![Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile](https://www.researchgate.net/profile/Johan-Hjelm/publication/259086814/figure/fig1/AS:267421151920129@1440769579140/Impedance-spectra-in-the-temperature-range-300-900C-of-a-LSMYSZ-composite-cathode-on-a_Q320.jpg)
Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile
![PDF] Sulfur Poisoning of SOFC Anodes: Effect of Overpotential on Long-Term Degradation by Anne Hauch, Anke Hagen, Johan Hjelm, Søren Preben Vagn Foghmoes · 10.1149/2.080406jes · OA.mg PDF] Sulfur Poisoning of SOFC Anodes: Effect of Overpotential on Long-Term Degradation by Anne Hauch, Anke Hagen, Johan Hjelm, Søren Preben Vagn Foghmoes · 10.1149/2.080406jes · OA.mg](https://og.oa.mg/Sulfur%20Poisoning%20of%20SOFC%20Anodes:%20Effect%20of%20Overpotential%20on%20Long-Term%20Degradation.png?author=%20Anne%20Hauch,%20Anke%20Hagen,%20Johan%20Hjelm,%20S%C3%B8ren%20Preben%20Vagn%20Foghmoes)
PDF] Sulfur Poisoning of SOFC Anodes: Effect of Overpotential on Long-Term Degradation by Anne Hauch, Anke Hagen, Johan Hjelm, Søren Preben Vagn Foghmoes · 10.1149/2.080406jes · OA.mg
![Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile](https://www.researchgate.net/profile/Christopher-Graves-5/publication/265843243/figure/fig4/AS:337826928447488@1457555624476/Comparison-of-single-fit-and-multi-fit-results-vs-pH-2-O-for-a-P-5-FP-and-P-4-OP_Q320.jpg)
Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile
![Blatter Radicals as Bipolar Materials for Symmetric Redox-Flow Batteries | Energy | ChemRxiv | Cambridge Open Engage Blatter Radicals as Bipolar Materials for Symmetric Redox-Flow Batteries | Energy | ChemRxiv | Cambridge Open Engage](https://chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/61b8a93ea53f1b6e739abe9f/largeThumb/blatter-radicals-as-bipolar-materials-for-symmetric-redox-flow-batteries.jpg)
Blatter Radicals as Bipolar Materials for Symmetric Redox-Flow Batteries | Energy | ChemRxiv | Cambridge Open Engage
![Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile](https://i1.rgstatic.net/ii/profile.image/273827280191488-1442296919070_Q512/Johan-Hjelm.jpg)
Johan HJELM | Professor (Full) | PhD | Technical University of Denmark, Kongens Lyngby | DTU | Department of Energy Conversion and Storage | Research profile
![A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO 4 /Graphite 26650 Cylindrical Cell – topic of research paper in Medical engineering. Download scholarly article PDF and read for free A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO 4 /Graphite 26650 Cylindrical Cell – topic of research paper in Medical engineering. Download scholarly article PDF and read for free](https://cyberleninka.org/viewer_images/106239/f/1.png)
A Physically-Based Equivalent Circuit Model for the Impedance of a LiFePO 4 /Graphite 26650 Cylindrical Cell – topic of research paper in Medical engineering. Download scholarly article PDF and read for free
![Blatter Radicals as Bipolar Materials for Symmetric Redox-Flow Batteries | Energy | ChemRxiv | Cambridge Open Engage Blatter Radicals as Bipolar Materials for Symmetric Redox-Flow Batteries | Energy | ChemRxiv | Cambridge Open Engage](https://chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/61b8f1a4d6dcc2687c382256/largeThumb/supporting-information.jpg)