scispace - formally typeset
Search or ask a question

Answers from top 10 papers

More filters
Papers (10)Insight
Even at a high current density of 1000 or 2000 mA·g−1, the graphene maintained good cycling stability, indicating that it is a promising anode material for high-performance lithium ion batteries.
This technique will enable cost-effective mass production of graphene sheets with good quality, and the as-exfoliated graphene will find wide applications, including lithium-ion batteries.
Owing to the superior mechanical, thermal, and electrical properties, graphene was a perfect candidate to improve the performance of lithium ion batteries.
“Graphene energy” can be utilized for the production of graphene batteries with much better charging capacity than the traditionally used lithium batteries.
These new graphene family materials play an important role in improving the ORR performance, thus promoting the practical use in metal-air batteries and fuel cells.
Different insights are provided for graphene study in batteries that may inspire new ideas to address the practical challenges for large-scale adoption of graphene in energy storage.
The findings create new opportunities for capitalizing on waste batteries to produce high-quality graphene and its derivatives.
When applied as anode materials in lithium ion batteries, graphene sheets exhibited a high lithium storage capacity and an excellent cyclability.
This work demonstrated that graphene nanosheets could be an efficient catalyst for lithium-air batteries.
The findings of this paper suggest that the graphene may be proposed as a suitable anode for application in lithium ion batteries.

See what other people are reading

Are cadmium telluride quantum dots effective in radiotherapy?
5 answers
Cadmium telluride quantum dots (CdTe QDs) show promise in radiotherapy applications. CdTe QDs have been utilized in hybrid gamma sensors, enhancing sensitivity and widening the gamma harvesting range for improved dose rate response. Additionally, CdTe QDs labeled with 68Ga radio nuclide demonstrated rapid and efficient tumor targeting and imaging capabilities, making them effective in cancer diagnosis and therapy. Furthermore, CdTe QDs have been incorporated into nanostars for potentiated radiotherapy, which, when combined with checkpoint blockade immunotherapy, led to systemic tumor elimination and enhanced antitumor immunity in mouse models of breast cancer. These findings collectively suggest that CdTe QDs hold potential for enhancing the efficacy of radiotherapy through improved sensing capabilities, targeted imaging, and synergistic treatment strategies.
How does the Soxhlet extraction technique compare to other methods in terms of efficiency and accuracy?
5 answers
The Soxhlet extraction technique offers high efficiency and accuracy compared to other methods in various applications. In the extraction of bioactives from plant parts, a perforated tube-based approach showed superior efficiency over traditional Soxhlet apparatus, providing higher quantities of bioactives with shorter extraction times. Similarly, for obtaining pristine graphene, Soxhlet extraction facilitated delicate polymer removal, resulting in samples with lower residual polymer content and superior structural qualities. Additionally, in the rinsing of graphite-oxide, Soxhlet extraction proved to be environmentally friendly and economically advantageous, allowing for solvent reuse and reducing hazardous waste production. Overall, Soxhlet extraction methods demonstrate enhanced efficiency, accuracy, and cost-effectiveness in various extraction and purification processes compared to conventional techniques.
What are the list of natural and synthetic CNTs nanofiller in polymer nanocomposite for prosthetic applications?
