Sökning: "Charge carriers Electrochemical systems"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Charge carriers Electrochemical systems.

1. 1. Ionic and electronic transport in electrochemical and polymer based systems

   Författare :Anton Volkov; Igor Zozoulenko; Magnus Berggren; Xavier Crispin; Yury Gogotsi; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modeling; Charge transport; Charge carriers Electrochemical systems; Polymer; PEDOT:PSS; Supercapacitance; Cyclic voltammetry; double layers; Nernst-Planck-Poisson; DFT; TDDFT; Ion Bipolar Junction Transistor; ETE-S;

   Sammanfattning : Electrochemical systems, which rely on coupled phenomena of the chemical change and electricity, have been utilized for development an interface between biological systems and conventional electronics.  The development and detailed understanding of the operation mechanism of such interfaces have a great importance to many fields within life science and conventional electronics. LÄS MER

3. 2. Conducting Polymer Electrodes for Thermogalvanic Cells

   Författare :Kosala Wijeratne; Xavier Crispin; Sawako Nakamae; Linköpings universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Fossil fuels are still the dominant (ca. 80%) energy source in our society. A significant fraction is used to generate electricity with a heat engine possessing an efficiency of approximately 35%. Therefore, about 65% of fossil fuel energy is wasted in heat. LÄS MER

4. 3. Electrochemical characterizations of conducting redox polymers with proton traps : Enabling proton cycling in aprotic systems for high potential energy storage

   Författare :Lisa Åkerlund; Martin Sjödin; Rikard Emanuelsson; Adolf Gogoll; Maria Strömme; Carita Kvarnström; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Conducting redox polymers; Proton trap; Quinones; Organic energy storage; Organic batteries; Engineering Science with specialization in Nanotechnology and Functional Materials; Teknisk fysik med inriktning mot nanoteknologi och funktionella material;

   Sammanfattning : Floods, droughts and unpredictable weather could be the new reality for millions of people in a near future, unless we drastically decrease our greenhouse gas emissions to prevent the global average temperature from increasing even further. Material innovations will most certainly be essential for many of the technical solutions needed in order to tackle environmental issues. LÄS MER

5. 4. Electron transport in quaternized cross-linked poly(4-vinylpyridine) films containing trapped redox molecules : experimental and theoretical aspects that concern identification of electron translation mechanisms

   Författare :Henrik Larsson; Michael Sharp; Marcin Majda; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; charge transport; polymer film; Analytical Chemistry; analytisk kemi;

   Sammanfattning : This thesis deals with the identification of electron translation mechanisms in quaternized cross-linked poly(4-vinylpyridine) films containing trapped redox molecules. Experimental aspects, such as the determination of the total amounts of electroactive species within the films, measurements of electrochemical rate parameters and ellipsometric film thickness  evaluation, are discussed together with theoretical models that predict different mechanisms of charge transport. LÄS MER

7. 5. Organic bioelectronic devices to control cell signalling

   Författare :Karin Larsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : The nervous system consists of a network of specialized cells that coordinate the actions of the body by transmitting information to and from the brain. The communication between the nerve cells is dependent on the interplay of both electrical and chemical signals. LÄS MER