Sökning: "Li-ion"

Visar resultat 16 - 20 av 108 avhandlingar innehållade ordet Li-ion.

1. 16. Transition metal dissolution from Li-ion battery cathodes

   Författare :Yonas Tesfamhret; Reza Younesi; Erik J. Berg; Mark Huijben; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lithium-ion battery; Lithium-ion cathode; Transition metal dissolution; Atomic Layer Deposition; Inductively coupled plasma atomic emission spectroscopy; Cathode-electrolyte interaction; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

   Sammanfattning : Lithium-ion batteries (LIBs) have become reliable electrochemical energy storage systems due to their relative high energy and power density, in comparison to alternative battery chemistries. The energy density of current LIBs is limited by the average operating voltage and capacity of oxide-based cathode materials containing a variety of transition metals (TM). LÄS MER

3. 17. Nano-structured 3D Electrodes for Li-ion Micro-batteries

   Författare :Emilie Perre; Kristina Edström; Patrice Simon; Torbjörn Gustafsson; Patrik Johansson; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical physics; Kemisk fysik; Chemistry; Kemi;

   Sammanfattning : A new challenging application for Li-ion battery has arisen from the rapid development of micro-electronics. Powering Micro-ElectroMechanical Systems (MEMS) such as autonomous smart-dust nodes using conventional Li-ion batteries is not possible. LÄS MER

4. 18. Interfaces in Li-ion batteries seen through photoelectron spectroscopy

   Författare :Ida Källquist; Maria Hahlin; Håkan Rensmo; Laurent Duda; Kristina Edström; Edvin Lundgren; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : To accommodate the need for greener energy solutions renewable energy sources aswell as reliable energy storage is a prerequisite. For the latter, high energy densitybatteries with long-term cycling stability are necessary. The cycling properties of abattery is to a large extent dependent on the functionality of the battery interfaces. LÄS MER

5. 19. A Quest for the Unseen : Surface Layer Formation on Li4Ti5O12 Li-Ion Battery Anodes

   Författare :Tim Nordh; Kristina Edström; Daniel Brandell; Carl Tangstedt; Miguel Ángel Muños; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; SEI; LTO; XPS; PES; Surface Layer; Titanate; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : The electric vehicle itself today outlives its battery, necessitating battery replacement. Lithium titanium oxide (LTO) has, in this context, been suggested as a new anode material in heavy electric vehicle applications due to intrinsic properties regarding safety, lifetime and availability. LÄS MER

7. 20. Exploring Reaction Pathways in Li-ion Batteries with Operando Gas Analysis

   Författare :Robin Lundström; Erik Berg; Reza Younesi; Isidora Cekic-Laskovic; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Online electrochemical mass spectrometry; Li-ion batteries; Solid electrolyte interphase; Reaction pathways; ; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : The reliance on Li-ion batteries is increasing as we transition from fossil fuels to renewable energy sources. Despite their widespread use, a gap remains in understanding certain processes within these batteries, especially regarding the solid electrolyte interphase (SEI) and the impact of side reactions on Li-ion batteries. LÄS MER