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The P/NiFe doped NiMoO4 micro-pillars arrays for highly active and durable hydrogen/oxygen evolution reaction towards overall water splitting
- Source :
- International Journal of Hydrogen Energy. 44:24546-24558
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Water splitting is an efficient strategy to produce purity hydrogen and convert intermittent electricity from renewable wind and solar sources. In this work, dense NiMoO4 micro-pillars arrays (MPAs) were in-situ grown on nickel foam (NF) through facile hydrothermal method, then the NiMoO4/NF were converted into NiMoO4–P/NF and NiFe/NiMoO4/NF via phosphating and electrodeposition method, respectively. The NiMoO4–P/NF electrode required small overpotentials of 34 mV@10 mA cm−2 and 130 mV@100 mA cm−2 for hydrogen evolution reaction (HER). The NiFe/NiMoO4/NF electrode exhibited excellent oxygen evolution reaction (OER) activity with overpotentials of 210 mV@10 mA cm−2 and 300 mV@100 mA cm−2. The overall water splitting using the anode-cathode couple of NiFe/NiMoO4/NF||NiMoO4–P/NF only consumes low voltages of 1.47 V@10 mA cm−2 for 100 h and 1.66 V@100 mA cm−2 for 50 h in 1 M KOH. The electronic modification and the well-designed hierarchical structure contribute the high energy-efficient and stabile overall water splitting.
- Subjects :
- Materials science
Hydrogen
Renewable Energy, Sustainability and the Environment
Doping
Oxygen evolution
Energy Engineering and Power Technology
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Hydrothermal circulation
0104 chemical sciences
Nickel
Fuel Technology
chemistry
Chemical engineering
Electrode
Water splitting
Hydrogen evolution
0210 nano-technology
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 44
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........510708f8f5dc8ec7acdc1e37ea3fe255