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03/26/2020 HYU News > Academics > ERICA

Title

Hanyang University Professor Kim Jong-Ho, Developed a Nanocatalyst that Enhances the Performance of Metal-Air Batteries

Attracts the eyes of electronic vehicle industries and more, due to its high safety and efficiency compared to Lithium-ion batteries

Global News Team

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http://www.hanyang.ac.kr/surl/DhNJB

Contents
Professor Kim Jong-ho
Hanyang University announced on March 26th that Professor Kim Jong-ho's team in the Department of Materials Science and Chemical Engineering of Hanyang University ERICA campus has developed a new nanocatalyst that enhances the performance of metal-air batteries.

A "metal-air battery" is a next-generation battery that is charged and discharged through oxygen in the air, which has bigger energy storage, a lower price, and no possibility of explosion compared to the Lithium-ion batteries, and therefore is attracting the attention of the electric vehicle industry.

The performance of a metal-air battery that can be charged and discharged is determined by the oxygen's oxidation and deoxidation rate of reaction happening within the cathode. Up until now, expensive catalysts such as platinum (Pt) and ruthenium (Ru) have been used to catalyze the oxidation and deoxidation of the oxygen. However, these catalysts had the problem of reducing the lifespan of the battery, due to its high price and low stability. For this reason, the need for a carbon catalyst with a low price and great performance has been understood. 

Professor Kim's team coined the "Solvothermal Radical Synthesis," solving the problem through delicately adjusting the nanostructure and vitality of the carbon catalyst. Professor Kim's team attached cobalt atoms or cobalt nanoparticles to porous carbon nanostructures, in order to adjust the interaction between organic-inorganic molecules and precisely control the structure and vitality of the catalyst, thereby enhancing the performance and stability of the catalysts. The metal-air battery produced through the use of this carbon-nanocatalyst has a 30% lower price than the original catalyst, which maintains its stabilized performance above 100%, even after its long charging and discharging. 

Professor Kim mentioned that "when the carbon-nanocatalyst with a cheap price and high performance is applied to metal-air batteries, it will remarkably reduce the unit cost of electric vehicles," and added, "This research provides a new method to develop a next-generation nanocatalyst material with precisely adjusted structure and performance through molecular controlling."
  
This research was supported by the National Research Foundation of Korea and was conducted with Professor Lee Sang-uck's team from Hanyang University ERICA Departement of Chemical and Molecular Engineering, and the result of the research (Paper Title: Molecular engineering of nanostructures and activities on bifunctional oxygen electrocatalysts for Zinc-air batteries) that was published online on one of the top internationally renowned academic journals within the field of chemical and environmental engineering, Applied Catalysis B: Environmental, on March 9th. 

 
▲ Synthesis of carbon-based nanocatalyst through effective molecule control


 
<Reference> Related paper: 2020_3_Molecular engineering of nanostructures and activities on bifunctional oxygen electrocatalysts for Zinc-air batteries  『Applied Catalysis B: Environmental』



Global News Team
Translated by: Lee Wonyoung 
global@hanyang.ac.kr
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