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Wyświetlanie 1-15 z 35
Tytuł:
Composite La0.6Sr0.4Co0.8Fe0.2O3/Ag cathode for SoFCs with Ce0.8Sm0.2O1.9 electrolyte
Kompozytowa katoda La0.6Sr0.4Co0.8Fe0.2O3/Ag do stało-tlenkowych ogniw paliwowych z elektrolitem Ce0.8Sm0.2O1.9
Autorzy:
Mosiałek, M.
Dudek, M.
Wojewoda-Budka, J.
Powiązania:
https://bibliotekanauki.pl/articles/351192.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
SOFC
katoda
LSCF
srebro
SDC
cathode
silver
Opis:
nfluence of the short time external polarization of silver electrode contacted Ce0.8Sm0.2O1.9 electrolyte was studied. Silver is moving along the Ce0.8Sm0.2O1.9 surface during the -0.5 V cathodic polarization at 600°C. It caused both the increase of the electrode - electrolyte contact area and the triple phase boundary length but also decrease of electrolyte and polarization resistances. Deposit of silver oxide was found at the place where the electrode polarized at the potential of 0.5 V contacted the electrolyte and around. The decrease of electrolyte and polarization resistance was smaller but more stable in this case. Composite cathodes were obtained on Ce0.8Sm0.2O1.9 electrolyte with the double step sintering procedure. Silver introduced into a La0.6Sr0.4Co0.8Fe0.2O3 cathode improved a performance of a La0.6Sr0:4Co0.8Fe0.2O3|Ce0.8Sm0.2O1.9|Ni cell by 33%.
Zbadano wpływ zewnętrznej polaryzacji na elektrodę srebrną w kontakcie z elektrolitem tlenkowym Ce0:8Sm0:2O1:9. W czasie polaryzacji katodowej przy potencjale elektrody równym -0.5 V w temperaturze 600 C srebro migruje po powierzchni elektrolitu. Powoduje to zarówno wzrost powierzchni kontaktu elektrody z elektrolitem jak i długości linii styku trzech faz. Powoduje to również spadek rezystancji elektrolitu oraz rezystancji polaryzacyjnej. W miejscu styku elektrody polaryzowanej potencjałem 0,5 V i elektrolitu oraz w jego pobliżu stwierdzono obecność tlenku srebra. Spadek rezystancji elektrolitu i rezystancji polaryzacyjnej był w tym przypadku mniejszy ale bardziej stabilny. Wykonano kompozytowe katody Ag/La0:6Sr0:4Co0:8Fe0:2O3 metodą dwustopniowego spiekania na podłożu elektrolitu Ce0:8Sm0:2O1:9. Wprowadzenie srebra do struktury katody La0:6Sr0:4Co0:8Fe0:2O3 podniosło moc ogniwa La0:6Sr0:4Co0:8Fe0:2O3jCe0:8Sm0:2O1:9/Ni o 33%.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 1; 275-281
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Li-S battery recycling
Autorzy:
Siczek, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/409532.pdf
Data publikacji:
2019
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
lithium-sulfur battery
recycling
anode
cathode
electrolyte
Opis:
Lithium-ion batteries are not situable for electric vehicles with high millage, military power supplies and fixed power networks. Therefore, the Li-S batteries have been intensively investigated, due to the high capacity, low cost, widespread source, and nontoxicity. The development of Li-S batteries causes increasing need to find the methods for their recycling. Some of them are discussed in the paper. The recycling of Li-S cell relates to its anode, cathode, electrolyte, binder and separator. The Li-S battery should be fully charged before recycling. There are potential methods for recycling of lithium from anodes, especially by re-melting. It is also possible to recycle some materials from the cathodes, especially sulfur by re-melting and graphite by dry crushing, Eco-bat Technologies method or the method investigated by Xiang et al. There is no effective recycling methods for electrolytes, binders and separators. It is necessary to carry out further studies on them.
