The MoZEES Lunch Talk series was launched spring 2020 and is intended as an informal, low threshold meeting place for researchers and user partners in MoZEES. The Lunch Talks gives the attendants an opportunity to catch up on the recent developments and ongoing research activities in the Center, and engage in discussions on the relevant topics.
The Digital Lunch Talk program 2020:
Tuesday 12 May
- Elise Ramleth Østli – RA1: Stabilization of high-voltage LNMO cathodes by surface coating
Abstract: The high operating voltage of cobalt-free LiNi0.5Mn1.5O4 (LNMO) at 4.7 V vs Li+/Li makes it an interesting cathode material for rechargeable Li-ion batteries (LiBs), in particular for automotive applications. However, the issues with transition metal ion dissolution and extensive electrolyte degradation must be addressed before the material can be fully commercialized. In this work, LiNi0.43Mn1.57O4 was coated with both Al2O3 or TiO2 by atomic layer deposition (ALD) in several thicknesses (5, 10, and 20 ALD cycles). Electrochemical and material characterization has been performed to evaluate the coating’s effect on capacity, capacity retention and Coulombic efficiency.
- Daniel Tevik Rogstad – RA1: Screening of ionic liquid electrolytes for high µ-Si content electrodes
Abstract: Ionic liquids are electrolyte candidates for lithium ion batteries because of their high thermal and electrochemical stability. In this work, four ionic liquids are investigated for their properties and performance as electrolytes for micron sized silicon anodes
Tuesday 26 May
- Hamid Reza Zamanizadeh, PhD Candidate, NTNU – Modification of stainless steel for OER electrode in alkaline media
Abstract: 316L stainless steel is activated through electro-oxidation at constant potentials in KOH solution to be used as OER electrode. The activation is performed in order to achieve an electrode surface with beneficial electrocatalytic properties. Durability and activity of the samples are analyzed using cyclic voltammetry and potential step measurements at a lab scale in alkaline environment and at ambient conditions. The correlation of electrocatalytic activity with surface properties is investigated using GD-OES, XPS and SEM
- André Vagner Gaathaug, Associate professor Faculty of Technology, Natural Sciences and Maritime Sciences, USN
André will present the HyTunnel-CS project, researching safety of hydrogen driven vehicles and transport through tunnels and similar confined spaces.
Tuesday 9 June
- Xinwei Sun, PhD Candidate, UiO: Polymer-ceramic composite membranes for intermediate temperature PEM applications – Synthesis and proton conductivity measurement by impedance spectroscopy.
A prototype PEM sample holder for conductivity measurements of polymer membranes in a ProboStat® at higher temperatures than what is reachable in the commercial PEM sample holders will also be introduced in this talk.
- Vegard Østli, PhD Candidate, NTNU and TØI: Travel behaviour effects of BEV ownership
Norwegian transport policy is designed to promote the purchase and usage of battery electric vehicles (BEV). These policies reduce the marginal costs of travel for BEV’s significantly by lowering out of pocket costs as well as time cost. In line with economic theory the lowered price of car transport could increase travel demand as consumers are switching from conventional vehicles towards BEV’s. In this work I utilize data from the Norwegian Travel Survey to examine whether such effects are present.