Sökning: "depth electrodes"

Visar resultat 11 - 15 av 24 avhandlingar innehållade orden depth electrodes.

  1. 11. The Complex Nature of the Electrode/Electrolyte Interfaces in Li-ion Batteries : Towards Understanding the Role of Electrolytes and Additives Using Photoelectron Spectroscopy

    Författare :Katarzyna Ciosek Högström; Kristina Edström; Håkan Rensmo; Leif Nyholm; John Owen; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Li-ion battery; LiFePO4 graphite cell; interface; electrolyte additives; solid electrolyte interphase SEI ; photoelectron spectroscopy PES ; synchrotron; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : The stability of electrode/electrolyte interfaces in Li-ion batteries is crucial to the performance, lifetime and safety of the entire battery system. In this work, interface processes have been studied in LiFePO4/graphite Li-ion battery cells. LÄS MER

  3. 12. 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

  4. 13. Partial Discharge Analysis at Arbitrary Voltage Waveform Stimulus

    Författare :Xiaolei Wang; Hans Edin; Elisabeth Lindell; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Partial discharge (PD) detection is widely used to diagnose the defects and degradation in an electrical insulation system. Generally, PD are measured with 50 Hz AC sinusoidal voltage in the on-line situation, but can also be detected at other voltage stimulus in some off-line situations. LÄS MER

  5. 14. Synthesis and Characterization of 2D Nanocrystals and Thin Films of Transition Metal Carbides (MXenes)

    Författare :Joseph Halim; Michael Barsoum; Lars Hultman; Yury Gogotsi; Per Eklund; Johanna Rosén; Jun Lu; Martin Magnuson; Ulf Jansson; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Two dimensional (2D) materials have received growing interest because of their unique properties compared to their bulk counterparts. Graphene is the archetype 2D solid, but other materials beyond graphene, such as MoS2 and BN have become potential candidates for several applications. LÄS MER

  7. 15. Hearing Preservation CI Surgery and Hybrid Hearing : From Anatomical Aspects to Patient Satisfaction

    Författare :Elsa Erixon; Helge Rask-Andersen; Claes Möller; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; anatomic variations; human cochlea; cochlear implantation; EAS; electro-acoustic stimulation; residual hearing; partial deafness; IOI-HA; EQ-5D; Oto-Rhino-Laryngology; Oto-rhino-laryngologi;

    Sammanfattning : A common cause of profound deafness is hair cell dysfunction in the cochlea. Cochlear implants (CI) bypass the hair cells via an electrode and stimulate the cochlear nerve directly. LÄS MER