Microfluidic water splitting cell using 3D NiFe2O4 hollow spheres
Abstract
The present research work shows a simple method to synthesize 3D NiFe2O4 hollow spheres by a hydrothermal route and its application as catalyst for water splitting in an alkaline microfluidic system. The NiFe2O4 was developed by a simple mechanism from the urea hydrolysis reaction and later subjected to a hydrothermal process to carry out a single-step synthesis, obtaining novel 3D hollow nanospheres with doubles, triples and quadruples shells. 3D NiFe2O4 with large surface area and stability showed a catalytic activity for the oxygen evolution reaction (OER) comparable with the commercial material commonly employed IrO2. The NiFe2O4-based material was used as an anode and cathode in a microfluidic water splitting device, where the H2 production was 2.5 and 2.7 × 10-5 mg s-1 for 3D NiFe2O4 hollow spheres and IrO2sbnd Pt/C, respectively.
- Publication:
-
Journal of Power Sources
- Pub Date:
- February 2019
- DOI:
- 10.1016/j.jpowsour.2018.11.073
- Bibcode:
- 2019JPS...412..505M
- Keywords:
-
- Microfluidic electrolyser system;
- Oxygen evolution reaction;
- PGM-Free catalyst;
- Nickel ferrite hollow spheres