Electrode for electrolysis
AssigneeLG Chem, Ltd.
InventorsMyung Hun Kim, Yeon Yi Kim, Hee Jun Eom, Dong Chul Lee
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Abstract
The present technology relates to an electrode for electrolysis which has a coating layer containing an ytterbium oxide, wherein the electrode for electrolysis of the present technology is characterized by exhibiting excellent durability and improved overvoltage. Further, the present technology relates to a method of preparing an electrode for electrolysis which includes: applying a coating composition on at least one surface of a metal base, and coating by drying and heat-treating the metal base on which the coating composition has been applied, wherein the coating composition includes a ruthenium precursor and an ytterbium precursor.
Claims7
An electrode for electrolysis, the electrode comprising:
- a metal base layer;
- and
- a coating layer containing a ruthenium oxide, an ytterbium oxide, a cerium oxide, and a platinum group oxide,
- wherein a molar ratio of a ruthenium element to an ytterbium element, which are contained in the coating layer, is in a range of 100:10 to 100:15,
- wherein a molar ratio of a ruthenium element to a cerium element, which are contained in the coating layer, is in a range of 100:5 to 100:15,
- wherein a molar ratio of a ruthenium element to a platinum group element, which are contained in the coating layer, is in a range of 100:2 to 100:8,
- wherein the coating layer is formed on at least one surface of the base layer,
- wherein the platinum group oxide is a rhodium oxide, palladium oxide, osmium oxide, iridium oxide or platinum oxide;
- and
- wherein, when the ytterbium oxide is included in the coating layer, the electrode for electrolysis has better durability and performance degradation suppression due to electrical conductivity of the ytterbium oxide that provides for a smooth and particle microstructure as compared to a needle like microstructure that has comparably less electrical conductivity.
Dependencies are inferred from the claim text.