Interface engineering of cobalt–sulfide–selenium core–shell nanostructures as bifunctional electrocatalysts toward overall water splitting
| العنوان: | Interface engineering of cobalt–sulfide–selenium core–shell nanostructures as bifunctional electrocatalysts toward overall water splitting |
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| المؤلفون: | Chucai Guo, Zhengtian Shi, Zhihong Zhu, Jianfa Zhang, Xiangqian Qi, Ken Liu, Wei Xu, Yingchao Song, Zhiyuan Zhang |
| المصدر: | Nanoscale. 13:6890-6901 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, Sulfide, Oxygen evolution, Overpotential, Cobalt sulfide, Catalysis, chemistry.chemical_compound, Chemical engineering, chemistry, Selenide, Water splitting, General Materials Science, Bifunctional |
| الوصف: | The number of active sites and stability of the structure of electrocatalysts are the key factors in the process of overall water splitting. In this paper, cobalt-sulfide-selenium (Se:CoS2-x) core-shell nanostructures are prepared by a simple two-step method, including hydrothermal reaction and chemical vapor deposition. The resulting product exhibits excellent electrochemical performance, owing to the synergistic effects between CoS2 and CoSe1-x, as well as the plentiful active sites in the electrode structure. The Se:CoS2-x material shows a more improved hydrogen evolution reaction activity compared to CoS2 and Co(OH)Cl precursor catalysts, with a low overpotential of only 240 mV achieved at 10 mA cm-2. Meanwhile, Se:CoS2-x as a bifunctional water splitting catalyst also shows remarkably improved oxygen evolution reaction activity, with a low overpotential of only 1.32 V at 10 mA cm-2. The above results show that selenide/sulfide materials provide a new research direction for discovering high-performance and cheap electrode materials. |
| تدمد: | 2040-3372 2040-3364 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::063c6e72c0a24a2cc48ef3ea4dfb1527 https://doi.org/10.1039/d1nr00987g |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....063c6e72c0a24a2cc48ef3ea4dfb1527 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20403372 20403364 |
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