High Oxide Ion Conduction in Molten Na2W2O7

doi:10.1002/aelm.201800352

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	High Oxide Ion Conduction in Molten Na2W2O7
	Xu, JG ; Li, YC ; Wang, JH ; Bao, HL ; Wang, JQ ; Zhu, CL ; Ye, LT ; Xie, K ; Kuang, XJ
刊名	ADVANCED ELECTRONIC MATERIALS
	2018
卷号	4 期号:12 页码:-
关键词	TEMPERATURE CARBONATE DIFFUSION IMPEDANCE
ISSN号	2199-160X
DOI	10.1002/aelm.201800352
文献子类	期刊论文
英文摘要	Recently, oxide ion transport in molten electrolytes has attracted increased attention, and molten electrolytes based on Bi2O3, V2O5 and TeO2 oxides have shown excellent oxide ion conductivity and thus possess great potential as electrochemical energy materials. A new concept of molten oxide fuel cells (MOFCs) is proposed as a promising energy technology that can work in the intermediate temperature range of 500-800 degrees C, complementary to solid oxide fuel cells (SOFCs). Here, oxide ion transport in molten Na2W2O7 is presented, with a recorded oxide ion conductivity of approximate to 0.015 S cm(-1) at 750 degrees C and delivered power density of 121 mW cm(-2) as a MOFC electrolyte operating at 750 degrees C supported by an insulating Al2O3 matrix. This represents a significant advance to the MOFC output compared with the only previous performance reported (11.5 mW cm(-2)) achieved using a molten TeO2-based electrolyte. The W L-3-edge extended X-ray absorption fine structure spectra suggests that the disordered coordination-number-variable WO4+x mixed polyhedral network plays an important role in the oxide ion conduction in the molten Na2W2O7. These results emphasize a great opportunity to exploit oxide ion conductors within the molten oxide family, which can bring a brighter prospect to the MOFCs.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30965]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Inst Appl Phys, 239 Zhang Heng Rd, Shanghai 201204, Peoples R China 2.Guangxi Univ, Coll Mat Sci & Engn, Guilin Univ Technol,MOE Key Lab New Proc Technol, Key Lab Nonferrous Met Oxide Elect Funct Mat & De, Guilin 541004, Peoples R China 3.Chinese Acad Sci, Key Lab Design & Assembly Funct Nanostruct, Fujian Inst Res Struct Matter, Fuzhou 350002, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Xu, JG,Li, YC,Wang, JH,et al. High Oxide Ion Conduction in Molten Na2W2O7[J]. ADVANCED ELECTRONIC MATERIALS,2018,4(12):-.
APA	Xu, JG.,Li, YC.,Wang, JH.,Bao, HL.,Wang, JQ.,...&Kuang, XJ.(2018).High Oxide Ion Conduction in Molten Na2W2O7.ADVANCED ELECTRONIC MATERIALS,4(12),-.
MLA	Xu, JG,et al."High Oxide Ion Conduction in Molten Na2W2O7".ADVANCED ELECTRONIC MATERIALS 4.12(2018):-.