1. Nickel decorated bimetallic catalysts derived from metal-organic frameworks as cathode materials for rechargeable Zinc-Air batteries.
- Author
-
Ahmed, Sheraz, Shim, Joongpyo, Sun, Ho-Jung, Rim, Hyung-Ryul, Lee, Hong-Ki, and Park, Gyungse
- Subjects
- *
METAL-organic frameworks , *NICKEL (Coin) , *STORAGE batteries , *BIMETALLIC catalysts , *OXYGEN evolution reactions , *ALKALINE batteries , *METAL-air batteries , *MESOPOROUS materials - Abstract
• Fabrication of efficient bimetallic catalysts for OER. • Nickel decoration was performed on bimetallic CNT/CoNi. • Ni/CNT/CoNi exhibited excellent electrochemical performance and cycling stability. The fabrication of efficient catalysts for the oxygen evolution reactions (OER) that are required to accelerate the sluggish kinetics of metal-air batteries has attracted significant attention for application in energy conversion devices. Metal-organic frameworks (MOFs) have been recognized as potential candidates for the formation of promising catalysts. In this study, we report the formation of Ni/CNT/CoNi using bimetallic-ZIF (CoNi-ZIF) as a precursor. Bimetallic CoNi encapsulated in carbon nanotubes (CNTs) was obtained by calcinating CoNi-ZIF-67 to yield CNT/CoNi. The resulting CNT/CoNi was highly porous with a significant specific surface area of 242 m2/g. After calcination, Ni deposition on the CNT was performed and the surface area was reduced to 168.7 m2/g. Ni/CNT/CoNi was applied as a cathode material in zinc-air batteries, exhibiting excellent electrochemical performance and cycling stability. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF