Search
The Effect of Cobalt Incorporation into Nickel–Iron Oxide/(oxy)hydroxide Catalyst on Electrocatalytic Performance Toward Oxygen Evolution Reaction
Abstract
This work presents a study on the influence of the addition of cobalt into state-of-the-art nickel–iron (NiFe) mixed oxides/hydroxides/(oxy)hydroxides on their structural and morphological properties, and oxygen evolution reaction (OER) catalytic activity. A one-step electrodeposition process is performed without any additives to fabricate NiFe and x cobalt-doped nickel/iron (xCoNiFe) layer-double-hydroxide catalysts directly on nickel foam. The addition of cobalt nitrate in the synthesis solution significantly affects the final form of the catalyst: the addition of 2 mm cobalt nitrate into the aqueous solution of 4 mm nickel and iron nitrate stabilizes the electrochemical synthesis of the catalyst, which leads to the formation of a homogenously spread 3D interconnected structure with a high electroactive surface area (0.07 cm2, 1.1 m2 cm−2: including nickel foam substrate); it induces the formation of Ni3+ desirable for the formation of the catalytically active (oxy)hydroxides, which is not observed for the state-of-the-art NiFe. The significant role of the addition of cobalt translates into improved preliminary OER catalytic stability and activity of the catalyst with an onset potential of 1.40 V, overpotential of 224 mV determined at 10 mA cm−2, and only 0.7% loss in stability after 22 h working in alkaline conditions compared with the initial parameters.
Citations
-
1 0
CrossRef
-
0
Web of Science
-
1 0
Scopus
Authors (8)
-
Marcin Zając dr inż,
- National Synchrotron Radiation Centre SOLARIS
-
Maria Rybarczyk dr inż.
- epartment of Geotechnical Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Energy Technology
pages 1 - 12,
ISSN: 2194-4288 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Cysewska K., Zając M., Łapiński M., Karczewski J., Rybarczyk M., Kamecki B., Jasiński P., Molin S.: The Effect of Cobalt Incorporation into Nickel–Iron Oxide/(oxy)hydroxide Catalyst on Electrocatalytic Performance Toward Oxygen Evolution Reaction// Energy Technology -,iss. 2100688 (2021), s.1-12
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/ente.202100688
- Verified by:
- Gdańsk University of Technology
seen 94 times
Recommended for you
Powering the Future by Iron Sulfide Type Material (FexSy) Based Electrochemical Materials for Water Splitting and Energy Storage Applications: A Review
- A. Farhan,
- W. Qayyum,
- U. Fatima
- + 7 authors