Composition for electrode of capacitive deionization apparatus, and electrode including same
AssigneeSamsung Electronics Co., Ltd.
InventorsMyung Dong Cho, Hyun Seok Kim, Joon Seon Jeong
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Abstract
Disclosed are a composition for an electrode binder of a capacitive deionization apparatus including at least one a hydrophilic polymer and a bifunctional cross-linking agent having a hydroxy group or a carboxyl group at both terminal ends, and at least one anion exchange group therein, and the bifunctional cross-linking agent being cross-linkable with the at least one hydrophilic polymer, an electrode for a capacitive deionization apparatus including the composition, a capacitive deionization apparatus including the electrode, and a method of removing ions from a liquid by using the capacitive deionization apparatus.
Claims16
An electrode composition of a capacitive deionization apparatus including an electrode binder composition, an electrode active material and a conductive material, the electrode binder composition comprising:
- at least one hydrophilic polymer;
- and
- a bifunctional cross-linking agent, the bifunctional cross-linking agent having one of a hydroxy group and a carboxyl group at terminal ends thereof, and at least one anion exchange group therein, and the bifunctional cross-linking agent being configured to be cross-linked with the at least one hydrophilic polymer;
- wherein the at least one hydrophilic polymer includes one of:
- a polymer including a carboxyl group side chain configured to be ester-bonded to the hydroxy group of the bifunctional cross-linking agent,
- a polymer including a hydroxy group side chain configured to be ester-bonded to a carboxyl group of the cross-linking agent, and
- a polymer including both the carboxyl group side chain and the hydroxy group side chain, and
- the conductive material including at least one of VGCF (Vapor Growth Carbon Fiber), natural graphite, artificial graphite, acetylene black, ketjen black, and carbon fiber.
Dependencies are inferred from the claim text.