Ultra-small Fe2O3 nanoparticles anchored on ultrasonically exfoliated multilayer graphene for LIB anode application

Uniform Fe2O3Nanospheres Anchored on Multilayer Graphene as Anode Materials for High‐Rate Ni−Fe Batteries

“…75–1621), meaning that MLG still maintains an integral layer structure of graphite. More characterization of MLG with SEM, TEM, XPS, AFM in our previous publications [32–35] showed that MLG consists of about 10 graphitic layers with a very low oxidation degree. No other peaks are found for all samples, indicating the high purity of these composites.…”

“…The crystalline phases of UL-Fe 2 O 3 /MLG samples were analyzed by XRD. As shown in Figure 1, the peaks at 24 [32][33][34][35] showed that MLG consists of about 10 graphitic layers with a very low oxidation degree. No other peaks are found for all samples, indicating the high purity of these composites.…”

“…For comparison, FeCl 2 was also used as a raw material to synthesize uniform small Fe 2 O 3 (US‐Fe 2 O 3 ) nanoparticles on MLG. The detailed synthesis process has been presented in our earlier publication [32] . Briefly, 100 mg of FeCl 2 ⋅ 4H 2 O, 20 μL of ethanol and 200 mg of sodium acetate were added in the suspension of 20 mg of MLG in 8 mL of DMF and 2 mL of H 2 O.…”

“…High electrical conductivity can be maintained because no oxidative treatment was applied on them. In our previous work, very small Fe 2 O 3 nanoparticles were synthesized on MLG with a chemical bath deposition method by using FeCl 2 as a precursor, [32] which showed high performance as anode material of lithium ion battery. However, when tested as an anode of NiÀ Fe batteries, its specific capacity and rate performance were unsatisfactory.…”

Nanowires-Assembled TiO2 Nanorods Anchored on Multilayer Graphene for High-Performance Anodes of Lithium-Ion Batteries

“…Another shortage of graphite anode is the lithium plating that easily occurs due to the low operation potential, which will cause a serious safety issue [ 5 , 6 ]. Recently, anode materials based on different lithiation mechanisms including insertion, alloying, and conversion were researched [ 7 , 8 , 9 , 10 , 11 ]. As a kind of insertion-type anode material, titanium dioxide (TiO 2 ) has many particular advantages due to its high theoretical specific capacity (336 mAh g −1 ), high reversible cyclic stability, and relatively high operational potential.…”