Energy and Materials

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  1. 2013
  2. Published

    Oxidative degradation of acid doped polybenzimidazole membranes and fuel cell durability in the presence of ferrous ions. / Liao, Jianhui; Yang, Jingshuai; Li, Qingfeng; Cleemann, Lars Nilausen; Jensen, Jens Oluf; Bjerrum, Niels; He, Ronghuan; Xing, Wei.

    In: Journal of Power Sources, Vol. 238, 2013, p. 516-522.

    Publication: Research - peer-review › Journal article – Annual report year: 2013

  3. 2012
  4. Published

    A Novel Method for the Determination of Membrane Hydration Numbers of Cations in Conducting Polymers.. / Jafeen, M.J.M.; Careem, M.A.; Skaarup, Steen.

    In: Journal of Solid State Electrochemistry, Vol. 16, 2012, p. 1753-1759.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  5. Published

    Direct dimethyl ether fueling of a high temperature polymer fuel cell. / Jensen, Jens Oluf; Vassiliev, Anton; Olsen, M.I.; Li, Qingfeng; Pan, Chao; Cleemann, Lars Nilausen; Steenberg, Thomas; Hjuler, Hans Aage; Bjerrum, N.J.

    In: Journal of Power Sources, Vol. 211, 2012, p. 173-176.

    Publication: Research - peer-review › Journal article – Annual report year: 2012

  6. Published

    PEM steam electrolysis at 130 °C using a phosphoric acid doped short side chain PFSA membrane. / Hansen, Martin Kalmar; Aili, David; Christensen, Erik; Pan, Chao; Eriksen, Søren ; Jensen, Jens Oluf; Barner, Jens H. Von; Li, Qingfeng; Bjerrum, Niels.

    In: International Journal of Hydrogen Energy, Vol. 37, No. 15, 2012, p. 10992-11000.

    Publication: Research - peer-review › Journal article – Annual report year: 2012

  7. Published

    PEM Water Electrolysis at Elevated Temperatures. / Hansen, Martin Kalmar; Bjerrum, Niels (Supervisor); Christensen, Erik (Supervisor); Jensen, Jens Oluf (Supervisor).

    Kgs.Lyngby : DTU Energy Conversion, 2012. 233 p.

    Publication: Research › Ph.d. thesis – Annual report year: 2012

  8. Published

    Phosphoric acid doped imidazolium polysulfone membranes for high temperature proton exchange membrane fuel cells. / Yang, Jingshuai; Li, Qingfeng; Jensen, Jens Oluf; Pan, Chao; Cleemann, Lars Nilausen; Bjerrum, Niels J.; He, Ronghuan.

    In: Journal of Power Sources, Vol. 205, 2012, p. 114-121.

    Publication: Research - peer-review › Journal article – Annual report year: 2012

  9. Published

    Synthesis and properties of poly(aryl sulfone benzimidazole) and its copolymers for high temperature membrane electrolytes for fuel cells. / Yang, Jingshuai; Li, Qingfeng; Cleemann, Lars Nilausen; Xu, Chenxi; Jensen, Jens Oluf; Pan, Chao; Bjerrum, Niels; He, Ronghuan.

    In: Journal of Materials Chemistry, Vol. 22, No. 22, 2012, p. 11185-11195.

    Publication: Research - peer-review › Journal article – Annual report year: 2012

  10. Published

    Tantalum carbide as a novel support material for anode electrocatalysts in polymer electrolyte membrane water electrolysers. / Polonský, Jakub; Petrushina, Irina; Christensen, Erik; Bouzek, K.; Prag, Carsten Brorson; Andersen, Jens Enevold Thaulov; Bjerrum, Niels.

    In: International Journal of Hydrogen Energy, Vol. 37, No. 3, 2012, p. 2173-2181.

    Publication: Research - peer-review › Conference article – Annual report year: 2012

  11. Published

    Thermal curing of PBI membranes for high temperature PEM fuel cells. / Aili, David; Cleemann, Lars N.; Li, Qingfeng; Jensen, Jens Oluf; Christensen, Erik; Bjerrum, Niels J.

    In: Journal of Materials Chemistry, Vol. 22, No. 12, 2012, p. 5444-5453.

