Sökning: "Cyclic Voltammetry"

Visar resultat 21 - 25 av 67 avhandlingar innehållade orden Cyclic Voltammetry.

1. 21. Voltammetric properties of olsalazine sodium and some related compounds

   Författare :Alf Eriksson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Olsalazine sodium; electrochemistry; oxidation; reduction; azosalicylic compounds; aminosalicylic acids; Kemi; Chemistry; Kemi; Analytical Chemistry; analytisk kemi;

   Sammanfattning : The voltammetric properties of Olsalazine sodium, seven other azosalicylic acids and the azoxy analogue of Olsalazine sodium have been studied in aqueous solutions mainly by cyclic voltammetry and constant potential coulometry. It was found that these compounds can all be both reduced and oxidised at a glassy carbon electrode. LÄS MER

3. 22. Electrochemical Deposition and Characterization of Thermoelectric Thin Films of Bismuth Telluride and Its Derivatives

   Författare :Yi Ma; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; efficiency; deposition mechanism; thermoelectric properties; Thermoelectric; thin films; bismuth telluride and its derivatives; nano-engineering; electrochemical deposition;

   Sammanfattning : Thermoelectric materials have attracted enormous academic and industrial interest recently due to the fact that they can be used in solid state devices for power generation and cooling applications. It is expected that such thermoelectric applications will eventually contribute to meet the energy challenge in the future if the performance of the current devices can be further promoted through an increase in thermoelectric efficiency of the materials. LÄS MER

4. 23. Synthesis and Photoinduced Electron Transfer of Donor-Sensitizer-Acceptor Systems

   Författare :Yunhua Xu; Licheng Sun; Björn Åkermark; Jean-Pierre Sauvage; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Artificial photosynthesis; Dye-sensitized solar cells; Electron donors; Dinuclear ruthenium complexes; Electron transfer; Organic chemistry; Organisk kemi;

   Sammanfattning : Artificial systems involving water oxidation and solar cells are promising ways for the conversion of solar energy into fuels and electricity. These systems usually consist of a photosensitizer, an electron donor and / or an electron acceptor. LÄS MER

5. 24. Dyes and their adsorption onto nanocrystalline TiO2 electrodes : Synthesis, characterisation and applications

   Författare :Viviane Aranyos; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

   Sammanfattning : The syntheses of two type of dyes (phthalocyanine and ruthenium tris-bipyridyl) are presented here. Their characterisation involves the use of cyclic voltammetry, NMR- and UV-visible spectroscopy. Once adsorbed on nanocrystalline TiO2 electrodes, their electrochemical, spectroelectrochemical and photoelectrochemical properties were investigated. LÄS MER

7. 25. Electrochemical characterization of LiNi1/3Mn1/3Co1/3O2 at different stages of lifetime

   Författare :Maria Varini; Göran Lindbergh; Marca Doeff; KTH; []
   Nyckelord :Li-ion battery; positive electrode; LiNi1 3Mn1 3Co1 3O2; electrochemical characterization; ageing; semi-empirical model; Chemical Engineering; Kemiteknik;

   Sammanfattning : Li-ion batteries have entered our everyday life first as power sources for small electronics, and recently for electric vehicles and stationary storage applications. As the requirements on the performance and lifetime of Li-ion batteries increase and diversify, it becomes paramount to properly understand their electrochemical performance at single-electrode level, and their evolution over cycling. LÄS MER