Ionic polymer membrane for a carbon dioxide electrolyzer

Abstract

Described herein is a process for the reduction of carbon dioxide comprising: providing an electrochemical device comprising an anode, a cathode, and a polymeric anion exchange membrane therebetween, wherein the polymeric anion exchange membrane comprises an anion exchange polymer, wherein the anion exchange polymer comprises at least one positively charged group selected from a guanidinium, a guanidinium derivative, an N-alkyl conjugated heterocyclic cation, or combinations thereof; introducing a composition comprising carbon dioxide to the cathode; and applying electrical energy to the electrochemical device to effect electrochemical reduction of the carbon dioxide.

Description

technical field [0001] The invention discloses a polymer ion exchange membrane used in a carbon dioxide electrochemical device. Background technique [0002] carbon dioxide (CO 2 ) is a greenhouse gas that plays a major role in global warming and climate change. A great deal of research work has been done over the past few decades to find ways to reduce atmospheric CO 2 Emissions methodology, including carbon sinks. [0003] One of the proposed solutions is to capture CO2 at high emitting point sources such as fossil fuel based power stations, steel mills, cement plants, etc. 2 , and put CO 2 Storage or "storage" in underground depleted oil and gas fields, unrecoverable coal seams, and deep saline aquifers. However, there are many places where either a lack of suitable geographical storage sites or public opposition to local underground storage of highly compressed gases prevents this method of isolation. [0004] As an alternative, the captured CO 2 As a low-cost car...

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Problems solved by technology

However, there are many locations where either a lack of suitable geographical storage sites or publ

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