    Publication: Research - peer-review › Journal article – Annual report year: 2012

  12. 2011
  13. Published

    Ab Initio Calculations and Raman and SERS Spectral Analyses of Amphetamine Species. / Berg, Rolf W.; Nørbygaard, Thomas; White, Peter C.; Abdali, Salim.

    In: Applied Spectroscopy Reviews, Vol. 46, No. 2, 2011, p. 107-131.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  14. Published

    Corrosion behaviour of construction materials for high temperature steam electrolysers. / Nikiforov, Aleksey; Petrushina, Irina; Christensen, Erik; Tomás García, Antonio Luis; Bjerrum, Niels.

    In: International Journal of Hydrogen Energy, Vol. 36, No. 1, 2011, p. 111-119.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  15. Published

    Corrosion rate of construction materials in hot phosphoric acid with the contribution of anodic polarization. / Kouril, M.; Christensen, Erik; Eriksen, S.; Gillesberg, B.

    In: Materials and Corrosion, Vol. 62, No. 9999, 2011.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  16. Published

    Crosslinking of polybenzimidazolemembranes by divinylsulfone post-treatment for high-temperature proton exchange membrane fuel cell applications. / Aili, David; Li, Qingfeng; Christensen, Erik; Jensen, Jens Oluf; Bjerrum, Niels.

    In: Polymer International, Vol. 60, No. 8, 2011, p. 1201-1207.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  17. Published

    Donor-acceptor-pair emission characterization in N-B doped fluorescent SiC. / Ou, Yiyu; Jokubavicius, Valdas; Kamiyama, Satoshi; Liu, Chuan; Berg, Rolf W.; Linnarsson, Margareta; Yakimova, Rositza; Syväjärvi, Mikael; Ou, Haiyan.

    In: Optical Materials Express, Vol. 1, No. 8, 2011, p. 1439-1446.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  18. Published

    Effect of chloride impurities on the performance and durability of polybenzimidazole-based high temperature proton exchange membrane fuel cells. / Ali, Syed Talat (Invited author); Li, Qingfeng (Invited author); Pan, Chao (Invited author); Jensen, Jens Oluf (Invited author); Nielsen, Lars Pleth (Invited author); Møller, Per (Invited author).

    In: International Journal of Hydrogen Energy, Vol. 36, No. 2, 2011, p. 1628-1636.

    Publication: Research - peer-review › Conference article – Annual report year: 2011

  19. Published

    Experimental and ab initio DFT calculated Raman Spectrum of Sudan I, a Red Dye. / Kunov-Kruse, Andreas Jonas; Kristensen, Steffen Buus; Liu, Chuan; Berg, Rolf W.

    In: Journal of Raman Spectroscopy, Vol. 42, No. 6, 2011, p. 1470-1478.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  20. Published

    Fast prototyping of conducting polymer microelectrodes using resistance-controlled high precision drilling. / Kafka, Jan Robert; Geschke, Oliver; Skaarup, Steen; Larsen, Niels Bent.

    In: Microelectronic Engineering, Vol. 88, No. 8, 2011, p. 2589-2592.

    Publication: Research - peer-review › Conference article – Annual report year: 2011

  21. Published

    Formation and characterization of varied size germanium nanocrystals by electron microscopy, Raman spectroscopy, and photoluminescence. / Ou, Haiyan; Ou, Yiyu; Liu, Chuan; Berg, Rolf W.; Rottwitt, Karsten.

    In: Optical Materials Express, Vol. 1, No. 4, 2011, p. 643-651.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  22. Published

    High temperature proton exchange membranes based on polybenzimidazole and clay composites for fuel cells. / Plackett, David; Siu, Ana; Li, Qingfeng; Pan, Chao; Jensen, Jens Oluf; Fæster Nielsen, Søren; Permyakova, Anastasia Aleksandrovna; Bjerrum, Niels.

    In: Journal of Membrane Science, Vol. 383, No. 1-2, 2011, p. 78-87.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  23. Published

    Method of operating a direct dme fuel cell system. / Jensen, Jens Oluf (Inventor); Li, Qingfeng (Inventor); Bjerrum, Niels (Inventor); Steenberg, Thomas (Inventor).

    IPC No.: H01M8/04. Mar 31, 2011.

