Sökning: "Polarization curve"

Hittade 5 uppsatser innehållade orden Polarization curve.

  1. 1. Model on degradation of PEM fuel cells in marine applications

    Master-uppsats, KTH/Kemiteknik

    Författare :Erik Östling; [2021]
    Nyckelord :Proton exchange membrane fuel cell PEMFC ; marine applications; durability; lifetime prediction; empirical model; PEM bränsleceller; marina tillämpningar; hållbarhet; livslängdsberäkning; empirisk modell;

    Sammanfattning : Sjöfarten står för 3 % av världens totala växthusgaser och är idag högst beroende av fossila bränslen. Ett alternativ för att gå över till en fossilfri flotta är användning av bränsleceller och vätgas som drivmedel. LÄS MER

  3. 2. Improvement of conductivity measurement in liquid chromatography

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Jerker Ortman; [2021]
    Nyckelord :conductivity; liquid chromatography; electronics; sensors; measurement techniques;

    Sammanfattning : In liquid chromatography the ability to measure the conductivity is essential toreach a good result. This is done by applying a current through the electrolyte ofinterest and measuring the voltage drop over the electrolyte. The conductivity isthen calculated with the known current and the measured voltage. LÄS MER

  4. 3. Applied State of Health Estimation Methods for Lithium-ion Batteries

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Simon Malmberg; [2019]
    Nyckelord :Litium-ion State of health battery batteries Estimation method Alelion;

    Sammanfattning : The ongoing shift towards a sustainable transportation sector is a hot topic. Lithiumion battery technology has become a key element in electrification due to its highenergy density and favourable electrical properties. The non-measurable chargeandhealth states of a battery are desirable to estimate for safety, performanceand economic reasons. LÄS MER

  5. 4. Ferroelectricity in nanocrystalline Hf0.5Zr0.5O2 thin films

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Lun Sang; [2018]
    Nyckelord :ferroelectricity; Hf0.5Zr0.5O2; GIXRD; XRR; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : Hafnium dioxide (HfO_2) based thin films doped with various dopants (Si, Ge, Al, Gd, Sr, Zr) have been found to exhibit ferroelectricity. These dopants were found to stabilize the III orthorhombic phase in the hafnium oxide based thin films. LÄS MER

  7. 5. Production, Characterization and Electrochemical Properties of Advanced Bulk Metallic Glasses for Hip Implant Applications

    Master-uppsats, KTH/Materialens processvetenskap

    Författare :Ali Tabeshian; [2011]
    Nyckelord :Biomaterials; Bulk Metallic Glass; Crystalline Zr55Cu30Ni5Al10; Co-Cr-Mo alloy; Stainless steel; Polarization curve; FTIR; Impedance.;

    Sammanfattning : The aim of the present project was to investigate the possibilities of using a Zr55Cu30Ni5Al10 Bulk Metallic Glass (BMG) alloy as articulating surface in an artificial hip joint. In order for a material to be used in human body as an implant, the foremost requirement is the acceptability by the human body. LÄS MER