Hollow reduced graphene oxide microspheres as a high-performance anode material for Li-ion batteries

Preparation of re-constructed carbon nanosheet powders and their efficient lithium-ion storage mechanism

“…The re-CNSs650 and re-CNSs800 exhibit lower initial capacities but higher capacity retentions (53.9% and 60.4%, respectively). The above results can be attributed to the aggregation of re-CNSs during cycling, which gradually limits the de-intercalation of lithium-ions [23]. As shown in Figure 2, most of the re-CNSs particles exhibit irregular plane structure.…”

“…1c and Fig. 1d), which is quite different from traditional two-dimensional carbon nanosheets and previous hollow spheres [22,23].…”

“…Therefore, in the spray drying process, most of spray droplets are volatilized so rapidly that the dried droplets tend to form sheets. The characteristic peaks of the re-CNSs500 located at 24.0° and 43.0°correspond to (002) and (100), respectively [23]. In addition, the broad peak also indicates poor ordering of the re-CNSs along their stacking direction and indicates that their framework is composed of the stacked graphene-like nanosheets and that some residual functional groups may exist in their structure.…”

NiO-Co 3 O 4 nanoplate composite as efficient anode in Li-ion battery

“…[1][2][3][4] To meet the increasing demands for high energy and power density, the transition-metal oxides have been greatly exploited as the alternative anode materials for LIBs because of their higher theoretical specific capacities (e.g. > 600 mA h g -1 ) than that of conventional graphite anode (e.g.…”

Binder-free combination of large area reduced graphene oxide nanosheets with Cu foil for lithium ion battery anode

“…Reduced graphene oxide (RGO) nanosheets generally form during the incomplete reduction of GO into graphene and thus inevitably contain with tiny residual oxygen-containing functional groups and lattice defects, which may be beneficial for additional active sites to storage Li + . Similarly, RGO have also been considered as the preferable candidate anode active material for LIB [5][6][7][8][9][10].…”