气候变化领域集成服务门户(CCPortal): A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics

CCPortal

DOI	10.1039/c7ee01747b
	A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics
	Urbain F.; Tang P.; Carretero N.M.; Andreu T.; Gerling L.G.; Voz C.; Arbiol J.; Morante J.R.
发表日期	2017
ISSN	17545692
起始页码	2256
结束页码	2266
卷号	10 期号:10
英文摘要	The conversion of carbon dioxide (CO2) into value-added chemicals and fuels, preferably using renewable energy and earth-abundant materials, is considered a key priority for future energy research. In this work, a bias-free reactor device for the solar-driven conversion of CO2 to synthesis gas (syngas) has been developed. The integrated fluidic device consists of a cathode made of copper foam coated with low-cost nanosized zinc flakes as catalyst to perform the CO2 reduction reaction (CO2RR) to syngas, an adapted silicon heterojunction solar cell structure as photoanode with nickel foam as catalyst to facilitate the oxygen evolution reaction (OER), and a bipolar membrane separating the respective catholyte and anolyte compartments. The membrane allows for the operation of the catholyte and anolyte at different pH values. Stable and tunable hydrogen-to-carbon monoxide (H2:CO) ratios between 5 and 0.5 along with high CO Faradaic efficiencies of up to 85% and CO current densities of 39.4 mA cm-2 have been demonstrated. Under photoelectrolysis conditions, the photovoltage of the photoanode was varied between 0.6 V and 2.4 V by connecting up to four heterojunction solar cells in series, and thus reducing the overall cell voltage solely by solar energy utilization. Bias-free operation of the integrated device has been achieved under ambient conditions with active areas for CO2RR and OER, respectively, of 10 cm2. An operation current density of 5.0 mA cm-2 was measured under 100 mW cm-2 illumination of the complete device, which corresponds to a solar-to-syngas conversion efficiency of 4.3%. © The Royal Society of Chemistry.
英文关键词	Carbon dioxide; Carbon monoxide; Catalysts; Energy utilization; Heterojunctions; Nanostructured materials; Renewable energy resources; Solar energy; Solar power generation; Synthesis gas; Earth-abundant materials; Faradaic efficiencies; Heterojunction solar cells; Oxygen evolution reaction; Renewable energies; Silicon heterojunctions; Synthesis gasses (syngas); Value-added chemicals; Solar cells; carbon dioxide; catalyst; efficiency measurement; electrode; electrokinesis; electrolyte; energy efficiency; equipment; pH; photovoltaic system; reduction; renewable resource; silicon; solar power
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/190403
作者单位	IREC, Catalonia Institute for Energy Research, Jardins de les Dones de Negre 1, Sant Adrià de Besòs, Barcelona Catalonia, 08930, Spain; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, Barcelona Institute of Science and Technology (BIST), Campus UAB Bellaterra, Barcelona Catalonia, 08193, Spain; Universitat de Barcelona, Martí i Franquès 1, Barcelona Catalonia, 08028, Spain; Electronic Engineering Department, Universitat Politècnica de Catalunya, Jordi Girona 1-3, Barcelona Catalonia, 08034, Spain; ICREA, Pg. Lluís Companys 23, Barcelona Catalonia, 08010, Spain
推荐引用方式 GB/T 7714	Urbain F.,Tang P.,Carretero N.M.,et al. A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics[J],2017,10(10).
APA	Urbain F..,Tang P..,Carretero N.M..,Andreu T..,Gerling L.G..,...&Morante J.R..(2017).A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics.Energy & Environmental Science,10(10).
MLA	Urbain F.,et al."A prototype reactor for highly selective solar-driven CO2 reduction to synthesis gas using nanosized earth-abundant catalysts and silicon photovoltaics".Energy & Environmental Science 10.10(2017).