Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 10, Pages 7918-7925Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am501256x
Keywords
carbon quantum dots; NiFe-LDH complex; enchanced OER; chronopotentiometry; stability
Funding
- National Basic Research Program of China (973 Program) [2012CB825800, 2013CB932702]
- National Natural Science Foundation of China [51132006, 21073127, 21071104]
- Specialized Research Fund for the Doctoral Program of Higher Education [20123201110018]
- Suzhou Planning Project of Science and Technology [ZXG2012028]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [200929]
- Priority Academic Program Development of Jiansu Higher Education Institutions
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The design of highly efficient, durable, and earth-abundant catalysts for the oxygen evolution reaction is crucial to a variety of important energy conversion and storage processes. Here, we use carbon quantum dots (CQDs, similar to 5 nm) to form hybrids with the ultrathin nickel iron layered double-hydroxide (NiFe-LDH) nanoplates. The resulting CQD/NiFe-LDH complex exhibits high electrocatalytic activity (with an overpotential of similar to 235 mV in 1 M KOH at a current density of 10 mA cm(-2)) and stability for oxygen evolution, which almost exceed the values of all previously reported Ni-Fe compounds and were comparable to those of the most active perovskite-based catalyst.
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