气候变化领域集成服务门户(CCPortal): Water splitting by electrolysis at high current densities under 1.6 volts

CCPortal

DOI	10.1039/c8ee00927a
	Water splitting by electrolysis at high current densities under 1.6 volts
	Zhou H.; Yu F.; Zhu Q.; Sun J.; Qin F.; Yu L.; Bao J.; Yu Y.; Chen S.; Ren Z.
发表日期	2018
ISSN	17545692
起始页码	2858
结束页码	2864
卷号	11 期号:10
英文摘要	Splitting water into hydrogen and oxygen by electrolysis using electricity from intermittent waste heat, wind, or solar energies is one of the easiest and cleanest methods for high-purity hydrogen production and an effective way to store the excess electrical power. The key dilemma for efficient large-scale production of hydrogen by splitting of water via the hydrogen and oxygen evolution reactions (HER and OER, respectively) is the high overpotential required, especially for the OER. We report an exceptionally active and durable OER catalyst yielding current densities of 500 and 1000 mA cm-2 at overpotentials of only 259 mV and 289 mV in alkaline electrolyte, respectively, fulfilling the commercial criteria of the OER process. Together with a good HER catalyst, we have achieved the commercially required current densities of 500 and 1000 mA cm-2 at 1.586 and 1.657 V, respectively, with very good stability, dramatically lower than any previously reported voltage. This discovery sets the stage for large-scale hydrogen production by water splitting using excess electrical power whenever and wherever available. © 2018 The Royal Society of Chemistry.
英文关键词	Catalysts; Current density; Electrolysis; Electrolytes; Oxygen; Solar energy; Solar power generation; Waste heat; Alkaline electrolytes; Electrical power; High current densities; Large scale hydrogen production; Large scale productions; Oxygen evolution reaction; Splitting waters; Water splitting; Hydrogen production; catalyst; chemical reaction; electrical power; electricity; electrokinesis; electrolyte; energy efficiency; hydrogen
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/190120
作者单位	Department of Physics, TcSUH, University of Houston, Houston, TX 77204, United States; Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control, Ministry of Education, School of Physics and Electronics, Hunan Normal University, Changsha, 410081, China; Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, United States; College of Physical Science and Technology, Central China Normal University, Wuhan, 430079, China
推荐引用方式 GB/T 7714	Zhou H.,Yu F.,Zhu Q.,et al. Water splitting by electrolysis at high current densities under 1.6 volts[J],2018,11(10).
APA	Zhou H..,Yu F..,Zhu Q..,Sun J..,Qin F..,...&Ren Z..(2018).Water splitting by electrolysis at high current densities under 1.6 volts.Energy & Environmental Science,11(10).
MLA	Zhou H.,et al."Water splitting by electrolysis at high current densities under 1.6 volts".Energy & Environmental Science 11.10(2018).