    Publication: Research › Patent – Annual report year: 2012

  24. Published

    NdHO, a novel oxyhydride. / Widerøe, Marius; Fjellvåg, Helmer; Norby, Truls; Poulsen, Finn Willy; Berg, Rolf W.

    In: Journal of Solid State Chemistry, Vol. 184, 2011, p. 1890-1894.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  25. Published

    New Construction and Catalyst Support Materials for Water Electrolysis at Elevated Temperatures. / Nikiforov, Aleksey; Petrushina, Irina (Supervisor); Bjerrum, Niels (Supervisor); Jensen, Jens Oluf (Supervisor); Christensen, Erik (Supervisor).

    Kgs. Lyngby, Denmark : DTU Chemistry, 2011. 227 p.

    Publication: Research › Ph.d. thesis – Annual report year: 2011

  26. Published

    Oxidative degradation of polybenzimidazole membranes as electrolytes for high temperature proton exchange membrane fuel cells. / Liao, J.H.; Li, Qingfeng; Rudbeck, H.C.; Jensen, Jens Oluf; Chromik, A.; Bjerrum, Niels; Kerres, J.; Xing, W.

    In: Fuel Cells, Vol. 11, No. 6, 2011, p. 745-755.

    Publication: Research - peer-review › Conference article – Annual report year: 2011

  27. Published

    Phosphoric acid doped membranes based on Nafion®, PBI and their blends – Membrane preparation, characterization and steam electrolysis testing. / Aili, David; Hansen, Martin Kalmar; Pan, Chao; Li, Qingfeng; Christensen, Erik; Jensen, Jens Oluf; Bjerrum, Niels.

    In: International Journal of Hydrogen Energy, Vol. 36, No. 12, 2011, p. 6985-6993.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  28. Published

    Photoluminescence and Raman spectroscopy characterization of boron- and nitrogen-doped 6H silicon carbide. / Ou, Yiyu; Jokubavicius, Valdas; Liu, Chuan; Berg, Rolf W.; Linnarsson, Margareta; Kamiyama, Satoshi; Lu, Zhaoyue; Yakimova, Rositza; Syväjärvi, Mikael; Ou, Haiyan.

    In: Proceedings of ICSCRM. 2011. p. We P-58.

    Publication: Research - peer-review › Article in proceedings – Annual report year: 2011

  29. Published

    Preparation and study of IrO2/SiC–Si supported anode catalyst for high temperature PEM steam electrolysers. / Nikiforov, Aleksey; Tomás García, Antonio Luis; Petrushina, Irina; Christensen, Erik; Bjerrum, Niels.

    In: International Journal of Hydrogen Energy, Vol. 36, No. 10, 2011, p. 5797-5805.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  30. Published

    Proton conducting polymeric materials for hydrogen based electrochemical energy conversion technologies. / Aili, David; Bjerrum, Niels (Supervisor); Li, Qingfeng (Supervisor); Christensen, Erik (Supervisor); Barner, Jens H. Von (Supervisor).

    Kgs. Lyngby, Denmark : Technical University of Denmark (DTU), 2011. 192 p.

    Publication: Research › Ph.d. thesis – Annual report year: 2011

  31. Published

    Raman Spectroscopic Study of Tungsten(VI) Oxosulfato Complexes in WO3–K2S2O7–K2SO4 Molten Mixtures: Stoichiometry, Vibrational Properties and Molecular Structure. / Paulson, Andreas L.; Kalampounias, Angelos G.; Berg, Rolf W.; Boghosian, Soghomon.

    In: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 115, 2011, p. 4214-4222.

    Publication: Research - peer-review › Journal article – Annual report year: 2011

  32. Published

    SiC-Si as a support material for oxygen evolution electrode in PEM steam electrolysers. / Nikiforov, Aleksey; Tomás García, Antonio Luis; Petrushina, Irina; Christensen, Erik; Bjerrum, Niels.

    In: Book of abstracts. 2011.

    Publication: Research - peer-review › Conference abstract in proceedings – Annual report year: 2012

  33. Published

    Size-effect of germanium nanocrystals. / Ou, Haiyan; Ou, Yiyu; Liu, Chuan; Berg, Rolf W.; Rottwitt, Karsten.

