Sökning: "FLUORINE ANALYSIS"

Visar resultat 6 - 10 av 23 avhandlingar innehållade orden FLUORINE ANALYSIS.

1. 6. Synthesis of Novel Fluorine-Free Salts for Battery Electrolytes

   Författare :Elham Hosseini Bab Anari; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; solid state electrolyte; aqueous electrolyte; lithium-ion batteries LIBs ; safer electrolyte; ionic liquid based electrolyte; water-in-bisalt WiBS electrolyte.; sodium-ion batteries SIBs ; fluorine-free salt;

   Sammanfattning : Nowadays lithium-ion batteries (LIBs) are the dominant power sources of portable electronic devices such as mobile phones, laptops and cameras. Although recently their applications have extended to areas of electromobility and hybridization of vehicle, cost and safety issues remain as big obstacles for a smoother implementation. LÄS MER

3. 7. Toward Safer Energy Storage Solution by Development of Fluorine-Free Battery Electrolyte

   Författare :Elham Hosseini Bab Anari; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; sodium-ion batteries SIBs ; aqueous electrolyte; lithium-ion batteries LIBs ; safer electrolyte; fluorine-free salt;

   Sammanfattning : Portable electronic devices such as mobile phones, laptops, cameras and electronic vehicles (EVs) which contain lithium-ion batteries (LIBs), are indispensable part of our modern society. The safety of conventional electrolytes of LIBs, composed of fluorinated lithium salts and organic solvents is the source of some concerns. LÄS MER

4. 8. 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

5. 9. Portland Cement Clinker - Composition and Hydration

   Författare :Anna Emanuelson; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; mineralisation; hydration; polymorphism; substitutions; ferrite; aluminate; belite; alite; Portland cement clinker; phase analysis; Oorganisk kemi; Material technology; Materiallära; materialteknik;

   Sammanfattning : The crystal structures of the main Portland cement clinker phases are reviewed and two anion centered models of Ca3SiO5 and Ca2SiO4 are presented. The effects of minor elements on the clinkering process, and on the qualitative and quantitative phase compositions of Portland cement clinker are discussed. LÄS MER

7. 10. Lanthanide-mediated C-F Bond Activation Method Development and Mechanistic Investigation

   Författare :Mario Janjetovic; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; C-F bond activation; fluorine chemistry; lanthanides; single-electron transfer reagent; Lewis acid; chemoselectivity; synthetic method; catalysis;

   Sammanfattning : The use of transition-metals and main-group Lewis acids has proven to be an outstanding source for activation and subsequent functionalization of fluorinated compounds. However, the first is mainly limited to C(sp2)–F bonds which partially are activated by an adjacent heteroatom, and the latter is limited to simple C(sp3)–F bonds due to particularly strong Lewis acid character. LÄS MER