Search for dissertations about: "Storage"
Showing result 16 - 20 of 1954 swedish dissertations containing the word Storage.
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16. First Principle Studies of Functional Materials : Spintronics, Hydrogen Storage and Cutting Tools
Abstract : The properties of functional materials have been studied with density functional theory. The first type of materials that have been investigated is the so called diluted magnetic semiconductors. It is a new class of materials that could offer enhanced functionality by making use of spin in addition to the charge of the electron. READ MORE
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17. Electrified Integrated Kinetic Energy Storage
Abstract : The electric car is a technically efficient driveline, although it is demanding in terms of the primary energy source. Most trips are below 50 km and the mean power required for maintaining speed is quite low, but the system has to be able to both provide long range and high maximum power for acceleration. READ MORE
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18. Oxygen Storage Chemistry of Nanoceria
Abstract : The versatile redox chemistry of ceria (CeO2) originates from its Ce4f electron, which plays the key role in changing the oxidation state of Ce between +IV and +III. Ceria is, among other things, a material that can act as a powerful oxygen buffer with a high oxygen storage capacity (OSC). READ MORE
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19. Increasing Energy Efficiency in Electric Trains Operation : Driver Advisory Systems and Energy Storage
Abstract : Electric traction is the most efficient traction system in the railway transportation. However, due to the expensive infrastructure and high power demand from the grid, the share of electric trains in the railway transportation is still lower than other trains. READ MORE
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20. Mesoporous Materials for Fast Charging Electrochemical Energy Storage
Abstract : High performing electrochemical energy storage (EES) devices are needed to cope with the increasing energy requirements of modern society. Electrode materials must store lots of energy, charge/discharge fast and be environmentally friendly. READ MORE