scholarly journals Development of Tetraarylphosphonium/Tetrakis(pentafluorophenyl)borate (TAPR/TFAB) salts as non-aqueous electrolytes for organic redox flow batteries

2019 ◽  
Vol 7 (12) ◽  
pp. 492-498
Author(s):  
ZeAndra Whitfield ◽  
Janese Bibbs ◽  
Ghislain R Mandouma ◽  
John Miller ◽  
Matt Bird ◽  
...  
Keyword(s):  
Ion Pairs ◽  
High Capacity ◽  
Aqueous Electrolytes ◽  
New Class ◽  
Large Size ◽  
Simple Filtration ◽  
Battery Technology ◽  
Work Supports ◽  
And Storage ◽  
Borate Salts

A series of weakly coordinating cations/anions (TAPR/TFAB) ion pairs are, herein, being proposed as non-aqueous electrolytes for high capacity ORFBs. These were accessed via a Palladiumcatalyzed approach followed by the simple filtration/isolation of the product. These substituted tetraarylphosphonium/tetrakis(pentafluorophenyl)borate salts 1-4 where the substituents are a pmethoxy (1), a 3,4-dimethoxy (2), a p-phenyl (3), and a p-trimethylsilylacetylene (TMSA) (4) have potential use in several industries owing to their unique solubility in low polarity solvents. These salts constitute a new class of molecular ion pairs which can promote charge dissociation even in low polarity solvents because of their large size and bulkiness. The result being an increased conductivity in those media that can be useful for electrochemistry, advances in catalysis, battery technology, petroleum handling etc. This work supports the national security goal of fostering the development of affordable, clean and renewable energy source and storage.

scholarly journals Highly absorbent hydrogels comprised from interpenetrated networks of alginate–polyurethane for biomedical applications

2021 ◽  
Vol 32 (6) ◽  
Author(s):  
Jesús A. Claudio-Rizo ◽  
Nallely Escobedo-Estrada ◽  
Sara L. Carrillo-Cortes ◽  
Denis A. Cabrera-Munguía ◽  
Tirso E. Flores-Guía ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Degradation Rate ◽  
High Capacity ◽  
Hydrolytic Degradation ◽  
Absorption Capacity ◽  
Amide Bonds ◽  
E Coli ◽  
Swelling Capacity ◽  
And Storage ◽  
Potential Area

AbstractDeveloping new approaches to improve the swelling, degradation rate, and mechanical properties of alginate hydrogels without compromising their biocompatibility for biomedical applications represents a potential area of research. In this work, the generation of interpenetrated networks (IPN) comprised from alginate–polyurethane in an aqueous medium is proposed to design hydrogels with tailored properties for biomedical applications. Aqueous polyurethane (PU) dispersions can crosslink and interpenetrate alginate chains, forming amide bonds that allow the structure and water absorption capacity of these novel hydrogels to be regulated. In this sense, this work focuses on studying the relation of the PU concentration on the properties of these hydrogels. The results indicate that the crosslinking of the alginate with PU generates IPN hydrogels with a crystalline structure characterized by a homogeneous smooth surface with high capacity to absorb water, tailoring the degradation rate, thermal decomposition, and storage module, not altering the native biocompatibility of alginate, providing character to inhibit the growth of E. coli and increasing also its hemocompatibility. The IPN hydrogels that include 20 wt.% of PU exhibit a reticulation index of 46 ± 4%, swelling capacity of 545 ± 13% at 7 days of incubation at physiological pH, resistance to both acidic and neutral hydrolytic degradation, mechanical improvement of 91 ± 1%, and no cytotoxicity for monocytes and fibroblasts growing for up to 72 h of incubation. These results indicate that these novel hydrogels can be used for successful biomedical applications in the design of wound healing dressings.

scholarly journals Possibilities for Developing Electromobility by Using Autonomously Powered Trolleybuses Based on the Example of Gdynia

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2971
Author(s):  
Mikołaj Bartłomiejczyk ◽  
Marcin Połom
Keyword(s):  
Fossil Fuels ◽  
Technological Development ◽  
High Capacity ◽  
Urban Transport ◽  
Spatial Accessibility ◽  
The European Union ◽  
Low Weight ◽  
Key Issues ◽  
Zero Emission ◽  
Battery Technology

