Abstract
Graphene materials have attracted significant research interest as anodes in lithium-ion batteries (LIBs). However, their low volumetric capacity and high working voltage limit the energy density and thus hinder their practical applications. In this research, monolayer graphene and MoS2 were prepared by controlled CVD growth processes. Graphene/MoS2 alternately stacked structure (GMASS) was subsequently fabricated by alternately stacking graphene and MoS2 monolayers layer by layer. When evaluated as an anode for LIB, GMASS demonstrates an obviously reduced working voltage compared to monolayer graphene electrodes (1.31 V vs. 1.46 V). And its volumetric capacity is much higher than that of an average graphite anode (1260 mAh cm−3 vs. 461 mAh cm−3). This fundamental research could promote the development of graphene/MoS2 heterostructures for high-energy LIBs.
Original language | English |
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Article number | 121987 |
Journal | Materials Chemistry and Physics |
Volume | 239 |
DOIs | |
Publication status | Published - 1 Jan 2020 |
Externally published | Yes |
Keywords
- CVD growth
- Graphene/MoS heterostructure
- Lithium-ion battery
- Volumetric capacity
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics