Design Principle, Optimization Strategies, and Future Perspectives of Anode-Free Configurations for High-Energy Rechargeable Metal Batteries

2021 ◽  
Author(s):  
Wentao Yao ◽  
Peichao Zou ◽  
Min Wang ◽  
Houchao Zhan ◽  
Feiyu Kang ◽  
...  
Keyword(s):  
Design Principle ◽  
High Energy ◽  
Future Perspectives

Emulsion Formation by Homogenization: Current Understanding and Future Perspectives

2019 ◽  
Vol 10 (1) ◽  
pp. 239-258 ◽  
Author(s):  
Andreas Håkansson
Keyword(s):  
Food Production ◽  
Scaling Laws ◽  
Scientific Literature ◽  
Volume Fraction ◽  
High Volume ◽  
High Energy ◽  
Current Understanding ◽  
Future Perspectives ◽  
Fundamental Understanding ◽  
Food Applications

Emulsion formation by homogenization is commonly used in food production and research to increase product stability and to design colloidal structures. High-energy methods such as high-pressure homogenizers and rotor–stator mixers are the two most common techniques. However, to what extent does the research community understand the emulsion formation taking place in these devices? This contribution attempts to answer this question through critically reviewing the scientific literature, starting with the hydrodynamics of homogenizers and continuing by reviewing drop breakup and coalescence. It is concluded that although research in this field has been ongoing for a century and has provided a substantial amount of empirical correlations and scaling laws, the fundamental understanding is still limited, especially in the case of emulsions with a high-volume fraction of the disperse phase, as seen in many food applications. These limitations in the current understanding are also used to provide future perspectives and suggest directions for further investigation.

scholarly journals Electrolytes for Energy Dense Batteries

2020 ◽  
Author(s):  
Rana Mohtadi
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Storage Systems ◽  
High Energy ◽  
High Energy Density ◽  
Li Ion Batteries ◽  
Future Perspectives ◽  
Research Directions ◽  
Electrochemical Storage ◽  
Li Ion

The ever-rising demands for energy dense electrochemical storage systems have been driving interests in beyond Li-ion batteries such as those based on lithium and magnesium metals. These high energy density batteries suffer from several challenges, several of which stem from the flammability/volatility of the electrolytes and/or instability of the electrolyte with either the negative, positive electrode or both. Recently, hydride-based electrolytes have been paving a path towards overcoming these issues. Namely, highly performing solid state electrolytes have been reported and several key challenges in multivalent batteries were overcome. In this review, the classes of hydride-based electrolytes reported for energy dense batteries are discussed. Future perspectives are presented to guide research directions in this field.

scholarly journals Shining Light on Anion-Mixed Nanocatalysts for Efficient Water Electrolysis: Fundamentals, Progress, and Perspectives

2022 ◽  
Vol 14 (1) ◽  
Author(s):  
Yaoda Liu ◽  
Paranthaman Vijayakumar ◽  
Qianyi Liu ◽  
Thangavel Sakthivel ◽  
Fuyi Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Electrolysis ◽  
High Energy ◽  
Transition Metal Compounds ◽  
Water Dissociation ◽  
Future Perspectives ◽  
Metal Compounds ◽  
Mixed Water ◽  
Mixed Transition

Highlights This review introduces recent advances of various anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, (oxy)hydroxides, and borides) for efficient water electrolysis applications in detail. The challenges and future perspectives are proposed and analyzed for the anion-mixed water dissociation catalysts, including polyanion-mixed and metal-free catalyst, progressive synthesis strategies, advanced in situ characterizations, and atomic level structure–activity relationship. Abstract Hydrogen with high energy density and zero carbon emission is widely acknowledged as the most promising candidate toward world's carbon neutrality and future sustainable eco-society. Water-splitting is a constructive technology for unpolluted and high-purity H2 production, and a series of non-precious electrocatalysts have been developed over the past decade. To further improve the catalytic activities, metal doping is always adopted to modulate the 3d-electronic configuration and electron-donating/accepting (e-DA) properties, while for anion doping, the electronegativity variations among different non-metal elements would also bring some potential in the modulations of e-DA and metal valence for tuning the performances. In this review, we summarize the recent developments of the many different anion-mixed transition metal compounds (e.g., nitrides, halides, phosphides, chalcogenides, oxyhydroxides, and borides/borates) for efficient water electrolysis applications. First, we have introduced the general information of water-splitting and the description of anion-mixed electrocatalysts and highlighted their complementary functions of mixed anions. Furthermore, some latest advances of anion-mixed compounds are also categorized for hydrogen and oxygen evolution electrocatalysis. The rationales behind their enhanced electrochemical performances are discussed. Last but not least, the challenges and future perspectives are briefly proposed for the anion-mixed water dissociation catalysts.

