TY - JOUR
T1 - High Mass-Loading Sulfur-Composite Cathode for Lithium-Sulfur Batteries
AU - Baikalov, Nurzhan
AU - Serik, Nurassyl
AU - Kalybekkyzy, Sandugash
AU - Kurmanbayeva, Indira
AU - Bakenov, Zhumabay
AU - Mentbayeva, Almagul
N1 - Funding Information:
The authors thank the Shared Facility of Nazarbayev University for access to laboratory equipment. Funding. This work was supported by the Faculty development competitive research grant #080420FD1906 from Nazarbayev University and by the State Target Program #BR05236524 from the Ministry of Education and Science of the Republic of Kazakhstan.
Publisher Copyright:
© Copyright © 2020 Baikalov, Serik, Kalybekkyzy, Kurmanbayeva, Bakenov and Mentbayeva.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/10/6
Y1 - 2020/10/6
N2 - This research aimed to increase the mass loading of sulfur in the composite electrode in order to increase the energy density of the lithium-sulfur (Li-S) cell. This requires designing the electrode with the use of conductive agents to maintain the conductivity of the sulfur composite. Therefore, the composite of sulfur with polyacrylonitrile (PAN) and carbon nanotubes (CNT) was synthesized by heating. Following that, the mass loading of sulfur was increased by using several layers of carbon fiber paper (CFP) with a large free space as a three-dimensional current collector. As a result of the heat treatment and formation of covalent bonding between pyrolyzed PAN and sulfur, uniform distribution and enhanced conductivity were achieved, while CNT maintained structural integrity, acting as an interwoven network. Due to these advantages, the mass loading of sulfur was increased up to 5 mg cm–2 while maintaining a high initial specific capacity of 1400 mAh g–1 and stable cyclability.
AB - This research aimed to increase the mass loading of sulfur in the composite electrode in order to increase the energy density of the lithium-sulfur (Li-S) cell. This requires designing the electrode with the use of conductive agents to maintain the conductivity of the sulfur composite. Therefore, the composite of sulfur with polyacrylonitrile (PAN) and carbon nanotubes (CNT) was synthesized by heating. Following that, the mass loading of sulfur was increased by using several layers of carbon fiber paper (CFP) with a large free space as a three-dimensional current collector. As a result of the heat treatment and formation of covalent bonding between pyrolyzed PAN and sulfur, uniform distribution and enhanced conductivity were achieved, while CNT maintained structural integrity, acting as an interwoven network. Due to these advantages, the mass loading of sulfur was increased up to 5 mg cm–2 while maintaining a high initial specific capacity of 1400 mAh g–1 and stable cyclability.
KW - 3D current collector
KW - carbon fiber paper
KW - composite cathode
KW - lithium-sulfur battery
KW - mass loading
UR - http://www.scopus.com/inward/record.url?scp=85093365561&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85093365561&partnerID=8YFLogxK
U2 - 10.3389/fenrg.2020.00207
DO - 10.3389/fenrg.2020.00207
M3 - Article
AN - SCOPUS:85093365561
VL - 8
JO - Frontiers in Energy Research
JF - Frontiers in Energy Research
SN - 2296-598X
M1 - 207
ER -