气候变化领域集成服务门户(CCPortal): Unbiased solar H2 production with current density up to 23 mA cm-2 by Swiss-cheese black Si coupled with wastewater bioanode

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DOI	10.1039/c8ee03673j
	Unbiased solar H2 production with current density up to 23 mA cm-2 by Swiss-cheese black Si coupled with wastewater bioanode
	Lu L.; Vakki W.; Aguiar J.A.; Xiao C.; Hurst K.; Fairchild M.; Chen X.; Yang F.; Gu J.; Ren Z.J.
发表日期	2019
ISSN	1754-5692
起始页码	1088
结束页码	1099
卷号	12 期号:3
英文摘要	Unbiased photoelectrochemical hydrogen production with high efficiency and durability is highly desired for solar energy storage. Here, we report a microbial photoelectrochemical (MPEC) system that demonstrated superior performance when equipped with bioanodes and black silicon photocathode with a unique "Swiss-cheese" interface. The MPEC utilizes the chemical energy embedded in wastewater organics to boost solar H2 production, which overcomes barriers on anode H2O oxidation. Without any bias, the MPEC generates a record photocurrent (up to 23 mA cm-2) and retains prolonged stability for over 90 hours with high Faradaic efficiency (96-99%). The calculated turnover number for MoSx catalyst during a 90 h period is 495471 with an average frequency of 1.53 s-1. The system replaced pure water on the anode with actual wastewater and achieved waste organic removal up to 16 kg COD m-2 photocathode per day. Cost credits from concurrent wastewater treatment and low-cost design make photoelectrochemical H2 production practical for the first time. © 2019 The Royal Society of Chemistry.
语种	英语
scopus关键词	Anodes; Chemical oxygen demand; Electrochemistry; Hydrogen storage; Molybdenum compounds; Photocathodes; Silicon; Solar energy; Solar power generation; Wastewater treatment; Average frequency; Chemical energy; Faradaic efficiencies; High-efficiency; Low-cost design; Organic removal; Photoelectrochemical hydrogen production; Photoelectrochemicals; Hydrogen production; catalysis; catalyst; chemical oxygen demand; efficiency measurement; electrochemical method; electrode; energy storage; hydrogen; oxidation; performance assessment; photochemistry; solar power; wastewater; wastewater treatment
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/162658
作者单位	Department of Civil and Environmental Engineering, Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ 08544, United States; Department of Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, Boulder, CO 80309, United States; Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States; Idaho National Laboratory, Nuclear Materials Department, 2525 Fremont Avenue, Idaho Falls, ID 83415, United States; National Renewable Energy Laboratory, Chemistry and Nanoscience Center, Golden, CO 80401, United States
推荐引用方式 GB/T 7714	Lu L.,Vakki W.,Aguiar J.A.,et al. Unbiased solar H2 production with current density up to 23 mA cm-2 by Swiss-cheese black Si coupled with wastewater bioanode[J],2019,12(3).
APA	Lu L..,Vakki W..,Aguiar J.A..,Xiao C..,Hurst K..,...&Ren Z.J..(2019).Unbiased solar H2 production with current density up to 23 mA cm-2 by Swiss-cheese black Si coupled with wastewater bioanode.Energy and Environmental Science,12(3).
MLA	Lu L.,et al."Unbiased solar H2 production with current density up to 23 mA cm-2 by Swiss-cheese black Si coupled with wastewater bioanode".Energy and Environmental Science 12.3(2019).