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Jan Van Herle

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Related publications (221)

Page 6 of 12

How Acid Washing Nickel Foam Substrates Improves the Efficiency of the Alkaline Hydrogen Evolution Reaction

Jan Van Herle, Suhas Nuggehalli Sampathkumar

Nickel foam substrates are frequently utilised as porous 3D substrates for renewable energy applications. The preparation of these substrates usually includes an acid-washing step, but the degree to which this step affects the final electrochemical perform ...

MDPI2023

In situ Reduction and Oxidation of Nickel from Solid Oxide Fuel Cells in a Transmission Electron Microscope

Jan Van Herle, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Antonin Faes

Environmental transmission electron microscopy was used to characterize in situ the reduction and oxidation of nickel from a Ni/YSZ solid oxide fuel cell anode support between 300-500°C. The reduction is done under low hydrogen pressure. The reduction init ...

2009

Ex-situ experimental benchmarking of solid oxide fuel cell metal interconnects

Jan Van Herle, Manuel Bianco

Solid oxide fuel cells (SOFCs) can convert hydrocarbon fuels, such as methane, into heat and electricity with a high conversion efficiency. The fuel flexibility of the SOFC derives from the high operating temperature (600-900 °C). Such a high temperature s ...

2019

The Effects of Dynamic Dispatch on the Degradation and Lifetime of Solid Oxide Fuel Cell Systems

Jan Van Herle, Daniel Favrat, Arata Nakajo

Understanding of mechanisms affecting degradation, durability and performance of solid oxide fuel cell (SOFC) stacks and integrated systems has become important due to increasing worldwide deployment. A novel simulation approach accounting for state-of-the ...

2011

Modeling and Designing of a Radial Anode Off-Gas Recirculation Fan for Solid Oxide Fuel Cell Systems

Jan Van Herle, Jürg Alexander Schiffmann, Stefan Diethelm, Zacharie Wuillemin, Patrick Hubert Wagner

To improve the industry benchmark of solid oxide fuel cell (SOFC) systems, we consider anode off-gas recirculation (AOR) using a small-scale fan. Evolutionary algorithms compare different system design alternatives with hot or cold recirculation. The syste ...

2017

Tubular La0.7Ca0.3Fe0.85Co0.15O3-delta Perovskite Membranes, Part I: Preparation and Properties

Jan Van Herle, Stefan Diethelm

Dense tubular self-supporting La0.7Ca0.3Fe0.85 Co0.15O3-δperovskite membranes were prepared by thermoplastic extrusion. The rheological behavior of the ceramic mixture was studied. Non-deformed tubes o ...

2006

Electrochemical Performance of Nd1.95NiO4+delta Cathode supported Microtubular Solid Oxide Fuel Cells

Jan Van Herle

Nd1.95NiO4+delta (NNO) cathode supported microtubular cells were fabricated and characterized. This material presents superior oxygen transport properties in comparison with other commonly used cathode materials. The supporting tubes were fabricated by col ...

2015

Comparison of SOFC cathode microstructure quantified using X-ray nanotomography and focused ion beam scanning electron microscopy

Jan Van Herle, Christos Comninellis, Marco Cantoni, Pietro Tanasini

X-ray nanotomography and focused ion beans scanning electron microscopy (FIB-SEM) have been applied to investigate the complex 3D microstructure of solid oxide fuel cell (SOFC) electrodes at spatial resolutions of 45 nm and below. The application of near e ...

Elsevier2011

X-ray Imaging and Analysis of 3D Microstructural Changes in Aged Ni-YSZ Anode

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes

Ni-YSZ anode supports were used to fabricate test cells composed of yttria-stabilised zirconia (YSZ) electrolyte and lanthanum strontium ferrite (LSF) or lanthanum strontium manganite (LSM) / YSZ cathodes. These cells were operated at 720 °C at an average ...

2011

Progressive activation of degradation processes in solid oxide fuel cell stacks: Part II: Spatial distribution of the degradation

Jan Van Herle, Daniel Favrat, Arata Nakajo

Solid oxide fuel cell (SOFC) stack design must yield the highest performance, reliability and durability to achieve the lowest cost of electricity delivered to end-users. Existing modelling tools can cope with the first aim, but cannot yet provide sufficie ...

