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DOI	10.1039/c8ee00050f
	The use of poly-cation oxides to lower the temperature of two-step thermochemical water splitting
	Zhai S.; Rojas J.; Ahlborg N.; Lim K.; Toney M.F.; Jin H.; Chueh W.C.; Majumdar A.
发表日期	2018
ISSN	17545692
起始页码	2172
结束页码	2178
卷号	11 期号:8
英文摘要	We report the discovery of a new class of oxides-poly-cation oxides (PCOs)-that consist of multiple cations and can thermochemically split water in a two-step cycle to produce hydrogen (H2) and oxygen (O2). Specifically, we demonstrate H2 yields of 10.1 ± 0.5 mL-H2 per g and 1.4 ± 0.5 mL-H2 per g from (FeMgCoNi)Ox (x ≈ 1.2) with thermal reduction temperatures of 1300 °C and 1100 °C, respectively, and also with background H2 during the water splitting step. Remarkably, these capacities are mostly higher than those from measurements and thermodynamic analysis of state-of-the-art materials such as (substituted) ceria and spinel ferrites. Such high-performance two-step cycles ≤1100 °C are practically relevant for today's chemical infrastructure at large scale, which relies almost exclusively on thermochemical transformations in this temperature regime. It is likely that PCOs with complex cation compositions will offer new opportunities for both fundamental investigations of redox thermochemistry as well as scalable H2 production using infrastructure-compatible chemical systems. © 2018 The Royal Society of Chemistry.
英文关键词	Cerium oxide; Cobalt compounds; Iron compounds; Magnesium compounds; Nickel compounds; Positive ions; Temperature; Thermoanalysis; Chemical infrastructure; Chemical systems; Temperature regimes; Thermal reduction; Thermo dynamic analysis; Thermo-chemical water splitting; Thermo-chemically; Thermochemical transformations; Hydrogen production; cation; ferrite; hydrogen; low temperature; measurement method; performance assessment; temperature effect; thermochemistry
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/190170
作者单位	Department of Mechanical Engineering, Stanford University, Stanford, CA 94305, United States; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States; Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea; Precourt Institute for Energy, Stanford University, Stanford, CA 94305, United States; Stanford Institute of Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States
推荐引用方式 GB/T 7714	Zhai S.,Rojas J.,Ahlborg N.,et al. The use of poly-cation oxides to lower the temperature of two-step thermochemical water splitting[J],2018,11(8).
APA	Zhai S..,Rojas J..,Ahlborg N..,Lim K..,Toney M.F..,...&Majumdar A..(2018).The use of poly-cation oxides to lower the temperature of two-step thermochemical water splitting.Energy & Environmental Science,11(8).
MLA	Zhai S.,et al."The use of poly-cation oxides to lower the temperature of two-step thermochemical water splitting".Energy & Environmental Science 11.8(2018).