Optimization of NiFe 2 O 4 /rGO composite electrode for lithium-ion batteries

Abstract

A NiFe2O4/rGO composite wasfabricated via a hydrothermal-annealing method, in which the mean size of spinel NiFe2O4 nanoparticles was around 20 nm. The optimized NiFe2O4/rGO electrode with CMC binder exhibited high reversible capacity, good cycling durability and high-rate capability, whereas the electrode with PVDF binder underwent rapid capacity decay. (a) (b)

Alternative binders for sustainable electrochemical energy storage – the transition to aqueous electrode processing and bio-derived polymers

“…107 A more stable cycling behaviour has been reported for CoFe 2 O 4 electrodes, prepared using alginate rather than PVdF, as a result of the formation of H-bonds as detected via FTIR (Fouriertransform infrared spectroscopy). 108 Similarly, Fe 3 O 4 electrodes made with PAA 109 and NiFe 2 O 4 anodes including arabic gum 110 or CMC 111 outperformed those prepared with PVdF. Aqueous based formulations with a CMC binder were also employed for carbon-coated ZnFe 2 O 4 anodes, and investigated both in half- 112 and full lithium-ion cells with an LiFePO 4 cathode (also including CMC).…”

Morphology Controllable Synthesis of NiO/NiFe2O4 Hetero-Structures for Ultrafast Lithium-Ion Battery

“…Apparently, the S-NFO shows high capacity retention of 92 % after 130 cycles at various current densities (from 1.0 to 20 A g −1 ). Such excellent rate performance outperforms not only P-NFO and L-NFO, but also compete with other NiFe 2 O 4 or NiO electrodes (Park et al, 2015; Yu et al, 2015; Li C. et al, 2017) and some other TMOs/MTMOs hybrids (Zou et al, 2014; Hou L. et al, 2015; Yuan et al, 2015). Detailed rate capability comparison of this S-NFO with other NiFe 2 O 4 and NiO based electrodes is illustrated in Figure 3F.…”

A porous graphene–NiFe2O4nanocomposite with high electrochemical performance and high cycling stability for energy storage applications

“…However, the obtained surface area for our composite material is impressive and surpasses some of the previously reported literature data such as those of the NF/GC composite (43.6 m 2 g À1 ), NF/RGO composite (57.3 m 2 g À1 ), NF/rGO composite (78.4 m 2 g À1 ), NF/GNS composite (92.18 m 2 g À1 ), and NF/MoS 2 composite (45.8 m 2 g À1 ). 20,[29][30][31][32] The obtained pore volume and pore diameter for the 10 PGNF composite is 0.2 cm 3 g À1 and 3.5 nm, respectively.…”