研究目的
To fabricate stable OER electrocatalysts with good performance on a large scale in a simple, fast, green, and environment-friendly way.
研究成果
The fabricated catalysts exhibit remarkable OER activity and excellent durability in 1 M KOH. The present method is ultrafast, non-contact, high efficiency, easy control, sustainable, and environment-friendly.
研究不足
The current methods are still suffering from the complicated fabrication process as well as limited OER catalytic activity of the products. Most of the current methods require high-temperature annealing treatments and long-time hydrothermal reactions, which are complicated, time-, and energy-consuming.
1：Experimental Design and Method Selection:
Femtosecond laser ablation was utilized to fabricate Cu oxide micro/nano-structures on Cu foams by fine-tuning of the laser parameters.
2：Sample Selection and Data Sources:
Copper foams (~
3：6 mm thick) were purchased from Kunshan Metal Material Tech., Suzhou, China. List of Experimental Equipment and Materials:
The ultrafast laser beam (250 fs, 75 KHz, and 1030 nm) was used (PHAROS, LIGHT CONVERSION, Lithuania).
4：Experimental Procedures and Operational Workflow:
The as-prepared surface micro/nano-structures were obtained by the double line-by-line femtosecond laser scanning processes.
5：Data Analysis Methods:
The morphology of the synthesized samples was characterized by SEM. TEM and SAED characterization were carried out by a JEM-2100F microscope. XRD measurements were carried out on a Rigakud/max 2550 diffractometer. XPS was performed on SPECS ultrahigh vacuum system. BET measurements were carried out on a Micromeritics ASAP 2020 instrument.
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PHAROS
250 fs, 75 KHz, and 1030 nm
LIGHT CONVERSION
Used for femtosecond laser ablation to fabricate Cu oxide micro/nano-structures on Cu foams.
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JEM-2100F
Used for TEM and SAED characterization.
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TESCAN MIRA3
Used for SEM characterization.
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Rigakud/max 2550
Used for XRD measurements.
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SPECS
Used for XPS analysis.
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Micromeritics ASAP 2020
Used for BET measurements.
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CHI 760E
CH Instruments Inc. Austin
Used for electrochemical measurements.
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