快离子导体
碱金属
分析化学(期刊)
材料科学
离子
X射线晶体学
中子衍射
X射线光电子能谱
剥离(纤维)
离子交换
化学计量学
结晶学
离子电导率
电解质
化学
晶体结构
衍射
物理化学
电极
核磁共振
复合材料
有机化学
物理
光学
色谱法
作者
Anand Parejiya,Rachid Essehli,Ruhul Amin,Jue Liu,Nitin Muralidharan,Harry M. Meyer,David L. Wood,Ilias Belharouak
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2021-01-08
卷期号:6 (2): 429-436
被引量:20
标识
DOI:10.1021/acsenergylett.0c02513
摘要
Here we report dual ion conduction capability of Na-based NASICON type super ion conductor materials using Na1+xMnx/2Zr2–x/2(PO4)3 (NMZP) as a candidate system. This method enables the use of Na-based NASICON material family in both Na as well as Li all solid-state batteries (SSBs). NZMPs with x = 1.5 and x = 2 showed the highest room-temperature conductivities of 2.86 × 10–5 and 2.82 × 10–5 S cm–1, respectively. Crystallographic analysis using neutron diffraction revealed that conductivities observed in these materials are related to the variations in the Na–O bond length and the concentration of mobile sodium content. Using galvanostatic plating and stripping tests, we show that these NMZPs boast good cycling stability against both Na and Li metals, which also reveals dual ion conduction. Mechanistic investigations through post-mortem SEM/EDS and XPS characterizations of the alkali metal and the cycled NMZPs confirm that the Na–Li ion-exchange occurs readily in these materials when electrochemically cycled.
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