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Showing result 1 - 5 of 25 swedish dissertations matching the above criteria.

2. 1. Investigation of a Multilevel Inverter for Electric Vehicle Applications

   Author : Oskar Josefsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plug-in Electric Vehicle PEV ; Electric Vehicle EV ; LiFePO4.; Integrated Charger; Efficiency; Drive Cycle; Battery modelling; Multilevel Inverter MLI ; Two-level Inverter TLI ;

   Abstract : Electrified vehicles on the market today all use the classical two-level inverter as the propulsion inverter. This thesis analyse the potential of using a cascaded H-bridge multilevel inverter as the propulsion inverter. READ MORE

4. 2. Electrochemical Studies of Aging in Lithium-Ion Batteries

   Author : Matilda Klett; Göran Lindbergh; Charles Delacourt; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aging; EIS modeling; electrolyte characterization; graphite; hybrid electric vehicles; impedance spectroscopy; LiFePO4; Li-ion batteries;

   Abstract : Lithium-ion batteries are today finding use in automobiles aiming at reducing fuel consumption and emissions within transportation. The requirements on batteries used in vehicles are high regarding performance and lifetime, and a better understanding of the interior processes that dictate energy and power capabilities is a key to strategic development. READ MORE

5. 3. LiFePO4-coated carbon fiber electrodes for structural batteries

   Author : Yasemin Duygu Yucel; Göran Lindbergh; Rakel Wreland Lindström; Dan Zenkert; Srinivasan Madhavi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lithium-ion battery; structural batteries; positive electrodes; PAN-based carbon fibers; lithium iron phosphate; Litiumjonbatteri; strukturella batterier; positiva elektroder; PAN-baserade kolfibrer; litiumjärnfosfat; Chemical Engineering; Kemiteknik;

   Abstract : Lithium-ion batteries (LIBs) have a central role in products, from portable devices to large-scale energy storage for the electric grid and continue to undergo rapid development. The surge in electric vehicles has intensified the focus on technological advancements and new-generation technologies. READ MORE

6. 4. Investigation of HEV Li-ion Batteries for Lithium Recovery

   Author : Sravya Kosaraju; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; LiFePO4 electrode; Li-ion battery recycling; Li recovery; Solvent Extraction; Dissolution study; Characterization;

   Abstract : Automobile electrification is one of the technological developments that may establish aneco-friendly transport system by mitigating vehicle emissions, and hopefully lead to a lessfossil fuel-dependent society. Conservative forecasts predict four million electric cars onthe road by 2015 (Bernhart et al., 2012). READ MORE

7. 5. The Complex Nature of the Electrode/Electrolyte Interfaces in Li-ion Batteries : Towards Understanding the Role of Electrolytes and Additives Using Photoelectron Spectroscopy

   Author : Katarzyna Ciosek Högström; Kristina Edström; Håkan Rensmo; Leif Nyholm; John Owen; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Li-ion battery; LiFePO4 graphite cell; interface; electrolyte additives; solid electrolyte interphase SEI ; photoelectron spectroscopy PES ; synchrotron; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

   Abstract : The stability of electrode/electrolyte interfaces in Li-ion batteries is crucial to the performance, lifetime and safety of the entire battery system. In this work, interface processes have been studied in LiFePO4/graphite Li-ion battery cells. READ MORE