10 answers
In the realm of prosthetic applications, both natural and synthetic nanofillers, particularly carbon nanotubes (CNTs), have been extensively researched for their potential to enhance the mechanical and thermal properties of polymer nanocomposites. Natural nanofillers such as cellulose nanocrystal (CNC) and nanofiber cellulose (NFC) are derived through acid hydrolyzing and mechanical methods, respectively. These materials offer a sustainable option for reinforcing polymers used in prosthetics, contributing to improved mechanical strength and thermal stability. On the synthetic side, carbon nanofiber (CNF) and CNTs stand out for their exceptional properties. Produced via chemical vapor deposition, these synthetic nanofillers, especially CNTs, are favored for their high thermal stability and strong structure, making them ideal for use in polymer composites intended for prosthetic devices. CNTs, in particular, have been highlighted for their ultra-strong, superconductive properties, and their ability to significantly improve the properties of polymer composites when properly dispersed. This improvement is crucial for developing prosthetic devices that require materials with superior mechanical, thermal, and electrical properties. The research by Medupin et al. specifically demonstrates the application of multi-walled carbon nanotube (MWCNT) reinforced natural rubber polymer nanocomposites in prosthetic feet, showcasing enhanced tensile strength, wear resistance, and energy dissipation capabilities, which are essential for the durability and functionality of prosthetics. Moreover, advancements in the synthesis and scalable manufacturing of CNTs have broadened their application in various sectors, including prosthetics, where their mechanical reinforcement capabilities are uniquely beneficial. The integration of CNTs into natural polymers like plasticized starch and chitosan has also been explored, with findings indicating improved conductive properties and better dispersibility in chitosan, suggesting potential for advanced prosthetic applications. In summary, the use of both natural (CNC, NFC) and synthetic (CNF, CNTs) nanofillers in polymer nanocomposites presents a promising avenue for enhancing the performance and functionality of prosthetic devices, with CNTs playing a pivotal role due to their superior mechanical and thermal properties.
Why titanium oxide is a effective photocatalyst for dye degradation application?
4 answers
Titanium oxide-based photocatalysts (TOBPs) are effective for dye degradation due to their ability to extend light absorption into the visible spectrum, enhancing photocatalytic activity. Strategies like doping with elements or combining with other compounds reduce TiO2's bandgap, improving visible light absorption and catalytic performance. TiO2/SnO2 nanocomposites show enhanced degradation rates for dyes under UV irradiation, with increasing SnO2 content leading to higher color degradation rates. Additionally, TiO2-RGO composites exhibit superior degradation performance for various dyes, attributed to graphene's electron transport ability and adsorption properties. The phase composition, particle size, and specific surface area of TiO2 samples significantly impact their photocatalytic activity, with TiO2-P25 Degussa and Anatase demonstrating high efficiency in dye degradation.
What are the different methods for synthesizing nanoparticles using the inverse micelle method?
5 answers
The inverse micelle method is a significant technique for synthesizing nanoparticles with desired shape and size. This method involves the formation of reverse micelles using at least three components, where two are non-miscible and the third is a surfactant with amphiphilic properties. The synthesis of nanoparticles through reverse micelles is particularly useful for achieving uniformity in size and shape. Various procedures fall under the umbrella of the inverse micelle method, including the two-microemulsion reverse micelle technique used for preparing nanoparticles of rare earth manganites like La0.375Ca0.625MnO3 and Nd0.375Ca0.625MnO3. This method allows for precise control over the size distribution of nanoparticles, indicating its potential for tailored nanoparticle synthesis.
What is the connection between alkali treatment of hemp fibers, sound absorption and the viscous characteristic length?
5 answers
Alkali treatment of hemp fibers plays a crucial role in enhancing their properties for composite applications. The treatment effectively removes non-cellulosic components, improves fiber-matrix adhesion, and increases tensile strength and stiffness. This improved adhesion between fibers and matrices due to alkali treatment leads to better sound absorption properties in composites, as seen in impact testing results where alkali-treated hemp fibers showed enhanced impact resistance compared to untreated fibers. Additionally, the alkali treatment alters the fiber constituents, such as cellulose, hemicellulose, and lignin, which influences the interfacial adhesion between fibers and matrices, affecting the viscous characteristic length of the composites. Therefore, alkali treatment of hemp fibers not only enhances mechanical properties but also impacts sound absorption and the viscous characteristic length in composite materials.
What are the current challenges and future prospects for integrating metal contacts on monolayer into 2D transistor technology?
