Johan Hjelm

  1. 2018
  2. Published

    Complementary analyses of aging in a commercial LiFePO4/graphite 26650 cell. / Scipioni, Roberto; Jørgensen, Peter S.; Stroe, Daniel I.; Younesi, Reza; Simonsen, Søren B.; Norby, Poul; Hjelm, Johan; Jensen, Søren H.

    In: Electrochimica Acta, Vol. 284, 10.09.2018, p. 454-468.

    Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

  3. Published

    Electrochemical Characterization of a PEMEC Using Impedance Spectroscopy (vol 164, F1419, 2017). / Elsøe, Katrine; Grahl-Madsen, L.; Scherer, G. G.; Hjelm, Johan; Mogensen, Mogens Bjerg.

    In: Journal of the Electrochemical Society, Vol. 165, No. 10, 2018, p. X9-X9.

    Research output: Contribution to journalComment/debate – Annual report year: 2018Communication

  4. Published

    Electrochemical impedance of an alkaline organic flow battery. / Hoffmeyer, Doris; Hjelm, Johan.

    Book of Conference Papers of the International Flow Battery Forum (IFBF 2018). 2018.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2018Researchpeer-review

  5. Published

    Noise Phenomena in Electrochemical Impedance Spectroscopy of Polymer Electrolyte Membrane Electrolysis Cells. / Elsøe, K.; Kraglund, M. R.; Grahl-Madsen, L.; Scherer, G. G.; Hjelm, J.; Jensen, S. H.; Jacobsen, T.; Mogensen, M. B.

    In: Fuel Cells, Vol. 18, No. 5, 2018, p. 640-648.

    Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

  6. Published

    Reactivating the Ni-YSZ electrode in solid oxide cells and stacks by infiltration. / Skafte, Theis Løye; Hjelm, Johan; Blennow Tullmar, Peter; Graves, Christopher R.

    In: Journal of Power Sources, Vol. 378, 2018, p. 685-690.

    Research output: Contribution to journalJournal article – Annual report year: 2018Researchpeer-review

  7. 2017
  8. Published

    Durable fuel electrode. / Brodersen, Karen (Inventor); Hauch, Anne (Inventor); Chen, Ming (Inventor); Hjelm, Johan (Inventor).

    IPC No.: H01M 8/ 124 A I. Patent No.: WO2017029350. Feb 23, 2017.

    Research output: PatentPatent – Annual report year: 2017Research

  9. Published
  10. Published

    Carbon deposition and sulfur poisoning during CO2 electrolysis in nickel-based solid oxide cell electrodes. / Skafte, Theis Løye; Blennow, Peter; Hjelm, Johan; Graves, Christopher R.

    In: Journal of Power Sources, Vol. 373, 2017, p. 54-60.

    Research output: Contribution to journalJournal article – Annual report year: 2017Researchpeer-review

  11. Published

    Challenges and Possibilities of EIS on PEMEC. / Elsøe, Katrine; Kraglund, Mikkel Rykær; Hjelm, Johan; Jacobsen, Torben; Grahl-Madsen, Laila; Mogensen, Mogens Bjerg.

    Procedings of the 6th European PEFC and Electrolyser Forum 2017. European Fuel Cell Forum, 2017. A1002.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings – Annual report year: 2017Researchpeer-review

  12. Published

    Chemical and Electrochemical Properties of La0.58Sr0.4Fe0.8Co0.2O3-δ (LSCF) Thin Films upon Oxygen Reduction and Evolution Reactions. / Pitscheider, Simon; Machala, Michael; Guan, Zixuan; Chen, Di; Hjelm, Johan; Jacobsen, Torben; Chueh, William C.; Mogensen, Mogens Bjerg; Chatzichristodoulou, Christodoulos.

    2017. Abstract from 232nd ECS meeting, National Harbor, Washington, DC, United States.

    Research output: Contribution to conferenceConference abstract for conference – Annual report year: 2017Researchpeer-review

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