scholarly journals Enzymatic Synthesis, Characterization and Biocompatibility Studies of Cellulose Nanoparticles from Cotton Fibers

2018 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Lung Epithelial Cells ◽  
Cotton Fibers ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Cellulose Nanoparticles ◽  
Viability Assay ◽  
Wide Range ◽  
New Energy ◽  
Green Catalysis ◽  
Average Size

Interest in cellulose nanoparticles has been increasing exponentially in the past few decades due to its unique characteristics such as reinforcement properties, high tensile strength, and excellent thermal and electrical properties. Cellulose nanoparticles were produced by an enzymatic method including hydrolysis of cotton fibers by cellulase enzyme and sonication process. Further, cellulose nanoparticles were characterized to determine the morphology and purity of the material. Characterization of cellulose nanoparticles was performed by Scanning Electron Microscope (SEM) with Energy Dispersive X-Ray Spectroscopy (EDX) and Fourier Transform Infrared Spectroscopy (FT-IR). Biocompatibility studies of cellulose nanoparticles were carried out by MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-Diphenyltetrazolium Bromide) assay and Live/Dead viability assay. Using SEM, the average size of cellulose nanoparticles was found to be around 100-125nm and the particles were spherical in shape. FTIR spectrum showed the formation of cellulose nanoparticles from cotton fibers without any presence of impurities. MTT assay and Live/Dead viability assay showed no significant induction of cell death even at higher concentrations (100 μg) upon exposure to Rat Lung Epithelial cells. The results revealed that the synthesized cellulose nanoparticles could be used in wide range of emerging applications in the development of new energy storage devices, enzyme immobilization, antimicrobial and medical materials, green catalysis, bio-sensing and controlled drug delivery.

Investigation on NiWO4/PANI Composite as Electrode Material for Energy Storage Devices

2021 ◽  
Author(s):  
S. Rajkumar ◽  
S Gowri ◽  
S Dhineshkumar ◽  
Princy Merlin Johnson ◽  
Anandaraj Sathiyan
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
Energy Demand ◽  
Fossil Fuels ◽  
Energy Storage Materials ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Pani Composite ◽  
New Energy ◽  
Inorganic Components

With the fast exhaustion of fossil fuels, the need for new energy storage materials to meet the world's massive energy demand has inclined tremendously. Inorganic components with conducting polymer based...

Recent Advances on the Application of Graphene Quantum Dots in Energy Storage

2021 ◽  
Vol 15 ◽  
Author(s):  
Feng Shi ◽  
Quanrun Liu
Keyword(s):  
Quantum Dots ◽  
Energy Storage ◽  
Potential Application ◽  
Active Sites ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Graphene Quantum Dots ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
New Energy

Background: As an emerging carbon nanomaterial, graphene quantum dots (GQDs) have shown great potential application in new energy storage devices due to their unique small size effect and abundant edge active sites. This work introduces the main synthesis strategies of GQDs, which includes top-down and bottom-up methods; the application examples of GQDs and GQDs-based composites in energy storage are reviewed, and more, the unique advantages of GQDs are used in supercapacitors, Lithium-ion batteries (LIBs) and Lithium-sulfur batteries (Li–S batteries) are highlighted. The problems and development prospects in this growing area are also discussed. Method: We conducted a detailed search of “the application of GQDs in energy storage devices” in the published papers and the public patents based on Web of Science database in the period from 2014 to 2020. The corresponding literature was carefully evaluated and analyzed. Results: Sixty papers and twenty-eight recent patents were included in this mini-review. The significant advances in the recent years are summarized with comparative and balanced discussion. Thanks to the unique properties of large specific surface area, high conductivity and abundant active sites, GQDs have unparalleled potential application for new energy storage, especially improving the specific capacity and cycle stability of supercapacitors, LIBs and Li-S batteries. Conclusion: The findings of this mini-review confirm the importance of GQDs, show the enhanced electrochemical performance in supercapacitors, LIBs and Li-S batteries, and also provide a helpful guide to design and fabricate highefficiency electrode materials.

scholarly journals Energy storage systems based on endoskeleton structuring

2016 ◽  
Vol 4 (34) ◽  
pp. 13228-13234
Author(s):  
Inho Nam ◽  
Jongseok Park ◽  
Seongjun Bae ◽  
Soomin Park ◽  
Young Geun Yoo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
Storage Systems ◽  
Energy Sources ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Safety Issues ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
New Energy

