MoS2/Graphene Composite Paper for Sodium-Ion Battery Electrodes
【China Molybdenum Industry News Network】
The research appears in the latest issue of the journal ACS-NANO in the article "MoS2/graphene composite paper for sodium-ion battery electrodes."
For the last two years the researchers have been developing new methods for quick and cost-effective synthesis of atomically thin two-dimensional materials — graphene, molybdenum and tungsten disulfide — in gram quantities, particularly for rechargeable battery applications.
For the latest research, the engineers created a large-area composite paper that consisted of acid-treated layered molybdenum disulfide and chemically modified graphene in an interleaved structured. The research marks the first time that such a flexible paper electrode was used in a sodium-ion battery as an anode that operates at room temperature. Most commercial sodium-sulfur batteries operate close to 300 degrees Celsius, Singh said.
Singh said the research is important for two reasons:
Synthesis of large quantities of single or few-layer-thick 2-D materials is crucial to understanding the true commercial potential of materials such as transition metal dichalcogenides, or TMD, and graphene.
Fundamental understanding of how sodium is stored in a layered material through mechanisms other than the conventional intercalation and alloying reaction. In addition, using graphene as the flexible support and current collector is crucial for eliminating the copper foil and making lighter and bendable rechargeable batteries. In contrast to lithium, sodium supplies are essentially unlimited and the batteries are expected to be a lot cheaper.
other than the conventional intercalation and alloying reaction. In addition, using graphene as the flexible support and current collector is crucial for eliminating the copper foil and making lighter and bendable rechargeable batteries. In contrast to lithium, sodium supplies are essentially unlimited and the batteries are expected to be a lot cheaper.
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