rGO Content Research Articles

Polyanionic electrically conductive superabsorbent hydrogel based on sodium alginate-g-poly (AM-co-ECA-co-AMPS): Broadband dielectric spectroscopy investigations

In this study, the dielectric behavior of polyanionic electrically conductive superabsorbent hydrogel based on sodium alginate-g-poly(AM-co-ECA-co-AMPS) was investigated by broadband dielectric spectroscopy (BDS). The dielectric spectra obtained from −70 to 70 °C showed a superposition of three distinctive processes, electrode polarization, charge carrier's transport, and a molecular relaxation process. These dynamic processes were further analyzed along with the effect of both temperature and reduced graphene oxide (rGO) content. The development of a clear electrochemical double layer (ECDL) at the electrode/hydrogel interface strongly supports its possible application in supercapacitors' forms of energy storage. TGA, DSC, rheology, and electrochemical properties were studied. Furthermore, when the composite hydrogel with rGO content of 2.5 % was assembled into a symmetric supercapacitor, it displayed a specific capacitance of 756 F.g−1 at 1 A.g−1 and 704 F.g−1 after 5000 cycles with high capacitance retention of 93.2 %. The superior conductivity and porous structure of the rGO composite hydrogel are credited with the hydrogel's excellent electrochemical capabilities.

Reduced graphene oxide-ferrite microcomposites based on petung bamboo (dendrocalamus asper) charcoal and iron sand as lightweight microwave absorbing materials

Reduced graphene oxide-ferrite (rGO/Fe3O4) microcomposites as lightweight microwave absorbing materials has been successfully synthesized from petung bamboo and iron sand by mechanical mixing method at different rGO content (0:1, 1:0, 1:1, 1:2, 1:3, 2:1 and 3:1 wt%). Reduced graphene oxide as dielectric material was synthesized from petung bamboo charcoal using carbonization method and ferrite as magnetic material was synthesized from iron sand using extraction-milling method. Structural characterization by x-ray Fluorosence, Fourier Transform Infrared, Vibrating Sample Magnetometry, x-ray Diffraction, Scanning Electron Microscopy proved that micrometer sized reduced graphene oxide ferrite in the microcomposites was responsible for the ferromagnetic behavior of the composites. The reflection loss of microcomposites measured in the microwave frequency range of 8–12 GHz using a Vector Network Analyzer. The results showed that at the micro scale, rGO had a higher absorption power with maximum reflection loss (RL m ) value of −21.81 dB at matching frequency (f m ) 10.85 GHz compared with Fe3O4 (RL m value of −9.25 dB at f m = 10.60 GHz) at thickness of 1 mm. The rGO/Fe3O4 (2:1 wt%) microcomposites microwave absorber shows the optimum absorption with maximum reflection loss value of −16.51 dB at matching frequency (f m ) 10.74 GHz at thickness of 1 mm. The use of natural materials and the controlled rGO/Fe3O4 microcomposites structure with simple synthesis methods, which the urgent need for developing high performance lightweight microwave abrsorbing materials and are environmentally friendly.

Bridge-graphene connecting polymer composite with a distinctive segregated structure for simultaneously improving electromagnetic interference shielding and flame-retardant properties

With the development of modern electronic technology, there is an urgent demand for the fabrication of multifunctional composites with electromagnetic interference (EMI) shielding and flame-retardant properties. Herein, a novel microcapsule structure is formulated by modifying the hydrophilicity of polypropylene (PP) micro-powder surface and wrapped with graphene oxide to modulate the distribution state of multi-walled carbon nanotubes (MWCNTs). The modified PP/reduced graphene oxide/MWCNTs (mPP/RGO/MWCNTs) composite with a distinctive segregated structure is obtained by hot-pressing of the microencapsulated PP micro-powder. The influence of the contents of MWCNTs and RGO on composite’s EMI shielding and flame-retardant properties are further investigated. Interestingly, the results show remarkable synergistic effect between MWCNTs and RGO, enhancing the electrical conductivity and EMI shielding property of the composites. Moreover, the segregated structure of mPP/RGO/MWCNTs composite enhances EMI shielding and flame-retardant properties compared with pure PP and mPP/MWCNTs. Therefore, this work provides new insights into the rational design of EMI shielding polymer composite with segregated structures to realize high EMI shielding performances and good flame-retardant properties.

