期刊
ADVANCED MATERIALS
卷 30, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201705538
关键词
electronic regulation; hydrogen evolution reaction; nanosheets; oxygen evolution reaction; water splitting
类别
资金
- National Key R&D Program of China [2016YFB0600901]
- National Natural Science Foundation of China [U1463205, 21525626, 21606169]
- Program of Introducing Talents of Discipline to Universities [B06006]
The exploration of highly efficient electrocatalysts for both oxygen and hydrogen generation via water splitting is receiving considerable attention in recent decades. Up till now, Pt-based catalysts still exhibit the best hydrogen evolution reaction (HER) performance and Ir/Ru-based oxides are identified as the benchmark for oxygen evolution reaction (OER). However, the high cost and rarity of these materials extremely hinder their large-scale applications. This paper describes the construction of the ultrathin defect-enriched 3D Se-(NiCo)S-x/(OH)(x) nanosheets for overall water splitting through a facile Se-induced hydrothermal treatment. Via Se-induced fabrication, highly efficient Se-(NiCo)S-x/(OH)(x) nanosheets are successfully fabricated through morphology optimization, defect engineering, and electronic structure tailoring. The as-prepared hybrids exhibit relatively low overpotentials of 155 and 103 mV at the current density of 10 mA cm(-2) for OER and HER, respectively. Moreover, an overall water-splitting device delivers a current density of 10 mA cm(-2) for approximate to 66 h without obvious degradation.
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