Search for dissertations about: "Kemi med inriktning mot materialkemi"

Showing result 16 - 20 of 55 swedish dissertations containing the words Kemi med inriktning mot materialkemi.

  2. 16. Highly Concentrated Electrolytes for Rechargeable Lithium Batteries

    Author : Viktor Nilsson; Kristina Edström; Patrik Johansson; Reza Younesi; Serena Corr; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Li-ion battery; SEI; Highly concentrated electrolyte; Al dissolution; Li metal battery; ion transport; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : The electrolyte is a crucial part of any lithium battery, strongly affecting longevity and safety. It has to survive rather severe conditions, not the least at the electrode/electrolyte interfaces. READ MORE

  4. 17. Titanium-Based Negative Electrode Materials for Rechargeable Batteries : In Search of the Redox Reactions

    Author : Tatiana Koriukina; Kristina Edström; Egbert Figgemeier; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion batteries; sodium-ion batteries; MXenes; perovskite oxides; redox reactions; XPS; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Abstract : Rechargeable batteries, particularly, lithium-ion batteries (LIBs) have proven to be stable and reliable energy storage devices over the past few decades. The rapid demands regarding battery applications and the pressure to move away from the fossil fuel era drive the search for new materials for better rechargeable batteries for electric vehicles, renewable energy storage, and portable electronics. READ MORE

  5. 18. Insights in Li-ion Battery Interfaces through Photoelectron Spectroscopy Depth Profiling

    Author : Bertrand Philippe; Kristina Edström; Danielle Gonbeau; Hakan Rensmo; Rémi Dedryvère; Rosa Palacin; Maria Alfredsson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion batteries; negative electrodes; silicon; MnSn2; SEI; PES; XPS; synchrotron; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : Compounds forming alloys with lithium, such as silicon or tin, are promising negative electrode materials for the next generation of Li-ion batteries due to their higher theoretical capacity compared to the current commercial electrode materials.An important issue is to better understand the phenomena occurring at the electrode/electrolyte interfaces of these new materials. READ MORE

  6. 19. Simulating ion transport in electrolyte materials with physics-based and machine-learning models

    Author : Yunqi Shao; Chao Zhang; Peter Broqvist; Carl Nettelblad; Barbara Kirchner; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; electrolytes; ionic conductivity; ion transport; molecular dynamics; machine learning potential; proton transfer; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : Electrolytes are indispensable components of electrochemical devices such as batteries, fuel cells, and supercapacitors, and the mass transport in electrolytes is one of the most important design focuses of such devices. A microscopic picture of ion transport is essential to link the chemical properties of electrolyte materials to their electrochemical applications. READ MORE

  7. 20. The Electronic Structure of Organic Molecular Materials : Theoretical and Spectroscopic Investigations

    Author : Iulia Emilia Brumboiu; Barbara Brena; Biplab Sanyal; Olle Eriksson; Jakob Schiøtz; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; materials theory; electronic structure; photoelectron spectroscopy; near-edge X-ray absorption fine structure; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik; Materialvetenskap; Materials Science;

    Abstract : In the present thesis the electronic properties of two organic molecules were studied by means of density functional theory (DFT) in connection to their possible applications in organic photovoltaics and molecular spintronics respectively.The first analysed system is the C60 derivative PCBM extensively used in polymer solar cells for the charge separation process. READ MORE