Facile fabrication of polystyrene particles/graphene composites for improved dielectric and thermal properties

ABSTRACTIn this paper, polystyrene (PS)-based reduced graphene oxide (rGO) composites were prepared by mixing PS latex particles with graphene oxide (GO) and the following in-situ reduction. The structure and morphology of PS/rGO composites were characterized, and the effects of rGO content on the dielectric properties as well as thermal stability of PS/rGO composites were investigated. Results showed that rGO sheets armoured on the surface of PS particles and exhibited well dispersion in the PS matrix after hot compression. The introduction of rGO improved the dielectric properties of the composites remarkably. When rGO content was 0.12 vol%, the dielectric permittivity and breakdown strength of PS/rGO arrived at 6.3 at102 Hz and 107 kV/mm, with 50% and 35.4% enhancement compared to the pristine PS. Furthermore, PS/rGO presented better thermal stability than the pristine PS, but the overlapping of rGO sheets in PS matrix induced the instability of dielectric loss with frequency.

Graphene/carbonyl iron powder composite microspheres enhance electromagnetic absorption of 3D printing composites

The RGO-CIP composite microspheres were prepared by solvent evaporation method using ethyl cellulose as the backbone and epoxy resin as the adhesive. The composite microspheres effectively combined graphene (RGO) with carbonyl iron powder (CIP) to achieve the synergy of multiple loss mechanisms and obtain good electromagnetic absorption capability. 3D printed wire was prepared by using RGO-CIP composite microspheres and polylactic acid (PLA), and coaxial rings were printed by fused deposition molding (FDM) to test electromagnetic properties. In this study, many heterogeneous interfaces triggering polarization loss are formed on the surface and inside of the composite microspheres. These heterogeneous interfaces produce abundant folds and pores, which enhance the multiple reflections and scattering of microwaves. The added RGO and CIP forms a conductive network, forming a conductance loss. When the RGO content is 5.1 wt%, RGO-CIP/PLA −4 composite exhibits excellent microwave absorption performance. At the material thickness of 2.2 mm, the maximum reflection loss is −50.1 dB and the absorption bandwidth is 6.0 GHz. At the material thickness of 2.2 mm, the effective absorption bandwidth is 6.24 GHz and the maximum reflection loss is −29.08 dB. The RGO-CIP composite microspheres improve the microwave absorption performance of 3D printed composites and provide an effective way to prepare structural wave absorbing plates and devices by 3D printing technology.

Modified BiFeO3/rGO nanocomposite by controlled synthesis to enhance adsorption and visible-light photocatalytic activity

In this study, a sol-gel process is used to synthesize a bismuth ferrite (BiFeO3, or BFO for short)/reduced graphene oxide (rGO) nanocomposite (BGO). The structural, morphological, and optical characteristics of the BiFeO3 nanopowder are modified by controlling heat treatment parameters and rGO contents. The semi-spherical BFO nanoparticles possess rhombohedral distorted perovskite crystal structure and are grafted on rGO nanosheets of various sizes which are attributed to the existence of rGO content during the sol-gel process. The observed interface between rGO nanosheets and BFO nanoparticles assists in the efficient charge separation and transfer of photogenerated BFO charge carriers through rGO nanosheets. Compared to BFO, BGO has a narrower band gap energy of 1.8 eV, a lower rate of charge carrier recombination, and stronger magnetic characteristics. The adsorption performance and photocatalytic activity mechanisms have been thoroughly examined. By adding rGO, the adsorption isotherm of methylene blue (MB) on the BFO photocatalyst changed from the Freundlich to the Langmuir. Also, the adsorption kinetics were investigated using a pseudo-second-order model. Furthermore, the degradation of MB is used to evaluate the visible light photocatalytic activity whereby 98% degradation was reached after 300 min. The Mott-Schottky test and the active species scavenger experiment are used to assess the potential mechanisms of MB photodegradation. The findings showed that the primary active species in photodegradation were hydroxyl radicals. Also, the nanocomposite was reasonably stable, and it could be magnetically removed from aqueous environments and utilized again for subsequent usage.

