Contactless electric–field driven Z-alignment of ceramic nanoparticles in polymer electrolyte to enhance ionic conductivity

Jiyan Liu; Wei Fang; Shuyu Gao; Yuwei Chen; Shaoyun Chen; Chenlong Hu; Shaojun Cai; Zhihong Liu; Xueqing Liu

Materials & Design (Jul 2020)

Contactless electric–field driven Z-alignment of ceramic nanoparticles in polymer electrolyte to enhance ionic conductivity

Jiyan Liu,
Wei Fang,
Shuyu Gao,
Yuwei Chen,
Shaoyun Chen,
Chenlong Hu,
Shaojun Cai,
Zhihong Liu,
Xueqing Liu

Affiliations

Jiyan Liu: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Wei Fang: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Shuyu Gao: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Yuwei Chen: Key Laboratory of Rubber-Plastics, Ministry of Education, Qingdao University of Science & Technology, Qingdao 266042, China
Shaoyun Chen: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Chenlong Hu: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Shaojun Cai: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China
Zhihong Liu: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China; Corresponding author.
Xueqing Liu: Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China; Flexible Display Materials and Technology Co-innovation Centre of Hubei Province, Jianghan University, Wuhan 430056, China; Correspondence to: X. Liu, Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, Jianghan University, Wuhan 430056, China.

Journal volume & issue: Vol. 192
p. 108753

Abstract

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The contactless electric–field accomplishes particles alignment in solution allowing free solvent evaporation without electrochemical decomposition. Herein the nanoparticle Li1+xAlxGe2-x(PO4)3(LAGP) Z-direction (out-of-plane) alignment was driven by a contactless electric field within a cross-linked solid electrolyte of poly(ethylene oxide)/poly(ethylene glycol) diacrylate/lithium bis(trifluoromethylsulfonyl)imide (PEO/PEGDA/LiTFSI). The alignment and chain formation of nanoparticles was verified by scanning electron microscope combining with energy dispersive X-ray spectrometry. Benefiting from this Z-direction alignment, LAGP/PEO/PEGDA/LiTFSI membrane possesses enhanced ionic conductivity and improved flexibility. With 20 wt% LAGP loading, 2.7 times ionic conductivity was achieved in the Z- direction and 1.6 times elongation at breaking was obtained along the membrane surface after alignment. This contactless electrical field method is a new strategy to prepare polymer composite membrane with anisotropic property from solvent-containing system.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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