| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hjelm, Johan
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2024Unifying the ORR and OER with surface oxygen and extracting their intrinsic activities on platinumcitations
- 2023Tuning Polybenzimidazole-Derived Crosslinked Interpenetrating Network Membranes for Vanadium Redox Flow Batteriescitations
- 2023Tuning Polybenzimidazole-Derived Crosslinked Interpenetrating Network Membranes for Vanadium Redox Flow Batteriescitations
- 2022Leveraging coordination chemistry in the design of bipolar energy storage materials for redox flow batteriescitations
- 2022Leveraging coordination chemistry in the design of bipolar energy storage materials for redox flow batteriescitations
- 2018Noise Phenomena in Electrochemical Impedance Spectroscopy of Polymer Electrolyte Membrane Electrolysis Cellscitations
- 2018Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltrationcitations
- 2017A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO 4 /Graphite 26650 Cylindrical Cellcitations
- 2017Electrochemical Characterization of a PEMEC Using Impedance Spectroscopycitations
- 2017Carbon deposition and sulfur poisoning during CO 2 electrolysis in nickel-based solid oxide cell electrodescitations
- 2017A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO4/Graphite 26650 Cylindrical Cellcitations
- 2017Carbon deposition and sulfur poisoning during CO2 electrolysis in nickel-based solid oxide cell electrodescitations
- 2017Chemical and Electrochemical Properties of La0.58Sr0.4Fe0.8Co0.2O3-δ (LSCF) Thin Films upon Oxygen Reduction and Evolution Reactions
- 2016Electron microscopy investigations of changes in morphology and conductivity of LiFePO4/C electrodescitations
- 2016Electrochemical Characterization of PEMECs Operating at Various Current Densities
- 2016Quantitative review of degradation and lifetime of solid oxide cells and stacks
- 2016Electron microscopy investigations of changes in morphology and conductivity of LiFePO 4 /C electrodescitations
- 2015Carbon Deposition during CO2 Electrolysis in Ni-Based Solid-Oxide-Cell Electrodes
- 2015Carbon Deposition during CO2 Electrolysis in Ni-Based Solid-Oxide-Cell Electrodes
- 2015Kinetic Studies on Ni-YSZ Composite Electrodescitations
- 2014Structural instability and electrical properties in epitaxial Er 2 O 3 -stabilized Bi 2 O 3 thin filmscitations
- 2014Degradation Studies on LiFePO 4 cathode
- 2014Degradation Studies on LiFePO4 cathode
- 2014Impedance of SOFC electrodes: A review and a comprehensive case study on the impedance of LSM:YSZ cathodescitations
- 2014Structural instability and electrical properties in epitaxial Er2O3-stabilized Bi2O3 thin filmscitations
- 2012Durable and Robust Solid Oxide Fuel Cells
- 2012Highly durable anode supported solid oxide fuel cell with an infiltrated cathodecitations
- 2011Manufacturing and characterization of metal-supported solid oxide fuel cellscitations
- 2011Manufacturing and characterization of metal-supported solid oxide fuel cellscitations
- 2011Planar metal-supported SOFC with novel cermet anodecitations
- 2011Planar metal-supported SOFC with novel cermet anodecitations
- 2011A high performance ceria based interdiffusion barrier layer prepared by spin-coatingcitations
- 2009Development of Planar Metal Supported SOFC with Novel Cermet Anodecitations
- 2009Development of Planar Metal Supported SOFC with Novel Cermet Anodecitations
- 2008Photochromism and electrochemistry of a dithienylcyclopentene electroactive polymercitations
- 2008Photochromism and electrochemistry of a dithienylcyclopentene electroactive polymercitations
- 2007Electrochemical Impedance Studies of SOFC Cathodescitations
Places of action
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article
Electron microscopy investigations of changes in morphology and conductivity of LiFePO4/C electrodes
Abstract
In this work we study the structural degradation of a laboratory Li-ion battery LiFePO4/Carbon Black (LFP/CB) cathode by various electron microscopy techniques including low kV Focused Ion Beam (FIB)/Scanning Electron Microscopy (SEM) 3D tomography. Several changes are observed in FIB/SEM images of fresh and degraded cathodes, including cracks in the LFP particles, secondary disconnected particles, and agglomeration of CB. Low voltage (1 kV) SEM images show that the CB agglomerates have a different brightness than the fresh CB, due to charging effects. This suggests that the electronic conductivity of the CB agglomerates is low compared to that of the fresh CB particles. HRTEM analysis shows that fresh CB particles are quasi crystalline, whereas the LFP/CB interface in the degraded electrode shows amorphous carbon surrounding the LFP particles. The presence of the amorphous carbon is known to impede the electronic conductivity and thereby decreasing percolation in the cathode and reducing the electrode capacity.