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DOI	10.1039/c8ee03676d
	Crystalline nickel, cobalt, and manganese antimonates as electrocatalysts for the chlorine evolution reaction
	Moreno-Hernandez I.A.; Brunschwig B.S.; Lewis N.S.
发表日期	2019
ISSN	17545692
起始页码	1241
结束页码	1248
卷号	12 期号:4
英文摘要	The chlorine-evolution reaction (CER) is a common, commercially valuable electrochemical reaction, and is practiced at industrial scale globally. A precious metal solid solution of RuO2 or IrO2 with TiO2 is the predominant electrocatalyst for the CER. Herein we report that materials comprised only of non-precious metal elements, specifically crystalline transition-metal antimonates (TMAs) such as NiSb2Ox, CoSb2Ox, and MnSb2Ox, are moderately active, stable catalysts for the electrochemical oxidation of chloride to chlorine under conditions relevant to the commercial chlor-alkali process. Specifically, CoSb2Ox exhibited a galvanostatic potential of 1.804 V vs. NHE at 100 mA cm-2 of Cl2(g) production from aqueous pH = 2.0, 4.0 M NaCl after 250 h of operation. Studies of the bulk and surface of the electrocatalyst and the composition of the electrolyte before and after electrolysis indicated minimal changes in the surface structure and intrinsic activity of CoSb2Ox as a result of Cl2(g) evolution under these conditions. © 2019 The Royal Society of Chemistry.
英文关键词	Chlorine; Cobalt; Crystalline materials; Electrocatalysts; Electrochemical oxidation; Electrolytes; Iridium compounds; Manganese; Nickel; Precious metals; Ruthenium compounds; Sodium chloride; Surface structure; Titanium dioxide; Chlor-alkali process; Chlorine evolution; Crystalline transition; Electrochemical reactions; Intrinsic activities; Metal solid solutions; Non-precious metals; Stable catalysts; Antimony compounds; antimony; catalysis; catalyst; chemical composition; chemical reaction; chlorine; cobalt; electrochemical method; electrokinesis; electrolyte; manganese; nickel; oxidation; precious metal; solid solution
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/189941
作者单位	Division of Chemistry and Chemical Engineering, 127-72, California Institute of Technology, 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, CA 91125, United States
推荐引用方式 GB/T 7714	Moreno-Hernandez I.A.,Brunschwig B.S.,Lewis N.S.. Crystalline nickel, cobalt, and manganese antimonates as electrocatalysts for the chlorine evolution reaction[J],2019,12(4).
APA	Moreno-Hernandez I.A.,Brunschwig B.S.,&Lewis N.S..(2019).Crystalline nickel, cobalt, and manganese antimonates as electrocatalysts for the chlorine evolution reaction.Energy & Environmental Science,12(4).
MLA	Moreno-Hernandez I.A.,et al."Crystalline nickel, cobalt, and manganese antimonates as electrocatalysts for the chlorine evolution reaction".Energy & Environmental Science 12.4(2019).