Journal article
How Does Nanoscale Crystalline Structure Affect Ion Transport in Solid Polymer Electrolytes?
Macromolecules, v 47(12), pp 3978-3986
24 Jun 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Polymer electrolytes have attracted intensive attention due to their potential applications in all-solid-state lithium batteries. Ion conduction in this system is generally considered to be confined in the amorphous polymer/ion phase, where segmental relaxation of the polymer above glass transition temperature facilitates ion transport. In this article, we show quantitatively that the effect of polymer crystallization on ion transport is twofold: structural (tortuosity) and dynamic (tethered chain confinement). We decouple these two effects by designing and fabricating a model polymer single crystal electrolyte system with controlled crystal structure, size, crystallinity, and orientation. Ion conduction is confined within the chain fold region and guided by the crystalline lamellae. We show that, at low content, due to the tortuosity effect, the in-plane conductivity is 2000 times greater than through-plane one. Contradictory to the general view, the dynamic effect is negligible at moderate ion contents. Our results suggest that semicrystalline polymer is a valid system for practical polymer electrolytes design.
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Details
- Title
- How Does Nanoscale Crystalline Structure Affect Ion Transport in Solid Polymer Electrolytes?
- Creators
- Shan Cheng - Drexel UniversityDerrick M. Smith - Drexel UniversityChristopher Y. Li - Drexel University
- Publication Details
- Macromolecules, v 47(12), pp 3978-3986
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 9
- Grant note
- 1334067 / Div Of Civil, Mechanical, & Manufact Inn; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG) NSF GRFP; National Science Foundation (NSF); NSF - Office of the Director (OD) DMR-1308958; CMMI-1334067 / National Science Foundation; National Science Foundation (NSF) NSF IGERT; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000338089400025
- Scopus ID
- 2-s2.0-84903168838
- Other Identifier
- 991019168740204721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Polymer Science