US 11,787,711 B2
Deionization electrode, apparatus and method for deionization electrode, electrode module and deionization module
Kyung Seok Kang, Daejeon (KR); Kyung Han Lee, Daejeon (KR); Nam Soo Park, Daejeon (KR); Hyun Woo Yoo, Daejeon (KR); and Bo Hyung Ryoo, Daejeon (KR)
Assigned to SIONTECH CO., LTD., Daejeon (KR)
Appl. No. 16/635,063
Filed by SIONTECH CO., LTD., Daejeon (KR)
PCT Filed Jan. 28, 2020, PCT No. PCT/KR2020/001239
§ 371(c)(1), (2) Date Mar. 10, 2020,
PCT Pub. No. WO2021/149855, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 10-2020-0008104 (KR), filed on Jan. 21, 2020.
Prior Publication US 2021/0221711 A1, Jul. 22, 2021
Int. Cl. C02F 1/469 (2023.01)
CPC C02F 1/4691 (2013.01) [C02F 2201/46 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A deionization unit comprising:
a cylindrical container body;
a first cover formed at one end of the cylindrical container body, the first cover having an introduction port formed therein;
a second cover formed at the other end of the cylindrical container body, the second cover having a discharge port formed therein;
electrode modules disposed in the cylindrical container body in series; and
a power supply terminal extending through the first cover and/or the second cover so as to protrude, the power supply terminal being configured to supply power to the electrode modules,
wherein at least one of the electrode modules is a capacitive electrode module comprising:
a plurality of stacked deionization electrodes; and
a spacer configured to define a flow path between neighboring ones of the plurality of the stacked deionization electrodes,
wherein at least one of the plurality of the stacked deionization electrodes is a capacitive deionization electrode comprising:
a current collector configured to have a circular flat structure, the current collector having a first hole formed therein;
a first adsorption layer located on one surface of the current collector, the first adsorption layer being configured to have a flat structure, the first adsorption layer being porous;
a second adsorption layer located on the other surface of the current collector, the second adsorption layer being configured to have a flat structure, the second adsorption layer being porous;
a first ion selective membrane located on a surface of the first adsorption layer; and
a second ion selective membrane located on a surface of the second adsorption layer,
wherein a first recess and a second recess are symmetrically formed in opposite edges of the capacitive deionization electrode, an electrode tip having a shape of a protrusion is formed and protrudes from the first recess, and a second hole is formed in the electrode tip,
wherein the first adsorption layer and the second adsorption layer are made of an activated carbon powder, and the activated carbon powder has a uniform size, and
wherein a thickness of each of the first adsorption layer and the second adsorption layer is equalized.