Nanostructure and Electrochemical Performance of SiGe/Nitrogen-doped Graphene Nanocomposite for Use as Anode Materials for Lithium-ion Batteries

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Thanapat Autthawong
Theeraporn Promanan
Bralee Chayasombat
Thapanee Sarakonsri


Electrochemical batteries are ideal systems to meet the energy storage demand. Lithium-ion batteries (LIBs) are the most essential energy storage and have attracted a plentiful attentiveness in many research and commercial applications. Most researchers have widely investigated on the enhancement of anode materials because of the safety risk issues. Therefore, this research aims to develop the electrochemical performances of nanocomposite anode materials, especially, silicon-germanium/nitrogen-doped graphene (SiGe/NrGO). This nanocomposite was prepared via facile solution route method. Phase analysis of the preparative products showed the composite patterns. The electron microscope images revealed that the Si and Ge nanoparticles were uniformly distributed on NrGO surface. The Si-Ge/NrGO composition delivered the initial capacity of ~650 mAh g-1 and also provided good stability and conductivity after 100 cycles. The experimental results suggested that the NrGO can act as a stabilizer to buffer volume expansion. Consequently, these nanocomposites have the potential to exhibit high capacity and can be substituted for commercial graphite. They could be used as an anode material for the next generation of LIBs.

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Autthawong, T.; Promanan, T.; Chayasombat, B.; Sarakonsri, T. Nanostructure and Electrochemical Performance of SiGe/Nitrogen-Doped Graphene Nanocomposite for Use As Anode Materials for Lithium-Ion Batteries. Microsc. Microanal. Res. 2020, 33, 6-10.
Original Articles


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