Effect of reduced graphene oxide addition on cathode functional layer performance in solid oxide fuel cells

Solid oxide fuel cells (SOFCs) operating at high temperatures are highly efficient electrochemical devices since they convert the chemical energy of a fuel directly into heat and electrical energy. The electrochemical performance of an SOFC is significantly influenced by the materials and microstructure of the electrodes since the electrochemical reactions in SOFCs take place at three/triple phase boundaries (TPBs) within the electrodes. In this study, graphene in the form of reduced graphene oxide (rGO) is added to cathode functional layer (CFL) to improve the cell performance by utilizing the high electrical properties of graphene. Various cells are prepared by varying the rGO content in CFL slurry (1–5 wt %), the number of screen printing (1–3) and the cathode sintering temperature (900–1100 °C). The electrochemical behavior of the cells is evaluated by electrochemical performance and impedance tests. It is observed that there is a ∼26% increase in the peak performance of the cell coated with single layer CFL having 1 wt % graphene and 1050 °C sintering temperature, compared to that of the reference cell.

Fabrication of Flexible Thermoplastic Polyurethane/Coal Hydrogasification Semi-coke Composites with Low rGO Content for High-Performance Microwave Absorption

Semi-coke (SC), a residue of coal hydrogasification, is recycled and incorporated into thermoplastic polyurethane (TPU) to create composites for microwave absorption (MA). Herein, we developed porous reduced SC (rSC)–reduced graphene oxide (rGO) hybrids (SGHs) via in situ reduction of a preoxidized SC (oSC) and graphene oxide (GO) mixture. Low-content GO was introduced to considerably improve the dielectric properties of SGHs while decreasing the production cost. Then, a solution blending technique was applied to develop microwave absorbers using TPU as the matrix. The obtained TPU/SGH5 composite with a feed ratio of 5:1 (oSC:GO) showed an optimum reflection loss of −48.81 dB at a thickness of 2.5 mm and an effective absorption bandwidth of 4.30 GHz (7.74–12.04 GHz) in 2–18 GHz. However, the MA property of the obtained composites with the same amount of rSC or rGO alone was not comparable to that of the TPU/SGH5 composite. The inherent magnetism, heteroatoms, and abundance of heterogeneous surfaces of rSC and the considerable dielectric loss of rGO worked together to improve the MA performance of TPU/SGH composites. This study offers an easy and effective technical method for producing high-performance microwave absorbers with a low rGO content, illuminating the path toward achieving sustainable development by converting waste into wealth.

Suppression of secondary electron emission of oxygen free copper by two-step electrodeposition of rGO/Cu composite coating

We prepared a reduced-graphene-oxide/Cu (rGO/Cu) composite coating to suppress the total secondary electron yield by two-step electrodeposition. We found that driven by the applied electric field, copper ions can enter the interior of graphene oxide (GO) film and nucleate, while the surface is still GO. The rGO/Cu composite coating was obtained by heat treatment with a combination of hydrogen and argon. After heat treatment, XPS analysis shows that the oxygen content of rGO on the surface of the composite coating is reduced from 31.29 at.% to 11.00 at.%, and the carbon content is 85.25 at.%. Raman analysis shows that rGO is still mainly sp2 hybrid structure. The deposited copper particles sintered in the composite coating and formed Cu-O-C chemical bond. The maximum secondary electron yield (δmax) is 1.10, which is close to the δmax of rGO coating (1.09). Compared with the rGO coating, the presence of copper in the rGO/Cu composite coating slightly increases the TEY, but significantly improves the bonding strength between the coating and the substrate at high temperatures.

A Study on the Effect of Graphene in Enhancing the Electrochemical Properties of SnO2-Fe2O3 Anode Materials.

To enhance the conductivity and volume expansion during the charging and discharging of transition metal oxide anode materials, rGO-SnO2-Fe2O3 composite materials with different contents of rGO were prepared by the in situ hydrothermal synthesis method. The SEM morphology revealed a sphere-like fluffy structure, particles of the 0.4%rGO-10%SnO2-Fe2O3 composite were smaller and more compact with a specific surface area of 223.19 m2/g, the first discharge capacity of 1423.75 mAh/g, and the specific capacity could be maintained at 687.60 mAh/g even after 100 cycles. It exhibited a good ratio performance and electrochemical reversibility, smaller charge transfer resistance, and contact resistance, which aided in lithium-ion transport. Its superior electrochemical performance was due to the addition of graphene, which made the spherical particle size distribution more uniform, effectively lowering the volume expansion during the process of charging and discharging and improving the electrochemical cycle stability of the anode materials.

