Highly flexible reduced graphene oxide@polypyrrole–polyethylene glycol foam for supercapacitors

Abstract

A flexible and free-standing 3D reduced graphene oxide@polypyrrole–polyethylene glycol (RGO@PPy–PEG) foam was developed for wearable supercapacitors.

Tribological properties of graphene oxide and polyethylene glycol composites under dry friction and oil lubrication conditions

“…Further looking at Figure 8c, it can be found that there is almost no wear scratches on the ball surface under oil lubrication. The results show that GO‐PEG solid lubrication film has good friction and wear properties under oil lubrication or dry friction conditions 4,35 . As shown in Figure S4, Figure S4(a) shows the light mirror photo of wear and scratches on the disc surface under the condition of dry friction after a long time of tribological experiments.…”

“…The results show that GO-PEG solid lubrication film has good friction and wear properties under oil lubrication or dry friction conditions. 4,35 As shown in Figure S4, Figure S4 (a) shows the light mirror photo of wear and scratches on the disc surface under the condition of dry friction after a long time of tribological experiments. It can be found that there are obvious wear marks on the surface of the disc, but there is no direct contact between the two metals, and the friction coefficient is also small.…”

Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

“…Figure 9(d) shows the long-term average friction coefficient of aluminum alloy sample treated by MAO and MAO–GO–PVA composite film under oil lubrication condition. From the figure, we can clearly observe the variation pattern of friction coefficient (Benetti and Spencer, 2019; Cai et al. , 2020).…”

“…Figure 9(d) shows the long-term average friction coefficient of aluminum alloy sample treated by MAO and MAO-GO-PVA composite film under oil lubrication condition. From the figure, we can clearly observe the variation pattern of friction coefficient(Benetti and Spencer, 2019;Cai et al, 2020).As shown in Figure10, the photos of the surface of the ball sample in tribology experiments conducted at 10 N, 1 Hz, 1 h and oil lubrication are shown. As shown in Figure10, the photos of ball-sample surface wear marks corresponding to MAO aluminum alloy under dry friction conditions are shown.…”

Ternary 3D reduced graphene oxide/Ni0.5Zn0.5Fe2O4/polyindole nanocomposite for supercapacitor electrode application

“…Further, this leads to improved electrode/electrolyte contact areas and high rates of electrode reaction. 58 The CV profile includes the comparison for GN1 and GN2 electrodes at the scan rate of 10 mV s −1 with varying concentrations of NZF nanoparticles in RGO hydrogel. It is notable from the CV study that, GN2 shows the highest capacitive property where the synergism between RGO hydrogel and NZF nanoparticle is maximum and hence, it was used for further study.…”