Search for dissertations about: "silicon anode"

Showing result 1 - 5 of 7 swedish dissertations containing the words silicon anode.

2. 1. Silicon Carbide Microwave Devices

   Author : Joakim Eriksson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SBD; high-power microwave devices; Silicon Carbide; diode mixer; wide band gap devices; physical simulations; resistive mixer; microwave devices; MESFET; Schottky diode;

   Abstract : This work deals with silicon carbide (SiC) microwave devices. It treats two devices; the Schottky diode and the metal semiconductor field effect transistor (MESFET). Different MESFET materials, fabrication processes, theoretical models for physical simulation, and device models are presented. READ MORE

4. 2. All silicon lithium-ion batteries

   Author : Chao Xu; Torbjörn Gustafsson; Kristina Edström; Daniel Brandell; Ola Nilson; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Lithium-ion batteries have been widely used as power supplies for portable electronic devices due to their higher gravimetric and volumetric energy densities compared to other electrochemical energy storage technologies, such as lead-acid, Ni-Cd and Ni-MH batteries. Developing a novel battery chemistry, ‘‘all silicon lithium-ion batteries’’, using lithium iron silicate as the cathode and silicon as the anode, is the primary aim of this Ph. READ MORE

5. 3. A scalable furnace technique to grow silicon nanoparticles for high-performance Li-ion battery anodes

   Author : Rohan Patil; Jonas Örtegren; Shizhao Xiong; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Li Ion Battery; Aerogel-Based Anodes; Novel Method; silicon nanoparticles; Nanographite; High Capacity;

   Abstract : Lithium-ion batteries are one of the key technologies to address the global climate challenge. Higher battery capacity could also be seen as indirectly influencing the entire value chain. One way to increase capacity is to add silicon to the graphite anode, since silicon can store much more lithium ions than graphite. READ MORE

6. 4. Microstructure technology in silicon, quartz, and diamond

   Author : Pelle Rangsten; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; Materials science; Teknisk materialvetenskap; Elektronik; Electronics;

   Abstract : Microstructure technology can be defined as a set of fabrication processes enabling three-dimensional structures featuring dimensions in the micrometer to millimetre range, with micrometer accuracy. Microstructures can be assembled or manufactured integrated with other structures and/or microelectronics forming complex microsystems. READ MORE

7. 5. Advancements in Lithium-Based Batteries : Unraveling and Mitigating Performance-Limiting Phenomena in Negative Electrodes

   Author : Yu-Kai Huang; Leif Nyholm; William Brant; Erik Lewin; Gunther Brunklaus; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; lithium-based batteries; negative electrodes; negative electrode materials; lithium diffusion; lithium trapping; lithium electrodeposition; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Abstract : The development of lithium-based batteries, especially lithium-ion batteries, has changed our daily lives significantly. The technologies first enabled by lithium-based batteries are now in turn creating a demand for better lithium-based batteries with higher energy densities and longer cycling lifetimes. READ MORE