A green approach for enhancing the electrocatalytic activity and stability of NiFe2O4/CB nanospheres towards hydrogen production

Tshimangadzo S. Munonde, Haitao Zheng, Mphoma S. Matseke, Philiswa N. Nomngongo, Yi Wang and Panagiotis Tsiakaras

Renewable Energy, 2020, vol. 154, issue C, 704-714

Abstract: Among the exfoliation processes applied on layered materials, it is the first time to explore the ultrasonic exfoliation in water for improving the catalytic properties of NiFe2O4/CB (CB = carbon black) nanospheres towards the electrocatalytic hydrogen evolution reaction (HER) in acidic media. It is found that after exfoliation, the overpotential of HER on NiFe2O4/CB nanospheres is improved by about 90 mV at a current density of 10 mA cm−2. Moreover, the exfoliated NiFe2O4/CB nanospheres are not only more stable than the commercial Pt/C catalyst, but also they exhibit an overpotential improvement of about 100 mV at 50 mA cm−2, after 6000 CV cycles.

Keywords: Hydrogen evolution reaction; Ultrasonic exfoliation; NiFe2O4; Nanospheres; Acid media (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:154:y:2020:i:c:p:704-714

DOI: 10.1016/j.renene.2020.03.022

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