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MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries
The incorporation of highly polarized inorganic compounds in functional separators is expected to alleviate the high temperature safety- and performance-related issues for promising lithium–sulfur batteries. In this work, a unique Co(3)O(4) polyhedral coating on thermal-stable polyimide (PI) separat...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915487/ https://www.ncbi.nlm.nih.gov/pubmed/31698837 http://dx.doi.org/10.3390/nano9111574 |
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author | Zhou, Zhenfang Li, Yue Fang, Tingting Zhao, Yufeng Wang, Qingjie Zhang, Jiujun Zhou, Zhongfu |
author_facet | Zhou, Zhenfang Li, Yue Fang, Tingting Zhao, Yufeng Wang, Qingjie Zhang, Jiujun Zhou, Zhongfu |
author_sort | Zhou, Zhenfang |
collection | PubMed |
description | The incorporation of highly polarized inorganic compounds in functional separators is expected to alleviate the high temperature safety- and performance-related issues for promising lithium–sulfur batteries. In this work, a unique Co(3)O(4) polyhedral coating on thermal-stable polyimide (PI) separators was developed by a simple one-step low-temperature calcination method utilizing metal-organic framework (MOF) of Co-based zeolitic-imidazolate frameworks (ZIF-Co) precursors. The unique Co(3)O(4) polyhedral structures possess several structural merits including small primary particle size, large pore size, rich grain boundary, and high ionic conductivity, which endow the ability to adequately adsorb dissolved polysulfides. The flexible-rigid lithium-lanthanum-zirconium oxide-poly(ethylene oxide) (LLZO-PEO) coating has been designed on another side of the polyimide non-woven membranes to inhibit the growth of lithium dendrites. As a result, the as-fabricated Co(3)O(4)/polyimide/LLZO-PEO (Co(3)O(4)/PI/LLZO) composite separators displayed fair dimensional stability, good mechanical strength, flame retardant properties, and excellent ionic conductivity. More encouragingly, the separator coating of Co(3)O(4) polyhedrons endows Li–S cells with unprecedented high temperature properties (tested at 80 °C), including rate performance 620 mAh g(−1) at 4.0 C and cycling stability of 800 mAh g(−1) after 200 cycles—much better than the state-of-the-art results. This work will encourage more research on the separator engineering for high temperature operation. |
format | Online Article Text |
id | pubmed-6915487 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69154872019-12-24 MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries Zhou, Zhenfang Li, Yue Fang, Tingting Zhao, Yufeng Wang, Qingjie Zhang, Jiujun Zhou, Zhongfu Nanomaterials (Basel) Article The incorporation of highly polarized inorganic compounds in functional separators is expected to alleviate the high temperature safety- and performance-related issues for promising lithium–sulfur batteries. In this work, a unique Co(3)O(4) polyhedral coating on thermal-stable polyimide (PI) separators was developed by a simple one-step low-temperature calcination method utilizing metal-organic framework (MOF) of Co-based zeolitic-imidazolate frameworks (ZIF-Co) precursors. The unique Co(3)O(4) polyhedral structures possess several structural merits including small primary particle size, large pore size, rich grain boundary, and high ionic conductivity, which endow the ability to adequately adsorb dissolved polysulfides. The flexible-rigid lithium-lanthanum-zirconium oxide-poly(ethylene oxide) (LLZO-PEO) coating has been designed on another side of the polyimide non-woven membranes to inhibit the growth of lithium dendrites. As a result, the as-fabricated Co(3)O(4)/polyimide/LLZO-PEO (Co(3)O(4)/PI/LLZO) composite separators displayed fair dimensional stability, good mechanical strength, flame retardant properties, and excellent ionic conductivity. More encouragingly, the separator coating of Co(3)O(4) polyhedrons endows Li–S cells with unprecedented high temperature properties (tested at 80 °C), including rate performance 620 mAh g(−1) at 4.0 C and cycling stability of 800 mAh g(−1) after 200 cycles—much better than the state-of-the-art results. This work will encourage more research on the separator engineering for high temperature operation. MDPI 2019-11-06 /pmc/articles/PMC6915487/ /pubmed/31698837 http://dx.doi.org/10.3390/nano9111574 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhou, Zhenfang Li, Yue Fang, Tingting Zhao, Yufeng Wang, Qingjie Zhang, Jiujun Zhou, Zhongfu MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title | MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title_full | MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title_fullStr | MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title_full_unstemmed | MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title_short | MOF-Derived Co(3)O(4) Polyhedrons as Efficient Polysulfides Barrier on Polyimide Separators for High Temperature Lithium–Sulfur Batteries |
title_sort | mof-derived co(3)o(4) polyhedrons as efficient polysulfides barrier on polyimide separators for high temperature lithium–sulfur batteries |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915487/ https://www.ncbi.nlm.nih.gov/pubmed/31698837 http://dx.doi.org/10.3390/nano9111574 |
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