Graphene-based composites for electrochemical energy storage

Wang, Bo; Ruan, Tingting; Chen, Yong; Jin, Fan; Peng, Li; Zhou, Yu; Wang, Dianlong; Dou, S. X.

doi:10.1016/j.ensm.2019.08.004

Cited by 381 publications

(167 citation statements)

References 445 publications

Supporting

Mentioning

165

Contrasting

Unclassified

Order By: Relevance

“…Carbon, metal compound and conductive polymer material are the most commonly matrix material owing to ideal conductivity, pore structure and sulfur adsorption strength. [7][8][9][10][11][12][13][14][15][16] Among these, TiO 2 is regarded as an ideal sulfur-loaded matrix material and is believed that TiO 2 /S composite electrode can effectively inhibit the shuttle effect of polysulfides as a result of the strong adsorption between Ti-O structure and sulfur, thus improving sulfur utilization and cycle life for lithium-sulfur batteries. As known to all, TiO 2 has a variety of microstructures, including rutile and anatase.…”

Section: Discussionmentioning

confidence: 99%

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

et al. 2020

View full text Add to dashboard Cite

Summary Lithium‐sulfur battery is a type of high‐performance chemical power supply system, and the structure of composite substrate material will influence on the electrochemical properties of sulfur cathode active materials. In this paper, a TiO2/TiC composite substrate material with the different crystal structure by means of changing sintering temperature is synthesized and its physical properties and electrochemical performances have been researched. Through X‐ray diffraction analysis, it can be found that the crystal structures of TiC and TiO2 in the TiO2/TiC composite substrate material sinter at different temperature both have been changed obviously due to the strong interaction between the oxygen atom and titanium and carbon atoms. By comparison, when sintering at 600°C, the composite matrix material has higher crystallinity and they accordingly have some confusion after sintering at 500°C. Raman spectrum information displays that TiO2/TiC composite substrate materials with high crystallinity allow the loaded sulfur to enter the pores and it is easier to form a stable physical adsorption. However, TiO2/TiC composite substrate material with some confusion is easier to form chemical adsorption with sulfur. Electrochemical test results illustrate that the specific discharge capacities of TiO2/TiC composite substrate material with the higher crystallinity loaded 55% sulfur can be achieved to 1247.91 and 834.62 mAh g−1 at 0.1 and 0.5C, respectively. Then, after 300 times charge and discharge cycles at 0.2C, the discharge capacity retention rate of TiO2/TiC composite substrate material with some confusion loaded 45% sulfur can reach 54.40%. To sum up, we can conclude that the TiO2/TiC composite materials with different crystal structures will have a serious impact on the electrochemical performances of sulfur cathode for lithium‐sulfur batteries.

show abstract

Section: Discussionmentioning

confidence: 99%

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

et al. 2020

View full text Add to dashboard Cite

show abstract

“…In fact, it has been shown in different graphene/PVDF [12] and CNT/PVDF [15] composites with low filler content into the PVDF matrix, that their presence do not influence the spherulitic size and the kinetic of crystallization, the cross-section SEM images demonstrating a homogeneous dispersion of the nanocarbonaceous fillers, independently of the filler type and content [12]. Morphological analysis of the nanocarbonaceous/polymer composites have been intensively studied in literature [7,50,51], the present results being in agreement with the reported literature (data not shown). The 05CNT/6010 sample shows an initial modulus near E≈ 1.4 GPa.…”

Section: Mechanical Measurementsmentioning

confidence: 99%

Electromechanical Properties of PVDF-Based Polymers Reinforced with Nanocarbonaceous Fillers for Pressure Sensing Applications

Teixido¹,

Lanceros‐Méndez²,

Abete³

et al. 2019

Preprint

View full text Add to dashboard Cite

Polymer-based composites reinforced with nanocarbonaceous materials can be tailored for functional applications. Poly(vinylidene fluoride) (PVDF) reinforced with carbon nanotubes (CNT) or graphene with different filler contents have been developed as potential piezoresistive materials. The mechanical properties of the nanocomposites depend of the PVDF matrix, filler type and filler content. PVDF 6010 is a relatively more ductile material, whereas PVDF-HFP shows larger maximum strain near 300% strain for composites with CNT, 10 times higher than the pristine polymer. This behaviour is similar for all composites reinforced with CNT. On the other hand, rGO/PVDF composites decrease the maximum strain compared to neat PVDF. It is shown that the use of different PVDF copolymers does not influence the electrical properties of the composites. On the other hand, CNT as filler leads to composites with percolation threshold around 0.5 wt.%, whereas reduced graphene oxide (rGO) nanocomposites shows percolation threshold at ≈2 wt.%. Both nanocomposites present excellent linearity between applied pressure and resistance variation, with pressure sensibility (PS) decreasing with applied pressure, from PS≈ 1.1 to 0.2 MPa-1. A proof of concept demonstration is presented, showing the suitability of the materials for industrial pressure sensing applications.

show abstract

“…Therefore, a considerable sustainable energy conversion and storage devices are urgently needed to resolve the current problems. 3,4 Supercapacitors (SCs) and fuel cells (FCs) are two promising energy-storage devices that have aroused worldwide research in the past few decades. [5][6][7] Currently, SCs suffer from low energy densities, specic capacitance and rate performance due to an inappropriate porous structure.…”

Section: Introductionmentioning

confidence: 99%

N,S co-doped hierarchical porous carbon from Chinese herbal residues for high-performance supercapacitors and oxygen reduction reaction

Zhang

Wang

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Graphene-based composites for electrochemical energy storage

Cited by 381 publications

References 445 publications

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

Electromechanical Properties of PVDF-Based Polymers Reinforced with Nanocarbonaceous Fillers for Pressure Sensing Applications

N,S co-doped hierarchical porous carbon from Chinese herbal residues for high-performance supercapacitors and oxygen reduction reaction

Contact Info

Product

Resources

About

Graphene-based composites for electrochemical energy storage

Cited by 381 publications

References 445 publications

Influence of TiO 2 /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

Influence of TiO 2 /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

Electromechanical Properties of PVDF-Based Polymers Reinforced with Nanocarbonaceous Fillers for Pressure Sensing Applications

N,S co-doped hierarchical porous carbon from Chinese herbal residues for high-performance supercapacitors and oxygen reduction reaction

Contact Info

Product

Resources

About

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries

Influence of TiO ₂ /TiC composite materials with different crystal structures on the electrochemical properties as sulfur‐loaded matrix for lithium‐sulfur batteries