Search for dissertations about: "cathodes"

Showing result 1 - 5 of 59 swedish dissertations containing the word cathodes.

  2. 1. Defect Thermodynamics and Kinetics in Polyanionic Cathodes : A Theoretical Roadmap for Na-ion based Batteries and Hybrid Supercapacitors

    Author : Teeraphat Watcharatharapong; Rajeev Ahuja; Sudip Chakraborty; Jan Isberg; Palani Balaya; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; DFT; Energy Materials; Defects; Chemical potentials; Kinetics; Hybrid supercapacitors; Na-ion batteries; Polyanionic cathodes;

    Abstract : In this thesis, the framework of the density functional theory is employed to study and predict properties of polyanionic cathodes for Na-ion batteries and hybrid supercapacitors. It consists of three main parts as follows:The first part is primarily dedicated to kröhnkite-type Na2Fe(SO4)22H2O cathode. READ MORE

  4. 2. Efficiency and Selectivity in the Chlorate Process

    Author : Aleksandra Lindberg; Ann Cornell; Susanne Holmin; Eva Blomberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrolysis; chlorate process; anodes; cathodes; selectivity; chromate; chromium VI ; DSA; HER; OER; ClER; oxygen; chlorate; hypochlorite; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Abstract : This licentiate thesis presents experimental studies concerning two parts of the electrochemical cell in the chlorate process: a cathode and an anode.Newly synthesized MnOx electrodes were investigated for the cathodic reaction, hydrogen evolution reaction (HER) in the chlorate process. READ MORE

  5. 3. Electrochemical performance of porous MCFC cathodes

    Author : Carina Lagergren; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; molten carbonate fuel cell; MCFC cathode; LiCoO2; NiO; porous electrode; polarisation; performance; reaction mechanisms; conductivity; Chemical engineering; Kemiteknik;

    Abstract : .... READ MORE

  6. 4. Probing Critical Interfaces in Dual-Ion Batteries : The Road Towards Performant Graphite Cathodes

    Author : Antonia Kotronia; Kristina Edström; Tobias Placke; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; dual-ion batteries; graphite; cathode-electrolyte interface;

    Abstract : Transitioning into a zero-emission society will require massive efforts with respect to the harnessing and storage of renewable energy resources. The development of large-scale, electrochemical energy storage systems based on abundant and environmentally benign compounds is seen upon as a key factor for guaranteeing a successful outcome. READ MORE

  7. 5. Transition metal dissolution from Li-ion battery cathodes

    Author : Yonas Tesfamhret; Reza Younesi; Erik J. Berg; Mark Huijben; Uppsala universitet; []
    Keywords : 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;

    Abstract : 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). READ MORE