Influences of morphology and structure on Mn-based multi-step thermochemical H2O splitting cycle

doi:10.1016/j.solener.2015.12.051

	Influences of morphology and structure on Mn-based multi-step thermochemical H2O splitting cycle
	Jiang, Zongxuan 1; Chen, Zhenpan 1,2; Jiang, Qingqing 1; Tong, Jinhui 1; Yang, Min 1; Li, Can 1
刊名	SOLAR ENERGY
	2016-05-01
卷号	129 页码:236-243
关键词	Solar Energy Multi-step H2o Splitting Hydrogen Manganese Ferrite
ISSN号	0038-092X
DOI	10.1016/j.solener.2015.12.051
文献子类	Article
英文摘要	The multi-step thermochemical water splitting cycle based on MnFe2O4 Na2CO3 has emerged as an attractive process due to its relatively low reaction temperature. The main challenges are how to enhance its H-2/O-2 release rates and capacities. Herein, a series of MnFe2O4 with different microstructures synthesized by hydrothermal method were tested in H2O splitting reaction. It was found that MnFe2O4 samples with smaller particle size and fine crystallinity exhibited higher H-2 production which was benefit from enhanced intimate contact between homogeneous particles and better ionic transport within fine crystals. In order to enhance the reaction kinetics of the O-2 release reaction, a hydrolysis treatment was introduced to the multi-step cycle. As a result, the lamellar structure of Na+ extracted Na1-x(Mn1/3Fe2/3)O-2 oxide became unstable and collapsed into cubic MnFe2O4 spinel structure more easily under heating, a structure characteristic suitable for O-2 release reaction. Compared to direct O-2 release reaction between layered Na(Mn1/3Fe2/3)O-2 oxide and CO2, the hydrolysis treatment lead to much faster reaction rate. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词	OXYGEN-RELEASING STEP ; HYDROGEN-PRODUCTION ; MNFE2O4-NA2CO3 SYSTEM ; MAGNETIC-PROPERTIES ; MANGANESE FERRITE ; KINETIC-ANALYSIS ; CO2 ; OXIDES ; DISSOCIATION ; ENHANCEMENT
WOS研究方向	Energy & Fuels
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000373866800022
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170724]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Li, Can
作者单位	1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Zongxuan,Chen, Zhenpan,Jiang, Qingqing,et al. Influences of morphology and structure on Mn-based multi-step thermochemical H2O splitting cycle[J]. SOLAR ENERGY,2016,129:236-243.
APA	Jiang, Zongxuan,Chen, Zhenpan,Jiang, Qingqing,Tong, Jinhui,Yang, Min,&Li, Can.(2016).Influences of morphology and structure on Mn-based multi-step thermochemical H2O splitting cycle.SOLAR ENERGY,129,236-243.
MLA	Jiang, Zongxuan,et al."Influences of morphology and structure on Mn-based multi-step thermochemical H2O splitting cycle".SOLAR ENERGY 129(2016):236-243.