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    Wyświetlanie 1-11 z 11
    Tytuł:
    The Role of Complementary Potential in Plasma Nitriding Processes of Technical Titanium
    Autorzy:
    Pilarska, M.
    Frączek, T.
    Maźniak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/354692.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plasma nitriding
    active screen
    titanium
    ion nitriding
    Opis:
    This article deals with the testing of surface layers produced on technical titanium Ti99.2 under glow discharge conditions. In order to determine the effect of process temperature on the produced surface layers, nitriding processes were carried out at 700°C and 800°C and for 3 and 5 hours. The research results on evaluating the properties of the obtained surface layers and the characterization of their morphology were presented. The impact of the adopted nitriding process variant on the quality of the obtained layers was evaluated. It was demonstrated that the use of the supplementary potential during the ion nitriding process reduces the unwanted edge effect, which results in a significant increase in the homogeneity of the nitrided layers and improves the functional properties of the technical titanium Ti99.2.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 4; 1637-1642
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Solvent Extraction of Co, Ni and Mn from NCM Sulfate Leaching Solution of Li(NCM)O2 Secondary Battery Scraps
    Autorzy:
    Hong, H. S.
    Kim, D. W.
    Choi, H. L.
    Ryu, S.-S.
    Powiązania:
    https://bibliotekanauki.pl/articles/355577.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    waste recycling
    NCM-system lithium ion battery
    reduction
    leaching
    Opis:
    As a part of the study on recycling Li(NCM)O2 lithium-ion battery scraps, solvent extraction experiments were performed using different extraction agents such as PC88A, Cyanex272 and D2EHPA to separate Co, Ni and Mn from the leaching solution. When the ratio of Mn to Ni was about 0.4 in the leaching solution, the separation factor for Co and Mn was found to be less than 10 so that the separation of Co and Ni was insufficient. When solvent extraction was done using the solution with the lower Mn/Ni ratio of 0.05 where Mn was removed by potassium permanganate and chlorine dioxide, more than 99% of Mn could be extracted through five courses of extraction using 30vol% D2EHPA while the extraction rates of Co and Ni were around 17% and 11%, respectively. In the case that Mn was removed from the solution, the extraction rate of Co was higher than 99% whereas less than 7% Ni was extracted using Cyanex272 suggesting that Co and Ni elements were effectively separated.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1011-1014
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laser Granulometer as an Useful Tool for Selection of Appropriate Membranes Used in the MIEX®DOC-UF/MF Hybrid Process
    Autorzy:
    Rajca, M.
    Bray, R. T.
    Fitobór, K.
    Gołombek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/354202.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ion exchange
    MIEX® resin
    water treatment
    ultrafiltration
    microfiltration
    laser granulometer
    SEM
    Opis:
    In the study, particle size distribution of the MIEX® resin was presented. Such analyses enable to determinate whether presence of fine resin fraction may be the reason for unfavorable membrane blocking during water purification by the hybrid MIEX®DOC – microfiltration/ultrafiltration systems. Granulometric analysis of resin grains using the laser diffraction particle size analyzer (laser granulometer) was carried out as well as the microscopic analysis with scanning electron microscope. The following samples were analyzed: samples of fresh resin (a fresh resin – not used in water treatment processes) and samples of repeatedly used/regenerated resin that were collected to analysis during mixing and after sedimentation process. Particle size distribution was slightly different for fresh resin and for repeatedly used/regenerated resin. The grains sizes of fresh resin reached approximately 60 μm (d10), 120 μm (d50) and 220 μm (d90). Whereas the sizes of repeatedly used/regenerated resin were about 15 μm (d10), 40 μm (d50) and 115-130 μm (d90). The smallest resin grains sizes were in the range of 0.3-0.45 μm. This ensures that the ultrafiltration membranes retain all resin grains, even the smallest ones. Whereas the microfiltration membranes must be appropriately selected to guarantee full separation of the resin grains and at the same time to exclude a membrane pores blocking.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 3; 1133-1140
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Towards cubic modification of Li7La3Zr2O12 compound by mechanical milling and annealing of powders
    Autorzy:
    Oleszak, D.
    Kurowski, B.
    Pikula, T.
    Pawlyta, M.
    Senna, M.
    Suzuki, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/354963.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lithium-ion batteries
    solid state electrolyte
    mechanical milling
    XRD
    DSC/TG
    Opis:
    The aim of these studies was to obtain single phase cubic modification of Li7La3Zr2O12 by mechanical milling and annealing of La(OH)3, Li2CO3 and ZrO2 powder mixture. Fritsch P5 planetary ball mill, Rigaku MiniFlex II X-ray diffractometer, Setaram TG-DSC 1500 analyser and FEI Titan 80-300 transmission electron microscope were used for sample preparation and investigations. The applied milling and annealing parameters allowed to obtain the significant contribution of c-Li7La3Zr2O12 in the sample structure, reaching 90%. Thermal measurements revealed more complex reactions requiring further studies.
