Essays about: "coulombic efficiency"

Showing result 1 - 5 of 8 essays containing the words coulombic efficiency.

  1. 1. Investigating self-discharge in a graphite dual-ion cell using in-situ Raman spectroscopy.

    University essay from Uppsala universitet/Strukturkemi

    Author : Ismail Yussuf Hassan; [2023]
    Keywords : graphite; dual-ion battery; parasitic reaction; cathode-electrolyte interface; anion intercalation; concentrated electrolyte; self-discharge; Raman spectroscopy;

    Abstract : Anion intercalation in the graphite positive electrode of a dual-ion battery requires high potential (> 4.3 V vs Li+/Li), which aggravates parasitic reactions involving electrolyte decomposition and Al corrosion, manifesting in poor coulombic efficiency, cycle life, and quick self-discharge. READ MORE

  3. 2. Waste-derived hard carbon anode materials for sodium-ion batteries : The potential of using cardboard as precursor material in sodium-ion batteries for hard carbon production in Sweden

    University essay from KTH/Materialvetenskap

    Author : Axel Björlin; Alexander Hansson; Yanxi Lucie Zhou; [2023]
    Keywords : ;

    Abstract : In recent years, sodium ion batteries (SIBs) have emerged as a strong contender to lithium-ion batteries (LIBs). The most promising anode for the SIBs is hard carbon (HC), which can be derived from a wide variety of raw materials and waste globally. READ MORE

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

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

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

    Abstract : 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. READ MORE

  5. 4. Sodium trapping in aluminium current collectors

    University essay from Uppsala universitet/Strukturkemi

    Author : Ville Nyström; [2019]
    Keywords : Na; sodium; trapping; current collector; Al; aluminium; glyme; diglyme;

    Abstract : The aim of this master thesis was to establish if sodium is trapped in aluminium current collectors, which in turn could affect the capacity fade in sodium-ion battery systems. In the case of lithium-ion batteries, previous studies have shown that a trapping mechanism, where lithium diffuses through the active material and current collectors, can explain the capacity fade observed for several systems. READ MORE

  6. 5. Electrolyte flow rate control for Hydrogen Bromine Flow Batteries

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Rudolf Kerekes; [2019]
    Keywords : ;

    Abstract : The need for energy storage solutions became more significant with the increasing penetration of renewable energy sources in the electricity grid. In the last decades, the flow batteries have gained increasing attention. They have several advantages compared to the conventional battery technologies. READ MORE