Trolleybus transport refers to contemporary challenges related to a reduction in emissions of greenhouse gases and CO2 into the atmosphere formulated by international institutions, such as the United Nations, the Organisation for Security and Co-operation in Europe, or the European Union. Departure from fossil fuels in urban transport is one of the key challenges for the coming years. Trolleybuses are an important tool in this task, even though their importance was declining in the past. Nowadays, due to, among others, technological development, in particular the availability of high-capacity batteries, their long life and low weight, trolleybus transport is becoming popular again. The use of the existing overhead contact infrastructure of the trolleybus network and small on-board batteries allow expanding the spatial accessibility of zero-emission public transport. Thus, this reduces the social differentiation in access to environmentally friendly transport that does not emit pollutants at the place of operation. The article presents possibilities of using on-board batteries in shaping trolleybus connections with the optimal use of the existing overhead contact lines (OHL). It presents a procedure that allows for the evaluation of the extent to which the OHL should cover the routes of bus lines in order to qualify for trolleybus service in the In-Motion-Charging (IMC) technology. Analysis of the literature shows inadequate scientific studies on combining the advantages of overhead wiring and the development of on-board battery technology in popularising zero-emission transport. This article addresses the key issues related to the use of partially autonomous trolleybuses.

scholarly journals A Rechargeable Na/Cl Battery

2020 ◽  
Author(s):  
Hongjie Dai ◽  
Guanzhou Zhu ◽  
Xin Tian ◽  
Hung-Chun Tai ◽  
Yuan-Yao Li ◽  
...  
Keyword(s):  
Electrode Potential ◽  
Low Cost ◽  
High Capacity ◽  
Reversible Capacity ◽  
Sodium Ion ◽  
Sodium Ion Battery ◽  
Standard Electrode Potential ◽  
New Class ◽  
High Reversible Capacity ◽  
First Discharge Capacity

Abstract Sodium is a promising anode material for batteries due to its low standard electrode potential, high abundance and low cost. In this work, we report a new rechargeable ~ 3.5 V sodium ion battery using Na anode, amorphous carbon-nanosphere cathode and a starting electrolyte comprised of AlCl3 in SOCl2 with fluoride-based additives. The battery, exhibiting ultrahigh ~ 2800 mAh/g first discharge capacity, could cycle with a high reversible capacity up to ~ 1000 mAh/g. Through battery cycling, the electrolyte evolved to contain NaCl, various sulfur and chlorine species that supported anode’s Na/Na+ redox and cathode’s chloride/chlorine redox. Fluoride-rich additives were important in forming a solid-electrolyte interface, affording reversibility of the Na anode for a new class of high capacity secondary Na battery.

The SSP: A New Class of Hull for the Oil Industry

2004 ◽  
Author(s):  
Ka˚re Syvertsen ◽  
Clovis Lopes
Keyword(s):  
Surface Area ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Oil Industry ◽  
Model Testing ◽  
Circular Shape ◽  
New Class ◽  
Movement Characteristics ◽  
Double Hull ◽  
And Storage

Sevan Marine AS has developed a new mono-column concept for an FPSO. Its circular shape assures that, no matter from which direction the weather might come, the hull will always present the same surface area to it, becoming indiferent to environmental forces direction changes. The SSP has being through extensive model testing and has shown exceptionally low movement characteristics, and since she is based on the same flotation principles of a ship the SSP is, besides intrinsecally stable, of easy construction and low cost, allowing for great variable deck loads and storage. The SSP also features double hull, and no piping in the tanks, allowing for safe and environmentally friendly operations.

Sulfur-nitrogen rich carbon as stable high capacity potassium ion battery anode: Performance and storage mechanisms

2020 ◽  
Vol 27 ◽  
pp. 212-225 ◽  
Author(s):  
Lin Tao ◽  
Yunpeng Yang ◽  
Huanlei Wang ◽  
Yulong Zheng ◽  
Hongchang Hao ◽  
...  
Keyword(s):  
High Capacity ◽  
Potassium Ion ◽  
And Storage ◽  
Battery Anode

scholarly journals A new class of high capacity cation-disordered oxides for rechargeable lithium batteries: Li–Ni–Ti–Mo oxides

2015 ◽  
Vol 8 (11) ◽  
pp. 3255-3265 ◽  
Author(s):  
Jinhyuk Lee ◽  
Dong-Hwa Seo ◽  
Mahalingam Balasubramanian ◽  
Nancy Twu ◽  
Xin Li ◽  
...  
Keyword(s):  
Lithium Batteries ◽  
Percolation Theory ◽  
Lithium Battery ◽  
High Capacity ◽  
Rechargeable Lithium Batteries ◽  
Rechargeable Lithium Battery ◽  
New Class

Percolation theory enables the design of high capacity cation-disordered oxides for rechargeable lithium battery cathodes.