Źródło:
Research in Logistics & Production; 2019, 9, 2; 125-135
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Sodium Penetration on Microscopic Deformation of Carbon-Based Cathode Materials During Aluminum Electrolysis
Autorzy:
Liu, Hitao
Huang, Yunhong
Wang, Wei
Zhang, Ziyang
Dang, Hengyao
Powiązania:
https://bibliotekanauki.pl/articles/2106608.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
carbon cathode
microstructure
sodium penetration
dislocation
kink band
Opis:
In this paper, the macroscopic and microscopic deformation caused by sodium penetration in the carbon cathode has been studied during aluminum electrolysis. The distributions of sodium concentration in the carbon cathode has been measured by SEM-EDS. The microstructure change caused by the gradient of the sodium concentration in the carbon cathode has been studied using transmission electron microscopy (TEM). The results indicate that sodium penetration decreases with the increase of the penetration depth. The stresses caused by the gradient of the sodium concentration result in a remarkable change for the microstructure of the carbon cathode. The formation of dislocations resulting in dislocation arrays and the development of kink band networks bring about material damage growth and possibly subsequent weakening of the cathode. These results can provide useful information that is helpful in developing an improved comprehending of the microscopic deformation mechanism of the carbon cathode during aluminum electrolysis.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 2; 779--785
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of the Nickel-Cobalt-Manganese Cathode Material Using Recycled Nickel as Precursors from Secondary Batteries
Autorzy:
Jung, Hang-Chul
Han, Deokhyun
Kim, Dae-Weon
Ahn, Byungmin
Powiązania:
https://bibliotekanauki.pl/articles/2049177.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
secondary battery
nickel
recycling
Taylor reaction
cathode materials
Opis:
As the amount of high-capacity secondary battery waste gradually increased, waste secondary batteries for industry (high-speed train & HEV) were recycled and materialization studies were carried out. The precipitation experiment was carried out with various conditions in the synthesis of LiNi0.6Co0.2Mn0.2O2 material using a Taylor reactor. The raw material used in this study was a leaching solution generated from waste nickel-based batteries. The nickel-cobalt-manganese (NCM) precursor was prepared by the Taylor reaction process. Material analysis indicated that spherical powder was formed, and the particle size of the precursor was decreased as the reaction speed was increased during the preparation of the NCM. The spherical NCM powder having a particle size of 10 μm was synthesized using reaction conditions, stirring speed of 1000 rpm for 24 hours. The NCM precursor prepared by the Taylor reaction was synthesized as a cathode material for the LIB, and then a coin-cell was manufactured to perform the capacity evaluation.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 987-990
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Novel Process for Recovery of Key Elements from Commercial Cathode Material of End-of-Life Lithium-Ion Battery
Autorzy:
Wang, Jei-Pil
Powiązania:
https://bibliotekanauki.pl/articles/2049270.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lithium manganese oxide
cathode material
thermal reaction
lithium
Opis:
A novel process to recover lithium and manganese oxides from a cathode material (LiMn2O4) of spent lithium-ion battery was attempted using thermal reaction with hydrogen gas at elevated temperatures. A hydrogen gas as a reducing agent was used with LiMn2O4 powder and it was found that separation of Li2O and MnO was taken place at 1050°C. The powder after thermal process was washed away with distilled water and only lithium was dissolved in the water and manganese oxide powder left behind. It was noted that manganese oxide powder was found to be 98.20 wt.% and the lithium content in the solution was 1,928 ppm, respectively.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 3; 745-750
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cold field-emission cathode noise analysis
Autorzy:
Knápek, A.
Grmela, L.
Šikula, J.
Šik, O.
Powiązania:
https://bibliotekanauki.pl/articles/220678.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cold field-emission cathode
noise diagnostics
epoxy coating
Opis:
Noise diagnostics has been performed on the cold field-emission cathode in high-vacuum. The tested cold fieldemission cathode, based on tungsten wire with ultra-sharp tip coated by epoxy was designed to meet the requirements of transmission electron microscopy, which uses a small and stable source of electrons. Current fluctuations are reduced by improving the structure and fabrication technology. Noise was measured both in time and frequency domains, which gives information about current fluctuations and also about charge transport. Mutual correlation between the noise spectral density, extractor voltage and beam brightness was analyzed.
Źródło:
Metrology and Measurement Systems; 2012, 19, 2; 417-422
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the State of Stress in Cathode Block of an Aluminium Electrolytic Cell During Formation of Connection with the Steel Pin by Cast Iron Pouring
Autorzy:
Piekło, J.
Maj, M.
