Elastic sandwich-type GaN/MnO2/MnON composites for flexible supercapacitors with high energy density

2018 ◽  
Vol 6 (27) ◽  
pp. 13215-13224 ◽  
Author(s):  
Shouzhi Wang ◽  
Yongliang Shao ◽  
Weikang Liu ◽  
Yongzhong Wu ◽  
Xiaopeng Hao
Keyword(s):  
Sandwich Structure ◽  
High Energy ◽  
Buffer Layers ◽  
High Energy Density ◽  
Flexible Electrode ◽  
Oxide Electrodes ◽  
Sandwich Type ◽  
First Time ◽  
Large Volume Change ◽  
Areal Capacity

A novel flexible electrode with a sandwich structure consisting of double stabilizing buffer layers is designed and fabricated for the first time, and significant improvement in cycling stability and desired areal capacity is achieved. This strategy will allow large volume change metal oxide electrodes to be applied in energy storage and related fields.

Approaching the maximum capacity of nickel-rich LiNi0.8Co0.1Mn0.1O2 cathodes by charging to high-voltage in a non-flammable electrolyte of propylene carbonate and fluorinated linear carbonates

2019 ◽  
Vol 55 (9) ◽  
pp. 1256-1258 ◽  
Author(s):  
Hieu Quang Pham ◽  
Eui-Hyung Hwang ◽  
Young-Gil Kwon ◽  
Seung-Wan Song
Keyword(s):  
Energy Density ◽  
Propylene Carbonate ◽  
High Voltage ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Lithium Metal ◽  
Maximum Capacity ◽  
Lithium Metal Batteries ◽  
First Time

We report for the first time a promising approach to achieve the maximum capacity of LiNi0.8Co0.1Mn0.1O2 cathodes in a non-flammable electrolyte for safe and high-energy density lithium-ion and lithium metal batteries.

A 3D-printed ultra-high Se loading cathode for high energy density quasi-solid-state Li–Se batteries

2020 ◽  
Vol 8 (1) ◽  
pp. 278-286 ◽  
Author(s):  
Xuejie Gao ◽  
Xiaofei Yang ◽  
Sizhe Wang ◽  
Qian Sun ◽  
Changtai Zhao ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
3D Printed ◽  
Areal Capacity

A quasi-solid-state Li–Se battery assembled with an ultra-high Se loading of 20 mg cm−2 delivers the highest reported areal capacity of 12.99 mA h cm−2 at 3 mA cm−2.

Wire, hybrid, and laser-cut X-pinches as Talbot-Lau backlighters for electron density diagnostics

2022 ◽  
Author(s):  
Maria Pia Valdivia Leiva ◽  
Gilbert W Collins IV ◽  
Fabio Conti ◽  
Farhat Beg
Keyword(s):  
Electron Density ◽  
Mass Density ◽  
Front Propagation ◽  
High Energy ◽  
Pulsed Power ◽  
High Energy Density ◽  
Inertial Confinement ◽  
X Ray ◽  
Wave Front Propagation ◽  
First Time

Abstract Talbot-Lau X-ray Deflectometry (TXD) enables refraction-based imaging for high-energy-density physics (HEDP) experiments, and thus, it has been studied and developed with the goal of diagnosing plasmas relevant to Inertial Confinement and Magnetic Liner Inertial Fusion. X-pinches, known for reliably generating fast (~1 ns), small (~1 µm) x-ray sources, were driven on the compact current driver GenASIS (~200 kA, 150 ns) as a potential backlighter source for TXD. Considering that different X-pinch configurations have characteristic advantages and drawbacks as x-ray generating loads, three distinct copper X-pinch configurations were studied: the wire X-pinch, the hybrid X-pinch, and the laser-cut X-pinch. The Cu K-shell emission from each configuration was characterized and analyzed regarding the specific backlighter requirements for an 8 keV TXD system: spatial and temporal resolution, number of sources, time of emission, spectrum, and reproducibility. Recommendations for future experimental improvements and applications are presented. The electron density of static objects was retrieved from Moiré images obtained through TXD. This allowed to calculate the mass density of static samples within 4% of the expected value for laser-cut X-pinches, which were found to be the optimal X-pinch configuration for TXD due to their high reproducibility, small source size (≤5 µm), short duration (~1 ns FWHM), and up to 10^6 W peak power near 8 keV photon energy. Plasma loads were imaged through TXD for the first-time using laser-cut X-pinch backlighting. Experimental images were compared with simulations from the X-ray Wave-Front Propagation code, demonstrating that TXD can be a powerful x-ray refraction-based diagnostic for dense Z-pinch loads. Future plans for Talbot-Lau Interferometry diagnostics in the pulsed-power environment are described.

