In this study, the process for tuning the electrical properties of graphene/polyvinylidene fluoride (Gr/PVDF) nanocomposite films by a thermal annealing process is explored. The surface morphology and microstructure of the nanocomposite were characterized. The effect of temperature on the electrical conductivity was investigated by heating and cooling the sample from the room temperature up to 150 °C. The effect of annealing on the electrical conductivity was recorded as a function of annealing temperature. A Hall effect measurement was conducted as a function of annealing temperatures to obtain Hall voltage ( ), carrier mobility (μ), carrier concentration ( ), Hall coefficient ( ), resistivity, and carrier conductivity type ( or ). It was found that the films annealed at 150 °C exhibited the best electrical conductivity of Gr/PVDF films. This study may provide an insight into the development and utilization of Gr/PVDF films in future electronics and the potential applications in various sectors such as aerospace, automotive, and biomedical industries.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10116551 | PMC |
| http://dx.doi.org/10.1021/acsomega.3c00283 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Premelted-Substrate-Promoted Selective Etching Strategy Realizing CVD Growth of High-Quality Graphene on Dielectric Substrates.
ACS Appl Mater Interfaces
January 2025
Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Direct chemical vapor deposition growth of high-quality graphene on dielectric substrates is a great challenge. Graphene growth on dielectrics always suffers from the issues of a high nucleation density and poor quality. Herein, a premelted-substrate-promoted selective etching (PSE) strategy was proposed.
View Article and Find Full Text PDFInjectable ionic hydrogel conductors: Advancing material design to transform cardiac pacing.
Biomaterials
January 2025
Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA. Electronic address:
Direct pacing of the mid myocardium where re-entry originates can be used to prevent ventricular arrhythmias and circumvent the need for painful defibrillation or cardiac ablation. However, there are no pacing electrodes small enough to navigate the coronary veins that cross these culprit scar regions. To address this need, we have developed an injectable ionically conductive hydrogel electrode that can fill the epicardial coronary veins and transform them into flexible electrodes.
View Article and Find Full Text PDFRADON in a high karst area of Montenegro - A case study.
Appl Radiat Isot
January 2025
School of Applied Mathematics and Informatics, University of Osijek, Trg Ljudevita Gaja 6, Osijek, Croatia.
The national radon surveys in Montenegro revealed that the highest annual average radon concentrations (C) in ground floors of dwellings and schools were found in a rural region characterized as a typical high-karst area. In this region, spanning approximately 800 km, C values in 9 houses and 16 schools ranged from 219 to 2494 Bq/m, with AM = 977 Bq/m. To investigate the causes of these elevated indoor radon concentrations, the following parameters were measured near the 25 surveyed buildings: soil humidity, electrical conductivity, pH, activity concentrations of Ra, U, U, Th and K, radon concentration in soil gas (c), soil permeability for radon gas (k), and gamma dose rate in the air.
View Article and Find Full Text PDFUnraveling the conversion mechanism toward spinel sulfides as cathode materials for Mg-ion batteries.
Phys Chem Chem Phys
January 2025
National Engineering Research Centre for Mg Alloys, Chongqing University, Chongqing 400044, PR China.
Rechargeable Mg batteries are promising candidates for achieving considerable high-energy-density. Enhancing the energy density can be achieved by integrating metallic Mg anodes with conversion-type cathode materials, which are characterized by multi-electron transfer process and elevated specific capacities in contrast to intercalation-type materials. Despite these advantages, the conversion-type cathodes still have some challenges of substantial volume expansion, sluggish diffusion kinetics and intricate mesophase evolution during repeated electrochemical reactions.
View Article and Find Full Text PDFGa-doping in LiLaTiO: a promising approach to boost ionic conductivity in solid electrolytes for high-performance all-solid-state lithium-ion batteries.
RSC Adv
January 2025
Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering & Technology (BUET) Dhaka Bangladesh
Article Synopsis
- All-solid-state lithium-ion batteries (ASSLBs) are poised to enhance the performance and safety of next-generation electronics, especially electric vehicles, by utilizing solid electrolytes with high ionic conductivity.
- Researchers have substituted the B-site of LiLaTiO (LLTO) with Ga to create Ga-doped LLTO solid electrolytes, leading to structural improvements, enhanced ionic conductivity, and better electrochemical stability through a solid-state reaction method.
- The results show that Ga-doped LLTO exhibits a significantly increased ionic conductivity of 4.15 × 10 S cm in LiLaTiGaO (with 3% Ga), making it a promising candidate for future ASSLB applications due to its stable operating voltage range.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!