A fluorophosphate glass–ceramic electrolyte with superior ionic conductivity and stability for Na-ion batteries

2015 ◽  
Vol 3 (34) ◽  
pp. 17558-17562 ◽  
Author(s):  
Yiwen Ni ◽  
Ruilin Zheng ◽  
Xiaowen Tan ◽  
Weiyan Yue ◽  
Peng Lv ◽  
...  

A new fluorophosphate (Na2O + NaF)–TiO2–B2O3–P2O5–ZrF4 (NTBPZ) glass and glass–ceramic have Na-ion conductivities up to 7 × 10−9 S cm−1 and 3 × 10−5 S cm−1, respectively. Na-ion conductivity improves due to formation of conductive phase NaTi2(PO4)3.

Ionics ◽  
2019 ◽  
Vol 25 (9) ◽  
pp. 4179-4188
Author(s):  
Shyam Sundar Gandi ◽  
Suman Gandi ◽  
Venkata Rao Madduluri ◽  
Naresh Kumar Katari ◽  
Dimple P. Dutta ◽  
...  

RSC Advances ◽  
2014 ◽  
Vol 4 (33) ◽  
pp. 17120-17123 ◽  
Author(s):  
Naoto Tanibata ◽  
Kousuke Noi ◽  
Akitoshi Hayashi ◽  
Masahiro Tatsumisago

Glass–ceramic electrolyte in the system Na3PS4–Na4SiS4 exhibits a high Na+ ion conductivity of 7.4 × 10−4 S cm−1 at 25 °C.


2021 ◽  
Author(s):  
Ruixue Zhang ◽  
Wanying Zhao ◽  
Zhenzhen Liu ◽  
Shanghai Wei ◽  
Yigang Yan ◽  
...  

In situ formed amorphous LiBH4·1/2NH3 on the surface of Al2O3 nanoparticles results in an enhanced ion conductivity of 1.1 × 10−3 S cm−1 at room temperature.


Ionics ◽  
2021 ◽  
Vol 27 (5) ◽  
pp. 2017-2025
Author(s):  
Nikolas Schiffmann ◽  
Ethel C. Bucharsky ◽  
Karl G. Schell ◽  
Charlotte A. Fritsch ◽  
Michael Knapp ◽  
...  

AbstractLithium aluminum titanium phosphate (LATP) is known to have a high Li-ion conductivity and is therefore a potential candidate as a solid electrolyte. Via sol-gel route, it is already possible to prepare the material at laboratory scale in high purity and with a maximum Li-ion conductivity in the order of 1·10−3 s/cm at room temperature. However, for potential use in a commercial, battery-cell upscaling of the synthesis is required. As a first step towards this goal, we investigated whether the sol-gel route is tolerant against possible deviations in the concentration of the precursors. In order to establish a possible process window for sintering, the temperature interval from 800 °C to 1100 °C and holding times of 10 to 480 min were evaluated. The resulting phase compositions and crystal structures were examined by X-ray diffraction. Impedance spectroscopy was performed to determine the electrical properties. The microstructure of sintered pellets was analyzed by scanning electron microscopy and correlated to both density and ionic conductivity. It is shown that the initial concentration of the precursors strongly influences the formation of secondary phases like AlPO4 and LiTiOPO4, which in turn have an influence on ionic conductivity, densification behavior, and microstructure evolution.


Author(s):  
Bo Fan ◽  
Wenzhi Li ◽  
Zhongkuan Luo ◽  
Xianghua Zhang ◽  
Hongli Ma ◽  
...  

2021 ◽  
Vol 168 (2) ◽  
pp. 020526
Author(s):  
Adrian Grant ◽  
Lazbourne Allie ◽  
Devon Lyman ◽  
Kenechukwu Nwabufoh ◽  
Eleston Maxie ◽  
...  

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