Sökning: "Cathode materials"

Visar resultat 16 - 20 av 33 uppsatser innehållade orden Cathode materials.

1. 16. Implications of different sensor resolutions and contrast settings in a roll-to-roll process, considering the speed of the process vs identifying defects, for manufacturing green batteries : A study on the effect of light conditions on thedetection of defects in cathode foil in batteries

   Master-uppsats, KTH/Mekatronik

   Författare :Behnam Yosef Nezhad Arya; [2021]
   Nyckelord :Contrast; Surface; Resolution; Speed; Defect; Sensor; Battery; Computer vision; Roll-to-roll; Contact Image Sensor; Mechatronics; Ljusinställning; Yta; Kontrast; Resolution; Hastighet; Defekt; skada; Sensor; Batteri; Computer vision; Roll-to-roll; Contact Image Sensor; Mekatronik.;

   Sammanfattning : This Master’s thesis work is about the conditions that can affect the identification of defects in lithium-ion batteries. In lithium batteries, there are cathode and anode, which are separated with electrically insulative but ionically conductive electrolytes and separators. LÄS MER

3. 17. ELECTRONIC STRUCTURE AND THERMODYNAMIC PROPERTIES OF LI-IONINSERTION IN SULFONAMIDES COMPOUNDS AS ORGANIC HIGH-ENERGY DENSITY CATHODES

   Master-uppsats, Uppsala universitet/Materialteori; Uppsala universitet/Kärnfysik

   Författare :Mirna Alhanash; [2021]
   Nyckelord :Organic batteries; computational; DFT; sulfonamides;

   Sammanfattning : The world’s ever-growing energy demand has evoked great interest in exploring renewable energy sources along with sustainable energy storage systems. While inorganic physics of rocking chair mechanism used in Li-ion battery have proven to provide high energy density and high performance, there are problems yet to be overcome in terms of sustainability and recyclability. LÄS MER

4. 18. Investigating Particle Cracking in Single- and Polycrystalline Nickel-Rich Cathodes using In Situ Impedance Spectroscopy

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Strukturkemi

   Författare :Mattias Sjödin; [2021]
   Nyckelord :Electrochemical surface area; particle cracking; NMC811; transmission-line model; equivalent-circuit fitting; commercial Li-ion batteries;

   Sammanfattning : State-of-the-art Li-ion cathode materials are based on LiMO2 (M=Ni, Mn, Co) layered transition metal oxides (denoted NMC) with Ni-rich composition because of their high specific capacity. Yet, these materials suffer from poor capacity retention due to crack formation during de-/lithiation cycling. LÄS MER

5. 19. Prussian White In Sodium- Ion Batteries : An evaluation of organic and inorganic coatings on active material particles

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Philip Jansson; [2021]
   Nyckelord :Sodium-ion batteries; Prussian White; Coating; Surface engineering; Zinc oxide; Polyaniline; Natriumjonbatterier; Berlinervitt; Beläggning; Ytmodifiering; Zinkoxid; Polyanilin;

   Sammanfattning : Emerging markets in electrochemical energy storage, such as stationary grid storage, coupled with future concerns over the availability of lithium, places sodium-ion battery (SIB) technologies at a unique position to enter the market as a commercially viable alternative. Current shortcomings in the performance of cathode materials in SIBs would necessarily need to be addressed if this technology is to compete with existing commercial lithium-ion battery counterparts. LÄS MER

7. 20. Recycling of Prussian White

   Kandidat-uppsats, Uppsala universitet/Institutionen för kemi - Ångström

   Författare :Agnes-Matilda Mattsson; Towa Eriksson; Caroline Löwnertz; Marielle Holmbom; [2021]
   Nyckelord :Prussian white; Prussian Blue Analogue; Sodium Ferrocyanide; Sodium Ion-battery; Recycling of batteries; Recycling of cathode materials;

   Sammanfattning : The aim of this project was to find a recycling route for Prussian white. During the experimental part, one recycling method was tested using sodium hydroxide and from this a method for re-synthesis of Prussian white was conducted as well as a method for re-crystallisation of sodium ferrocyanide. LÄS MER