    Źródło:
    Archives of Metallurgy and Materials; 2019, 64, 1; 13-16
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electrochemical Properties of Flexible Anode with SnO2 Nanopowder for Sodium-Ion Batteries
    Autorzy:
    Kim, Huihun
    Sadan, Milan K.
    Kim, Changhyeon
    Choi, Ga-In
    Seong, Minjun
    Cho, Kwon-Koo
    Kim, Ki-Won
    Ahn, Jou-Hyeon
    Ahn, Hyo-Jun
    Powiązania:
    https://bibliotekanauki.pl/articles/2049149.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    word
    sodium-ion batteries
    SnO2 anode
    flexible electrode
    nano SnO2 particles
    ether based electrolyte
    Opis:
    Sodium-ion batteries (SiBs) have attracted substantial interest as an alternative to lithium-ion batteries because of the low cost. There have been many studies on the development of new anode materials that could react with sodium by conversion mechanism. SnO2 is a promising candidate due to its low cost and high theoretical capacity. However, SnO2 has the same problem as other anodes during the conversion reaction, i.e., the volume of the anode repeatedly expands and contracts by cycling. Herein, anode is composed of carbon nanofiber embedded with SnO2 nanopowder. The resultant electrode showed improvement of cyclability. The optimized SnO2 electrode showed high capacity of 1275 mAh g-1 at a current density of 50 mA g-1. The high conductivity of the optimized electrode resulted in superior electrochemical performance.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 4; 931-934
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithium-Ion Conductive Film Membrane of Li0.3La0.57TiO2 Perovskite Structure and its Application in Li-Air Batteries
    Autorzy:
    Rhee, Chang-Kyu
    Chun, Young-Bum
    Kang, Suk Hoon
    Kim, Whung-Whoe
    Cao, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2203738.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lithium-ion conductive film
    membrane
    Li0.3La0.57TiO2
    perovskite structure
    Li-air batteries
    Opis:
    Impacts of precursor solution recipe, processing parameters, and pellet thickness on the lithium ionic conductivity of the ceramic materials with perovskite structure of Li0.3La0.57TiO3 were investigated and new method was proposed to synthesize Li0.3La0.57TiO3 solid state electrolyte. The results showed that ionic conductivity of Li0.3La0.57TiO3 membrane which was synthesized by firstly forming colloidal TiO2 (i.e., TiO2 sol) and then Li+ and La+ were added to the colloidal TiO2 was on the order of 10-5 S/cm. It also showed that the temperatures corresponding to a full decomposition for L0.3La0.57TiO3 is about 750°C and materials start forming perovskite structure when temperature reaches about 900°C and the lithium ionic conductivity gains about 21% increase when the pellet thickness is reduced to about ¼
    Źródło:
    Archives of Metallurgy and Materials; 2023, 68, 1; 191--194
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recovery Of Electrodic Powder From Spent Lithium Ion Batteries (LIBs)
    Odzysk proszku elektrodowego z zużytych akumulatorów litowo-jonowych
    Autorzy:
    Shin, S. M.
    Jung, G. J.
    Lee, W-J.
    Kang, C. Y.
