scholarly journals The Operation Analysis of the Innovative MainBox Food Storage Device

2021 ◽  
Vol 11 (16) ◽  
pp. 7682
Author(s):  
Magdalena Wróbel-Jędrzejewska ◽  
Elżbieta Polak
Keyword(s):  
Food Products ◽  
Pressure Control ◽  
High Energy ◽  
Temperature Monitoring ◽  
Food Storage ◽  
Storage Device ◽  
Correct Operation ◽  
Operation Analysis ◽  
Temperature Conditions ◽  
Low Global Warming Potential

The development and construction of a prototype device (food parcel locker), consisting of small cooling and freezing chambers (boxes) ensuring temperature conditions (+5 C or −18 °C), enabling food storage were carried out. The innovative solutions have been introduced in the MainBox device: the appropriate construction of the device (materials, cooling installation), properly functioning systems (control of chillers, security, temperature monitoring), and propane as refrigerant (high energy efficiency, low global warming potential). The risk of explosion has been eliminated by closing of the cooling installation and reducing of propane amount. The refrigeration unit has been adapted to work in external conditions by installing additional elements (pressure switches for compressor protection and for condensing pressure control). In real conditions, the operation of the innovative MainBox food storage device allowing the receipt of food products without having to wait for a supplier was verified. The temperature distribution in all chambers of the cooling and freezing module was investigated using a thermal imaging camera and a temperature monitoring system. The correct operation of MainBox devices was verified during their loading with food products that require specific temperature conditions during storage.

Nitrogen-Doped Multi-Channel Carbon Nanofibers Incorporated with Nickel Nanoparticles as Multifunctional Modification of Separator for Ultra Stable Li-S Batteries

2021 ◽  
Author(s):  
Zhikang Wang ◽  
Guiqiang Cao ◽  
Da Bi ◽  
Tian-Xiong Tan ◽  
Qingxue Lai ◽  
...  
Keyword(s):  
Nickel Nanoparticles ◽  
Specific Capacity ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Device ◽  
High Specific Capacity ◽  
Nitrogen Doped ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Lithium-Sulfur batteries have been regarded as the most promising electrochemical energy storage device in consideration of their satisfactory high specific capacity and high energy density. However, the inferior conversion efficiency...

High-energy green supercapacitor driven by ionic liquid electrolytes as an ultra-high stable next-generation energy storage device

2018 ◽  
Vol 383 ◽  
pp. 102-109 ◽  
Author(s):  
Ranjith Thangavel ◽  
Aravindaraj G. Kannan ◽  
Rubha Ponraj ◽  
Vigneysh Thangavel ◽  
Dong-Won Kim ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
High Energy ◽  
Storage Device ◽  
Energy Storage Device ◽  
Next Generation ◽  
Liquid Electrolytes

scholarly journals Nanostructure selenium compounds as pseudocapacitive electrodes for high-performance asymmetric supercapacitor

2018 ◽  
Vol 5 (1) ◽  
pp. 171186 ◽  
Author(s):  
Guofu Ma ◽  
Fengting Hua ◽  
Kanjun Sun ◽  
Enke Fenga ◽  
Hui Peng ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Rate Capability ◽  
Negative Electrode ◽  
High Specific Capacitance ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Storage Device ◽  
Asymmetric Supercapacitor ◽  
Capacitance Performance

The electrochemical performance of an energy conversion and storage device like the supercapacitor mainly depends on the microstructure and morphology of the electrodes. In this paper, to improve the capacitance performance of the supercapacitor, the all-pseudocapacitive electrodes of lamella-like Bi 18 SeO 29 /BiSe as the negative electrode and flower-like Co 0.85 Se nanosheets as the positive electrode are synthesized by using a facile low-temperature one-step hydrothermal method. The microstructures and morphology of the electrode materials are carefully characterized, and the capacitance performances are also tested. The Bi 18 SeO 29 /BiSe and Co 0.85 Se have high specific capacitance (471.3 F g –1 and 255 F g –1 at 0.5 A g –1 ), high conductivity, outstanding cycling stability, as well as good rate capability. The assembled asymmetric supercapacitor completely based on the pseudocapacitive electrodes exhibits outstanding cycling stability (about 93% capacitance retention after 5000 cycles). Moreover, the devices exhibit high energy density of 24.2 Wh kg –1 at a power density of 871.2 W kg –1 in the voltage window of 0–1.6 V with 2 M KOH solution.

