Voltammetric Enhancement of Li-Ion Conduction in Al-Doped Li7–xLa3Zr2O12 Solid Electrolyte
In: The Journal of Physical Chemistry C, Jg. 121 (2017-07-19), S. 15565-15573
Online
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Zugriff:
Al-doped Li7–xLa3Zr2O12 is found to be more ionically conductive following voltammetric treatment in an all-solid-state Li|Li7–xLa3Zr2O12|Li cell configuration. This result is consistent with electrical impedance spectroscopy measurements, which reveal that the activation energy for lithium diffusion is reduced from 0.32 to 0.26 eV following voltammetric treatment. The Li deposition–dissolution signal has been observed in the voltammograms, and neutron powder diffraction shows an increase in the lithium content of the Li7–xLa3Zr2O12. Furthermore, X-ray photoelectron spectroscopy indicates a local rearrangement of O, resulting in a reduction of defects following voltammetric treatment, with the enhanced conductivity attributable to both the reduction of defect oxygen and increased lithium content. This work, therefore, reveals such voltammetric treatment as a simple and inexpensive alternative to existing doping approaches to boost the electrochemical performance of Li7–xLa3Zr2O12. The findings can improve...
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Voltammetric Enhancement of Li-Ion Conduction in Al-Doped Li7–xLa3Zr2O12 Solid Electrolyte
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Autor/in / Beteiligte Person: | Yu Ting Chen ; Wei Kong Pang ; Sheu, Hwo-Shuenn ; Chang, Ho ; Jena, Anirudha ; Liu, Ru-Shi ; Peterson, Vanessa K. |
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Zeitschrift: | The Journal of Physical Chemistry C, Jg. 121 (2017-07-19), S. 15565-15573 |
Veröffentlichung: | American Chemical Society (ACS), 2017 |
Medientyp: | unknown |
ISSN: | 1932-7455 (print) ; 1932-7447 (print) |
DOI: | 10.1021/acs.jpcc.7b04004 |
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