Journal article
Electrochemically Stable Rechargeable Lithium-Sulfur Batteries with a Microporous Carbon Nanofiber Filter for Polysulfide
Advanced energy materials, v 5(18), pp 1-n/a
23 Sep 2015
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
As a primary component in lithium-sulfur (Li-S) batteries, the separator may require a custom design in order to facilitate electrochemical stability and reversibility. Here, a custom separator with an activated carbon nanofiber (ACNF)-filter coated onto a polypropylene membrane is presented. The entire configuration is comprised of the ACNF filter arranged adjacent to the sulfur cathode so that it can filter out the freely migrating polysulfides and suppress the severe polysulfide diffusion. Four differently optimized ACNF-filter-coated separators have been developed with tunable micropores as an investigation into the electrochemical and engineering design parameters of functionalized separators. The optimized parameters that are verified by electrochemical and microstructural analyses require the coated ACNF filter to possess the following: (i) a porous architecture with abundant micropores, (ii) small micropore sizes, and (iii) high electrical conductivity and effective electrolyte immersion. It is found that the ACNF20-filter-coated separator demonstrates an overall superior boost in the electrochemical utilization (discharge capacity: 1270 mA h g(-1)) and polysulfide retention (capacity fade rate: 0.13% cycle(-1) after 200 cycles). These results show that the modified thin-film-coating technique is a viable approach to designing ultratough ACNF-filter-coated separators with outstanding mechanical strength and flexibility as an advanced component in Li-S cells.
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Details
- Title
- Electrochemically Stable Rechargeable Lithium-Sulfur Batteries with a Microporous Carbon Nanofiber Filter for Polysulfide
- Creators
- Sheng-Heng Chung - The University of Texas at AustinPauline Han - The University of Texas at AustinRicha Singhal - Drexel UniversityVibha Kalra - Drexel UniversityArumugam Manthiram - The University of Texas at Austin
- Publication Details
- Advanced energy materials, v 5(18), pp 1-n/a
- Publisher
- Wiley
- Number of pages
- 12
- Grant note
- DE-SC0005397 / U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering; United States Department of Energy (DOE) 1236466 / Div Of Chem, Bioeng, Env, & Transp Sys; National Science Foundation (NSF); NSF - Directorate for Engineering (ENG)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000362161500006
- Scopus ID
- 2-s2.0-84942984109
- Other Identifier
- 991019167425204721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter