Efficient CO2 Utilization via a Hybrid Na-CO2 System Based on CO2 Dissolution

Abstract

Carbon capture, utilization, and sequestration technologies have been extensively studied to utilize carbon dioxide (CO 2 ), a greenhouse gas, as a resource. So far, however, effective technologies have not been proposed owing to the low efficiency conversion rate and high energy requirements. Here, we present a hybrid Na-CO 2 cell that can continuously produce electrical energy and hydrogen through efficient CO 2 conversion with stable operation for over 1,000 hr from spontaneous CO 2 dissolution in aqueous solution. In addition, this system has the advantage of not regenerating CO 2 during charging process, unlike aprotic metal-CO 2 cells. This system could serve as a novel CO 2 utilization technology and high-value-added electrical energy and hydrogen production device.

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Identifiers

DOI

10.1016/j.isci.2018.10.027

PubMed

30447646

Journal

iScience

Year

2018