	US 11,739,010 B2
	Electrodes for selective removal of multivalent ions through capacitive deionization
Rafael Verduzco, Houston, TX (US); Amit Jain, Houston, TX (US); Jun Kim, Houston, TX (US); Qilin Li, Houston, TX (US); and Kuichang Zuo, Houston, TX (US)
Assigned to William Marsh Rice University, Houston, TX (US)
Filed by William Marsh Rice University, Houston, TX (US)
Filed on Aug. 6, 2019, as Appl. No. 16/533,402.
Claims priority of provisional application 62/715,116, filed on Aug. 6, 2018.
Prior Publication US 2020/0071200 A1, Mar. 5, 2020
Int. Cl. C02F 1/469 (2023.01); B01D 15/36 (2006.01); C02F 1/461 (2023.01)

CPC C02F 1/4691 (2013.01) [B01D 15/362 (2013.01); B01D 15/363 (2013.01); C02F 1/46114 (2013.01)]

17 Claims

1. A method of forming an electrode for capacitive deionization, comprising:

depositing a slurry onto a substrate, wherein the slurry comprises a porous material, a first crosslinkable hydrophilic polymer, and a crosslinker for the first crosslinkable hydrophilic polymer;

annealing the slurry deposited on the substrate to create a crosslinked porous layer on the substrate;

depositing a solution comprising an ion-exchange material, a second crosslinkable hydrophilic polymer, and a crosslinker for the second crosslinkable hydrophilic polymer onto the crosslinked porous layer;

chemically modifying the crosslinked porous layer with iminodiacetic acid; and

optionally annealing and/or drying the solution on the crosslinked porous layer,

wherein the slurry and/or the solution are aqueous.