Shape memory effect in hybrid polylactide-based polymer scaffolds functionalized with reduced graphene oxide for tissue engineering

Herein, an extensive characterization of the electrospun PLA-PCL scaffolds was performed to reveal the effect of the reduced graphene oxide (rGO) content (0.7, 1.0 and 1.5 wt%) on the morphology, structure, thermal behavior, and shape memory performance of developed materials. XRD and DSC characterization revealed transformation of semi-crystalline orthorhombic PLA structure to quasi-amorphous for both pure PLA-PCL and hybrid PLA-PCL-rGO composite scaffolds after heating and SME cycle. The addition of rGO promoted the change in the structure of prepared composites, and increase in mechanical characteristics. Electrospun hybrid PLA-PCL scaffolds with rGO are promising composites for tissue engineering applications, such as adaptable implants, due to pronounced SME.

Boosting the thermoelectric performance of n-type Bi2S3 by compositing rGO

The construction of nanocomposite structures can effectively reduce the lattice thermal conductivity of thermoelectric materials, which are considered an essential technique to improve the thermoelectric figure of merit of thermoelectric materials. Herein, we prepared a series of Bi2S3 +xml reduced graphene oxide (rGO)(x = 5 ml, 10 ml, 15 ml, 20 ml) nanocomposite thermoelectric materials by combining simple hydrothermal synthesis techniques and tubular sintering techniques. The rGO is uniformly dispersed in the precursor solution and tightly bound in the Bi2S3 matrix, which significantly reduces the thermal conductivity of the matrix material. The total thermal conductivity(κ) of the Bi2S3/rGO (20 ml) nanocomposite is as low as 0.12 W·K−1·m−1 at 578 K, which is nearly 69% lower than that of the pure Bi2S3. In addition, the conductivity of Bi2S3/rGO (10 ml) nanocomposites above 450 K is better than that of the pure Bi2S3, which indicates that adjusting the content of rGO can optimize the conductivity of Bi2S3 to a certain extent. At 577 K, the ZT of Bi2S3/rGO (10 ml) nanocomposite can reach 0.22, which is 46% higher than that of pure Bi2S3. This study utilizes hydrothermal synthesis techniques and tubular sintering techniques to tune the structure of composites at the nanoscale, providing a new approach for optimizing the thermoelectric properties of Bi2S3.

X-ray photoelectron spectroscopy and temperature-dependent electrical transport properties of MnFe2O4-reduced graphene oxide nanocomposites

The reduced graphene oxide (rGO) sheets are assembled with MnFe2O4 (MFO) nanoparticles via an in-situ sol–gel autocombustion route to obtain MFO@rGO nanocomposites. The investigation of their structural and electrical properties is carried out through X-ray photoelectron spectroscopy (XPS) and impedance analyzer, respectively. XPS study discloses the presence of C, O, Fe, and Mn in the MFO@rGO composite, indicating the decoration of MnFe2O4 nanoparticles by rGO sheets. XPS study also reflects the mixed Fe3+/Fe2+ oxidation states of Fe and mixed Mn2+/Mn3+oxidation states of Mn in the composite. The highest value of ac conductivity (σac = 7.51 × 10−6 Ω−1 cm−1 at 1 MHz) at room temperature is obtained within the vicinity of the percolation threshold when rGO content is 20 wt%. The ac conductivity of composites increases with frequency up to 100 °C and then becomes independent of the frequency with a further increase in temperature. The impedance gradually decreases with temperature, revealing the occurrence of negative temperature coefficient of resistance effect in composites. The findings suggest that the MFO@rGO composites can be a potential nominee for the fabrication of electrodes for supercapacitors and flexible electronic devices of low resistance and high electrical conductivity for high-frequency applications.

Influence of rGO on the Crystallization Kinetics, Cytoxicity, and Electrical and Mechanical Properties of Poly (L-lactide-co-ε-caprolactone) Scaffolds.

Biodegradable scaffolds of poly (L-lactide-co-ε-caprolactone) (PLCL) and reduced graphene oxide (rGO) were prepared by TIPS (thermally induced phase separation). The nonisothermal cold crystallization kinetics were investigated by differential scanning calorimetry (DSC) with various cooling rates. The experimental values indicate that nonisothermal crystallization improves with cooling rate, but the increasing rGO concentration delays crystallization at higher temperatures. The activation energies were calculated by the Kissinger equation; the values were very similar for PLCL and for its compounds with rGO. The electrical conductivity measurements show that the addition of rGO leads to a rapid transition from insulating to conductive scaffolds with a percolation value of ≈0.4 w/w. Mechanical compression tests show that the addition of rGO improves the mechanical properties of porous substrates. In addition, it is an anisotropic material, especially at compositions of 1% w/w of rGO. All of the samples with different rGO content up to 1% are cytotoxic for C2C12 myoblast cells.

