Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 38, Pages 32812-32819Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b10893
Keywords
nickel phosphide; macroporous; large area; bifunctional electrocatalyst; water splitting
Funding
- National Natural Science Foundation of China [21673302]
- GDUPS
- Pearl River S&T Nova Program of Guangzhou [2014J2200025]
- Program of Guangzhou Science and Technology [201504010031]
- Fundamental Research Funds for the Central Universities
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Transition metal phosphides have recently been regarded as robust, inexpensive electrocatalysts for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). Thus far, tremendous scientific efforts have been applied to improve the catalytic activity of the catalyst, whereas the scale-up fabrication of morphology-controlled catalysts while maintaining their desired performance remains a great challenge. Herein, we present, a facile and scalable approach to fabricate the macroporous Ni2P/nickel foam electrode. The obtained electrocatalyst exhibits superior bifunctional catalytic activity and durability, as evidenced by a low overpotential of 205 and 300 mV required to achieve a high current density of 100 mA cm(-2) for HER and OER, respectively. Such a spray-based strategy is believed to widely adapt for the preparation of electrodes with uniform macroporous structures over a large area (e.g., 100 cm(2)), which provides a universal strategy for the mass fabrication of high performance water-splitting electrodes.
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