ACS applied materials & interfaces, volume 9, issue 26, pages 21773-21780

Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology

Publication typeJournal Article
Publication date2017-06-22
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor9.5
ISSN19448244, 19448252
General Materials Science
Abstract
Composite polymer solid electrolytes (CPEs) containing ceramic fillers embedded inside a polymer-salt matrix show great improvements in Li+ ionic conductivity compared to the polymer electrolyte alone. Lithium lanthanum zirconate (Li7La3Zr2O12, LLZO) with a garnet-type crystal structure is a promising solid Li+ conductor. We show that by incorporating only 5 wt % of the ceramic filler comprising undoped, cubic-phase LLZO nanowires prepared by electrospinning, the room temperature ionic conductivity of a polyacrylonitrile-LiClO4-based composite is increased 3 orders of magnitude to 1.31 × 10-4 S/cm. Al-doped and Ta-doped LLZO nanowires are also synthesized and utilized as fillers, but the conductivity enhancement is similar as for the undoped LLZO nanowires. Solid-state nuclear magnetic resonance (NMR) studies show that LLZO NWs partially modify the PAN polymer matrix and create preferential pathways for Li+ conduction through the modified polymer regions. CPEs with LLZO nanoparticles and Al2O3 nanowire fillers are also studied to elucidate the role of filler type (active vs passive), LLZO composition (undoped vs doped), and morphology (nanowire vs nanoparticle) on the CPE conductivity. It is demonstrated that both intrinsic Li+ conductivity and nanowire morphology are needed for optimal performance when using 5 wt % of the ceramic filler in the CPE.

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Yang T. et al. Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology // ACS applied materials & interfaces. 2017. Vol. 9. No. 26. pp. 21773-21780.
GOST all authors (up to 50) Copy
Yang T., Zheng J., Cheng Q., HU Y., Chan C. K. Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology // ACS applied materials & interfaces. 2017. Vol. 9. No. 26. pp. 21773-21780.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acsami.7b03806
UR - https://doi.org/10.1021/acsami.7b03806
TI - Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology
T2 - ACS applied materials & interfaces
AU - Yang, Ting
AU - Chan, Candace K.
AU - Zheng, Jin
AU - Cheng, Qian
AU - HU, Yan-Yan
PY - 2017
DA - 2017/06/22 00:00:00
PB - American Chemical Society (ACS)
SP - 21773-21780
IS - 26
VL - 9
SN - 1944-8244
SN - 1944-8252
ER -
BibTex |
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BibTex Copy
@article{2017_Yang,
author = {Ting Yang and Candace K. Chan and Jin Zheng and Qian Cheng and Yan-Yan HU},
title = {Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology},
journal = {ACS applied materials & interfaces},
year = {2017},
volume = {9},
publisher = {American Chemical Society (ACS)},
month = {jun},
url = {https://doi.org/10.1021/acsami.7b03806},
number = {26},
pages = {21773--21780},
doi = {10.1021/acsami.7b03806}
}
MLA
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MLA Copy
Yang, Ting, et al. “Composite Polymer Electrolytes with Li7La3Zr2O12 Garnet-Type Nanowires as Ceramic Fillers: Mechanism of Conductivity Enhancement and Role of Doping and Morphology.” ACS applied materials & interfaces, vol. 9, no. 26, Jun. 2017, pp. 21773-21780. https://doi.org/10.1021/acsami.7b03806.
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