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Nanoporous Fe and Co Dually Doped Carbon Nanotube-Based Oxygen Electrocatalysts for Efficient Zinc–Air Batteries.
- Source :
- ACS Applied Nano Materials; 6/14/2024, Vol. 7 Issue 11, p13536-13546, 11p
- Publication Year :
- 2024
-
Abstract
- The development of bifunctional electrocatalysts to overcome the slow kinetics of the oxygen reduction–evolution reaction (ORR/OER) remains a significant challenge. Therefore, combined with morphology control engineering and bimetallic doping strategies, Fe and Co bimetals are effectively doped into carbon nanotube-coated three-dimensional porous materials, and a cost-effective bifunctional oxygen-electrode material is successfully prepared. The synthesized Fe<subscript>25</subscript>–NZ8@Co<subscript>500</subscript>-CN catalysts show high electrocatalytic activity in both ORR (E<subscript>1/2</subscript> = 0.85 V) and OER (η<subscript>j=10</subscript> = 350 mV). Furthermore, the zinc-air battery is assembled with the Fe<subscript>25</subscript>–NZ8@Co<subscript>500</subscript>-CN catalyst as the air electrode, which has an excellent power density of 183.65 mW cm<superscript>–2</superscript>, a specific capacity of 699.2 mA h g<subscript>Zn</subscript><superscript>–1</superscript>, and a long-term stability of 200 h. This newly synthesized bimetallic-doped catalyst offers a design option for oxygen electrocatalysts in zinc–air batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 25740970
- Volume :
- 7
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- ACS Applied Nano Materials
- Publication Type :
- Academic Journal
- Accession number :
- 177927596
- Full Text :
- https://doi.org/10.1021/acsanm.4c02088