The new energy storage technology proposed here includes an endoskeleton architecture similar to vertebrates, which (1) provides flexibility for future mobile/human integrated electrics, (2) ensures the scalability of devices for the storage of fluctuating energy sources and (3) solves safety issues associated with energy storage devices in electric vehicles.

scholarly journals BiFeO3-BaTiO3: A new generation of lead-free electroceramics

2018 ◽  
Vol 08 (06) ◽  
pp. 1830004 ◽  
Author(s):  
Dawei Wang ◽  
Ge Wang ◽  
Shunsuke Murakami ◽  
Zhongming Fan ◽  
Antonio Feteira ◽  
...  
Keyword(s):  
Energy Storage ◽  
Limited Range ◽  
Lead Free ◽  
Potassium Sodium Niobate ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Wide Range ◽  
Energy Storage Properties ◽  
New Generation ◽  
Initial Results

Lead-based electroceramics such as Pb(Zr.Ti)O3 (PZT) and its derivatives have excellent piezoelectric, pyroelectric and energy storage properties and can be used in a wide range of applications. Potential lead-free replacements for PZT such as potassium sodium niobate (KNN) and sodium bismuth titanate (NBT) have a much more limited range of useful properties and have been optimized primarily for piezoelectric applications. Here, we review the initial results on a new generation of lead-free electroceramics based on BiFeO3-BaTiO3 (BF-BT) highlighting the essential crystal chemistry that permits a wide range of functional properties. We demonstrate that with the appropriate dopants and heat treatment, BF-BT can be used to fabricate commercially viable ceramics for applications, ranging from sensors, multilayer actuators, capacitors and high-density energy storage devices. We also assess the potential of BF-BT-based ceramics for electrocaloric and pyroelectric applications.

scholarly journals Energy storage devices in electrified railway systems: A review

2020 ◽  
Vol 2 (3) ◽  
pp. 183-201 ◽  
Author(s):  
Xuan Liu ◽  
Kang Li
Keyword(s):  
Energy Storage ◽  
Performance Improvement ◽  
Current Practice ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Railway Systems ◽  
Wide Range ◽  
Railway Industry ◽  
Recent Developments ◽  
Comprehensive Comparison

Abstract As a large energy consumer, the railway systems in many countries have been electrified gradually for the purposes of performance improvement and emission reduction. With the widespread utilization of energy-saving technologies such as regenerative braking techniques, and in support of the full electrification of railway systems in a wide range of application conditions, energy storage systems (ESSes) have come to play an essential role. In this paper, some recent developments in railway ESSes are reviewed and a comprehensive comparison is presented for various ESS technologies. The foremost functionalities of the railway ESSes are presented together with possible solutions proposed from the academic arena and current practice in the railway industry. In addition, the challenges and future trends of ESSes in the railway industry are briefly discussed.

scholarly journals Application of Ferrites as Electrodes for Supercapacitor

2021 ◽  
Author(s):  
Ankur Soam
Keyword(s):  
High Specific Capacitance ◽  
Charge Storage ◽  
Synthesis Methods ◽  
Energy Storage Devices ◽  
Supercapacitor Application ◽  
Storage Devices ◽  
Mixed Oxidation ◽  
Wide Range ◽  
Operating Potential ◽  
Surface Redox

Apart from the magnetic properties, ferrites have been considered as efficient electrodes for next generation energy storage devices. This chapter will include applications of spinel ferrites such as MnFe2O4, CoFe2O4, ZnFe2O4 and NiFe2O4 in supercapacitor. In ferrites, the charge storage arises from the fast-reversible surface redox reactions at the electrode/electrolyte interface. In particular, the electrode material with high specific capacitance, wide range of operating potential, low synthesis cost and its availability on the earth are highly desirable to fabricate a supercapacitor. Ferrites with mixed oxidation states have proved as promising electrodes in supercapacitors. In this chapter, we summarize the different synthesis methods of ferrites based nanocomposites and their electrochemical properties for supercapacitor application.

scholarly journals New Materials Design Using Excitonic Quantum Effects: Applications for Fuel Cells, Catalysts, Superconductive and Bioactive Materials