    In: Proceedings of CLEO:2011. Optical Society of America, 2011.

    Publication: Research - peer-review › Article in proceedings – Annual report year: 2011

  34. 2010
  35. Published

    1.7 nm Platinum Nanoparticles: Synthesis with Glucose Starch, Characterization and Catalysis. / Engelbrekt, Christian; Sørensen, Karsten Holm; Lubcke, T.; Zhang, Jingdong; Li, Qingfeng; Pan, Chao; Bjerrum, Niels; Ulstrup, Jens.

    In: ChemPhysChem, Vol. 11, No. 13, 2010, p. 2844-2853.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  36. Published

    A Medical Delivery Device. / Nielsen, Ole Christian (Inventor); Jensen, Jens Oluf (Inventor); Nielsson, Morten Sixten (Inventor); Bjerrum, Niels (Inventor); Hennesø, Erik (Inventor).

    Patent No.: WO10000567. Jan 07, 2010.

    Publication: Research › Patent – Annual report year: 2010

  37. Published

    Corrosion behaviour of construction materials for high temperature water electrolysers. / Nikiforov, Aleksey.

    In: A book of extended abstracts of the 8th International Symposium on New Materials And Nano-Materials For Electrochemical Systems. 2010. p. 16-17.

    Publication: Research › Article in proceedings – Annual report year: 2010

  38. Published

    Electrocatalytic properties of Ti/Pt–IrO2 anode for oxygen evolution in PEM water electrolysis. / Ye, Feng; Li, Jianling; Wang, Xindong; Wang, Tongtao; Li, Shanmei; Wei, Haojie; Li, Qingfeng; Christensen, Erik.

    In: International Journal of Hydrogen Energy, Vol. 35, No. 15, 2010, p. 8049-8055.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  39. Published

    Electrolysis test of different composite membranes at elevated temperatures. / Hansen, Martin Kalmar.

    2010. Poster session presented at 2nd CARISMA International Conference on Progress in MEA Materials for Medium and High Temperature Polymer Electrolyst Fuel Cells, Montpellier, France, .

    Publication: Research › Poster – Annual report year: 2010

  40. Published

    Introduktion til højtemperatur PEM brændselsceller. / Jensen, Jens Oluf (Author); Li, Qingfeng (Author); Pan, Chao (Author); Bjerrum, Niels (Author).

    2010. HotMEA thematic day, Technical University of Denmark, 01-01-10.

    Publication: Research › Sound/Visual production (digital) – Annual report year: 2010

  41. Published

    Nafion ®-Polybenzimidazole-Zirconium Phosphate composite membranes for steam electrolysis applications. / Aili, David; Hansen, Martin Kalmar; Li, Qingfeng; Bjerrum, Niels.

    2010. Poster session presented at ProgressMEA 2010: Progress in MEA Materials for Medium and High Temperature Polymer Electrolyte Fuel Cells, La Grande Motte, France.

    Publication: Research - peer-review › Poster – Annual report year: 2010

  42. Published

    Nucleobases and C2 and C4 Imidazolium Acetate Interactions: FTIR-ATR, Raman and NMR Spectra and ab Initio Calculations Insights. / Araújo, J. M. M.; Ferreira, Rui; Veiga, H.I.M.; Marrucho, I.M.; Berg, Rolf W.; Esperança, J. M. S. S.; Rebelo, Luis P.N.

    2010. Poster session presented at Conference on Molten Salts and Ionic Liquids 2010, Bamberg, Germany.

    Publication: Research - peer-review › Poster – Annual report year: 2010

  43. Published

    Properties, degradation and high temperature fuel cell test of different types of PBI and PBI blend membranes. / Li, Qingfeng; Rudbeck, Hans Christian; Chromik, Andreas; Jensen, Jens Oluf; Pan, Chao; Steenberg, Thomas; Calverley, Martin; Bjerrum, Niels; Kerres, Jochen.

    In: Journal of Membrane Science, Vol. 347, No. 1-2, 2010, p. 260-270.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  44. Published

    Properties, Degradation and High Temperature Fuel Cell Test of Different Types of PBI and PBI Blend Membranes. / Kerres, Jochen A; Li, Qingfeng; Rudbeck, Hans Christian; Chromik, A; Jensen, Jens Oluf; Pan, Chao; Steenberg, Thomas; Calverley, Martin; Bjerrum, Niels.

