气候变化领域集成服务门户(CCPortal): Selective CO production from aqueous CO2using a Cu96In4catalyst and its integration into a bias-free solar perovskite-BiVO4tandem device

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DOI	10.1039/d0ee01279c
	Selective CO production from aqueous CO2using a Cu96In4catalyst and its integration into a bias-free solar perovskite-BiVO4tandem device
	Rahaman M.; Andrei V.; Pornrungroj C.; Wright D.; Baumberg J.J.; Reisner E.
发表日期	2020
ISSN	17545692
起始页码	3536
结束页码	3543
卷号	13 期号:10
英文摘要	Sunlight-driven production of fuels is attracting attention for the generation of storable renewable energy, but the design of selective catalysts for CO2 utilization and the assembly of unassisted devices for selective and efficient CO2-to-fuel conversion remains challenging. In this study, we report a bimetallic Cu96In4 alloy with a dendritic foam morphology for the reduction of aqueous CO2 to CO at an onset potential of -0.3 V vs. the reversible hydrogen electrode (RHE) and with >70% selectivity. Operando Raman spectroscopy reveals weaker *CO adsorption on the Cu96In4 alloy surface compared to bare Cu and supports the immediate release of CO(g) as the product from the electrocatalyst surface. The Cu96In4 catalyst is subsequently employed in an overall bias-free tandem device for CO2 conversion using water as an electron donor. The buried photovoltaic-biased photoelectrochemical cell relies on state-of-the-art triple-cation mixed halide perovskite and BiVO4 photoabsorbers that can also be assembled in an artificial leaf configuration. The device reaches a solar-to-CO energy conversion efficiency of 0.19% with a selectivity of 75% for CO after 10 h simulated sunlight irradiation using bias-free conditions. The buried perovskite\|Cu96In4 cathode shows robust, unaltered PEC activity at different solar intensities, which also allows it to function under low and diffuse sunlight. This study highlights the potential of alloying to improve catalytic performance and strategies to integrate such catalysts into solar-driven PEC devices. © The Royal Society of Chemistry.
英文关键词	Binary alloys; Carbon dioxide; Conversion efficiency; Electrocatalysts; Electrodes; Morphology; Perovskite; Photoelectrochemical cells; Solar energy; Catalytic performance; Fuel conversion; Halide perovskites; Renewable energies; Reversible hydrogen electrodes; Selective catalysts; Simulated sunlight; Solar intensities; Bismuth compounds
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/189504
作者单位	Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom; NanoPhotonics Centre, Department of Physics, University of Cambridge, J J Thomson Avenue, Cambridge, CB3 0HE, United Kingdom
推荐引用方式 GB/T 7714	Rahaman M.,Andrei V.,Pornrungroj C.,et al. Selective CO production from aqueous CO2using a Cu96In4catalyst and its integration into a bias-free solar perovskite-BiVO4tandem device[J],2020,13(10).
APA	Rahaman M.,Andrei V.,Pornrungroj C.,Wright D.,Baumberg J.J.,&Reisner E..(2020).Selective CO production from aqueous CO2using a Cu96In4catalyst and its integration into a bias-free solar perovskite-BiVO4tandem device.Energy & Environmental Science,13(10).
MLA	Rahaman M.,et al."Selective CO production from aqueous CO2using a Cu96In4catalyst and its integration into a bias-free solar perovskite-BiVO4tandem device".Energy & Environmental Science 13.10(2020).