Essays about: "In-situ Spectroscopy"

Showing result 11 - 15 of 45 essays containing the words In-situ Spectroscopy.

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

    University essay from Uppsala universitet/Strukturkemi

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

    Abstract : 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. READ MORE

  3. 12. Design of an In-situ cell, for hard X-ray spectroscopy of surfaces used in high-pressure and high-temperature experiments : Design av en In-situ cell för intensiv röntgenspektroskopi i högtryck- högtemperaturexperiment

    University essay from Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Author : David Zamora Torres; Felix Abeln; [2021]
    Keywords : In-situ cell; x-ray; XAS; x-ray absorption spectroscopy; XAFS; FEM; Finite element method; In-situ cell; x-ray; XAS; XAFS; FEM; Finita element metoden; röntgenspektroskopi;

    Abstract : This project analyzes how an in-situ cell can be developed to withstand high amounts of pressure and temperature of at least 100 bar and 500 °C. A theoretical prototype will be created as a product for Malmö University and other researchers to use or improve. READ MORE

  4. 13. Film formation of mixed-halide perovskites for PSCs

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Lina Ekstedt; [2021]
    Keywords : Mixed Halide Perovskites; Perovskite Solar Cells; Bandgap Tuning; In-situ Spectroscopy; Antisolvent; Interface Modifier.; Physics and Astronomy;

    Abstract : Over the last few years there has been a steady increase in interest in the exploration of perovskite materials within photovoltaic research. This can to a large extent be attributed to the incredible pace at which solar cells based on perovskites have improved in efficiency during the same time period. READ MORE

  5. 14. Structural modifications of polyester fibres induced by thermal and chemical treatments to obtain high-performance fibres

    University essay from KTH/Fiber- och polymerteknologi

    Author : Kartikeya Sharma; [2021]
    Keywords : PET fibres; P3HB fibres; Radial gradient; Chemical modification; Thermal annealing; High-performance fibres; PET-fibrer; P3HB-fibrer; Radiell lutning; Kemisk modifiering; termisk glödgning; högpresterande fibrer;

    Abstract : Del A: Polyetylentereftalat fibrer I detta arbete presenteras olika metoder för att framställa monofilament av polyetylentereftalat (PET) (diameter: 30-50 µm) med en radiell gradient. Nyutvecklad Raman-spektroskopiteknik har använts för att kartlägga dessa inducerade radiella gradienter i t.ex. kristallinitet. READ MORE

  6. 15. BICONTINUOUS MACROPOROUS MATERIALS FROM EPOXY RESIN-BASED MONOLITHS

    University essay from Umeå universitet/Kemiska institutionen

    Author : Thuy Trân Ho-Thi; [2021]
    Keywords : ;

    Abstract : In this project, hydrophilic bicontinuous microporous materials were synthesized via one‑pot polycondensation, using epoxy compounds and polyamines as the main monomer and curing agents. To achieve this goal, two approaches have been taken. READ MORE