气候变化领域集成服务门户(CCPortal): BaCe0.25Mn0.75O3-: δ - promising perovskite-type oxide for solar thermochemical hydrogen production

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DOI	10.1039/c8ee01989d
	BaCe0.25Mn0.75O3-: δ - promising perovskite-type oxide for solar thermochemical hydrogen production
	Barcellos R.D.; Sanders M.D.; Tong J.; McDaniel A.H.; O'Hayre R.P.
发表日期	2018
ISSN	17545692
起始页码	3256
结束页码	3265
卷号	11 期号:11
英文摘要	Solar-thermal based hydrogen production technologies employing two-step metal oxide water-splitting cycles are emerging as a viable approach to renewable and sustainable solar fuels. However, materials innovations that overcome thermodynamic constraints native to the current class of solar-thermal water splitting oxides are required to increase solar utilization and process efficiency. Lowering oxide thermal reduction temperature while maintaining high water-splitting favorability are important ways to enhance such performance metrics. Recent attention to perovskite-type oxides as an alternative to ceria, which is widely viewed as the state-of-the art redox material, is driven by demonstrated thermodynamic and structural tuning derived through engineered composition. Here we discuss the unique properties of BaCe0.25Mn0.75O3 (BCM) within the context of thermochemical water splitting materials. Firstly, BCM is a novel example of a line compound with B-site substitution of Mn by Ce. It also exhibits a polymorph phase transition during thermal reduction and yields nearly 3× more H2 than ceria when reduced at lower temperature (1350 °C). More importantly, BCM exhibits faster oxidation kinetics and higher water-splitting favorability than SrxLa1-xMnyAl1-yO3 (x, y = 0.4, 0.6), which is a well-studied and popular Mn-based perovskite formulation. The unique properties manifested by BCM through engineered composition offer new pathways towards unlocking higher performing materials for solar thermochemical water splitting. © The Royal Society of Chemistry 2018.
英文关键词	Aluminum compounds; Barium compounds; Cerium oxide; Lanthanum compounds; Manganese compounds; Manganese removal (water treatment); Metals; Perovskite; Phase transitions; Solar heating; Solar power generation; Strontium compounds; Hydrogen production technology; Materials innovations; Performance metrics; Perovskite type oxides; Solar thermo-chemical hydrogen; Thermo-chemical water splitting; Thermodynamic constraints; Water splitting cycles; Hydrogen production; cesium; hydrogen; low temperature; manganese; oxidation; perovskite; phase transition; reaction kinetics; reduction; solar power; thermodynamics
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/190065
作者单位	Colorado School of Mines, Department of Metallurgical and Materials Engineering, Golden, CO, United States; Clemson University, Clemson, Materials Science and EngineeringSC, United States; Sandia National Laboratories, Combustion Research Facility, Livermore, CA, United States
推荐引用方式 GB/T 7714	Barcellos R.D.,Sanders M.D.,Tong J.,et al. BaCe0.25Mn0.75O3-: δ - promising perovskite-type oxide for solar thermochemical hydrogen production[J],2018,11(11).
APA	Barcellos R.D.,Sanders M.D.,Tong J.,McDaniel A.H.,&O'Hayre R.P..(2018).BaCe0.25Mn0.75O3-: δ - promising perovskite-type oxide for solar thermochemical hydrogen production.Energy & Environmental Science,11(11).
MLA	Barcellos R.D.,et al."BaCe0.25Mn0.75O3-: δ - promising perovskite-type oxide for solar thermochemical hydrogen production".Energy & Environmental Science 11.11(2018).