Nanostructured binary and ternary metal sulfides: synthesis methods and their application in energy conversion and storage devices

2017 ◽  
Vol 5 (42) ◽  
pp. 22040-22094 ◽  
Author(s):  
Pranav Kulkarni ◽  
S. K. Nataraj ◽  
R. Geetha Balakrishna ◽  
D. H. Nagaraju ◽  
M. V. Reddy
Keyword(s):  
Energy Conversion ◽  
Low Cost ◽  
Metal Sulfides ◽  
Synthesis Methods ◽  
Storage Devices ◽  
New Class ◽  
Energy Conversion And Storage ◽  
Ternary Metal ◽  
Ternary Metal Sulfides ◽  
And Storage

Metal sulfides, known as being analogous to metal oxides, have emerged as a new class of materials for energy conversion and/or storage applications due to their low cost and high electrochemical activity.

scholarly journals Operando acoustic emission monitoring of degradation processes in lithium-ion batteries with a high-entropy oxide anode

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Simon Schweidler ◽  
Sören Lukas Dreyer ◽  
Ben Breitung ◽  
Torsten Brezesinski
Keyword(s):  
Acoustic Emission ◽  
Electrode Materials ◽  
Solid Electrolyte Interphase ◽  
High Capacity ◽  
Lithium Ion ◽  
Mechanical Degradation ◽  
High Entropy ◽  
New Class ◽  
Degradation Processes ◽  
Systematic Understanding

AbstractIn recent years, high-entropy oxides are receiving increasing attention for electrochemical energy-storage applications. Among them, the rocksalt (Co0.2Cu0.2Mg0.2Ni0.2Zn0.2)O (HEO) has been shown to be a promising high-capacity anode material. Because high-entropy oxides constitute a new class of electrode materials, systematic understanding of their behavior during ion insertion and extraction is yet to be established. Here, we probe the conversion-type HEO material in lithium half-cells by acoustic emission (AE) monitoring. Especially the clustering of AE signals allows for correlations of acoustic events with various processes. The initial cycle was found to be the most acoustically active because of solid-electrolyte interphase formation and chemo-mechanical degradation. In the subsequent cycles, AE was mainly detected during delithiation, a finding we attribute to the progressive crack formation and propagation. Overall, the data confirm that the AE technology as a non-destructive operando technique holds promise for gaining insight into the degradation processes occurring in battery cells during cycling.

scholarly journals Multi-Channel Data Acquisition System Based on FPGA and STM32

2020 ◽  
Vol 38 (2) ◽  
pp. 351-358
Author(s):  
Yue Zhang ◽  
Linwei Tao
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Dynamic Range ◽  
Sampling Rate ◽  
High Capacity ◽  
Acquisition System ◽  
Total Power ◽  
Low Power Consumption ◽  
Signal Acquisition ◽  
And Storage

In order to realize the acquisition and storage of underwater acoustic signals for aiming at the requirements of multi-channel, low power consumption and small volume for underwater receiver extension of sonar system, a multi-channel signal acquisition and storage system based on FPGA and STM32 with variable number of working channels and sampling frequency is designed, in which the system is consisted of 8 pieces, 8 channel and 24 bits high dynamic range Δ-Σ ADS1278 ADC chip to synchronous multi-channel analog signal acquisition. FPGA, as the acquisition sequence and logic control, reads and collates the ADC chip data and writes it into the internal high-capacity FIFO, and adds corresponding operations according to the characteristics of FIFO in an application. SMT32 single-chip microcomputer reads the FIFO data through the high-speed SPI interface with FPGA and writes the multi-channel data into the high-capacity SD card. The testing results have verified that the system has characteristics such as stable and reliable, easy configuration, low power consumption, can guarantee the multichannel data serial transmission, storage, accurate, up to 64 analog signals at the same time the real-time collection and storage, top 20 kHz sampling rate, the system total power of the system of about 3W, data rates up to 100 Mb/s, fully meet the needs of underwater sound acquisition system.

scholarly journals An algorithm for comparative analysis of power and storage systems for maritime applications

2022 ◽  
Vol 334 ◽  
pp. 06001
Author(s):  
Massimo Rivarolo ◽  
Federico Iester ◽  
Aristide F. Massardo
Keyword(s):  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Combustion Engines ◽  
Propulsion Systems ◽  
Large Size ◽  
Low Emission ◽  
Marine Diesel ◽  
Market Solutions ◽  
And Storage

This paper presents an innovative algorithm to compare traditional and innovative energy systems onboard for maritime applications. The solutions are compared adopting a multi-criteria method, considering four parameters (weight, volume, cost, emissions) and their relevance according to the kind of ship and navigation route. The algorithm, which includes a large and updated database of market solutions, leads to the implementation of HELM (Helper for Energy Layouts in Maritime applications) tool. HELM was conceived to support the design of maritime systems: it chooses the best technology comparing traditional marine diesel engines, propulsion systems with alternative fuels (methanol, ammonia, LNG) and innovative low-emission technologies (fuel cell and batteries). Two case studies are investigated: (i) a small passenger ship for short routes (ii) and a large size ro-ro cargo ship. For case (i), fuel cells represent a competitive solution, in particular considering navigation in emission control areas. For case study (ii) Internal Combustion Engines shows are the best solution. The evaluation of alternative fuels is performed, considering a sensitivity analysis on emissions’ importance: methanol, LNG, and ammonia are promising solutions. For case (i), the installation of electrical batteries is also evaluated to analyse potential advantages to reduce the amount of H2 stored onboard.

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