MoO3 nanobelts integrated with partially-exfoliated graphite paper for high-performance supercapacitors

2022 ◽  
pp. 108806
Author(s):  
Haifeng Cao ◽  
Yi Pan ◽  
Chenjing Shi ◽  
Li Guo ◽  
Jinlong Yang ◽  
...  
Keyword(s):  
High Performance ◽  
Exfoliated Graphite

Exfoliated Graphite Nanosheets Coating on Nano-grained SnO2/Li4Ti5O12 as a High-Performance Anode Material for Lithium-Ion Batteries

Langmuir ◽  
2020 ◽  
Vol 36 (48) ◽  
pp. 14666-14675
Author(s):  
Yefeng Feng ◽  
Kaidan Wu ◽  
Xiaoqian Deng ◽  
Jin Ke ◽  
BingWen Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
High Performance ◽  
Lithium Ion ◽  
Exfoliated Graphite ◽  
Graphite Nanosheets

scholarly journals Design, Manufacturing, and Characterization of High-Performance Lightweight Bipolar Plates Based on Carbon Nanotube-Exfoliated Graphite Nanoplatelet Hybrid Nanocomposites

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Myungsoo Kim ◽  
Gu-Hyeok Kang ◽  
Hyung Wook Park ◽  
Young-Bin Park ◽  
Yeon Ho Park ◽  
...  
Keyword(s):  
High Performance ◽  
Processing Parameters ◽  
Hybrid Nanocomposites ◽  
Exfoliated Graphite ◽  
Electrical Performance ◽  
Dominant Factor ◽  
Graphite Nanoplatelets ◽  
Bipolar Plates ◽  
Alternative Material

We report a study on manufacturing and characterization of a platform material for high-performance lightweight bipolar plates for fuel cells based on nanocomposites consisting of carbon nanotubes (CNTs) and exfoliated graphite nanoplatelets (xGnPs). The experiments were designed and performed in three steps. In the preexperimental stage, xGnP-epoxy composite samples were prepared at various xGnP weight percentages to determine the maximum processable nanofiller concentration. The main part of the experiment employed the statistics-based design of experiments (DOE) methodology to identify improved processing conditions and CNT : xGnP ratio for minimized electrical resistivity. In the postexperimental stage, optimized combinations of material and processing parameters were investigated. With the aid of a reactive diluent, 20 wt.% was determined to the be maximum processable carbon nanomaterial content in the epoxy. The DOE analyses revealed that the CNT : xGnP ratio is the most dominant factor that governs the electrical properties, and its implications in relation to CNT-xGnP interactions and microstructure are elucidated. In addition, samples fabricated near the optimized condition revealed that there exists an optimal CNT : xGnP ratio at which the electrical performance can be maximized. The electrical and mechanical properties of optimal samples suggest that CNT-xGnP hybrid nanocomposites can serve as an alternative material platform for affordable, lightweight bipolar plates.

scholarly journals Paper Electrodes Coated with Partially-Exfoliated Graphite and Polypyrrole for High-Performance Flexible Supercapacitors

Polymers ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 135 ◽  
Author(s):  
Leping Huang ◽  
Weida Rao ◽  
Lingling Fan ◽  
Jie Xu ◽  
Zikui Bai ◽  
...  
Keyword(s):  
High Performance ◽  
Exfoliated Graphite ◽  
Flexible Supercapacitors

scholarly journals Stretchable, Bio-Compatible, Antioxidant and Self-Powering Adhesives from Soluble Silk Fibroin and Vegetal Polyphenols Exfoliated Graphite

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2352
Author(s):  
Luca Valentini ◽  
Maria Rachele Ceccarini ◽  
Raquel Verdejo ◽  
Gianluca Tondi ◽  
Tommaso Beccari
Keyword(s):  
High Performance ◽  
Clinical Applications ◽  
Exfoliated Graphite ◽  
Complex Geometries ◽  
Electromechanical Properties ◽  
Anti Oxidant ◽  
High Shear Strength ◽  
Tissue Approximation ◽  
Piezoelectric Devices

The development of bio-glues is still a challenging task, regarding adhesion on wet surfaces; often, high performance and adaption to complex geometries need to be combined in one material. Here, we report biocompatible adhesives obtained by blending regenerated silk (RS) with a soluble plant-derived polyphenol (i.e., chestnut tannin) that was also used to exfoliate graphite to obtain graphene-based RS/tannin (G-RS/T) composites. The resultant G-RS/T hybrid material exhibited outstanding stretchability (i.e., 400%) and high shear strength (i.e., 180 kPa), superior to that of commercial bio-glues, and showed sealant properties for tissue approximation. Moreover, we showed how such nanocomposites exhibit electromechanical properties that could potentially be used for the realization of green and eco-friendly piezoelectric devices. Finally, we demonstrate the in vitro glue’s biocompatibility and anti-oxidant properties that enable their utilization in clinical applications.

scholarly journals A Highly Sensitive Electrochemical Glucose Sensor Based on Room Temperature Exfoliated Graphite-Derived Film Decorated with Dendritic Copper

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5067
Author(s):  
Jiaxin Tang ◽  
Luo Wei ◽  
Shuaijie He ◽  
Jihui Li ◽  
Ding Nan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Performance ◽  
High Stability ◽  
Room Temperature ◽  
Glucose Sensor ◽  
Three Dimensional ◽  
Exfoliated Graphite ◽  
Highly Sensitive ◽  
Free Glucose ◽  
Good Catalytic Activity

An ultrasensitive enzyme-free glucose sensor was facilely prepared by electrodepositing three-dimensional dendritic Cu on a room temperature exfoliated graphite-derived film (RTEG-F). An excellent electrocatalytic performance was demonstrated for glucose by using Cu/RTEG-F as an electrode. In terms of the high conductivity of RTEG-F and the good catalytic activity of the dendritic Cu structures, the sensor demonstrates high sensitivities of 23.237 mA/mM/cm2, R2 = 0.990, and 10.098 mA/mM/cm2, R2 = 0.999, corresponding to the concentration of glucose ranging from 0.025 mM to 1.0 mM and 1.0 mM to 2.7 mM, respectively, and the detection limit is 0.68 μM. In addition, the Cu/RTEG-F electrode demonstrates excellent anti-interference to interfering species and a high stability. Our work provides a new idea for the preparation of high-performance electrochemical enzyme-free glucose sensor.

Graphene/Carbon Nanotubes Hybrid Electrode Material for High Performance Supercapacitor

NANO ◽  
2015 ◽  
Vol 10 (05) ◽  
pp. 1550068 ◽  
Author(s):  
Yongzhen Wang ◽  
Yong Wang ◽  
Yuyu Liu ◽  
Azuma Ohuchi ◽  
Xiaomin Wang
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Electrode Material ◽  
High Performance ◽  
Exfoliated Graphite ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mixed Acid ◽  
Graphite Oxides ◽  
Scanning Electron

A graphene (GN)/carbon nanotubes (CNTs) nanocomposite electrode material were prepared via reduction of exfoliated graphite oxides in the presence of CNTs pretreated by mixed acid. The GN/CNTs nanocomposite characterized by X-ray diffraction (XRD), Raman spectrum (Raman) and scanning electron microscope (SEM) has a layered structure with CNTs uniformly sandwiched between the GN sheets, which efficiently decreased the agglomeration GN sheets. Electrochemical data demonstrate that the GN/CNT exhibited higher specific capacitance than that of graphene.

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