气候变化领域集成服务门户(CCPortal): Crystalline nickel manganese antimonate as a stable water-oxidation catalyst in aqueous 1.0 M H2SO4

CCPortal

DOI	10.1039/c7ee01486d
	Crystalline nickel manganese antimonate as a stable water-oxidation catalyst in aqueous 1.0 M H2SO4
	Moreno-Hernandez I.A.; Macfarland C.A.; Read C.G.; Papadantonakis K.M.; Brunschwig B.S.; Lewis N.S.
发表日期	2017
ISSN	17545692
起始页码	2103
结束页码	2108
卷号	10 期号:10
英文摘要	Water oxidation is a required half-reaction for electrochemical water splitting. To date, the only well-established active oxygen-evolution catalysts stable under operating conditions and at rest in acidic aqueous media contain Ru or Ir, two of the scarcest non-radioactive elements on Earth. We report herein a nickel-manganese antimonate electrocatalyst with a rutile-type crystal structure that requires an initial voltammetric overpotential of 672 ± 9 mV to catalyze the oxidation of water to O2(g) at a rate corresponding to 10 mA cm-2 of current density when operated in contact with 1.0 M sulfuric acid. Under galvanostatic control, the overpotential initially rose from 670 mV but was then stable at 735 ± 10 mV for 168 h of continuous operation at 10 mA cm-2. We additionally provide an in-depth evaluation of the stability of the nickel-manganese antimonate electrocatalyst, including elemental characterization of the surface, bulk, and electrolyte before and after electrochemical operation. © The Royal Society of Chemistry.
英文关键词	Catalysts; Crystal structure; Electrocatalysts; Electrolytes; Ionization of gases; Iridium; Nickel; Oxidation; Oxide minerals; Radioactive elements; Ruthenium; Continuous operation; Depth evaluations; Galvanostatic control; Half reactions; Operating condition; Water oxidation; Water oxidation catalysts; Water splitting; Manganese; catalyst; chemical compound; crystal structure; Earth; electrochemical method; electrochemistry; electrolyte; manganese; oxidation; stibnite; water
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/190409
作者单位	Division of Chemistry and Chemical Engineering, California Institute of Technology, 127-72, Pasadena, CA 91125, United States; Beckman Institute Molecular Materials Research Center, California Institute of Technology, Pasadena, CA 91125, United States; Kavli Nanoscience Institute, California Institute of Technology, Pasadena, United States
推荐引用方式 GB/T 7714	Moreno-Hernandez I.A.,Macfarland C.A.,Read C.G.,et al. Crystalline nickel manganese antimonate as a stable water-oxidation catalyst in aqueous 1.0 M H2SO4[J],2017,10(10).
APA	Moreno-Hernandez I.A.,Macfarland C.A.,Read C.G.,Papadantonakis K.M.,Brunschwig B.S.,&Lewis N.S..(2017).Crystalline nickel manganese antimonate as a stable water-oxidation catalyst in aqueous 1.0 M H2SO4.Energy & Environmental Science,10(10).
MLA	Moreno-Hernandez I.A.,et al."Crystalline nickel manganese antimonate as a stable water-oxidation catalyst in aqueous 1.0 M H2SO4".Energy & Environmental Science 10.10(2017).