Powiązania:
https://bibliotekanauki.pl/articles/352715.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium electrolytic cell
cathode section
cast iron
FEM calculations
Opis:
The article presents various aspects of the analysis of the state of stress in carbon block induced by the effect of temperature when a steel pin is connected to the block by pouring a shaped groove with cast iron. Changes in the temperature and state of stress in the block were examined by FEM (Abaqus program). The numerical model was validated by experimental measurements of pin deflection during pouring of the groove with cast iron.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 4; 1869-1874
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Practical Application of the Concept of Separating the Zone of Overheating and Reducing the Stress Level in Cathode Block of an Aluminium Electrolytic Cell During Formation of Connection with the Steel Pin by Cast Iron Pouring
Autorzy:
Piekło, J.
Maj, M.
Powiązania:
https://bibliotekanauki.pl/articles/355912.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium electrolytic cell
cathode section
cast iron
FEM calculations
Opis:
The article presents the concept of division of a carbon block into single cathode sections to reduce stresses that occur during thermal shock accompanying the operation of pouring cast iron into a shaped groove in which the current-carrying steel pin is mounted. The temperature field and the state of stress were determined by FEM. Experimental measurements were used to determine the core displacement during pouring operation. The calculations were verified by thermovision and photoelastic method. Based on the temperature field and stress field analysis, a method for the block division into sections has been proposed, resulting in a significant reduction of the stress level.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 1; 67-71
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical methods for the preservation of crustaceous wastes from shellfish processing
Autorzy:
Kuprina, E. E.
Bobylev, V. S.
Kirillov, A. I.
Powiązania:
https://bibliotekanauki.pl/articles/1035216.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
anode fraction
cathode fraction
crustaceans
electrolyzer
preservation of crustaceous wastes
Opis:
The developed environmentally safe electrochemical methods for the preservation of crustaceous wastes from shellfish processing can be used both at sea and ashore. This technology makes possible long-term storage of crustaceous waste at unnormalized positive temperatures with simultaneous shell deproteinization. Due to the mild exposure conditions the electrochemical methods allow to preserve the high quality of valuable components (chitin, proteins, lipids, carotinoids and others) and to carry out comprehensive processing. The preservation of expired crustaceous waste with increased original bacterial content was found possible.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2013, 18, 18; 5-12
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Signal-to-noise ratio improvement in scanning television optical microscope
Autorzy:
Prudyus, I.
Shkliarskyi, V.
Hudz, B.
Rehush, A.
Powiązania:
https://bibliotekanauki.pl/articles/114383.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
scanning television optical microscope
cathode ray tube
noise
photomultiplier tube
Opis:
Scanning television optical microscope is designed to investigate microscopic objects, larger than 0.1 micrometers. To illuminate microobject with this microscope there is used a high resolution cathode ray tube. Low illumination of the tested microobject lets to explore living microorganisms in real time. The current microscopic image has low contrast. To increase image contrast it is necessary to increase microscope sensitivity. The main sources of noise in scanning television optical microscope are: 1) composite video shaper; 2) photomultiplier tube; and 3) scanning cathode ray tube. Detailed analysis of noise sources in video signal of the microscope is presented in the paper. Equations describing the sources are given. Dependencies are plotted and discussed.
Źródło:
Measurement Automation Monitoring; 2015, 61, 8; 406-409
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Error analysis of current formated by precision voltage-current converter loaded by inductance
Autorzy:
Shkliarskyi, V.
Vasylyuk, V.
Balanyuk, Y.
Powiązania:
https://bibliotekanauki.pl/articles/114381.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
scanning microscope
cathode ray tube
microobject
luminous raster
current control errors
Opis:
In scanning microscope the cathode ray tube of high resolution is used. The screen of this tube is formed by raster consisting of 4096×4096 luminous elements, composing the image. This raster allows to form images of investigated microobject on the screen in a wide range without loss of resolution. The accuracy of imaging on the screen depends on the current setting errors in inductive coils of deflection system. The ways of reducing the static error of the current set in a voltage-current converter are proposed.
Źródło:
Measurement Automation Monitoring; 2015, 61, 8; 403-405
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ materiału anody i katody na charakter wyładowania jarzeniowego
The impact of the anode and cathode material on the character of glow discharge
Autorzy:
Fjałkowski, Z.
Wiśniewski, G.
Habrych, M.
Kralewska, K.
Powiązania:
https://bibliotekanauki.pl/articles/187439.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
anoda
katoda
wyładowanie jarzeniowe
materiał stykowy
anode
cathode
contact materials
glow discharge
Opis:
W artykule przedstawiono wyniki badań wpływu rodzaju materiału stykowego anody i katody na efekt przejścia stałoprądowego łuku elektrycznego małej mocy w wyładowanie jarzeniowe. Ponadto przedstawiono wyniki analizy spektralnej powierzchni stykowych materiałów użytych do badań.