    Wang, J. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/354084.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lithium ion battery
    electrodic powder
    cobalt
    lithium
    thermal treatment
    bateria litowo-jonowa
    proszek elektrodowy
    kobalt
    lit
    obróbka termiczna
    Opis:
    This study was focused on recycling process newly proposed to recover electrodic powder enriched in cobalt (Co) and lithium (Li) from spent lithium ion battery. In addition, this new process was designed to prevent explosion of batteries during thermal treatment under inert atmosphere. Spent lithium ion batteries (LIBs) were heated over the range of 300°C to 600°C for 2 hours and each component was completely separated inside reactor after experiment. Electrodic powder was successfully recovered from bulk components containing several pieces of metals through sieving operation. The electrodic powder obtained was examined by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and atomic absorption spectroscopy (AA) and furthermore image of the powder was taken by scanning electron microscopy (SEM). It was finally found that cobalt and lithium were mainly recovered to about 49 wt.% and 4 wt.% in electrodic powder, respectively.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1145-1149
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study on Recovery of Valuable Metals in Spent Lithium-Ion Batteries by Al2O3-SiO2-CaO-Fe2O3 Slag System
    Autorzy:
    Moon, Tae Boong
    Han, Chulwoong
    Hyun, Soong-Keun
    Park, Sung Cheol
    Son, Seong Ho
    Lee, Man Seung
    Kim, Yong Hwan
    Powiązania:
    https://bibliotekanauki.pl/articles/2049176.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    spent lithium-ion battery
    smelting
    Al2O3-SiO2-CaO-Fe2O3
    recovery
    slag
    Opis:
    This study investigated the recovery behavior of valuable metals (Co, Ni, Cu and Mn) in spent lithium ion-batteries based on Al2O3-SiO2-CaO-Fe2O3 slag system via DC submerged arc smelting process. The valuable metals were recovered by 93.9% at the 1250°C for 30 min on the 20 Al2O3-40SiO2-20Cao-20Fe2O3 (mass%) slag system. From the analysis of the slag by Fourier-transform infrared spectroscopy, it was considered that Fe2O2 and Al2O3 acted as basic oxides to depolymerize SiO4 and AlO4 under the addition of critical 20 mass% Fe2O3 in 20 Al2O3-40SiO2-Cao-Fe2O3 (Cao + Fe2O3 = 40 mass%). in addition, it was observed that the addition of Fe2O3 ranging between 20 and 30 mass% lowers the melting point of the slag system.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 4; 983-986
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Atomistic Analysis Of Radiation-Induced Segregation In Ion-Irradiated Stainless Steel 316
    Analiza w skali atomowej indukowanej promieniowaniem segregacji w stali nierdzewnej 316
    Autorzy:
    Lee, G.-G.
    Jin, H.-H.
    Chang, K.
    Lee, B. H.
    Kwon, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/354713.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    atom probe tomography (APT)
    radiation-induced segregation (RIS)
    ion irradiation
    irradiation defects
    stainless steel
    APT
    RIS
    stal nierdzewna
    segregacja
    Opis:
    Stainless steel (SS) is a well-known material for the internal parts of nuclear power plants. It is known that these alloys exhibit radiation-induced segregation (RIS) at point defect sinks at moderate temperature, while in service. The RIS behavior of SS can be a potential problem by increasing the susceptibility to irradiation-assisted stress corrosion cracking. In this work, the RIS behavior of solute atoms at sinks in SS 316 irradiated with Fe4+ ions were characterized by atom probe tomography (APT). There were torus-shaped defects along with a depletion of Cr and enrichment of Ni and Si. These clusters are believed to be dislocation loops resulting from irradiation. The segregation of solutes was also observed for various defect shapes. These observations are consistent with other APT results from the literature. The composition of the clusters was analyzed quantitatively almost at the atomic scale. Despite the limitations of the experiments, the APT analysis was well suited for discovering the structure of irradiation defects and performing a quantitative analysis of RIS in irradiated specimens.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1179-1184
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ion-Exchange Reaction Of A-Site In A2Ta2O6 Pyrochlore Crystal Structure
    Reakcja wymiany jonowej w podsieci a w strukturze krystalicznej pirochloru A2Ta2O6
    Autorzy:
    Matsunami, M.
    Hashizume, T.
    Saiki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/351274.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    K2Ta2O6
    Na2Ta2O6
    ion-exchange
    pyrochlore structure
    perovskite structure
    wymiana jonowa
    struktura pirochloru
    struktura perowskitu
    Opis:
    Na+ or K+ ion rechargeable battery is started to garner attention recently in Place of Li+ ion cell. It is important that A+ site ion can move in and out the positive-electrode materials. When K2Ta2O6 powder had a pyrochlore structure was only dipped into NaOH aqueous solution at room temperature, Na2Ta2O6 was obtained. K2Ta2O6 was fabricated from a tantalum sheet by a hydrothermal synthesize with KOH aqueous solution. When Na2Ta2O6 was dipped into KOH aqueous solution, K2Ta2O6 was obtained again. If KTaO3 had a perovskite structure was dipped, Ion-exchange was not observed by XRD. Because a lattice constant of pyrochlore structure of K-Ta-O system is bigger than perovskite, K+ or Na+ ion could shinny through and exchange between Ta5+ and O2− ion site in a pyrochlore structure. K+ or Na+ ion exchange of A2Ta2O6 pyrochlore had reversibility. Therefore, A2Ta2O6 had a pyrochlore structure can be expected such as Na+ ion rechargeable battery element.
