoS<sub>2</sub>∥Pd-MoS<sub>2</sub> cell reveals a small potential of 1.581 V compared to the MoS<sub>2</sub>∥MoS<sub>2</sub> cell (1.648 V) in methanol-mediated overall water splitting. In addition, the Pd-MoS<sub>2</sub>∥Pd-MoS<sub>2</sub> combination reveals brilliant durability over 18 h at 10 mA cm<sup>−2</sup>.https://www.mdpi.com/2304-6740/13/1/21Pd-MoS<sub>2</sub>methanol-mediated hydrogen evolution reactionmethanol-mediated oxygen evolution reaction (MM-OER)methanol-mediated overall water splittingoutstanding stability |
| spellingShingle | Aviraj M. Teli Sagar M. Mane Rajneesh Kumar Mishra Wookhee Jeon Jae Cheol Shin Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting Inorganics Pd-MoS<sub>2</sub> methanol-mediated hydrogen evolution reaction methanol-mediated oxygen evolution reaction (MM-OER) methanol-mediated overall water splitting outstanding stability |
| title | Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting |
| title_full | Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting |
| title_fullStr | Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting |
| title_full_unstemmed | Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting |
| title_short | Unveiling the Electrocatalytic Performances of the Pd-MoS<sub>2</sub> Catalyst for Methanol-Mediated Overall Water Splitting |
| title_sort | unveiling the electrocatalytic performances of the pd mos sub 2 sub catalyst for methanol mediated overall water splitting |
| topic | Pd-MoS<sub>2</sub> methanol-mediated hydrogen evolution reaction methanol-mediated oxygen evolution reaction (MM-OER) methanol-mediated overall water splitting outstanding stability |
| url | https://www.mdpi.com/2304-6740/13/1/21 |
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