Search for dissertations about: "MnO2"

Showing result 1 - 5 of 13 swedish dissertations containing the word MnO2.

  2. 1. Novel electrolytes for next-generation hybrid supercapacitors - Investigating the interaction between electrolyte and electrode

    Author : Simon Lindberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ionic liquids; NaTFSI; superconcentrated; non-aqueous; VO2; MnO2; pseudocapacitance; Hybrid supercapacitors;

    Abstract : The storage of electrical energy is of outmost importance in today’s society, ranging from cell phones to large scale energy storage of intermittent electricity sources. Batteries, that are most commonly used, struggle with low power density and limited cycle lifetime. READ MORE

  4. 2. Multifunctional silk: from fabrication to application

    Author : Manish Singh; Tillämpad biokemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Silk; Sonochemistry; Supercritical impregnation; Nanofiller; Soft biosensor; Enzyme mimic;

    Abstract : Silk fibers offer untapped internal structures to template the formation of nano-objects and active coatings. So far, access to all or part of the internal and organized structures has been a significant challenge. READ MORE

  5. 3. Studies of Catalytic Low-Temperature CO Oxidation over Cobalt Oxide and Related Transition Metal Oxides

    Author : Jonas Jansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; catalytic CO oxidation; in-situ XRD; transition metal oxides; low temperature activity; kinetic modelling; in-situ FTIR; in-situ XANES; cobalt oxide; catalyst deactivation; reaction mechanism;

    Abstract : The catalytic oxidation of carbon monoxide at low temperatures is important in many applications. The use of a low temperature active catalyst may lower the emissions during the cold-start of a car, and volatile organic compounds in exhaust gases from stationary sources might be treated without the need of preheating the gas. READ MORE

  6. 4. Charge Storage mechanisms and interactions of hybrid supercapacitor electrode materials with next-generation electrolytes

    Author : Simon Lindberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The storage of electrical energy is of outmost importance in today’s society for a wide range of applications. Batteries, that are most common for electrical energy storage today, struggle with low power density and limited cycle lifetime. READ MORE

  7. 5. Chemical Processes at the Water-Manganite (γ-MnOOH) Interface

    Author : Madeleine Ramstedt; Staffan Sjöberg; Per Persson; Lars Lövgren; Steven A. Banwart; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; manganite; γ-MnOOH; mineral surface; acid-base properties; adsorption; Cd II ; N- phosphonomethyl glycine; glyphosate; PMG; surface complex; dissolution; disproportionation; XPS; EXAFS; infrared spectroscopy; SEM; AFM; potentiometry; electrophoresis; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; oorganisk kemi; Inorganic Chemistry;

    Abstract : The chemistry of mineral surfaces is of great importance in many different areas including natural processes occurring in oceans, rivers, lakes and soils. Manganese (hydr)oxides are one important group to these natural processes, and the thermodynamically most stable trivalent manganese (hydr)oxide, manganit (γ-MnOOH), is studied in this thesis. READ MORE