Development of polymethylmethacrylate/reduced graphene oxide composite films as thermal interface materials

AbstractWith the miniaturization and integration of electronics into more powerful but smaller functional devices, major challenges arise. One of them is to efficiently dissipate the significant amount of thermal energy produced by these electronic devices. This requires interface materials with good thermal management properties. Reduced graphene oxide has attracted a lot of interest in this area due to its good thermal conductivity, similar with those of pristine graphene. In this work, polymethylmethacrylate/reduced graphene oxide (PMMA/RGO) composite thin films have been generated by drop casting mixtures of PMMA solutions and RGO suspensions, all prepared in N,N‐dimethylformamide (DMF) solvent. Raman, SEM and AFM investigations confirmed that homogenous PMMA/RGO composite thin films have been obtained, with RGO being uniformly distributed in the blending. Further measurements demonstrated that the thermal conductivity of RGO/PMMA composites increased with the concentration of RGO in the polymeric mixture: for the highest RGO content, the thermal conductivity increased by 210%, with no important modifications of electrical resistivity. These results are very promising for the development of new thermal interface materials based on PMMA/RGO composites to be used, for instance, in automotive industry.

Nanoribbon-like NiCo2O4/reduced graphene oxide nanocomposite for high-performance hybrid supercapacitor

Nanoribbon-like NiCo2O4/reduced graphene oxide (RGO) nanocomposites were in situ prepared by an oxalate-assisted hydrothermal method. The various RGO contents (10, 20, and 30 wt%) were added during oxalate precipitation. The plate-like shape of oxalate precipitates was thermally decomposed into the nanoribbon-like morphology in which the NiCo2O4 nanoparticles were aligned in one direction. A network of pores between nanoparticles (∼21–14 nm) is caused by exhausting a large volume of gases during calcination at 450 °C. The specific capacity increases from 418 to 758 C g−1 at 1 A g−1 with the amounts of RGO up to 30 wt%. Furthermore, the NiCo2O4/RGO nanocomposites exhibit higher rate capability than the pristine NiCo2O4 nanoparticles. The NiCo2O4-30 wt% RGO//active carbon hybrid capacitor has a high energy density of 61 Wh kg−1 at the current density of 1 A g−1 and excellent cycling stability of 92% at 3 A g−1 after 5000 cycles.

Improvement of the dielectric properties of polyvinylidene fluoride/reduced graphene oxide composites via in‐situ ball milling assisted extensional flow field

AbstractIn this work, a new melt blending method under the synergy of in‐situ ball milling (ISBM) and extensional flow field are reported. The corresponding equipment and processing mechanism of this new method are introduced in detail. The improvement in the dielectric properties of polyvinylidene fluoride (PVDF)/reduced graphene oxide (rGO)/hollow glass beads (HGBs) composites are experimentally investigated. Benefit from uniform dispersion and reduced shattered rate of HGBs, the effect of ISBM on the rGO is strengthened. The results of SEM, TEM, XRD, and Raman spectra show that HGBs promote the exfoliation and dispersion of rGO in PVDF matrix. The addition of HGBs not only increases the dielectric constant of the composites, but also reduces the dielectric loss. When the content of rGO is 3.5 wt%, the dielectric constant of PVDF/rGO/HGBs (PRH) composites reaches 132.7, which is 63.2% higher than that of PVDF/rGO (PR) composites without HGBs. Moreover, the dielectric loss ofPRHcomposites is 0.3, which is 23.3% lower than that ofPRcomposites. To sum up, the new processing method is a simple, green and efficient way to enhance the dielectric properties of PVDF/rGO composites by improving the exfoliation and dispersion of rGO in PVDF.

Microstructure, Mechanical and Electrical Properties of Hybrid Copper Matrix Composites with Fe Microspheres and rGO Nanosheets.

