MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode
Abstract MoS2 has attracted attention as a promising hydrogen evolution reaction (HER) catalyst and a supercapacitor electrode material. However, its catalytic activity and capacitive performance are still hindered by its aggregation and poor intrinsic conductivity. Here, hollow rGO sphere-supported...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-07-01
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| Series: | Nano-Micro Letters |
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| Online Access: | http://link.springer.com/article/10.1007/s40820-018-0215-3 |
| _version_ | 1830489356202147840 |
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| author | Shizheng Zheng Lijun Zheng Zhengyou Zhu Jian Chen Jianli Kang Zhulin Huang Dachi Yang |
| author_facet | Shizheng Zheng Lijun Zheng Zhengyou Zhu Jian Chen Jianli Kang Zhulin Huang Dachi Yang |
| author_sort | Shizheng Zheng |
| collection | DOAJ |
| description | Abstract MoS2 has attracted attention as a promising hydrogen evolution reaction (HER) catalyst and a supercapacitor electrode material. However, its catalytic activity and capacitive performance are still hindered by its aggregation and poor intrinsic conductivity. Here, hollow rGO sphere-supported ultrathin MoS2 nanosheet arrays (h-rGO@MoS2) are constructed via a dual-template approach and employed as bifunctional HER catalyst and supercapacitor electrode material. Because of the expanded interlayer spacing in MoS2 nanosheets and more exposed electroactive S–Mo–S edges, the constructed h-rGO@MoS2 architectures exhibit enhanced HER performance. Furthermore, benefiting from the synergistic effect of the improved conductivity and boosted specific surface areas (144.9 m2 g−1, ca. 4.6-times that of pristine MoS2), the h-rGO@MoS2 architecture shows a high specific capacitance (238 F g−1 at a current density of 0.5 A g−1), excellent rate capacitance, and remarkable cycle stability. Our synthesis method may be extended to construct other vertically aligned hollow architectures, which may serve both as efficient HER catalysts and supercapacitor electrodes. |
| first_indexed | 2024-12-21T19:35:01Z |
| format | Article |
| id | doaj.art-fcd1c9125c214a6d9f1e31973dfe271c |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-12-21T19:35:01Z |
| publishDate | 2018-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-fcd1c9125c214a6d9f1e31973dfe271c2022-12-21T18:52:37ZengSpringerOpenNano-Micro Letters2311-67062150-55512018-07-0110411110.1007/s40820-018-0215-3MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor ElectrodeShizheng Zheng0Lijun Zheng1Zhengyou Zhu2Jian Chen3Jianli Kang4Zhulin Huang5Dachi Yang6Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai UniversityKey Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai UniversityKey Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai UniversityKey Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai UniversitySchool of Material Science and Engineering, Tianjin Polytechnic UniversityKey Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of SciencesKey Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Department of Electronics, College of Electronic Information and Optical Engineering, Nankai UniversityAbstract MoS2 has attracted attention as a promising hydrogen evolution reaction (HER) catalyst and a supercapacitor electrode material. However, its catalytic activity and capacitive performance are still hindered by its aggregation and poor intrinsic conductivity. Here, hollow rGO sphere-supported ultrathin MoS2 nanosheet arrays (h-rGO@MoS2) are constructed via a dual-template approach and employed as bifunctional HER catalyst and supercapacitor electrode material. Because of the expanded interlayer spacing in MoS2 nanosheets and more exposed electroactive S–Mo–S edges, the constructed h-rGO@MoS2 architectures exhibit enhanced HER performance. Furthermore, benefiting from the synergistic effect of the improved conductivity and boosted specific surface areas (144.9 m2 g−1, ca. 4.6-times that of pristine MoS2), the h-rGO@MoS2 architecture shows a high specific capacitance (238 F g−1 at a current density of 0.5 A g−1), excellent rate capacitance, and remarkable cycle stability. Our synthesis method may be extended to construct other vertically aligned hollow architectures, which may serve both as efficient HER catalysts and supercapacitor electrodes.http://link.springer.com/article/10.1007/s40820-018-0215-3MoS2Reduced graphene oxide (rGO)Hollow spheresHydrogen evolution reaction (HER)Supercapacitor |
| spellingShingle | Shizheng Zheng Lijun Zheng Zhengyou Zhu Jian Chen Jianli Kang Zhulin Huang Dachi Yang MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode Nano-Micro Letters MoS2 Reduced graphene oxide (rGO) Hollow spheres Hydrogen evolution reaction (HER) Supercapacitor |
| title | MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode |
| title_full | MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode |
| title_fullStr | MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode |
| title_full_unstemmed | MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode |
| title_short | MoS2 Nanosheet Arrays Rooted on Hollow rGO Spheres as Bifunctional Hydrogen Evolution Catalyst and Supercapacitor Electrode |
| title_sort | mos2 nanosheet arrays rooted on hollow rgo spheres as bifunctional hydrogen evolution catalyst and supercapacitor electrode |
| topic | MoS2 Reduced graphene oxide (rGO) Hollow spheres Hydrogen evolution reaction (HER) Supercapacitor |
| url | http://link.springer.com/article/10.1007/s40820-018-0215-3 |
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