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DOI	10.1039/c9ee02412c
	Faradaic electro-swing reactive adsorption for CO2 capture
	Voskian S.; Hatton T.A.
发表日期	2019
ISSN	17545692
起始页码	3530
结束页码	3547
卷号	12 期号:12
英文摘要	Carbon capture is one of the foremost methods for curtailing greenhouse gas emissions. Incumbent technologies are inherently inefficient due to thermal energy losses, large footprint, or degradation of sorbent material. We report a solid-state faradaic electro-swing reactive adsorption system comprising an electrochemical cell that exploits the reductive addition of CO2 to quinones for carbon capture. The reported device is compact and flexible, obviates the need for ancillary equipment, and eliminates the parasitic energy losses by using electrochemically activated redox carriers. An electrochemical cell with a polyanthraquinone-carbon nanotube composite negative electrode captures CO2 upon charging via the carboxylation of reduced quinones, and releases CO2 upon discharge. The cell architecture maximizes the surface area exposed to gas, allowing for ease of stacking of the cells in a parallel passage contactor bed. We demonstrate the capture of CO2 both in a sealed chamber and in an adsorption bed from inlet streams of CO2 concentrations as low as 0.6% (6000 ppm) and up to 10%, at a constant CO2 capacity with a faradaic efficiency of >90%, and a work of 40-90 kJ per mole of CO2 captured, with great durability of electrochemical cells showing <30% loss of capacity after 7000 cylces. © 2019 The Royal Society of Chemistry.
英文关键词	Adsorption; Carbon capture; Carbon nanotubes; Carboxylation; Electric discharges; Electrochemical cells; Energy dissipation; Gas emissions; Greenhouse gases; Quinone; Ancillary equipment; Carbon-nanotube composites; Cell architectures; Faradaic efficiencies; Incumbent technology; Negative electrode; Parasitic energy loss; Reactive adsorption; Carbon dioxide; adsorption; carbon nanotube; concentration (composition); electrochemical method; energy efficiency; equipment; greenhouse gas
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189775
作者单位	Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
推荐引用方式 GB/T 7714	Voskian S.,Hatton T.A.. Faradaic electro-swing reactive adsorption for CO2 capture[J],2019,12(12).
APA	Voskian S.,&Hatton T.A..(2019).Faradaic electro-swing reactive adsorption for CO2 capture.Energy & Environmental Science,12(12).
MLA	Voskian S.,et al."Faradaic electro-swing reactive adsorption for CO2 capture".Energy & Environmental Science 12.12(2019).