The article features the test results of the impact of the anode and cathode contact material on the DC transition effect of low-power electric arc into glow discharge. Additionally, the results of the spectrum analysis of contact materials used for testing was carried out.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2011, R. 49, nr 7, 7; 105-111
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of cathode deactivation upon hydrogen evolution reaction on nickel-coated carbon fibre
Autorzy:
Pierozynski, B.
Powiązania:
https://bibliotekanauki.pl/articles/363150.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
dezaktywacja katod
HER
NiCCF
niklowane włókno węglowe
cathode deactivation
nickel-coated carbon fibre
Opis:
The process of cathodic evolution of hydrogen at metal (or composite) electrodes is one of the most widely studied electrochemical reactions. It has important technological significance in the fields of fuel-cell and battery development. Nickel-coated carbon fibre (NiCCF) offers an attractive, large surface-area catalyst material for the process of cathodic evolution of hydrogen. Such composite materials could potentially be used to produce large area, woven cathodes for the generation of H2 in commercial electrolysers. Kinetics of the hydrogen evolution reaction (HER) at commercially available NiCCF material (Toho-Tenax fibre) were studied in 30 wt.% KOH solution, at room temperature over the cathodic overpotential range: -100 to - 500 mV/RHE. Significance of the cathode deactivation effect (in relation to the corresponding values of the charge-transfer resistance and the cathode potential parameters) upon continuous alkaline water electrolysis has also been discussed.
Źródło:
Environmental Biotechnology; 2010, 6, 1; 1-5
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microbial Fuel Cell With Cu-B Cathode Powering With Wastewater From Yeast Production
Autorzy:
Włodarczyk, B.
Włodarczyk, P. P.
Powiązania:
https://bibliotekanauki.pl/articles/124258.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
microbial fuel cell
cathode
wastewater treatment
yeast industry
renewable energy sources
environment engineering
Opis:
With the increasing standard of living, energy consumption increases as well. So, waste production, including wastewater, increases as well. One of the types of wastewater is wastewater from yeast industry. Wastewater from this industry has not only a high pollutants load but it is produced in great amounts as well. Technical devices that can accomplish the wastewater treatment and electricity production from wastewater is a microbial fuel cell. In microbial fuel cells activated sludge bacteria can be used for electricity production during wastewater treatment. The possibility of using the Cu-B alloy as cathode catalyst for microbial fuel cells to wastewater treatment of wastewater from yeast industry is presented in this paper. The reduction time for COD with the use of microbial fuel cell with the Cu-B catalyst (with 5, 10 and 15% amount of B) is similar to the reduction time with aeration. The obtained power (4.1 mW) and the amount of energy (0.93 Wh) are low. But, if one can accept a longer COD reduction time, the obtained amount of energy will allow elimination of the energy needed for reactor aeration.
Źródło:
Journal of Ecological Engineering; 2017, 18, 4; 224-230
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Synthesis Gas as Fuel for a Solid Oxide Fuel Cell
Autorzy:
Alvarez-Cedillo, Jesus A.
Alvarez-Sanchez, Teodoro
Sandoval-Gomez, Raul J.
Gonzalez-Vasquez, Alexis
Sarabia-Alonso, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/2202146.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
anode
cathode
electrolyte
biomass
syngas
solid oxide fuel cell
mathematical model
steady state
Opis:
There is a real need to use various efficient energy supply systems that are not aggressive towards the global environment. Hydrogen has been seen in different research papers presented in the literature as an essential fuel to generate energy in various energy storage systems. As it is well-known, it is possible to generate renewable electricity using electrolysis. The hydrogen produced can be sold as fuel for various systems, most notably its use in solid oxide fuel cells and a host of modern applications today. Current low-temperature fuel cells are ideal for hydrogen operation, but are not suitable for hydrogen mixtures. In this article, a mathematical analysis was carried out to generate electrical energy in a fuel cell, fed with synthesis gas from the residual biomass gasification process; the primary interest was the generation of electrical energy, solid oxide fuel cell (SOFC), which operate at the temperature of the gas at the outlet of the gasifier were analyzed. The practical efficiency obtained and the theoretical results of the SOFC operation were shown.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 35--41
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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