title: Amylopectin wrapped graphene oxide/sulfur for improved cyclability of lithium-sulfur battery.
abstract: An amylopectin wrapped graphene oxide-sulfur composite was prepared to construct a 3-dimensionally cross-linked structure through the interaction between amylopectin and graphene oxide, for stabilizing lithium sulfur batteries. With the help of this cross-linked structure, the sulfur particles could be confined much better among the layers of graphene oxide and exhibited significantly improved cyclability, compared with the unwrapped graphene oxide-sulfur composite. The effect of the electrode mass loading on electrochemical performance was investigated as well. In the lower sulfur mass loading cells, such as 2 mg cm(-2), both the capacity and the efficiency were obviously better than those of the higher sulfur mass loading cells, such as 6 mg cm(-2).
authors.affiliation: Baker Laboratory, Department of Chemistry and Chemical Biology, Cornell University , Ithaca, New York, 14853, United States.
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhou
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Yingchao
authors.initials: Y
authors.lastname: Yu
authors.forename: Deli
authors.initials: D
authors.lastname: Wang
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Cui
authors.forename: Francis J
authors.initials: FJ
authors.lastname: Disalvo
authors.forename: Héctor D
authors.initials: HD
authors.lastname: Abruña