Na3V2O2x(PO4)2F3−2x: a stable and high-voltage cathode material for aqueous sodium-ion batteries with high energy density

2015 ◽  
Vol 3 (12) ◽  
pp. 6271-6275 ◽  
Author(s):  
P. Ramesh Kumar ◽  
Young Hwa Jung ◽  
Chek Hai Lim ◽  
Do Kyung Kim
Keyword(s):  
Aqueous Solution ◽  
Energy Density ◽  
Cathode Material ◽  
High Voltage ◽  
High Energy ◽  
Sodium Ion ◽  
High Energy Density ◽  
Sodium Ion Batteries ◽  
Aqueous Sodium ◽  
First Time

The reversible electrochemical activity of the Na3V2O2x(PO4)2F3−2x compound in an aqueous solution is reported for the first time.

MOF-derived α-NiS nanorods on graphene as an electrode for high-energy-density supercapacitors

2018 ◽  
Vol 6 (9) ◽  
pp. 4003-4012 ◽  
Author(s):  
Chong Qu ◽  
Lei Zhang ◽  
Wei Meng ◽  
Zibin Liang ◽  
Bingjun Zhu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
Positive Electrode ◽  
High Energy Density ◽  
Hybrid Supercapacitor ◽  
First Time

α-NiS/rGO nanohybrids synthesized from water-refluxed Ni-MOF-74/rGO were applied as a high-performance hybrid supercapacitor positive electrode for the first time.

scholarly journals High energy density electrolytes for H2/Br2 redox flow batteries, their polybromide composition and influence on battery cycling limits

RSC Advances ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 5218-5229
Author(s):  
Michael Küttinger ◽  
Jakub K. Wlodarczyk ◽  
Daniela Daubner ◽  
Peter Fischer ◽  
Jens Tübke
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
First Time

Polybromides formation in aqueous bromine electrolytes and influence on H2/Br2 redox flow battery performance is investigated the first time.

scholarly journals Analysis of gas content in oil-filled equipment with defects for which ethane is the key gas

2020 ◽  
Vol 2 (58) ◽  
pp. 33-42
Author(s):  
O. Shutenko ◽  
O. Kulyk
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Gas Content ◽  
Spark Discharges ◽  
Arc Discharges ◽  
First Time ◽  
Maximum Content ◽  
Combined Defects ◽  
Gas Ratio

The article presents results of a comprehensive analysis of the gas content in oil of 252 pieces of high-voltage equipment with defects, for which ethane is the key gas. There are 14 types of defects with maximum ethane content, which correspond both to overheating with temperature 150-300°C and low temperature overheating accompanied by discharges with different energy density (partial discharges, spark discharges, discharges with low and high energy density, arc discharges). The most typical defects are analysed and examples of their recognition by different researchers are given. For each type of defect, ranges of gas percentage values and gas ratio values are obtained. This is particularly important for the recognition of combined defects (overheating that is accompanied by discharges), because for such defects the values of these criteria are not regulated in any known standard for the interpretation of the results of the analysis of gases dissolved in oil. For the first time, 14 nomograms and graphic areas of defects for which ethane is the key gas have been obtained, which makes it possible to significantly expand the range of reference nomograms, as the regulatory document in force in Ukraine does not contain reference nomograms for defects with the maximum content of ethane. For all 252 pieces of equipment, a comparative analysis of known diagnoses with diagnoses made using the Duval triangle was made. It has been determined that diagnoses made using different methods may differ significantly from each other as well as from real diagnoses. The ranges of gas percentage and gas ratio values obtained in the work, together with the defect nomograms, make it possible to use three of these criteria simultaneously to recognise the type of defect with a maximum ethane content, which in turn will improve the reliability of defect type recognition based on the analysis of gases dissolved in oil.

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