The Lunch Talks continue unabated in 2021, and on 16 March there will be two battery-related presentations: One from PhD student Halvor Hval, and one from Wei He in Equinor. 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 2021:
Tuesday 16 March
- Wei He, Equinor: Optimizing marine battery operations using 6 years’ operational data from two commercially operating vessels (OMB6)
Abstract: Optimizing marine battery (MB) operations to maximize the benefits for ship owners by using six years MB operational data on commercially operating vessels. Firstly, the novel MB optimal operational models will be developed. Secondly, the new MB optimal models will be comprehensively tested by two commercial vessels for two and half years. Thirdly, OMB6 will provide novel roadmaps to enhance investor’s confidence in installing more MBs on vessels based on the cost benefit analysis and the synergies of cross sector collaboration.
- Halvor Høen Hval, PhD Student at UiO: Digging into the structural unknowns of the next battery superstar
Abstract: The high-voltage cathode material LiNi0.5Mn1.5O4 (LNMO) is a promising candidate for the next generation batteries in automotive applications. To enable large scale reproducible production of high-performing LNMO, more insight into the structural mechanisms during synthesis is needed. The presence of Mn3+ is known to cause capacity fade, and while electrochemical characterization can show Mn3+ is there (from activity ~4.0 V vs Li/Li+), it cannot explain its origin. In my recent in situ synchrotron X-ray experiments I investigate correlations between (1) the oxidation state of Mn, (2) cation ordering, (3) oxygen vacancies and (4) impurity phases as temperature and oxygen partial pressure is changed
Tuesday 16 February
- Mathias Henriksen, PhD student from The University of South-Eastern Norway: Li-ion gas explosion in an open-ended Channel.
Abstract: Several fires and explosions caused by LIBs have been reported in recent years. In Arizona 2019, a Li-ion battery energy storage system (BESS) caught fire and later exploded, injuring several firefighters. A hybrid car ferry in Norway caught fire, which was followed by an explosion in October 2019. To evaluate the risk and consequence concerning LIB infrastructure and vehicles, computational fluid dynamics (CFD) simulations can be essential. This presentation will show a CFD simulation of a gas explosion in an open-ended channel, which is compared to experiments in the explosion laboratory.
Tuesday 26 January
- Joans Martin, PhD student at NTNU. Title: Zero-emission fuels in the transport sector – A spatial market diffusion model for Norway
In this PhD work we will develop a mathematical programming model to investigate the market diffusion of zero-emission fuels for air, sea and land transport by focusing on heavy and long-distance vehicles in Norway under specific techno-economic constraints and economic instruments. By modelling stock changes and purchase decisions for new drive technologies with spatial and temporal resolution, we aim to develop pathways towards a zero-emission transport energy system.
- Janis Danebergs, Researchers at IFE. Title: Zero emission heavy-duty trucks and the energy system
The Digital Lunch Talk program 2020:
Thursday 10 December
- Piotr Bujlo, Researcher at IFE. Title: Development of fuel cell stacks and systems at HySA Systems Integration & Technology Validation Centre of Competence
Hydrogen and fuel cell technology is being developed worldwide aiming at decarbonization of energy and transport sector. National Hydrogen South Africa (HySA) Programme was established in 2008 on African continent and three Centres of Competence were created. R&D work at the Centres focuses on different aspects of hydrogen production\storage technology as well as fuel cell stack components and system design, integration and validation. HySA Systems’ CoC mandate is the development of high and low temperature PEMFC stacks, stack characterization and validation as well as design and integration of fuel cell systems for stationary and transport applications. The presentation will provide an overview of R&D works in the mentioned fields conducted at HySA Systems CoC hosted by the University of the Western Cape.
- Agnieszka Weronika Lach, PhD student at USN. Title: Large scale experiments of hydrogen releases in underground parking- mechanical ventilation system
The releases of hydrogen inside a semi-confined space, such as an underground parking garage, may result in a hydrogen cloud under the ceiling. Hydrogen concentration is related to the hydrogen release rate. That is why it is important to find the release rates at which the mass flow of hydrogen does not create a cloud of concentration above 1% (or 4%, or other criteria). The influence of mechanical ventilation in such a setup is a second important factor in the investigation. The measured data during large-scale experiments will be used to validate models to calculated hydrogen concentration in semi-confined space with forced ventilation. The results will help to conclude the effectiveness of regulated ventilation systems and the upper limit of the hydrogen release rate that will not require a change in the ventilation system in case of a hydrogen release accident.
Tuesday 10 November
- Cyriac M. George, Researcher at TØI Title: An innovation systems perspective on hydrogen fuel for transport
The project uses a technological innovation systems framework to identify barriers and drivers to the introduction of hydrogen fuel in the Norwegian transport system. This involves a broader investigation of fleet electrification whereby fuel cell and battery electric drivetrains are compared the in passenger vehicle and heavy-duty/maritime segments. This includes a national general public survey concerning awareness of and attitudes towards hydrogen fuel. The project will also study the links between transport and other industrial sectors with respect to hydrogen.
- Patrick Fortin, Research Scientist at SINTEF Industry Title: Proton Exchange Membrane Fuel Cells for Offshore Applications
As Europe takes aim at decarbonizing of the maritime sector, fuel cells will play an important role as a scalable, zero-emission power source. As part of the Norwegian Fuel Cell and Hydrogen Centre’s low temperature node, SINTEF operates a 10 kW PEMFC test station. This presentation will provide an overview of the stack testing capabilities at SINTEF and highlight some initial results, with an eye towards the applicability to offshore applications.
- Eleonora Gadducci, PhD student at University of Genoa Title: Degradation in Polymeric Electrolyte Membrane Fuel Cells
Polymeric Electrolyte Membrane Fuel Cells (PEMFC) are considered a promising technology for the future zero-emissions transportation system. Nevertheless, some bottlenecks to their assessment are cost and durability, which are both linked to degradation: indeed, the most vulnerable components – polymeric membrane and catalyst – are as well the largest cost components of a FC stack. A deep understanding of degradation phenomena can improve monitoring techniques, prognostics and hint adequate control strategies, leading to the enhancement of FC’s useful life. The presentation focuses on these aspects, to provide a complete knowledge on degradation mechanisms – chemical, mechanical and by operation. Thanks to the information acquired, the future research foresees the development of mathematical models to predict cell degradation in different operative profiles and boundary conditions, using appropriate voltage degradation rates and equations. The University of Genoa aims to develop a model on Matlab-Simulink to adapt stack voltage calculation depending on estimated degradation. The model will be validated with experimental data available next year.
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.
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 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