    Akumulatory w którym jako nośniki ładunku wykorzystywane są jony Na+ lub K+ budzą coraz większe zainteresowanie jako alternatywa dla ogniw litowo-jonowych. Należy podkreślić, że kationy w podsieci A+ potrafią się przemieszczać z- i do dodatnio naładowanych materiałów elektrodowych. Gdy proszek K2Ta2O6 posiadający strukturę pirochloru zanurzono w roztworze wodnym NaOH w temperaturze pokojowej, otrzymano Na2Ta2O6. K2Ta2O6 otrzymano poprzez obróbkę arkuszu tantalu metodą hydrotermalną wykorzystując roztwór wodny KOH. Gdy zanurzono Na2Ta2O6 w wodnym roztworze KOH, otrzymano z powrotem K2Ta2O6. Natomiast, gdy zanurzono KTaO3 o strukturze perowskitu, nie obserwowano wymiany jonowej. Dlatego, że stała sieciowa w strukturze pirochloru układu K-Ta-O jest większa niż w przypadku perowskitu, jony K+ lub Na+ mogą się poruszać i wymieniać w podsieci Ta5+ i O2− w pirochlorze. Wymiana jonów K+ lub Na+ w pirochlorze A2Ta2O6 jest odwracalna. Z tego powodu można się spodziewać, że związek A2Ta2O6 o strukturze pirochloru może znaleźć potencjalne zastosowanie jako element akumulatora pracującego z jonami Na+.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2A; 941-944
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis Of Fe Doped LiMn2O4 Cathode Materials For Li Battery By Solid State Reaction
    Synteza materiału katodowego LiMn2O4 domieszkowanego Fe metodą reakcji w fazie stałej do zastosowania w bateriach Li
    Autorzy:
    Horata, N.
    Hashizume, T.
    Saiki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/355902.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    doped LiMn2O4
    lithium ion battery
    cathode material
    solid state reaction
    domieszkowanie LiMn2O4
    bateria litowo-jonowa
    materiały katodowe
    reakcja w fazie stałej
    Opis:
    LiFe0.1Mn1.9O4 is expected as a cathode material for the rechargeable lithium-ion batteries. LiMn2O4 has been received attention because this has advantages such as low cost and low toxicity compared with other cathode materials of LiCoO2 and LiNiO2. However, LiMn2O4 has some problems such as small capacity and no long life. LiMn2O4 is phase transformation at around human life temperature. One of the methods to overcome this problem is to stabilize the spinel structure by substituting Mn site ion in LiMn2O4 with transition metals (Al, Mg, Ti, Ni, Fe, etc.). LiFe0.1Mn1.9O4 spinel was synthesized from Li2CO3, Fe2O3 and MnO22 powder. The purpose of this study is to report the optimal condition of Fe doped LiFe0.1Mn1.9O4. Li2CO3, Fe2O3, and MnO2 mixture powder was heated up to 1173 K by TG-DTA. Li2CO3 was thermal decomposed, and CO2 gas evolved, and formed Li2O at about 800 K. LiFe0.1Mn1.9O4 was synthesized from a consecutive reaction Li2O, Fe2O3 and MnO2 at 723 ~ 1023 K. Active energy is calculated to 178 kJmol−1 at 723 ~ 1023 K. The X-ray powder diffraction pattern of the LiFe0.1Mn1.9O4 heated mixture powder at 1023 K for 32 h in air flow was observed.
    LiFe0.1Mn1.9O4 jest obiecującym materiałem katodowym do zastosowania w bateriach litowo-jonowych z możliwością wielokrotnego ładowania. LiMn2O4 cieszy się dużym zainteresowaniem z powodu niskiego kosztu otrzymywania oraz niskiej toksyczności w porównaniu z innymi materiałami katodowymi typu LiCoO2 and LiNiO2 czy LiNiO2. Jednak LiMn2O4 posiada również wady: niską pojemność i krótką żywotność. Dodatkowo, przemiana fazowa LiMn2O4 zachodzi w temperaturze pokojowej. Jedną z metod rozwiązania tego problemu jest stabilizacja struktury spinelu poprzez podstawienie jonu Mn w sieci LiMn2O4 metalami przejściowymi (Al, Mg, Ti, Ni, Fe, itp.). Spinel LiFe0.1Mn1.9O4 syntezowano z proszków Li2CO3, Fe2O3 i MnO22. Celem badań było znalezienie optymalnych warunków syntezy spinelu LiFe0.1Mn1.9O4 domieszkowanego Fe. Mieszaninę proszków Li2CO3, Fe2O3 i MnO2 poddano analizie TG-DTA. W temperaturze 800 K Li2CO3 uległ rozkładowi termicznemu, w wyniku czego powstało CO2 i Li2O. LiFe0.1Mn1.9O4 zsyntezowano w wyniku reakcji następczej pomiędzy Li2O, Fe2O3 i MnO2 w temperaturze 723 ~ 1023 K. Energię aktywacji oszacowano na 178 kJmol−1 w zakresie temperatur 723 ~ 1023 K. Przeprowadzono także analizę XRD proszku LiFe0.1Mn1.9O4 wygrzewanego w 1023 K przez 32 godz. w warunkach przepływu powietrza.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2A; 949-951
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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