Amylopectin Wrapped Graphene Oxide/Sulfur for Improved Cyclability of Lithium-Sulfur Battery.

ACS nano

PubMedID: 24007262

Zhou W, Chen H, Yu Y, Wang D, Cui Z, Disalvo FJ, Abruña HD. Amylopectin Wrapped Graphene Oxide/Sulfur for Improved Cyclability of Lithium-Sulfur Battery. ACS Nano. 2013;.
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 2mg cm-2, both of the capacity and efficiency were obviously better than those of the higher sulfur mass loading cells, such as 6mg cm-2.