Exploring the correlation between MoS 2 nanosheets and 3D graphene-based nanostructures for reversible lithium storage

Citation data:

Applied Surface Science, ISSN: 0169-4332, Vol: 459, Page: 98-104

Publication Year:
2018
Mentions 1
Blog Mentions 1
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/24424
DOI:
10.1016/j.apsusc.2018.07.027
Author(s):
Son, Yoonkook; Lee, Jung-Soo; Choi, Min; Son, Yeonguk; Park, Noejung; Ko, Minseong; Jang, Ji-Hyun; Park, Minjoon
Publisher(s):
Elsevier BV; ELSEVIER SCIENCE BV
Tags:
Materials Science; graphene; MoS2; battery; nanostructure; lithium storage; anode
Most Recent Blog Mention
article description
Graphene-based materials are an attractive lithium storage material for next-generation lithium-based batteries due to its high capacity, surface area and conductivity. However, one of the major problems for its broad application in batteries is a large irreversible capacity, and the poor cycle stability and low rate capability remain. Here, we report a MoS 2 -stabilized hierarchical three-dimensional graphene-based nanostructure, in which the MoS 2 layer acts as a stabilizer as well as an active material. We show that the presence of MoS 2 thin layer adjacent to the graphene surface can improve lithium storage capability by improving lithium ion diffusion property with fast Li-ion transport kinetic. On the basis of experimental and theoretical approaches, we ascribe the improved reversible lithium storage to the unusual reversible Li-MoS 2 redox reaction and charge distribution on the graphene and MoS 2 interlayers. These findings will provide a potential new direction in the design of electrode materials for advanced lithium storage technologies.