Korea Institute of Science and Technology

Youngseung Na

So Young Lee

Jin Young Kim

Hyoung-Juhn Kim

Jong Hyun Jang

Sung Jong Yoo

Hyun Seo Park

Dirk Henkensmeier

Hye Jin Lee

Seunghoe Choe

Hyung Chul Ham

Ahyoun Lim

Min Gwan Ha

Provided is a membrane electrode assembly for a proton exchange membrane water electrolyzer, including: an oxygen electrode including an iridium oxide (IrO) layer which is an electrodeposited oxygen electrode catalyst layer on a titanium (Ti) layer which is a diffusion layer; a hydrogen electrode in which a hydrogen electrode catalyst layer is formed on a diffusion layer; and an electrolyte membrane placed between the oxygen electrode catalyst layer and the hydrogen electrode catalyst layer, in which a portion of the pores of the Ti diffusion layer are filled with an electrolyte of the electrolyte membrane.

Membrane electrode assembly for proton exchange membrane water electrolyzer and method of preparing membrane electrode assembly for proton exchange membrane water electrolyzer

The present disclosure relates to an IrOelectrodeposited porous titanium composite layer of a polymer electrolyte membrane water electrolysis apparatus serving as both a diffusion layer and an oxygen electrode, the apparatus including: a porous titanium (Ti) layer; and an electrodeposited iridium oxide (IrO) layer on the porous Ti layer. The IrOlayer may be uniformly deposited on a porous Ti layer through an electrolysis process, and the electrodeposited IrOlayer may play multiple roles as not only a catalyst layer toward oxygen evolution reaction (OER) on the surface of the Ti layer, but also a corrosion-protection layer which prevents an inner Ti layer from corrosion.

Iridium oxide electrodeposited porous titanium composite layer of polymer electrolyte membrane water electrolysis apparatus, method for preparing the same, and polymer electrolyte membrane water electrolysis apparatus using the same

Disclosed is an electrochemical reaction cell enhancing a reduction reaction. The electrochemical reaction cell enhancing a reduction reaction comprises: a membrane electrode assembly including a polymer electrolytic membrane, a cathode formed by sequentially stacking a first gas diffusion layer and a first catalyst layer on one surface of the electrolytic membrane, and an anode formed by sequentially stacking a second catalyst layer and a second gas diffusion layer on the other surface of the electrolytic membrane; a first distribution plate stacked on the first catalyst layer to supply a reaction gas and a cathode electrolytic solution dissolved with the reaction gas to the first catalyst layer along separate channels; and a second distribution plate stacked on the second gas diffusion layer to supply an anode electrolytic solution to the second gas diffusion layer.

Electrochemical reaction cell enhancing reduction reaction

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Seoul, South Korea

Youngseung Na