Functionalization of graphene oxide with naphthalenediimide diamine for high-performance cathode materials of lithium-ion batteries

Abstract

Naphthalenediimide diamine-functionalized graphene oxide exhibited a high specific capacity and good cyclic stability as a cathode material of lithium batteries.

Characterization methods of organic electrode materials

“…The TEM image Fig. 2(i) exhibits the multilayer structure as well, further confirming the ultrathin flakes structure of NDIDA-GO [64]. It is worth noting that organic electrode materials are easily dissolved in conventional liquid electrolytes.…”

“…It can be seen from Fig. 4(a) that the surface area of NDIDA-GO sample is 14.15 m 2 g À1 , the total pore volume is 0.026 cm 3 g À1 and the average pore diameter calculated by BJH method is 24.42 nm, which is caused by the interspaces of the nanosheet shown in the SEM image [64]. As for the composite material C4Q/PPL, whose surface area and pore structure are smaller than that of biomass carbon PPL, demonstrating that organic electrode material C4Q is well immobilized by PPL (Fig.…”

Covalent functionalization of carbon materials with redox-active organic molecules for energy storage

“…GO-NDIDA exhibits a capacity retention of 100% after 50 cycles with the aid of a conjugated linker (aniline). 131 These results suggested that the introduction of a conjugated linker between graphene and redox-active molecules can improve the electrochemical stability. The functionalization of graphene through the amide bond is a better approach for achieving stability in electrochemical reactions.…”

Effect of Graphene Oxide Modified with Organic Amine on the Aging Resistance, Rolling Loss and Wet-Skid Resistance of Solution Polymerized Styrene-Butadiene Rubber

“…In the curve of PPD-G, there were many small peaks between the 2θ of about 15-30, indicated that GO was exfoliated to some extent and PPD formed small polymeric crystallites on the GO sheets [36]. The intensity ratio (ID/IG) of the D-peak to G-peak of the Raman spectra of graphene is commonly used to characterize the defect density of graphene [37][38][39][40]. In the Raman spectra of GO and PPD-GO (Figure 4), D peak and G peak appeared around 1310 cm −1 and 1580 cm −1 respectively.…”