Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)(3) superionic conductor by spark plasma sintering for enhanced ionic conductivity

doi:10.1016/j.nanoen.2018.06.050

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	Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)(3) superionic conductor by spark plasma sintering for enhanced ionic conductivity
	Duan, SS ; Jin, HY ; Yu, JX ; Esfahani, EN ; Yang, B 4; Liu, JL ; Ren, YZ ; Chen, Y ; Lu, LH ; Tian, XC
刊名	NANO ENERGY
	2018-09-01
卷号	51 页码:19-25
关键词	Solid state electrolytes Li1.4Al0.4Ti1.6(PO4)(3) Non-equilibrium microstructure Spark plasma sintering
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2018.06.050
英文摘要	In solid-state electrolytes, the large resistance at grain boundaries remains the bottleneck for high ionic conductivity. Here we develop an alternative and somewhat counterintuitive strategy to enhance their ionic conductivity via non-equilibrium microstructure. Using Li1.4Al0.4Ti1.6(PO4)(3) as an example, we demonstrate that semi-crystalline interphase between well crystallized ceramic phase and amorphous glass phase can be induced by spark plasma sintering, resulting in total ionic conductivity of 1.3 x 10(-3) S cm(-1) without any doping, which is 2 orders of magnitude higher than that derived by the conventional method. It is further demonstrated that the non-equilibrium structure is stable in ambient condition, yet can be converted into equilibrium structure by annealing with higher crystallinity but much lower ionic conductivity, proving that the non-equilibrium structure is indeed the key to the high performance. This opens door for its applications in electric vehicles, and the strategy is applicable to other ionic systems as well.
学科主题	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
WOS记录号	WOS:000440682100003
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79991]
专题	金属研究所_中国科学院金属研究所
作者单位	1.China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Nanobiomech, Shenzhen 518055, Peoples R China 3.Xiangtan Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China 4.Univ Washington, Dept Mech Engn, Seattle, WA 98195 USA 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Duan, SS,Jin, HY,Yu, JX,et al. Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)(3) superionic conductor by spark plasma sintering for enhanced ionic conductivity[J]. NANO ENERGY,2018,51:19-25.
APA	Duan, SS.,Jin, HY.,Yu, JX.,Esfahani, EN.,Yang, B.,...&Li, JY.(2018).Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)(3) superionic conductor by spark plasma sintering for enhanced ionic conductivity.NANO ENERGY,51,19-25.
MLA	Duan, SS,et al."Non-equilibrium microstructure of Li1.4Al0.4Ti1.6(PO4)(3) superionic conductor by spark plasma sintering for enhanced ionic conductivity".NANO ENERGY 51(2018):19-25.