Journal article
A free-standing carbon nanofiber interlayer for high-performance lithium-sulfur batteries
Journal of materials chemistry. A, Materials for energy and sustainability, v 3(8), pp 4530-4538
01 Jan 2015
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Free-standing porous carbon nanofibers with tunable surface area and pore structure have been investigated as an interlayer between the sulfur cathode and the separator to inhibit the shuttling of the intermediate polysulfides in lithium-sulfur (Li-S) batteries. Specifically, the effects of thickness, surface area, and pore size distribution of carbon nanofiber (CNF) interlayers on the performance of Li-S batteries have been studied. The carbon nanofiber interlayer not only reduces the electrochemical resistance but also localizes the migrating polysulfides and traps them, thereby improving the discharge capacity as well as cyclability. It was found that the optimum thickness of the interlayer is a critical factor to achieve good cell performance, in addition to the surface area and pore structure. A high initial discharge capacity of 1549 mA h g(-1) at C/5 rate, which is 92% of the theoretical capacity of sulfur, with 98% average coulombic efficiency and 83% capacity retention after 100 cycles was obtained with a meso-microporous carbon nanofiber interlayer.
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Details
- Title
- A free-standing carbon nanofiber interlayer for high-performance lithium-sulfur batteries
- Creators
- Richa Singhal - Drexel UniversitySheng-Heng Chung - The University of Texas at AustinArumugam Manthiram - The University of Texas at AustinVibha Kalra - Drexel University
- Publication Details
- Journal of materials chemistry. A, Materials for energy and sustainability, v 3(8), pp 4530-4538
- Publisher
- Royal Soc Chemistry
- Number of pages
- 9
- Grant note
- CBET-1236466; CBET-1150528 / National Science Foundation; National Science Foundation (NSF) Seven One Limited
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000349667700051
- Scopus ID
- 2-s2.0-84922767716
- Other Identifier
- 991019167814804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Energy & Fuels
- Materials Science, Multidisciplinary