Estimation of Remaining Useful Lifetime of Lithium-Ion Battery Based on Acoustic Emission Measurements

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Nejra Beganovic ◽  
Dirk Söffker
Keyword(s):  
Acoustic Emission ◽  
Lithium Ion Battery ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Health State ◽  
Battery Management ◽  
Application Fields ◽  
Useful Lifetime

Lithium-ion battery (LIB) utilization as energy storage device in electric and hybrid-electric vehicles, wind turbine systems, a number of portable electrical devices, and in many other application fields is encouraged due to LIB small size alongside high energy density. Monitoring of LIB health state parameters, calculation of additional LIB operating parameters, and the fulfillment of safety requirements are provided through battery management systems. Prediction of remaining useful lifetime (RUL) of LIB and state-of-health (SoH) estimation are identified as still challenging and not completely solved tasks. In this contribution, previous works on RUL/SoH estimation, mainly relied on modeling of underlying electrochemical processes inside LIB, are compared with newly developed approach. The proposed approach utilizes acoustic emission measurements for LIB aging indicators estimation. Developed model for RUL estimation is closely related to frequency spectrum analysis of captured acoustic emission (AE) signal. Features selected from AE measurements are considered as model inputs. The novelty of this approach is the opportunity to estimate RUL/SoH of LIB without necessity to capture some intermediate variables, only indirectly related to RUL/SoH (charging/discharging currents, temperature, and similar). The proposed approach provides the possibility to obtain reliable information about current RUL/SoH without the knowledge about underlying physical processes occurred in LIB. Experimental data sets gathered from LIB aging tests are used for model establishment, training, and validation. The experimental results demonstrate the applicability of the novel approach.

3D Alumina-Graphene Hybrid Nanofibers as a Binder‐Free Cathode for Rechargeable Li‐S Batteries

2019 ◽  
Vol 799 ◽  
pp. 191-196
Author(s):  
Masoud Taleb ◽  
Roman Ivanov ◽  
Irina Hussainova
Keyword(s):  
Energy Density ◽  
Active Material ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Rechargeable Lithium Batteries ◽  
Alumina Nanofibers ◽  
Electrochemically Active ◽  
Binder Free ◽  
Li Ion

Lithium-sulfur (Li-S) batteries are promising as a next generation energy-storage device because their energy density is higher than that of current Li-ion devices. Alumina nanofibers coated with graphene is electrochemically active material with tunable graphene flakes and surface area. Combination of this material with sulfur leads to an improved initial discharge capacity and cycle stability, probably due to improved electrical and ionic transport during electrochemical reactions. Based on this understanding, the resulting graphene sulfur composite showed high and stable specific capacities up to ∼900 mAh/g after 50 cycles, representing a promising cathode material for rechargeable lithium batteries with high energy density.

scholarly journals Comparison of food and beverage products’ availability, variety, price and quality in German and US supermarkets

2020 ◽  
Vol 23 (18) ◽  
pp. 3387-3393
Author(s):  
Nanette Stroebele-Benschop ◽  
Kerstin Wolf ◽  
Katharine Palmer ◽  
Casey J Kelley ◽  
Stephanie B Jilcott Pitts
Keyword(s):  
Fruits And Vegetables ◽  
Food Products ◽  
High Energy ◽  
Cross Sectional Study ◽  
Food Prices ◽  
General Tendency ◽  
Cross Sectional ◽  
Convenience Sample ◽  
The Usa ◽  
The Impact