Copper matrix composites have a wide application as magnetic conductive materials, electromagnetic materials, electrical discharge machining materials, etc. Such materials are expected to have a good combination of excellent electrical conductivity and good mechanical strength. In this work, micro/nano hybrid reinforcements with Fe microspheres and reduced graphene oxide (rGO) nanosheets were developed for copper matrix composites. The rGO/Fe/Cu powders were firstly wet-mixed and then densified by the vacuum hot-pressing sintering to obtain the bulk compacts. Microstructure, electrical conductivity and mechanical properties of such compacts were investigated. Microstructural result of as-sintered compacts shows that the Fe microspheres could distribute in the matrix uniformly, and rGO nanosheets exhibit both agglomerated and dispersed states. The grain size of Cu matrix decreased with the increase of the rGO content. Hardness, compression and tensile 0.2% yield strength of the as-sintered compacts were improved evidently by the addition of the hybrid Fe/rGO, comparing with pure Cu and single Fe-added composites. However, a lower electrical conductivity appeared in the more rGO-added composites, but still reached more than 33.0% international annealing copper standard (IACS). These performance change could be sought in the spatially geometrical distribution and characteristics of such micro/nano Fe/rGO hybrid addition, and the relevant mechanisms were discussed.

Bubblegum inspired epoxidized natural rubber composites for superior mechanical and electrical properties

For bubblegum, the tight interfacial adhesion between a sugarcoating and the inner gum base and the hardness of sugarcoating ensure its high performance. Inspired by bubblegum, epoxidized natural rubber/reduced graphene oxide/ferroferric oxide (ENR/rGO/Fe3O4: oENR) composites were prepared to simultaneously achieve robust mechanical and electrical properties. According to FTIR, Raman, XPS, SEM and TEM, the molecular chains on the surface of ENR particles interact with rGO to form N–C covalent and NH–O hydrogen bond interfacial interactions via a “hydrazine bridge”, which was the same as the hard sugarcoating function in bubblegum. However, the molecular chains inside ENR particles were not crosslinked, and acted in a manner similar to that of the gum base in bubblegum. Remarkably, this bubblegum inspired structure offered efficient conducting pathways and enhancement for oENR. Consequently, the tensile strength of oENR with 4.71 wt% rGO content (oENR 4.71 ) was 12.7 MPa, a 20.5-fold increment compared with that for neat ENR. Ductility was not impacted by the presence of filler. Strikingly, oENR possessed superior electrical conductivity of 0.1 S/cm and EMI SE of 40.6 dB with 99.97% absorbance efficiency. It displayed a 35.3 Gauge factor at low strain with sensitivity suitable for magnetic switching. Potential applications in electromagnetic interference shielding (EMI) and stretchable sensors were apparent. A novel approach for significantly improving both electrical and mechanical properties of epoxidized natural rubber has been demonstrated. This should facilitate potential application in multifunctional electronics. • Segregated oENR with strong interfacial interactions were in-situ prepared. • rGO act as crosslinking center to form interfacial linkage by hydrazine bridge. • Tensile strength of oENR 4.71 increase 20.5-folds without sacrificing ductility. • oENR possess a percolation threshold of 0.15 wt% and conductivity of 50 S/m. • oENR show applications in EMI shielding, stretchable sensor and magnetic switch.

Bis(2-hydroxyethyl) terephthalate from depolymerized waste polyester modified graphene as a novel functional crosslinker for electrical and thermal conductive polyurethane composites

Bis(2-hydroxyethyl) terephthalate (BHET) with active hydroxyl group derived from waste polyester can be applied as a polyurethane chain extender and an organic modifier for graphene oxide (GO). Herein, functionalized reduced GO (BHET-rGO) with single-layer was obtained by modifying GO with BHET, and then reduced by hydrazine hydrate. Waterborne polyurethane (WPU) nanocomposites with excellent mechanical performance, electrical and thermal conductivities were prepared via in-situ polymerization using the novel functional crosslinker BHET-rGO. Compared with the same content of rGO (7.41 wt%), WPU/BHET-rGO composites exhibit better properties containing equivalent BHET content. For example, BHET-rGO endows the WPU composites with higher tensile strength of 39.1 MPa (enhanced by 454.6%), electrical conductivity of 8×10−3 S/m (improved by 15 times), and thermal conductivity of 0.551 W m−1 K−1 (increased by 21.1%). Meanwhile, the sensitivity of WPU/BHET-rGO composite is well recovered during a large-strain stretching/shrinking cycle, and its resistance is stable under complex deformation. Besides, significant thermal stability ensures the durable of polyurethane to resist high-temperature. Hence, BHET-rGO have greater potential for fabricating high-performance elastomer composites, especially for conductive elastomer composites.