Search for dissertations about: "Supercapacitor"

Showing result 1 - 5 of 23 swedish dissertations containing the word Supercapacitor.

  1. 1. Nanoscientific investigations of electrode materials for supercapacitors

    Author : Helena Malmberg; Pehr Björnbom; Anders Lundblad; Signe Kjelstrup; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Supercapacitor; double layer; microelectrode; ionic transport; Chemical engineering; Kemiteknik;

    Abstract : This doctoral thesis gives background to the field of electrochemical energy storage in supercapacitors. It attempts to place the supercapacitor device in context of available and future technologies for alternative energy systems for transportation. READ MORE

  2. 2. Energy Harvesting and Energy Storage for Wireless and Less-Wired Sensors in Harsh Environments

    Author : Elof Köhler; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; Thermoelectric; Thermoelectric harvester; harsh environment; piezoelectric harvester; supercapacitor; coupled harvester; Piezoelectric; Energy harvester;

    Abstract : Engineering requires sensors to control and understand the environment. This is particularly important in harsh environments. The drawbacks, especially in gas turbines is the complexity of installing a wired sensor and the weight of the wires. This makes wireless sensors attractive. READ MORE

  3. 3. Paper-based Supercapacitors

    Author : Britta Andres; Håkan Olin; Mats Sandberg; Mittuniversitetet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; graphene; graphite; paper; nano fibrillated cellulose; supercapacitor; electric double-layer capacitor; energy storage; roll-to-roll; coating; kinetic energy recovery;

    Abstract : The growing market of mobile electronic devices, renewable off-grid energy sources and electric vehicles requires high-performance energy storage devices. Rechargeable batteries are usually the first choice due to their high energy density. However, supercapacitors have a higher power density and longer life-time compared to batteries. READ MORE

  4. 4. Conjoined piezoelectric harvesters and carbon supercapacitors for powering intelligent wireless sensors

    Author : Henrik Staaf; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ENGINEERING AND TECHNOLOGY; coupled resonators; piezoelectric energy harvesting; Kinetic harvesting; carbon nanomaterials; Intelligent wireless sensor; Supercapacitor; electrode material; selftuning;

    Abstract : To achieve total freedom of location for intelligent wireless sensors (IWS), these need to be autonomous. To achive this today there is a need of broadband piezoelectric energy harvesting and a long-lasting energy. The Harvester need to be able to provide sufficient amount of energy for the intelligent wireless sensor to perform its task. READ MORE

  5. 5. Nanocellulose and Polypyrrole Composites for Electrical Energy Storage

    Author : Gustav Nyström; Maria Strömme; Leif Nyholm; Petr Novák; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; conducting polymer; polypyrrole; cellulose; nanocellulose; porosity; composite; energy storage; battery; supercapacitor; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Abstract : To meet the predicted increase in demand for energy storage in tomorrow's society, the development of inexpensive, flexible, lightweight and sustainable energy-storage materials is essential. In this respect, devices based on electroactive organic molecules, such as conducting polymers, are highly interesting. READ MORE