    2010. Abstract from PROGRESS MEA 2010, Palais des Congrès, La Grande Motte, France, .

    Publication: Research - peer-review › Conference abstract for conference – Annual report year: 2010

  45. Published

    Raman Spectroscopic Study of the Vapour Phase of 1-Methylimidazolium Ethanoate, a Protic Ionic Liquid. / Berg, Rolf W.; Canongia Lopes, Jose N.; Ferreira, Rui; Rebelo, Luis P. N.; Seddon, Kenneth R.; Tomaszowska, Alina A.

    In: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 114, 2010, p. 10834-10841.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  46. Published

    Selective flue gas cleaning with ionic liquids. / Kegnæs, Søren (Invited author); Due-Hansen, Johannes (Invited author); Harris, Pernille (Invited author); Berg, Rolf W. (Invited author); Riisager, Anders (Invited author); Fehrmann, Rasmus (Invited author).

    2010. Poster session presented at Conference on Molten Salts and Ionic Liquids 2010, Bamberg, Germany.

    Publication: Research - peer-review › Poster – Annual report year: 2010

  47. Published

    Silicon carbide-silicon as a support material for oxygen evolution reaction in PEM steam electrolysers. / Nikiforov, Aleksey; Petrushina, Irina; Christensen, Erik; Tomás García, Antonio Luis; Bjerrum, Niels.

    2010. Poster session presented at ProgressMEA 2010: Progress in MEA Materials for Medium and High Temperature Polymer Electrolyte Fuel Cells, La Grande Motte, France.

    Publication: Research › Poster – Annual report year: 2010

  48. Published

    Strategic surface topographies for enhanced lubrication in sheet forming of stainless steel. / Nilsson, Morten Sixten; Olsson, David Dam; Petrushina, Irina; Andreasen, Jan L.; Bay, Niels; Christensen, Erik; Bjerrum, Niels.

    In: International Journal of Surface Science and Engineering, Vol. 4, No. 1, 2010, p. 68-79.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  49. Published

    The energy efficiency of onboard hydrogen storage. / Jensen, Jens Oluf; Li, Qingfeng; Bjerrum, Niels.

    In: Energy efficiency. ed. / Jenny Palm. Sciyo, 2010. p. 143-156.

    Publication: Research - peer-review › Book chapter – Annual report year: 2010

  50. Published

    Vibrational modes and Structure of Niobium(V) Oxosulfato Complexes in the Molten Nb2O5-K2S2O7-K2SO4 System Studied by Raman Spectroscopy. / Paulsen, Andreas L.; Borup, Flemming; Berg, Rolf W.; Boghosian, Soghomon.

    In: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 114, No. 28, 2010, p. 7485-7493.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  51. Published

    X-ray Crystal Structure, Raman Spectroscopy and Ab Initio Density Functional Theory Calculations on 1,1,3,3-Tetramethylguanidinium Bromide. / Berg, Rolf W.; Riisager, Anders; Nguyen van Buu, Olivier; Fehrmann, Rasmus; Harris, Pernille; Kristensen, Steffen Buus; Brunetti, Anna Chiara.

    In: Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, Vol. 114, 2010, p. 13175-13181.

    Publication: Research - peer-review › Journal article – Annual report year: 2010

  52. 2009
  53. Published

    New nitrogen-containing materials for hydrogen storage and their characterization by high-pressure microbalance. / Vestbø, Andreas Peter; Bjerrum, Niels (Supervisor); Jensen, Jens Oluf (Supervisor); Barner, Jens H. Von (Supervisor).

    Kgs. Lyngby, Denmark : Technical University of Denmark (DTU), 2009. 210 p.

    Publication: Research › Ph.d. thesis – Annual report year: 2009

  54. Published

    1st Annual Report of the HyCycle Centre. / Christensen, Erik (Editor).

    2009.

    Publication: Research - peer-review › Report – Annual report year: 2009

  55. Published

    1st Annual Report of the WELTEMP project. / Christensen, Erik (Editor).

    2009.

    Publication: Research › Report – Annual report year: 2009

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