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Sulfur Nanodots Stitched in 2D 'Bubble-Like' Interconnected Carbon Fabric as Reversibility-Enhanced Cathodes for Lithium–Sulfur Batteries
- Source :
- ACS Nano. 11:4694-4702
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The behavior of two-dimensional (2D) materials for energy storage systems relates to their morphology and physicochemical properties. Although various 2D materials can be found in different fields, the open access of these materials has greatly hampered their practical applications, such as in lithium-sulfur (Li-S) batteries, where the soluble intermediates should be controlled. Here, we have developed a facile approach to prepare 2D ultrathin interconnected carbon fabrics (ICFs) with "bubble-like" morphology and abundant mesopores using a "blowing bubble" method. Serving as independent meso-sized rooms, nanosulfur dots can be stitched in 2D "bubble-like" ICF, which afford a short electron-/ion-transfer path and thus is beneficial to high reversible capacity. Encapsulated with reduced graphene oxide, a binder-free/free-standing cathode was constructed for advanced Li-S batteries. In addition, the specific energy of a pouch Li-S battery with this interconnected cathode can be achieved to 1.55 Ah@315.98 Wh/kg at 0.1 C. These results suggest that the design of "bubble-like" interconnected porous carbon fabrics and their integration with reduced graphene oxide provide a facile strategy to enhance the electrochemical activity of S and have the potential to be applied to other semiconductors or insulating materials for a wide range of applications.
- Subjects :
- Battery (electricity)
Materials science
Graphene
General Engineering
Oxide
General Physics and Astronomy
Nanotechnology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Cathode
Energy storage
0104 chemical sciences
law.invention
chemistry.chemical_compound
chemistry
law
Specific energy
General Materials Science
Nanodot
0210 nano-technology
Mesoporous material
Subjects
Details
- ISSN :
- 1936086X and 19360851
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- ACS Nano
- Accession number :
- edsair.doi.dedup.....4cf1c7fd8436c0e9f629ff07f25579a4