One-Dimensional Carbon-Sulfur Composite Fibers for Na-S Rechargeable Batteries Operating at Room Temperature

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Na-S batteries are one type of molten salt battery and have been used to support stationary energy storage systems for several decades. Despite their successful applications based on long cycle lives and low cost of raw materials, Na-S cells require high temperatures above 300 degrees C for their operations, limiting their propagation into a wide range of applications. Herein, we demonstrate that Na-S cells with solid state active materials can perform well even at room temperature when sulfur-containing carbon composites generated from a simple thermal reaction were used as sulfur positive electrodes. Furthermore, this structure turned out to be robust during repeated (de)sodiation for similar to 500 cycles and enabled extraordinarily high rate performance when one-dimensional morphology is adopted using scalable electrospinning processes. The current study suggests that solid-state Na-S cells with appropriate atomic configurations of sulfur active materials could cover diverse battery applications where cost of raw materials is critical.
Publisher
AMER CHEMICAL SOC
Issue Date
2013-09
Language
English
Article Type
Article
Keywords

LITHIUM BATTERIES; CATHODE MATERIALS; ENERGY-STORAGE; HIGH-CAPACITY; ION BATTERIES; SODIUM; PERFORMANCE; DISCHARGE; NANOFIBERS; CHALLENGES

Citation

NANO LETTERS, v.13, no.9, pp.4532 - 4538

ISSN
1530-6984
DOI
10.1021/nl402513x
URI
http://hdl.handle.net/10203/187079
Appears in Collection
EEW-Journal Papers(저널논문)
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