scholarly journals A Power Buffer in an Electric Driveline: Two Batteries Are Better Than One

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Juan de Santiago ◽  
Florian Burmeister ◽  
Johan Lundin ◽  
Janaina G. Oliveira
Keyword(s):  
Energy Storage ◽  
High Energy ◽  
Primary Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Storage Unit ◽  
Battery Lifetime ◽  
Energy Storage Unit ◽  
Power Response ◽  
Better Than

Fuel cells and high energy density batteries have limited overrated capacity and slow power response. Ultracapacitors and flywheels are proposed to overcome these limitations and to facilitate regenerative braking in hybrid and electric vehicles. The simulations presented in this paper show that a Secondary Energy Storage Unit (SESU) enhances the performance of the drivelines as previously suggested and provides additional improvements. A combined design of the primary energy source and the SESU reduces the total weight and volume and increases the battery lifetime. A full-electric driveline is simulated using a standard EPA FTP-75 drive cycle. Then the same vehicle is simulated with as SESU and the results are compared. The same is done for a hybrid driveline. Two drivelines are used as references and then enhanced with an SESU; four simulations are presented in total. Simulation results show that an energy storage device with very low energy and high power allows better battery selection and energy management.

Polyaniline-based carbon nanospheres and redox mediator doped robust gel films lead to high performance foldable solid-state supercapacitors

2017 ◽  
Vol 41 (17) ◽  
pp. 9024-9032 ◽  
Author(s):  
Enke Feng ◽  
Hui Peng ◽  
Zhiguo Zhang ◽  
Jindan Li ◽  
Ziqiang Lei
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Energy Density ◽  
High Performance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
Carbon Nanospheres ◽  
Device Applications

As-fabricated foldable solid-state supercapacitors are suitable for highly fold-tolerant high-energy-density energy storage device applications.

Simulation of Behaviour of an Energy Storage Device During Installation Process in Lake Ontario

2018 ◽  
Author(s):  
M. Hasanat Zaman ◽  
Ayhan Akinturk ◽  
Andrew McGillis
Keyword(s):  
Energy Storage ◽  
National Research Council ◽  
Lake Ontario ◽  
Storage Device ◽  
Release Mechanism ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Offshore Engineering ◽  
Scale Test ◽  
Good Agreement

A model of a compressed air energy storage unit is tested for tow-out and installation in the Ocean, Coastal & River Engineering (OCRE) Portfolio of the National Research Council of Canada (NRC). The proposed prototype accumulator is a cylinder of 36 m in diameter and 12 m in height, which will be installed at the bottom of Lake Ontario at about 60 m water depth. The model of the accumulator with scale 1:21.5 was fabricated at the Design and Fabrication Unit of NRC. Appropriate ballast systems were designed and applied for the tow out, installations and release mechanism tests. The model scale test was conducted to examine the hydrodynamic behavior of the accumulator during tow-out and set down operations. NRC’s Towing Tank and Offshore Engineering Basin test facilities were used for the tasks. In this paper only the installation case of the accumulator is reported and discussed. Relevant numerical simulations are also carried out. Comparisons of the numerical results with the experimental results show good agreement for the compared cases.

Emerging NiCo2O4 Electrode Materials Assembled by Nanosheets for High Performance Hybrid Capacitor with High Specific Capacitance

2020 ◽  
Vol 15 (4) ◽  
pp. 498-503
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Dong Zhang ◽  
Yucai Li ◽  
Shiwei Song ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Power Density ◽  
Rational Design ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Devices

Rational design and construction of hybrid capacitor electrode materials with prominent energy and power density plays an indispensable role for its potential application in energy storage devices. In this work, the nanoflower-like NiCo2O4 samples are successfully prepared on Ni foam via a facile hydrothermal method. The as-fabricated NiCo2O4 samples exhibit superior electrochemical performance with a high specific capacitance of 444.4 F g–1 at 1 A g–1 and excellent capacitance retention. In addition, the as-fabricated device presents a high energy density of 0.298 mWh cm–3 at a power density of 5.71 mW cm–3 and excellent cycle stability with the capacitance retention of 75.6% after 10000 cycles, indicating a promising application as electrodes for energy storage device.

