气候变化领域集成服务门户(CCPortal): An alkaline polymer electrolyte CO2 electrolyzer operated with pure water

CCPortal

DOI	10.1039/c9ee01204d
	An alkaline polymer electrolyte CO2 electrolyzer operated with pure water
	Yin Z.; Peng H.; Wei X.; Zhou H.; Gong J.; Huai M.; Xiao L.; Wang G.; Lu J.; Zhuang L.
发表日期	2019
ISSN	1754-5692
起始页码	2455
结束页码	2462
卷号	12 期号:8
英文摘要	The electrochemical conversion of CO2 to fuels or chemicals is an attractive approach that can combine sustainable energy utilization and carbon recycling, but its practicability is still vague, because the CO2 reduction reaction (CO2RR) has hitherto been mostly studied in electrolyte solutions, with small current densities limited by the solubility of CO2. An important and urgent task is thus to develop CO2 electrolyzers that can demonstrate the feasibility of the large-scale conversion of CO2, in particular analogs of water electrolyzers using polymer electrolyte based gas-diffusion electrodes. Here we report a high-performance CO2 electrolyzer making use of alkaline polymer electrolytes (APEs). A highly conductive and stable APE, quaternary ammonia poly(N-methyl-piperidine-co-p-terphenyl) (QAPPT), was applied both as the membrane separator and the ionomer impregnating the gas-diffusion electrodes. Dry CO2 was fed into the Au cathode, with a faradaic efficiency of CO production (COFE) over 85%, and the oxygen evolution reaction (OER) occurred at the IrO2 anode fed with pure water. The cell was operated at temperatures up to 80 °C, and the current density reached 0.5 A cm-2 at 3 V at 60 °C. The stability of this electrolyzer was tested under 0.1 A cm-2, and the cell voltage remained stable at 2.25 V over 100 h, with the COFE staying at 90-95%. © The Royal Society of Chemistry 2019.
语种	英语
scopus关键词	Ammonia; Carbon dioxide; Diffusion in gases; Electrodes; Electrolytic cells; Energy utilization; Iridium compounds; Electrochemical conversion; Electrolyte solutions; Faradaic efficiencies; Gas diffusion electrodes; Membrane separators; Oxygen evolution reaction; Polymer electrolyte; Sustainable energy; Polyelectrolytes; alkalinity; electrochemical method; electrolyte; energy use; equipment; polymer; recycling
来源期刊	Energy and Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162892
作者单位	Institute for Advanced Studies, Wuhan University, Wuhan, 430072, China; College of Chemistry and Molecular Sciences, Hubei Key Lab of Electrochemical Power Sources, Wuhan University, Wuhan, 430072, China
推荐引用方式 GB/T 7714	Yin Z.,Peng H.,Wei X.,et al. An alkaline polymer electrolyte CO2 electrolyzer operated with pure water[J],2019,12(8).
APA	Yin Z..,Peng H..,Wei X..,Zhou H..,Gong J..,...&Zhuang L..(2019).An alkaline polymer electrolyte CO2 electrolyzer operated with pure water.Energy and Environmental Science,12(8).
MLA	Yin Z.,et al."An alkaline polymer electrolyte CO2 electrolyzer operated with pure water".Energy and Environmental Science 12.8(2019).