Ole S. Kjos

ORCID: 0000-0003-0316-2462
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About
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Research Areas
  • Molten salt chemistry and electrochemical processes
  • Bauxite Residue and Utilization
  • Advancements in Battery Materials
  • Extraction and Separation Processes
  • Gas Sensing Nanomaterials and Sensors
  • Advanced Battery Materials and Technologies
  • Metallurgical Processes and Thermodynamics
  • Electrochemical Analysis and Applications
  • Advanced Chemical Sensor Technologies
  • Aluminum Alloy Microstructure Properties
  • Inorganic Fluorides and Related Compounds
  • Advanced battery technologies research
  • Advanced Materials Characterization Techniques
  • Fuel Cells and Related Materials
  • Thermal Expansion and Ionic Conductivity
  • Spectroscopy and Laser Applications
  • Combustion and Detonation Processes
  • Advanced materials and composites
  • Ionic liquids properties and applications
  • Electrocatalysts for Energy Conversion
  • Non-Destructive Testing Techniques
  • Industrial Gas Emission Control
  • Toxic Organic Pollutants Impact
  • Hybrid Renewable Energy Systems
  • Graphite, nuclear technology, radiation studies

SINTEF
2015-2024

SINTEF Industry
2018-2024

Norwegian University of Science and Technology
2010

NTNU Samfunnsforskning
2008-2009

Zeolite Battery Research Africa (ZEBRA) batteries (Na-NiCl2 solid electrolyte batteries, SEBs) have commercial applications in, e.g., energy storage due to their low costs and recyclability, long lifetime high safety. In ZEBRA Ni electrode beta’’-alumina (BASE) a > 70% share of the cell material costs. Na-ZnCl2 all liquid (ALBs), which replace with abundant low-cost Zn BASE molten salt electrolyte, could lower costs, longer higher safety, are therefore promising as grid storage....

10.20944/preprints202502.0384.v1 preprint EN 2025-02-06

Fouling is a phenomenon where material accumulates on the exterior of convective heat exchangers (HX) and other surfaces. In boilers fired by waste-derived or biomass fuels, these surfaces are cleaned frequently to maintain adequate transfer between flue gas fluid. However, excess cleaning HX wastes money resources, common practice soot removal at fixed time intervals not an optimal strategy. An adaptive timing method would be beneficial; however, real-time knowledge condition hard obtain....

10.1016/j.fuel.2023.128341 article EN cc-by Fuel 2023-04-14

The electroreduction processes on a Mo electrode in Na-Zn liquid metal battery cell with molten NaCl-CaCl2-ZnCl2 electrolyte were investigated at 565°C. effect of the operating parameters loss rate Na was determined by using electrochemical techniques. results indicated that chemical reaction reduced Ca and ZnCl2 takes place very quickly, Zn (II) to is controlled mass-transfer. diffusion coefficient ions found be approximately 3 × 10−6 cm2/s. Moreover, revealed most stick during charging....

10.1149/2.0591712jes article EN Journal of The Electrochemical Society 2017-01-01

Liquid metal batteries have been introduced as promising option to address the needs for new energy storage technologies. Currently, based on sodium and zinc are under development a favorable due their high theoretical cell potential, readily abundant materials, cost-advantages. Nevertheless, they face problem of self-discharge, which makes it inevitable understand fluid dynamics in whole cell. Motivated by that, several types mechanic instabilities Na-Zn liquid identified discussed here. On...

10.1063/5.0225593 article EN cc-by Applied Physics Reviews 2024-12-01

The possibilities of recovery rare earth metals and alloys from Nd-based scrap by electrolysis high temperature molten salts were investigated. realization such a process will eliminate the oxide or halide conversion steps, leading to more effective environmental process, as many hydrometallurgical steps are avoided. NdFeB compound (which could be magnet production demagnetized spent magnet) is placed in anode compartment where elements present material (Nd, Dy, Pr) anodically dissolved form...

10.1149/05011.0453ecst article EN ECS Transactions 2013-03-15

The fuel quality of hydrogen dispensed from 10 refuelling stations in Europe was assessed. Representative sampling conducted the nozzle by use a adapter allowing to bleed sample gas parallel while an FCEV. Samples were split off and distributed four laboratories for analysis accordance with ISO 14687 SAE J2719. results indicated some inconsistencies between but still conclusive. generally good. Elevated nitrogen concentrations detected two samples not violation new 300 μmol/mol tolerance...

10.1016/j.ijhydene.2020.11.163 article EN cc-by International Journal of Hydrogen Energy 2020-12-11

The present work deals with the investigation of an electrolytic method for titanium production that uses TiO2 enriched titania slag as raw material. process involves two steps: i) carbothermal reduction to form oxycarbide powder; and ii) electrolysis in a molten chloride-based electrolyte using consumable anode. Electrochemical studies show stability different Ti species equimolar NaCl-KCl melt at 850oC. These results, together previous about anodic oxidation mechanism anode chlorides,...

10.4028/www.scientific.net/kem.436.41 article EN Key engineering materials 2010-05-01

Abstract Currently, recycled metal is diluted with primary to keep the concentration of alloying elements within specification. This will be more difficult in future, when a larger proportion made from scrap. Particularly, there need for process that can remove noble than aluminum scrap metal. While electrolytic refining three-layer cell (the Hoopes process) possibility; present paper presents simpler and flexible electrolysis where anode (alloy) cathode (purified metal) are placed...

10.1007/s11663-021-02122-9 article EN cc-by Metallurgical and Materials Transactions B 2021-03-25

As part of FCH-JU funded HyCoRA project running from 2014 to 2017, 28 gaseous and 13 particulate samples were collected hydrogen refueling stations in Europe. Samples with commercial sampling instruments analysis performed compliance prevailing fuel quality standards. Sampling was conducted focus on diversity feedstock as well commissioning date the HRS. Results indicate that strategy for good. No evidence impurity cross-over observed. Parallel some variation analytical results. It however...

10.3389/fenrg.2020.585334 article EN cc-by Frontiers in Energy Research 2020-11-11

The aim of this work was to improve the quality produced titanium at cathode in electrolysis experiments using a oxycarbide anode, which is made solid solution TiC and TiO. Two different approaches were tested: deposition from NaCl-Na3AlF6 electrolyte, standard NaCl-KCl electrolyte with liquid metal producing alloy.

10.4028/www.scientific.net/kem.436.93 article EN Key engineering materials 2010-05-01

The aim of this work is to investigate the new possibilities for electrochemical titanium production as a way reducing costs primary metal. oxycarbide process which involves electrodeposition Ti at cathode substrate, and using anodes TiC-TiO solid solution made from TiO2 C. It looks promising, with cheap raw materials, simpler route than today's process.

10.1149/1.3159327 article EN ECS Transactions 2009-08-29
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