5 answers
Integrating metal contacts on monolayer 2D semiconductors in transistor technology faces challenges such as high contact resistances and metal-induced gap states (MIGS). Achieving Schottky barrier-free contacts for both p- and n-type 2D FETs is crucial, with recent advancements showing promising results. Contact scaling impacts FET performance, with Au contacts to MoS2 FETs displaying reduced ON-current as contact length decreases. Novel metallic materials and contact strategies like van der Waals (vdW) metallic contacts and bulk semimetallic contacts offer solutions for low-resistance p-type contacts, minimizing MIGS and reducing contact resistance significantly. Future prospects involve exploring phase-engineered and semimetallic contacts to transition metal dichalcogenides (TMDCs) for enhanced transistor performance. Addressing these challenges and leveraging innovative contact strategies can pave the way for high-performance 2D transistor technology.
What is the effect of alkali treatment applied to hemp fibers on the viscous characteristic length?
5 answers
The alkali treatment applied to hemp fibers has a significant effect on the viscous characteristic length. Studies have shown that alkali treatment enhances the thermal stability and mechanical properties of hemp fibers. Specifically, the treatment increases the crystallinity of the fibers, leading to improved thermal stability and a rise in the glass transition temperature. Additionally, the removal of non-cellulosic components through alkali treatment improves fiber-matrix adhesion, resulting in better tensile strength and stiffness. Moreover, alkali-treated fiber composites exhibit enhanced flame retardancy and compatibility with the polymer matrix, further highlighting the positive impact of alkali treatment on the viscous characteristic length of hemp fibers.
How is thompson score before thermal cool associated with thermal cooling outcomes?
5 answers
The Thompson score, a prognostic tool for newborns with hypoxic-ischemic encephalopathy (HIE), is associated with long-term outcomes in newborns undergoing controlled hypothermia. It helps predict cognitive and neurological outcomes, with a higher score indicating a significantly higher risk of adverse outcomes such as death, cognitive impairment, relevant neurological impairment, and epilepsy. In the context of thermal cooling, the efficient design of battery thermal management systems (BTMSs) plays a crucial role in enhancing performance and safety. Optimizing cold plate-based liquid cooling BTMS involves balancing cooling efficiency, power consumption, and battery size, leading to improved system performance. Additionally, cooling strategies like precooling and percooling have been shown to enhance exercise performance in the heat, with precooling resulting in lower core temperatures and improved outcomes.
Using sliding mode observer for state of charge estimation?
5 answers
Sliding mode observers are utilized for state of charge (SOC) estimation in lithium-ion batteries to address the challenges posed by their nonlinearity and inconsistency. Various studies propose different approaches using sliding mode observers for accurate SOC estimation. One study introduces an online adaptive sliding mode observer based on an equivalent circuit model and a lumped thermal model, showcasing stability and robust performance. Another research presents a fractional order sliding mode observer for SOC estimation, demonstrating higher accuracy and robustness compared to traditional methods. Additionally, a study designs cascaded fractional-order sliding-mode observers for SOC and state-of-health (SoH) estimation, achieving weaker chattering, faster response, and higher accuracy in comparison to existing methods. Furthermore, a higher-order sliding mode-based approach is proposed for online SOC and SoH estimation, ensuring exact SOC estimation and finite time estimation of battery parameters.
How do carbon quantum dots improve the efficiency and performance of triboelectric materials?
5 answers
Carbon quantum dots (CQDs) play a crucial role in enhancing the efficiency and performance of various materials. In the context of triboelectric materials, CQDs have been utilized to improve functionality. For instance, in the field of triboelectric nanogenerators (TENGs), graphene-based composite electrodes, doped graphene electrodes, and laser-induced graphene (LIG) electrodes have been explored to enhance TENG performance significantly. Similarly, in flexible piezoelectric sensors (FPS), the introduction of CQDs into polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) films has shown improved piezoelectric performance, sensitivity, and stability, enabling applications like anti-touch alarm systems and vibration monitoring. Overall, the unique properties of CQDs, such as their large specific surface area, surface defects, and functional groups, contribute to enhancing the efficiency and performance of triboelectric materials in various applications.