High performance solid polymer electrolyte with graphene oxide nanosheets

Abstract

Two dimensional graphene oxide (GO) sheets with high surface area and excellent mechanical properties are introduced into a solid polyethylene oxide/lithium salt electrolyte.

Flexible thin-film battery based on graphene-oxide embedded in solid polymer electrolyte

“…[31][32][33][34][35][36][37][38][39][40][41][42] Polymer electrolytes offer many advantages including enhanced safety, flexibility, stretchabil-ity, higher thermal and electrochemical stability, and thin film manufacturability. [49][50][51] The electrically insulating properties of GO fillers in PEO have also been previously verified. 10 −7 to 10 −8 S cm −1 ).…”

“…29,30 Development of high performance flexible solid polymer electrolytes (SPEs) for LIBs has been a major research focus over the past few decades. [44][45][46][47][48] Among the filler types, graphene oxide nanosheets have recently been reported, including our previous work by Ardebili and co-workers, 49 to significantly improve the ion conductivity and thermo-mechanical properties of polymer electrolytes. 31 The main challenge associated with SPEs is their poor ionic conductivity especially at room temperature (i.e.…”

Effect of polyethylene glycol-grafted graphene on the non-isothermal crystallization kinetics of poly(ethylene oxide) and poly(ethylene oxide):lithium perchlorate electrolyte systems

“…It is supposed that it may not only attributed to the good interactions between FGnP and PEO chains and steric hindrance to reduce the chain mobility and order, but also could relate to the interactions between FGnP and lithium salt which facilitates the dissociation of ions to produce more free ions. Recently, it has been reported that oxygen containing groups on GO surface have good affinity toward Li + cations, resulting in the higher dissociation of lithium salt [35,51]. There is no big difference for α parameter in neat samples and nanocomposites, indicating that combined Avrami-Ozawa method successfully could describe the non-isothermal process of PEO, SPE and their nanocomposites.…”

“…Graphene oxide (GO) and other functionalized GOs, containing many functional groups which disrupts the hexagonal lattice of carbon atoms. As a consequence, they show insulating properties, make them susceptible to be used in solid polymer electrolytes to improve the ionic conductivity and mechanical properties [35,36]. It is of crucial interest to understand how functionalized GO could influence crystallization structure and crystallization kinetics of PEO in PEO based SPEs.…”

Recent Advancements in Polymer-Based Composite Electrolytes for Rechargeable Lithium Batteries

“…In particular, large enhancements in the physical and chemical properties of diverse composites have been reported even with the slight addition of 2D nanomaterials as functional nano-fillers, being ascribed to the exceptionally large interactive surface areas of 2D nanomaterials which can provide efficient interfacial interactions with polymer matrixes [169,170]. In one example, Yuan et al [171] took advantage of the desirable properties of 2D single-atomic-thickness graphene oxide (GO), with its ultra-large surface area and excellent mechanical and electrical insulating properties, and used it as a filler to fabricate a solid PEO-LiClO 4 -GO polymer nanocomposite electrolyte (Fig. 8a).…”