US 12,454,473 B2
Integrated CDI electrode
Pradeep Thalappil, Chennai (IN); Md Rabiul Islam, Chennai (IN); Soujit Sengupta, Chennai (IN); Srikrishnarka Pillalamarri, Chennai (IN); and Sourav Kanti Jana, Chennai (IN)
Assigned to INDIAN INSTITUTE OF TECHNOLOGYMADRAS (IIT MADRAS), Chennai (IN)
Appl. No. 16/958,971
Filed by INDIAN INSTITUTE OF TECHNOLOGY MADRAS (IIT MADRAS), Chennai (IN)
PCT Filed Dec. 29, 2018, PCT No. PCT/IN2018/050894
§ 371(c)(1), (2) Date Jun. 29, 2020,
PCT Pub. No. WO2019/130355, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. 201741047400 (IN), filed on Dec. 30, 2017.
Prior Publication US 2020/0331778 A1, Oct. 22, 2020
Int. Cl. C02F 1/469 (2023.01); C02F 1/461 (2023.01)
CPC C02F 1/4691 (2013.01) [C02F 1/46109 (2013.01); C02F 2001/46133 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrode assembly for capacitive deionization (CDI) comprising:
a) at least one electrode made of chemically-linked cation exchange resin molecular constructs synthesized by in-situ polymerization of a styrene resin monomer and a two-dimensional material selected from the group consisting of reduced graphene oxide (RGO), molybdenum disulfide (MoS2), tungsten diselenide (WSe2), tungsten disulfide (WS2) and any combination thereof, the in-situ polymerization comprising mixing the styrene resin monomer with the two-dimensional material, to obtain a two-dimensional material polystyrene composite, followed by functionalization of the two-dimensional material polystyrene composite with a sulfonate and/or a carboxylate moiety;
b) at least one electrode made of chemically-linked anion exchange resin molecular constructs synthesized by in-situ polymerization of a styrene resin monomer and a two-dimensional material selected from the group consisting of reduced graphene oxide (RGO), molybdenum disulfide (MoS2), tungsten diselenide (WSe2), tungsten disulfide (WS2) and any combination thereof, to obtain a two-dimensional material-polystyrene composite, followed by functionalization of the two-dimensional material polystyrene composite with an amine moiety;
wherein, electro-desorption during CDI does not lead to readsorption and consequent reduction of adsorption capacity of a deionization system comprising the electrode assembly.