scholarly journals Present and future perspectives for high energy density physics with intense heavy ion and laser beams

2005 ◽  
Vol 23 (03) ◽  
Author(s):  
D.H.H. HOFFMANN ◽  
A. BLAZEVIC ◽  
P. NI ◽  
O. ROSMEJ ◽  
M. ROTH ◽  
...  
Keyword(s):  
Energy Density ◽  
Heavy Ion ◽  
High Energy ◽  
High Energy Density ◽  
Laser Beams ◽  
Future Perspectives ◽  
High Energy Density Physics

Current trends and future perspectives in high energy physics

Pramana ◽  
1993 ◽  
Vol 41 (S1) ◽  
pp. 1-32
Author(s):  
Jogesh C Pati
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Future Perspectives ◽  
Current Trends ◽  
Energy Physics

scholarly journals Present and future perspectives for high energy density physics with intense heavy ion and laser beams

2005 ◽  
Vol 23 (01) ◽  
Author(s):  
D.H.H. HOFFMANN ◽  
A. BLAZEVIC ◽  
P. NI ◽  
O. ROSMEJ ◽  
M. ROTH ◽  
...  
Keyword(s):  
Energy Density ◽  
Heavy Ion ◽  
High Energy ◽  
High Energy Density ◽  
Laser Beams ◽  
Future Perspectives ◽  
High Energy Density Physics

scholarly journals Progress in ionizing radiation resistance modification of polymer materials

2021 ◽  
Vol 2109 (1) ◽  
pp. 012021
Author(s):  
Guikai Zheng ◽  
Min Zhu ◽  
Chao Liu ◽  
Qiang Xiao ◽  
Qiqi Wang
Keyword(s):  
Ionizing Radiation ◽  
Radiation Resistance ◽  
High Energy ◽  
Nuclear Industry ◽  
Polymer Materials ◽  
Space Technology ◽  
Future Perspectives ◽  
High Energy Radiation ◽  
Special Environment ◽  
Ionizing Radiation Resistance

Abstract With the wide application of polymer materials, much attention has been paid to the modification methods of polymer materials with high-energy radiation resistance to satisfy special environment, such as nuclear industry, space technology, medical equipmen. In this review, progress in ionizing radiation resistance modification of polymer materials is introduced in depth and different modification methods are compared. Finally, future perspectives of this field are discussed.

scholarly journals Preliminary Research on a High Thrust-to-Weight Ratio of Double-Sided Composite Impeller Microturbine Engine

2021 ◽  
Vol 2021 ◽  
pp. 1-27
Author(s):  
Cheng Zhang ◽  
Bei Yang ◽  
Yun Wang ◽  
Gaoxing Tu
Keyword(s):  
Power Density ◽  
Design Principle ◽  
Low Cost ◽  
Weight Ratio ◽  
High Energy ◽  
Performance Parameters ◽  
Jet Engine ◽  
Preliminary Research ◽  
Long Endurance ◽  
High Thrust

In some situations, the improvement of the thrust-to-weight ratio (TWR) of microturbine engines (MTEs) for energy-, economic-, and environment-related reasons can be achieved for military or civilian purposes. However, due to limitations of existing traditional MTE technology, it is difficult to meet the key requirements of small aircraft for high energy/power density and low-cost power, especially for long-endurance drone swarms. To address these problems, a novel compact concept of a high-TWR of MTE with a double-sided composite impeller (DSCI) is proposed in this research. First, the principle and structure of the concept are explained through theoretical analysis, and its potential advantages are discussed. Second, the DSCI is analyzed at the top level, and the design principle and important parameters are discussed. The DSCI and supporting jet engine are preliminarily designed. Then, their weight is estimated. Finally, theoretical analytical and numerical simulations are used to preliminarily research the performance parameters of DSCI jet engine at the design point, and the parameters are discussed. These calculations showed encouraging results, with all components of the DSCI jet engine meeting matching characteristics. Compared to the JetCat P500-PRO-GH, the DSCI jet engine has a 39.4% increase in TWR and a 36.82% decrease in specific fuel consumption (sfc). This study lays a foundation for the development of high energy/power density MTEs in the future.

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