Sökning: "Ionic liquids"

Visar resultat 21 - 25 av 110 avhandlingar innehållade orden Ionic liquids.

  1. 21. Fluorine-Free Ionic Liquid Based Electrolytes: Synthesis and Structural Characterization

    Författare :Mukhtiar Ahmed; Faiz Ullah Shah; Patrik Johansson; Jiayin Yuan; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ionic Liquids; Electrolytes; Sustainability; Vitamin B3; Chemistry of Interfaces; Gränsytors kemi;

    Sammanfattning : Since their introduction by Sony in 1990, lithium-ion batteries (LIBs) have acquired a sizable market share. They have the best energy densities, a high open circuit voltage, a low self-discharge rate, no memory effect, and a slow loss of charge when not in use. LÄS MER

  3. 22. Innovative Electrolytes for Safer Sodium-Ion Batteries

    Författare :Damien Monti; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Raman spectroscopy; safety; Sodium-ion batteries; ionic liquids; organic solvents; electrolytes; ionic conductivity; electrochemistry.; electrodes;

    Sammanfattning : The overconsumption of non-renewable/fossil fuels by vehicles and industry has resulted in dangerously high levels of CO2 in the atmosphere the last 40 years. The impact on the environment, climate and public health urge governments to find new technologies to ensure a sustainable development. LÄS MER

  4. 23. Coagulation of Cellulose: from Ionic-Liquid Solution to Cellulose Nanostructure

    Författare :Artur Hedlund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Wet Spinning; Cellulose; Ionic Liquids; Diffusion; Coagulation; Nonsolvent;

    Sammanfattning : Abstract A linear chain of glucose monomers, cellulose, provides the structural reinforcement of the cell walls of plants and constitutes almost half of their dry mass. Wood and other plant-based raw materials are processed on a large industrial scale to isolate the cellulose, which is then dissolved. LÄS MER

  5. 24. Lubrication mechanism of hydrocarbon-mimicking ionic liquids

    Författare :Erik Nyberg; Ichiro Minami; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; P-SiSO; boundary film; silicate; friction; wear; anti-wear; friction modifier; base fluid; Maskinelement; Machine Elements;

    Sammanfattning : Lubrication is critical in order to achieve high efficiency and reliability of machine elements such as gears, bearings, and other moving mechanical assemblies (MMA). In space applications, tribological properties of lubricants are quickly growing more important. LÄS MER

  7. 25. Binary mixtures and cationic modification of protic ionic liquids. Local structure and transport properties

    Författare :Iqbaal Abdurrokhman; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; nuclear magnetic spectroscopy; cationic modification; triazolium; imidazolium; proton mobility; Protic ionic liquids; vibrational spectroscopy; impedance spectroscopy; binary mixtures; synthesis;

    Sammanfattning : Protic ionic liquids are a subclass of ionic liquids, which in many cases are obtained by mixing an equimolar amount of Brønsted acid and base. Protic ionic liquids possess an exchangeable proton that gives them distinct features, e.g. LÄS MER