2021 ◽  
Author(s):  
Vladimir B. Kopylov ◽  
Paul Leonard
Keyword(s):  
Chemical Structure ◽  
Energy Storage Devices ◽  
Electron Hole ◽  
Bioactive Materials ◽  
Storage Devices ◽  
Theoretical Substantiation ◽  
Wide Range ◽  
Macro Scale ◽  
Electronically Excited ◽  
First Time

<p>This manauscript begins with a theoretical substantiation of the possibility of thermal (dark) generation of electronically excited states (excitons) in the structure of oxides as a fundamental quantum-chemical property that ensures their continuous activity. For the first time, experimentally, a macro-scale process flow and its quantum nature are proven using a wide range of tools. The mechanism, features of the chemical structure of electron-hole components, and their role in the formation of catalytic properties have been extensively studied. The application of these new principles for the creation of highly efficient catalysts, energy generation and energy storage devices has been evaluated.</p>

scholarly journals Low-Temperature Synthesis of Titanium Oxynitride Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 847
Author(s):  
Felicitas Jansen ◽  
Andreas Hoffmann ◽  
Johanna Henkel ◽  
Khosrow Rahimi ◽  
Tobias Caumanns ◽  
...  
Keyword(s):  
High Pressures ◽  
Crystalline Rock ◽  
Trioctylphosphine Oxide ◽  
Energy Storage Devices ◽  
Reaction Conditions ◽  
Titanium Tetrafluoride ◽  
Storage Devices ◽  
Carbon Fiber Electrodes ◽  
Salt Structure ◽  
Average Size

The synthesis of transition metal oxynitrides is complicated by extreme reaction conditions such as high temperatures and/or high pressures. Here, we show an unprecedented solution-based synthesis of narrowly dispersed titanium oxynitride nanoparticles of cubic shape and average size of 65 nm. Their synthesis is performed by using titanium tetrafluoride and lithium nitride as precursors alongside trioctylphosphine oxide (TOPO) and cetrimonium bromide (CTAB) as stabilizers at temperatures as low as 250 °C. The obtained nanoparticles are characterized in terms of their shape and optical properties, as well as their crystalline rock-salt structure, as confirmed by XRD and HRTEM analysis. We also determine the composition and nitrogen content of the synthesized particles using XPS and EELS. Finally, we investigate the applicability of our titanium oxynitride nanoparticles by compounding them into carbon fiber electrodes to showcase their applicability in energy storage devices. Electrodes with titanium oxynitride nanoparticles exhibit increased capacity compared to the pure carbon material.

Critical factors affecting the 3D microstructural formation in hybrid conductive adhesive materials studied by X-ray nano-tomography

Nanoscale ◽  
2015 ◽  
Vol 7 (3) ◽  
pp. 908-913 ◽  
Author(s):  
Yu-chen Karen Chen-Wiegart ◽  
Miriam Aileen Figueroa-Santos ◽  
Stanislas Petrash ◽  
Jose Garcia-Miralles ◽  
Jun Wang
Keyword(s):  
Lead Free Solder ◽  
Critical Factors ◽  
Energy Storage Devices ◽  
Conductive Adhesives ◽  
Factors Affecting ◽  
X Ray ◽  
Storage Devices ◽  
Wide Range ◽  
Free Solder ◽  
Adhesive Materials

X-ray nano-tomography reveals 3D characters in hybrid conductive adhesives, which are favorable in a wide range of applications, including a lead-free solder in micro-chips, and in electronics and energy storage devices.

Study on Extension Functional Integration and Benefit of Electric Vehicle

2011 ◽  
Vol 328-330 ◽  
pp. 556-559
Author(s):  
Yu Hui Zhou
Keyword(s):  
Functional Analysis ◽  
Electric Vehicles ◽  
Functional Integration ◽  
Peak Load ◽  
Clean Energy ◽  
Energy Storage Devices ◽  
Load Shifting ◽  
Storage Devices ◽  
New Energy ◽  
Energy Environment

Through the extension of functional analysis of pure electric vehicles, electric vehicles, charge and discharge are presented potential operational benefits, including: clean energy platform for grid peak load shifting, emergency energy and energy storage devices and other effects, the benefits of electric vehicles through the establishment of model quantitative answer to the new energy environment of cost recovery sources of electric vehicles, electric vehicles for the development of new energy obtained solutions.

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