Korea Institute of Science and Technology

Jimin Kong

Hyun Seo Park

Jong Hyun Jang

So Young Lee

Jin Young Kim

Jonghee Han

Hyoung-Juhn Kim

Suk Woo Nam

Sung Jong Yoo

Hee Soo Kim

Hee-Young Park

Chang Won Yoon

Jong Hyuk Park

Bora Seo

Jihyun Choi

Ara Jo

Hyung Chui Ham

Kahyun Hur

Gyu Seong Yi

Min-Soek Kim

The present disclosure relates to a catalyst for electrochemical synthesis of ammonia, which includes a metal sulfide, a method for preparing the same and a method for regenerating the same.

Catalyst for electrochemical synthesis of ammonia, method for preparing same, and method for regenerating same

ABSTRACT OF THE DISCLOSURE A catalyst for electrochemical ammonia synthesis incudes a carbon carrier composed of carbon; and 20-65 wt% of iron, copper and sulfur, based on weight of the carbon, supported in the carbon carrier. The catalyst may be coated on an electrode selected from the group consisting of carbon paper, carbon cloth, carbon felt, fluorine- doped tin oxide (FTO) conducting glass, and combinations thereof by spray coating, screen printing or ink jet printing. The catalyst has an ammonia synthesis activity up to several times to several tens of times of the activity of the existing single metal or metal oxide catalysts. Thus, when using the catalyst, it is possible to provide a method for electrochemical ammonia synthesis having an improved ammonia production yield and rate.

Catalyst for electrochemical ammonia synthesis and method for producing the same

An electrochemical method for ammonia synthesis including the steps of: preparing a single-crystalline metal thin film; and synthesizing ammonia by using the single-crystalline metal thin film electrode. More particularly, it relates to improvement of the production yield and synthesis rate of ammonia trough the method for preparing ammonia by using an electrochemical reactor which includes a cathode including a single-crystalline metal thin film on the surface thereof, an anode and an electrolyte, wherein the method includes the steps of: supplying nitrogen to the cathode; supplying aqueous electrolyte solution to the anode; and applying an electric voltage between the cathode and the anode.

Method for electrochemical ammonia synthesis using single-crystalline metal catalyst

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Seoul, South Korea

Jimin Kong