Functionalized graphene-based cathode for highly reversible lithium-sulfur batteries.
In this article, we highlight the salient issues in the development of lithium-sulfur battery (LSB) cathodes, present different points of view in solving them, and argue, why in the future, functionalized graphene or graphene oxide might be the ultimate solution towards LSB commercialization. As shown by previous studies and also in our recent work, functionalized graphene and graphene oxide enhance the reversibility of the charge-discharge process by trapping polysulfides in the oxygen functional groups on the graphene surface, thus minimizing polysulfide dissolution. This will be helpful for the rational design of new cathode structures based on graphene for LSBs with minimal capacity fading, low extra cost, and without the unnecessary weight increase caused by metal/metal oxide additives.
Electrochemical Reaction and Technology Laboratory, School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712 (South Korea).
Jin Won
JW
Kim
Joey D
JD
Ocon
Dong-Won
DW
Park
Jaeyoung
J
Lee
D004553:Electric Conductivity; D011211:Electric Power Supplies; D004566:Electrodes; D004867:Equipment Design; D006108:Graphite / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry*
D013455:Sulfur; D006108:Graphite; D008094:Lithium
batteries; graphene oxide; lithium; reversibility; sulfur