气候变化领域集成服务门户(CCPortal): Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution

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DOI	10.1039/c9ee02571e
	Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution
	Chen X.; Lobo F.L.; Bian Y.; Lu L.; Chen X.; Tucker M.P.; Wang Y.; Ren Z.J.
发表日期	2020
ISSN	17545692
起始页码	495
结束页码	502
卷号	13 期号:2
英文摘要	Hydrogen evolution is not a spontaneous reaction, so current electrochemical H2 systems either require an external power supply or use complex photocathodes. We present in this study that by using electrical decoupling, H2 can be produced spontaneously from wastewater. A power management system (PMS) circuit was deployed to decouple bioanode organic oxidation from abiotic cathode proton reduction in the same electrolyte. The special PMS consisted of a boost converter and an electromagnetic transformer, which harvested energy from the anode followed by voltage magnification from 0.35 V to 2.2-2.5 V, enabling in situ H2 evolution for over 96 h without consuming any external energy. This proof-of-concept demonstrated a cathode faradaic efficiency of 91.3% and a maximum overall H2 conversion efficiency of 28.9%. This approach allows true self-sustaining wastewater to H2 evolution, and the system performance can be improved via the PMS and reactor optimization. © 2020 The Royal Society of Chemistry.
英文关键词	DC-DC converters; Electric power systems; Electrolytes; Field emission cathodes; Electrical decoupling; Electro-magnetic transformers; Electrochemical reactions; External power supplies; Faradaic efficiencies; Power management systems; Reactor optimization; Spontaneous reactions; Hydrogen evolution reaction; electricity supply; electrochemical method; electrode; electrolyte; energy efficiency; hydrogen; optimization; oxidation; wastewater treatment
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/189706
作者单位	Department of Civil and Environmental Engineering, Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ 08544, United States; Departamento de Engenharia Hidráulica e Ambiental, Universidade Federal Do Ceará, Brazil; National Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, United States; Earth Institute and School of International and Public Affairs, Columbia University, New York, NY 10027, United States
推荐引用方式 GB/T 7714	Chen X.,Lobo F.L.,Bian Y.,et al. Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution[J],2020,13(2).
APA	Chen X..,Lobo F.L..,Bian Y..,Lu L..,Chen X..,...&Ren Z.J..(2020).Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution.Energy & Environmental Science,13(2).
MLA	Chen X.,et al."Electrical decoupling of microbial electrochemical reactions enables spontaneous H2 evolution".Energy & Environmental Science 13.2(2020).