Improved energy storage, magnetic and electrical properties of aligned, mesoporous and high aspect ratio nanofibers of spinel-NiMn 2 O 4

2017 ◽  
Vol 426 ◽  
pp. 913-923 ◽  
Author(s):  
Jai Bhagwan ◽  
Stuti Rani ◽  
V. Sivasankaran ◽  
K.L. Yadav ◽  
Yogesh Sharma
Keyword(s):  
Energy Storage ◽  
Electrical Properties ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Magnetic And Electrical Properties

scholarly journals Size Distribution, Mechanical and Electrical Properties of CuO Nanowires Grown by Modified Thermal Oxidation Methods

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1051 ◽  
Author(s):  
Raitis Sondors ◽  
Jelena Kosmaca ◽  
Gunta Kunakova ◽  
Liga Jasulaneca ◽  
Matiss Martins Ramma ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Electric Field ◽  
Thermal Oxidation ◽  
Size Distribution ◽  
High Aspect Ratio ◽  
Growth Conditions ◽  
Cuo Nanowires ◽  
Young’S Moduli ◽  
Order Of Magnitude

Size distribution, Young’s moduli and electrical resistivity are investigated for CuO nanowires synthesized by different thermal oxidation methods. Oxidation in dry and wet air were applied for synthesis both with and without an external electrical field. An increased yield of high aspect ratio nanowires with diameters below 100 nm is achieved by combining applied electric field and growth conditions with additional water vapour at the first stage of synthesis. Young’s moduli determined from resonance and bending experiments show similar diameter dependencies and increase above 200 GPa for nanowires with diameters narrower than 50 nm. The nanowires synthesized by simple thermal oxidation possess electrical resistivities about one order of magnitude lower than the nanowires synthesized by electric field assisted approach in wet air. The high aspect ratio, mechanical strength and robust electrical properties suggest CuO nanowires as promising candidates for NEMS actuators.

Morphology and electrical properties of high aspect ratio ZnO nanowires grown by hydrothermal method without repeated batch process

2012 ◽  
Vol 101 (8) ◽  
pp. 083905 ◽  
Author(s):  
Jin Woo Cho ◽  
Churl Seung Lee ◽  
Kyoung Il Lee ◽  
Seon Min Kim ◽  
Sung Hyun Kim ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Hydrothermal Method ◽  
High Aspect Ratio ◽  
Batch Process ◽  
Zno Nanowires ◽  
Repeated Batch ◽  
Repeated Batch Process

Suspensions of carbon nanofibers in organic medium: rheo-electrical properties

2015 ◽  
Vol 17 (48) ◽  
pp. 32316-32327 ◽  
Author(s):  
Mohamed Youssry ◽  
Dominique Guyomard ◽  
Bernard Lestriez
Keyword(s):  
Electrical Properties ◽  
Aspect Ratio ◽  
Carbon Nanofibers ◽  
Propylene Carbonate ◽  
High Aspect Ratio ◽  
Structural Evolution ◽  
Organic Medium

The nonaqueous suspensions of carbon nanofibers (CNFs) in 1 M lithium bis(trifluoromethanesulfonaimide) in propylene carbonate electrolyte reveal unique structural evolution and shear-induced transition due to the high aspect ratio.

scholarly journals Understanding inks for porous-electrode formation

2017 ◽  
Vol 5 (39) ◽  
pp. 20527-20533 ◽  
Author(s):  
Kelsey B. Hatzell ◽  
Marm B. Dixit ◽  
Sarah A. Berlinger ◽  
Adam Z. Weber
Keyword(s):  
Energy Storage ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Porous Electrode ◽  
Energy Storage And Conversion ◽  
Electrode Performance ◽  
Colloidal State

Scalable manufacturing of high-aspect-ratio multi-material electrodes are important for advanced energy storage and conversion systems. There is a need to understand how one goes from a colloidal state through processing to a functional porous electrode. Such knowledge enables ink-engineering for electrode performance and durability optimization.

Numerical Simulation of Thermal Performance of a High Aspect Ratio Thermal Energy Storage Device

2012 ◽  
Author(s):  
Jingde Zhao ◽  
Jorge L. Alvarado ◽  
Ehsan M. Languri ◽  
Chao Wang
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Energy Storage ◽  
Aspect Ratio ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
High Aspect Ratio ◽  
Numerical Study ◽  
Experimental Results ◽  
Heat Transfer Analysis

Heat transfer analysis of a high aspect ratio thermal energy storage (TES) device was carried out numerically. The three dimensional numerical study was performed to understand the heat transfer enhancement which results from internal natural convection in a high aspect ratio vertical unit. Octadecane was used as phase change material (PCM) inside TES system, which consisted of six corrugated panels filled with PCM. Each panel had a total of 6 tall cavities filled with PCM, which were exposed to external flow in a concentric TES system. Unlike traditional concentric-type TES devices where heat transfer by conduction is the dominant heat transport mechanism, the high aspect ratio TES configuration used in the study helped promote density-gradient based internal convection mechanism. The numerical model was solved based on the finite volume method, which captured the whole transient heat transfer process effectively. The time-dependent temperature profiles of the PCM inside a single TES panel are compared with the experimental results for two cases. Numerical and experimental results of the two cases showed a reasonable agreement. Furthermore, convection cells were formed and sustained when the PCM melted within the space between the solid core and the walls. The promising results of this numerical study illustrate the importance of internal natural convection on the speed of the PCM melting (charging) process.

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