期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 15, 期 4, 页码 1672-1681出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ee03687d
关键词
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资金
- National Key R&D Program of China [2020YFB1505802]
- Ministry of Science and Technology of China [2017YFA0208200, 2016YFA0204100]
- National Natural Science Foundation of China [22025108, 21905188, 51802206]
- Guangdong Provincial Natural Science Fund for Distinguished Young Scholars [2021B1515020081]
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power [2018B030322001]
- Project of Scientific and Technologic Infrastructure of Suzhou [SZS201708]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Xiamen University and Guangzhou Key Laboratory of Low Dimensional Materials and Energy Storage Devices [20195010002]
This study reports a method for synthesizing ultrathin 2D nanosheets without capping agents, which exhibit high stability at high temperature and excellent performance in overall water splitting. It provides a new approach for catalyst design and synthesis in electrocatalysis.
Ultrathin two-dimensional (2D) nanostructures attract increasing attention due to their unique properties and resultant applications in diverse fields, yet the controllable synthesis of ultrathin 2D nanostructures without capping agents remains a challenge. We here report a robust strategy for fabricating 2D Ir-based ultrathin nanosheets (NSs) (1.3 nm) without capping agents through the thermal treatment of ZnIr(OH)(6) perovskite hydroxide. Encouragingly, the created ultrathin Ir-based NSs exhibit high stability against a high temperature (e.g., 300 degrees C) and excellent performance towards overall water splitting. The cell voltages for reaching 10 mA cm(-2) are as low as 1.482 and 1.508 V in alkaline and acidic electrolytes, respectively, which are significantly lower than those of commercial Pt/C||IrOx (1.548 V in alkaline and 1.553 V in acidic electrolytes). This work not only provides a facile strategy for the synthesis of capping agent-free 2D Ir-based NSs, but also promotes the fundamental research studies on catalyst design for electrocatalysis and beyond.
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