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Co/Zn‐based bimetallic by Seoyoon Shin; Yeowon Yoon; Moo Whan Shin is a Engineering article available to read on EtoBox.

What is Co/Zn‐based bimetallic about?

Structural optimization and electrocatalyst utilization in air cathodes have been identified as two major factors affecting the overall performance of a lithium-air battery. Herein, a cobalt@porous carbon composite, Co@C (700-1000) was obtained by facile annealing of a Co/Zn-bimetallic metalorganic framework (MOF). In the Co/Zn-MOF, cobalt cluster was used as a precursor of the catalyst and zinc cluster as a sacrificial template to generate meso-and macropores. The lithium-air battery with the assembled Co@C (700-1000) air cathode revealed a specific capacity as high as 4 mAh cm À2 . Furthermore, the battery exhibited high cycling stability up to 67 cycles (limited capacity of 0.5 mAh cm À2 ). The high cell performance can be in relation to the catalytic activity of uniformly disseminated cobalt nanoparticles in the porous carbon matrix and the rapid diffusion and transport of Li + and O 2 owing to the optimized pore-distribution characteristics. Using a bimetallic MOFderived material, this study sheds fresh light on the design of an air cathode for lithium-air batteries.

Who reads Co/Zn‐based bimetallic?

Author

Seoyoon Shin; Yeowon Yoon; Moo Whan Shin

Publisher

Hindawi Limited

Published

2022

Language

EN

Field

Engineering (Physical Sciences)