AbstractObjective:To assess availability, variety, price and quality of different food products in a convenience sample of supermarkets in Germany and the USA.Design:Cross-sectional study using an adapted version of the Bridging the Gap Food Store Observation Form.Setting:Information on availability, quality, price and variety of selected food products in eight German and seven US supermarkets (discount and full service) was obtained and compared by country.Results:A general tendency for lower prices of fruits and vegetables in Germany was observed, while produce quality and variety did not seem to differ between countries, with the exception of the variety of some vegetables such as tomatoes. Chips and cereals did not differ significantly in variety nor price. In both countries, high energy-dense foods were lower in energy costs than lower energy-dense foods.Conclusions:The influence of food prices and availability on consumption should be further explored, including the impact of country differences.

scholarly journals From Bench-Scale to Prototype: Case Study on a Nickel Hydroxide—Activated Carbon Hybrid Energy Storage Device

Batteries ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. 65
Author(s):  
Alberto Adan-Mas ◽  
Pablo Arévalo-Cid ◽  
Teresa Moura e Silva ◽  
João Crespo ◽  
Maria de Fatima Montemor
Keyword(s):  
Activated Carbon ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Cobalt Hydroxide ◽  
Bench Scale ◽  
Geometrical Constraints ◽  
Co Precipitation ◽  
Hybrid Devices

Hybrid capacitors have been developed to bridge the gap between batteries and ultracapacitors. These devices combine a capacitive electrode and a battery-like material to achieve high energy-density high power-density devices with good cycling stability. In the quest of improved electrochemical responses, several hybrid devices have been proposed. However, they are usually limited to bench-scale prototypes that would likely face severe challenges during a scaling up process. The present case study reports the production of a hybrid prototype consisting of commercial activated carbon and nickel-cobalt hydroxide, obtained by chemical co-precipitation, separated by means of polyolefin-based paper. Developed to power a 12 W LED light, these materials were assembled and characterized in a coin-cell configuration and stacked to increase device voltage. All the processes have been adapted and constrained to scalable conditions to ensure reliable production of a pre-commercial device. Important challenges and limitations of this process, from geometrical constraints to increased resistance, are reported alongside their impact and optimization on the final performance, stability, and metrics of the assembled prototype.

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.

scholarly journals A Low-Cost Neutral Aqueous Redox Flow Battery with Dendrite-Free Tin Anode

2021 ◽  
Author(s):  
Hui Chen ◽  
Zhongjie Wang ◽  
Shirui Zhang ◽  
Ming Cheng ◽  
fuyu chen ◽  
...  
Keyword(s):  
Low Cost ◽  
Supporting Electrolyte ◽  
High Energy ◽  
Flow Cell ◽  
Commercial Application ◽  
Storage Device ◽  
Flow Battery ◽  
Active Materials ◽  
Positive Side ◽  
Cycling Performances

Abstract A neutral aqueous tin-based flow battery is proposed by employing Sn2+/Sn as active materials for the negative side, [Fe(CN)6]3-/ Fe(CN)6]4- as active materials for the positive side, and potassium chloride as the supporting electrolyte, and its overall performances and cost for capacity unit are investigated. Cyclic voltammetry is performed and shows that the Sn2+/Sn has outstanding electrochemical behavior. The charging-discharging tests are conducted with the optimized electrolyte composition of 0.2 M [Fe(CN)6]3- and 3 M KCl. It is shown that the flow cell can reach a high energy efficiency of 80% at 10 mA cm-2 and be stably operated at 40 mA cm-2. The 120-cycling test shows that the flow cell can be of superior cycling performances, benefitting from the dendrite-free property of tin. Finally, cost analysis further confirms its competitiveness in price, offering a promising future for commercial application. This work not only forms a promising energy storage device with dendrite-free and low-cost benefits, but also provide a deep insight into its overall behavior, which is highly beneficial to the full understanding and further advancement of the proposed neutral tin-iron flow battery.

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