Alkali metal azides can be used as starting materials for the synthesis of polymeric nitrogen, a potential material of high energy density. In this letter, we report the ionic transport behavior in sodium azide under high pressure by in situ impedance spectroscopy and density functional theory calculations. The ionic transportation consists of ion transfer and Warburg diffusion processes. The ionic migration channels and barrier energy were given for the high-pressure phases. The enhanced ionic conductivity of the γ phase with pressure is because of the formation of space charge regions in the grain boundaries. This ionic conduction and grain boundary effect in NaN3 under pressures could shed light on the better understanding of the conduction mechanism of alkali azides and open up an area of research for polymeric nitrogen in these compounds and other high-energy-density polynitrides.
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23 April 2018
Research Article|
April 25 2018
Ionic conduction in sodium azide under high pressure: Experimental and theoretical approaches
Qinglin Wang;
Qinglin Wang
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
2
State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University
, Changchun 130012, China
3
Department of Mechanical Engineering, Texas Tech University
, Lubbock, Texas 79409, USA
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Yanzhang Ma
;
Yanzhang Ma
3
Department of Mechanical Engineering, Texas Tech University
, Lubbock, Texas 79409, USA
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Dandan Sang;
Dandan Sang
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
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Xiaoli Wang;
Xiaoli Wang
a)
4
School of Physics and Electronic Engineering, Linyi University
, Linyi 276005, China
a)Authors to whom correspondence should be addressed: wxl@lyu.edu.cn, cailong_liu@jlu.edu.cn, and cc060109@qq.com
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Cailong Liu
;
Cailong Liu
a)
2
State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University
, Changchun 130012, China
a)Authors to whom correspondence should be addressed: wxl@lyu.edu.cn, cailong_liu@jlu.edu.cn, and cc060109@qq.com
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Haiquan Hu;
Haiquan Hu
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
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Wenjun Wang;
Wenjun Wang
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
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Bingyuan Zhang;
Bingyuan Zhang
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
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Quli Fan;
Quli Fan
1
School of Physical Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University
, Liaocheng 252059, China
5
Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications
, Nanjing 210046, China
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Yonghao Han
;
Yonghao Han
2
State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University
, Changchun 130012, China
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Chunxiao Gao
Chunxiao Gao
a)
2
State Key Laboratory of Superhard Materials and Institute of Atomic and Molecular Physics, Jilin University
, Changchun 130012, China
a)Authors to whom correspondence should be addressed: wxl@lyu.edu.cn, cailong_liu@jlu.edu.cn, and cc060109@qq.com
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a)Authors to whom correspondence should be addressed: wxl@lyu.edu.cn, cailong_liu@jlu.edu.cn, and cc060109@qq.com
Appl. Phys. Lett. 112, 173903 (2018)
Article history
Received:
March 11 2018
Accepted:
April 15 2018
Citation
Qinglin Wang, Yanzhang Ma, Dandan Sang, Xiaoli Wang, Cailong Liu, Haiquan Hu, Wenjun Wang, Bingyuan Zhang, Quli Fan, Yonghao Han, Chunxiao Gao; Ionic conduction in sodium azide under high pressure: Experimental and theoretical approaches. Appl. Phys. Lett. 23 April 2018; 112 (17): 173903. https://doi.org/10.1063/1.5028468
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