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Intermetallic Ni 3 Sn 4 ‐based graphene@carbon hybrid composites for lithium‐ion batteries
Author(s) -
Guler Mehmet Oguz,
Guzeler Mustafa,
Guler Aslihan,
Nalci Deniz,
Duman Seyma Ozcan,
Singil Mustafa Mahmut,
Alkan Engin,
Dogan Mucahit,
Akbulut Hatem
Publication year - 2018
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4040
Subject(s) - graphene , materials science , anode , composite number , electrode , lithium (medication) , nanoparticle , composite material , scanning electron microscope , chemical engineering , electrochemistry , nanotechnology , chemistry , medicine , endocrinology , engineering
Summary In this paper, nanosized Ni 3 Sn 4 nanoparticles were synthesized by chemical reduction technique. A facile strategy is also developed to synthesize the yolk‐shell Ni 3 Sn 4 nanoparticles decorated between the layers of multilayer graphene to obtain high‐capacity, long service life with comparable cost Li‐ion batteries. Ni 3 Sn 4 nanoparticles in the form of yolk‐shell morphology were synthesized between 30 and 130 nm in size and homogeneously anchored on graphene layers as spacers preventing the layers merging after vacuum filtration. The characterization of the as‐synthesized composite electrodes was performed by scanning electron microscopy and X‐ray diffraction methods. As an anode electrode, yolk‐shell Ni 3 Sn 4 /graphene composite electrodes revealed a stable capacity of 324.5 mAh g −1 after 250 cycles, indicating that the composites might have a promising future application in Li‐ion batteries. The results have shown that unique yolk‐shell Ni 3 Sn 4 /graphene hybrid composite structure shows extraordinary electrochemical performance with superior reversible capacity and improved cyclic performance, indicating that the stacking of the active electrode nanoparticles between the graphene layers is a good method for maximum specific capacity outputs.