期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 50, 页码 46746-46755出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b15371
关键词
liquid crystalline graphene oxide; MoS2 powders; flexible electrodes; high mass loading; lithium-ion batteries
资金
- Australian Research Council Centre of Excellence Scheme (ACES) [CE 140100012]
- CSC scholarship from the Ministry of Education of People's Republic of China
- ARC [DE180100215]
- Australian Research Council [DE180100215] Funding Source: Australian Research Council
Freestanding flexible electrodes with high areal mass loading are required for the development of flexible high-performance lithium-ion batteries (LIBs). Currently they face the challenge of low mass loading due to the limited concentrations attainable in processable dispersions. Here, we report a simple low-temperature hydrothermal route to fabricate flexible layered molybdenum disulfide (MoS2)/reduced graphene oxide (MSG) films offering high areal capacity and good lithium storage performance. This is achieved using a self-assembly process facilitated by the use of liquid crystalline graphene oxide (LCGO) and commercial MoS2 powders at a low temperature of 70 degrees C. The amphiphilic properties of ultralarge LCGO nanosheets facilitates the processability of large-size MoS2 powders, which is otherwise nondispersible in water. The resultant film with an areal mass of 8.2 mg cm(-2) delivers a high areal capacity of 5.80 mAh cm(-2) (706 mAh g(-1)) at 0.1 A g(-1). This simple method can be adapted to similar nondispersible commercial battery materials for films fabrication or production of more complicated constructs via advanced fabrication technologies.
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