Sökning: "Electrode materials"

Visar resultat 21 - 25 av 74 uppsatser innehållade orden Electrode materials.

  1. 21. Broad ion beam cross-sectioning, microscopy, and image analysis of battery electrode morphology

    Master-uppsats, Lunds universitet/Industriell Produktion

    Författare :Aamer Mohammed Saleem Siddiqui; [2022]
    Nyckelord :BIB; SEM; Li Plating; Particle cracking; Tortuosity; Image analysis; Technology and Engineering;

    Sammanfattning : Lithium-ion batteries (LiB) are witnessing an increasing demand for electric vehicles. It provides a sustainable energy storage solution that is more efficient and ecofriendly than the fossil fuels. LÄS MER

  3. 22. 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. 23. Ethyl 2,2-difluoroacetate as Possible Additive for Hydrogen-Evolution-Suppressing SEI in Aqueous Lithium-Ion Batteries

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Strukturkemi

    Författare :Pontus Törnblom; [2021]
    Nyckelord :Lithium; Lithium-ion; Aqueous; Battery; LIB; ALIB; WISE; SEI; Solid Electrolyte interphase; Solid Electrolyte interface; Ethyl difluoroacetate; Ethyl 2; 2-Difluoroacetate; Ethyldifluoroacetate; high reduction; water; additive; EDFA;

    Sammanfattning : The performance and lifetime of lithium-ion batteries are strongly influenced by their composition. One category of critical components are electrolyte additives, which are included primarily to stabilize electrode/electrolyte interfaces in the battery cells by forming passivation layers. LÄS MER

  5. 24. Parameter extraction in lithium ion batteries using optimal experiments

    Master-uppsats, KTH/Fordonsdesign

    Författare :Venu Gopal Prathimala; [2021]
    Nyckelord :Lithium-ion battery; State of Charge; Physics-based battery models; Model parameterization; Optimal experiments; Sensitivity analysis; Scanning electron microscopy; Brunauer–Emmett–Teller; Litiumjonbatteri; fysikbaserade batterimodeller; modellparameterisering; optimala experiment; känslighetsanalys; skanningelektronmikroskopi; Brunauer – Emmett – Teller; batteri elfordon;

    Sammanfattning : Lithium-ion (Li-Ion) batteries are widely used in various applications and are viable for automotive applications. The effective management of Li-Ion batteries in battery electric vehicles (BEV) plays a crucial role in performance and range. LÄS MER

  7. 25. 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