Elsevier2012

Compilation of mechanical properties for the structural analysis of solid oxide fuel cell stacks. Part II: Metallic interconnect, sealants and gas diffusion layers

Jan Van Herle, Arata Nakajo

Solid oxide fuel cell (SOFC) stacks are extremely vulnerable to mechanical failures in any of their constituents, which ultimately lead to cell cracking. Like all devices, distinct failure sequences arise from different events or design particularities. Th ...

2011

Environmental implications of solid oxide fuel cell system for hydrogen sustainability

François Maréchal, Jan Van Herle, Shivom Sharma, Xinyi Wei, Du Wen, Arthur Waeber

Hydrogen, known for its high energy content and clean combustion, is promising in the energy transition. This study explores the environmental impact of a solid oxide fuel cell (SOFC) system. 1 kg of hydrogen production at 1 bar serves as the functional un ...

2025

Simulation of thermal stresses in anode-supported solid oxide fuel cell stacks. Part II: Loss of gas-tightness, electrical contact and thermal buckling

Jan Van Herle, Daniel Favrat, Zacharie Wuillemin, Arata Nakajo

Structural stability issues in planar solid oxide fuel cells arise from the mismatch between the coefficients of thermal expansion of the components. The stress state at operating temperature is the superposition of several contributions, which differ depe ...

2009

Quantitative measurement and comparison of breakthroughs inside the gas diffusion layer using lattice Boltzmann method and computed tomography scan

Jan Van Herle, Emad Oveisi, Hossein Pourrahmani, Hamza Moussaoui

In Proton Exchange Membrane Fuel Cells (PEMFCs), the presence of residual water within the Gas Diffusion Layer (GDL) poses challenges during cold starts and accelerates degradation. A computational model based on the Lattice Boltzmann Method (LBM) was deve ...

Nature Portfolio2024

Three-dimensional microstructural changes in the Ni-YSZ solid oxide fuel cell anode during operation

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes

Microstructural evolution in solid oxide fuel cell (SOFC) cermet anodes has been investigated using X-ray nanotomography along with differential absorption imaging. SOFC anode supports composed of Ni and yttria-stabilized zirconia (YSZ) were subjected to e ...

2012

Thermo-economic Optimization of a Solid Oxide Fuel Cell, Gas Turbine Hybrid System

François Maréchal, Jan Van Herle, Daniel Favrat, Nordahl Autissier, Francesca Palazzi

Large scale power production benefits from the high efficiency of gas-steam combined cycles. In the lower power range, fuel cells are a good candidate to combine with gas turbines. Such systems can achieve efficiencies exceeding 60%. High temperature Solid ...

2007

Advanced imaging of gas diffusion layers: A comparison between focused ion beam scanning electron microscopy and X-ray computed tomography

Jan Van Herle, Hossein Pourrahmani

With the advances in clean technologies, the role of fuel cells and batteries is becoming increasingly vital. Proton exchange membrane fuel cells are known to be the best candidates for low-temperature and portable operations, such as hydrogen cars. The ef ...

2025

Design of experiment approach applied to reducing and oxidizing tolerance of anode supported solid oxide fuel cell. Part I: Microstructure optimization

Jan Van Herle, Aïcha Hessler-Wyser, Antonin Faes, Jean-Marie Fuerbringer

The main drawback of Ni/YSZ anode supports for solid oxide fuel cell application is their low tolerance to reducing and oxidizing (RedOx) atmosphere changes, owing to the Ni/NiO volume variation. This work describes a structured approach based on design of ...

Elsevier2011

Lab-Scale Investigation of the Integrated Backup/Storage System for Wind Turbines Using Alkaline Electrolyzer

Jan Van Herle, Hossein Pourrahmani

The depletion of fossil fuel sources has encouraged the authorities to use renewable resources such as wind energy to generate electricity. A backup/storage system can improve the performance of wind turbines, due to fluctuations in power demand. The novel ...

MDPI2023

Oxygen transport in La0.5Sr0.5Fe1-yTi yO3-δ (y=0.0,0.2) membranes

Jan Van Herle, Stefan Diethelm

The influence of partial substitution of Fe with Ti on the oxygen transport properties of La1- xSrxFeO3 membranes was investigated in view of their application for oxygen separation. Samples of composition La0.5Sr0.5 Fe1-yTiyO3-δ (y = 0, 0.2) were prepared ...

2006