Sökning: "SEI"

Visar resultat 21 - 25 av 33 avhandlingar innehållade ordet SEI.

1. 21. Soft X-ray Emission Spectroscopy of Liquids and Lithium Battery Materials

   Författare :Andreas Augustsson; Joseph Nordgren; Jinghua Guo; Kevin Smith; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atomic and molecular physics; Soft X-ray emission; resonant inelastic X-ray scattering; lithium battery; electronic structure; liquid water; Atom- och molekylfysik; Atomic and molecular physics; Atom- och molekylfysik;

   Sammanfattning : Lithium ion insertion into electrode materials is commonly used in rechargeable battery technology. The insertion implies changes in both the crystal structure and the electronic structure of the electrode material. LÄS MER

3. 22. Non-aqueous Electrolytes and Interfacial Chemistry in Lithium-ion Batteries

   Författare :Chao Xu; Torbjörn Gustafsson; Kristina Edström; Daniel Brandell; Brett Lucht; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion batteries; electrolyte; electrolyte additives; electrochemistry; interfacial chemistry; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : Lithium-ion battery (LIB) technology is currently the most promising candidate for power sources in applications such as portable electronics and electric vehicles. In today's state-of-the-art LIBs, non-aqueous electrolytes are the most widely used family of electrolytes. LÄS MER

4. 23. Insights into Stability Aspects of Novel Negative Electrodes for Li-ion Batteries

   Författare :Hanna Bryngelsson; Kristina Edström; Stefania Panero; Uppsala universitet; []
   Nyckelord :Inorganic chemistry; Li-ion batteries; anode materials; Sb; Cu2Sb; electrodeposition; Oorganisk kemi;

   Sammanfattning : Demands for high energy-density batteries have sharpened with the increased use of portable electronic devices, as has the focus global warming is now placing on the need for electric and electric-hybrid vehicles. Li-ion battery technology is superior to other rechargeable battery technologies in both energy- and power-density. LÄS MER

5. 24. Building Sustainable Batteries : Organic electrodes based on Li- and Na-benzenediacrylate

   Författare :Alina Oltean; Daniel Brandell; Leif Nyholm; Steven Renault; Martin Sjödin; Robert Dominko; Uppsala universitet; []
   Nyckelord :Organic Electrode Materials; Li-ion Batteries; Na-ion Batteries; Calendaring; Recycling Process; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : As possible alternatives to the conventional inorganic Li- or Na-ion battery electrode materials, organic compounds have recently drawn considerable attention. However, major challenges such as poor electronic conductivity, solubility in battery electrolyte or fast capacity decay of the resulting electrochemical cells are some of the reasons that hold these compounds back from becoming commercial solutions in the energy system. LÄS MER

7. 25. Polymers at the Electrode-Electrolyte Interface : Negative Electrode Binders for Lithium-Ion Batteries

   Författare :Fabian Jeschull; Daniel Brandell; Bernard Lestriez; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; binder; CMC-Na; PAA; graphite; silicon; lithium-ion battery; photoelectron spectros-copy; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

   Sammanfattning : We are today experiencing an increasing demand for high energy density storage devices like the lithium-ion battery for applications in portable electronic devices, electric vehicles (EV) and as interim storage for renewable energy. High capacity retention and long cycle life are prerequisites, particularly for the EV market. LÄS MER