A solid state energy storage device with supercapacitor–battery hybrid design

2017 ◽  
Vol 5 (29) ◽  
pp. 15266-15272 ◽  
Author(s):  
Jiaqi Dai ◽  
Kun Fu ◽  
Ramesh Palanisamy ◽  
Amy Gong ◽  
Glenn Pastel ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electric Vehicles ◽  
State Energy ◽  
Storage Systems ◽  
Electronic Devices ◽  
High Energy ◽  
High Rate ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Systems

High power and high energy density are important requirements for advanced energy storage systems in mobile electronic devices, electric vehicles, and military-grade high-rate energy storage systems.

scholarly journals Experimental Achievement and Improvement of Latent Heat Energy Storage Unit

2019 ◽  
Vol 01 (02) ◽  
pp. 182-190 ◽  
Author(s):  
Hocine GUELLIL ◽  
Abdel Illah Nabil KORTI ◽  
◽  
Keyword(s):  
Energy Storage ◽  
Latent Heat ◽  
Thermal Energy ◽  
Phase Change Materials ◽  
Thermal Storage ◽  
Heat Transfer Fluid ◽  
Storage Device ◽  
Storage Unit ◽  
Energy Storage Unit ◽  
Thermal Energy Storage Systems

Thermal energy storage systems by latent heat, in which phase change materials are used, are the subject of many scientific works. These systems are designed to guarantee the energy saving through promising technology. The present work concerns the experimental study of thermal performances of a latent heat thermal storage device made in our laboratory (ETAP). The PCM (paraffin) is stored in the vertical finned U-shaped tubes of the exchanger. The air is used as the heat transfer fluid. The storage unit use several identical heat exchangers filled with paraffin. The study examines the complete cycle with the two processes of charging (melting) and discharging (solidification) to analyse the effect of the numbers of exchangers on the thermal performance of the thermal storage. The obtained results showes that the storage unit with three exchangers stores 73 and 32% more thermal energy than a storage unit with one and two exchangers. At the end of the discharging duration, the first exchanger releases its total heat in Conf. 1, 2 and 3 respectively, after 126, 149 and 160 min

Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries

2017 ◽  
Vol 5 (48) ◽  
pp. 25539-25544 ◽  
Author(s):  
Haibing Zheng ◽  
Haodong Li ◽  
Minghao Yu ◽  
Min Zhang ◽  
Yexiang Tong ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Great Promise ◽  
Energy Storage Device ◽  
Alkaline Batteries ◽  
Rechargeable Alkaline Batteries ◽  
Enhanced Crystallinity

Aqueous alkaline batteries represent an emerging kind of energy storage device, which hold great promise to power electronics with both high energy density and power density.

scholarly journals Enhancing the Electrochemical Properties of LaCoO3 by Sr-Doping, rGO-Compounding with Rational Design for Energy Storage Device

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Bin Zhang ◽  
Chuanfu Yu ◽  
Zijiong Li
Keyword(s):  
Energy Storage ◽  
Electrochemical Properties ◽  
Rational Design ◽  
Sol Gel ◽  
Specific Capacity ◽  
Functional Materials ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Electrochemical Performances

Abstract Perovskite oxides, as a kind of functional materials, have been widely studied in recent years due to its unique physical, chemical, and electrical properties. Here, we successfully prepared perovskite-type LaCoO3 (LCOs) nanomaterials via an improved sol-gel method followed by calcination, and investigated the influence of calcination temperature and time on the morphology, structure, and electrochemical properties of LaCoO3 nanomaterials. Then, based on the optimal electrochemical performance of LCO-700-4 electrode sample, the newly synthesized nanocomposites of Sr-doping (LSCO-0.2) and rGO-compounding (rGO@LCO) through rational design exhibited a 1.45-fold and 2.03-fold enhancement in its specific capacitance (specific capacity). The rGO@LCO electrode with better electrochemical performances was further explored by assembling rGO@LCO//rGO asymmetric supercapacitor system (ASS) with aqueous electrolyte. The result showed that the ASS delivers a high energy density of 17.62 W h kg−1 and an excellent cyclic stability with 94.48% of initial capacitance after 10,000 cycles, which are good electrochemical performances among aqueous electrolytes for green and new efficient energy storage devices.

A double-chamber energy storage device with dual ionic electrolyte enabling high energy density

2018 ◽  
Vol 274 ◽  
pp. 31-39 ◽  
Author(s):  
Fen Guo ◽  
Yiju Li ◽  
Dianxue Cao ◽  
Baoan Fan ◽  
Yi Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
Double Chamber
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