Sökning: "Ion Current"

Visar resultat 61 - 65 av 353 avhandlingar innehållade orden Ion Current.

  1. 61. Characterization methods and modelling for Li-ion batteries: entropy, impedance, pressure, diffusivity & temperature swings induced aging

    Författare :Zeyang Geng; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; characterization methods; swelling; temperature swing; model; impedance; lifetime; Li-ion batteries; thermal; pressure; entropy; aging;

    Sammanfattning : Lithium-ion batteries are commonly used for energy storage systems, and temperature is one key impact factor on the cell performance and lifetime. In literature, the focus has been on the ambient temperature of the test condition, and there is little discussion about how the temperature swing during cycling affects the battery lifetime. LÄS MER

  3. 62. Experimental Characterization of Electrodes and Multi-Scale Modeling of Swelling Induced Stresses in Lithium-ion Batteries

    Författare :Priyank Gupta; Peter Gudmundson; Göran Lindbergh; Erik Olsson; Elham Sahraei; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lithium-ion batteries; mechanical characterization; multiscale modeling; homogenization; Solid Mechanics; Hållfasthetslära;

    Sammanfattning : Over the last few decades, rechargeable lithium-ion batteries have been extensively used in portable instruments due to their high energy density and low self-discharge rate. Recently, lithium-ion batteries have emerged as the most promising candidate for electric vehicles and stationary energy storage. LÄS MER

  4. 63. Durability Aspects of Fast Charging, Mechanical Constraint, and Inhomogeneity in Lithium-Ion Batteries

    Författare :Abdilbari Shifa Mussa; Rakel Wreland Lindström; Göran Lindbergh; Gregory Offer; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lithium-ion batteries; NMC 111 ; Graphite; Cycle ageing; Fast-charging; Inhomogeneity; Current distribution; Pressure; Curvature; Temperature.; Chemical Engineering; Kemiteknik;

    Sammanfattning : The development of lithium-ion batteries with higher energy and power density, better safety, and lower cost has significantly contributed to the increased market share of electric vehicles (EVs) in the last decade. However, the expectations of end-users of EVs still require a continuous quest for better performance. LÄS MER

  5. 64. Ion channels in drug discovery : focus on biological assays

    Författare :Kim Dekermendjian; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Ion channels; GABAA receptor; sodium channels; TRPM8; drug discovery; high throughput screening assays; FLIPR; automated electrophysiology;

    Sammanfattning : Ion channels are well characterised drug targets. However, the techniques used to study ion channel pharmacology have not been particularly applicable to modern drug discovery. LÄS MER

  7. 65. Effects of pyrolysis and incineration on the chemical composition of Li-ion batteries and analysis of the by-products

    Författare :Gabriele Lombardo; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NMC batteries; carbothermic reduction; pyrolysis; Lithium-ion batteries; metal recycling;

    Sammanfattning : In the present work, the effects of pyrolysis and incineration on the composition of Li-ion battery cell materials and their dependence on treatment time and temperature were investigated. Waste from Li-ion batteries was treated at 400˚, 500˚, 600˚, and 700˚C for 30, 60, and 90 minutes. LÄS MER