Intermetallic Ni₃Sn₄-based graphene@carbon hybrid composites for lithium-ion batteries

Abstract

Summary In this paper, nanosized Ni3Sn4 nanoparticles were synthesized by chemical reduction technique. A facile strategy is also developed to synthesize the yolk‐shell Ni3Sn4 nanoparticles decorated between the layers of multilayer graphene to obtain high‐capacity, long service life with comparable cost Li‐ion batteries. Ni3Sn4 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 Ni3Sn4/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 Ni3Sn4/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.

Hierarchical Zn1.67 Mn1.33 O4 /graphene nanoaggregates as new anode material for lithium-ion batteries

“…Thus, the electrochemical reaction of Li with the prepared ZMO500 sample was investigated by cyclic voltammetry (CV) and galvanostatic cycling. Furthermore, the ZMO500 composite electrode (ZMO‐G500), prepared by the incorporation of graphene nanosheets (GNS), exhibited enhanced reversible capacity and cycle retention as a result of its more efficient electron transport paths and stress relaxation …”

“…Furthermore, the ZMO500 composite electrode (ZMO-G500), prepared by the incorporation of graphene nanosheets (GNS), exhibited enhanced reversible capacity and cycle retention as a result of its more efficient electron transport paths and stress relaxation. 42,43 2 | EXPERIMENTAL PROCEDURES…”

Nickel cobalt oxide nanowires‐modified hollow carbon tubular bundles for high‐performance sodium‐ion hybrid capacitors

“…Batteries have been broadly applied for communication devices and new energy vehicles because of the environmental friendliness and high energy density . For lithium ion batteries (LIBs), the tremendous demand for lithium results in its unavailability . Thus, exploring affordable and sustainable energy storage devices is extremely important.…”

Novel graphene-based transparent electrodes for perovskite solar cells

“…The outstanding performance of SnO 2 electron transport layers is attributed to the excellent properties of nanocrystalline SnO 2 films, such as good reflection, suitable band edge position, and high electron mobility. The SnO 2 electron selective layer-based perovskite solar cells showed higher short-circuit current density and lower open-circuit voltage, fill factor, and conversion efficiency than the conventional TiO 2 electron selective layer-based perovskite solar cells as demonstrated by Qingshun et al 12 Similarly, many researchers reported different methods for preparation of SnO 2 nanosheets 20 and ZnO-SnO 2 nanocomposites 21 for application in perovskite solar cells whereas SnO 2 /graphene composite 22 for lithium-ion batteries 23 and different graphene-based electrodes for dye-sensitized solar cells. 16,[24][25][26] Inthepresentexperimentalwork,transparentelectrodes based on SnO 2 -graphene with different compositions have been prepared through redox reaction.…”

“…Similarly, many researchers reported different methods for preparation of SnO 2 nanosheets and ZnO‐SnO 2 nanocomposites for application in perovskite solar cells whereas SnO 2 /graphene composite for lithium‐ion batteries and different graphene‐based electrodes for dye‐sensitized solar cells …”