E.-J. Oh, R. Hempelmann, V. Nica, I. Radev & H. Natter, Coating procedure for chemical and morphological functionalization of multilayer-graphene foams, Carbon 121, 170-180 (2017)
R. Hempelmann & H. Natter, Nanostructured Metals and Alloys Deposited from Ionic Liquids, in F. Endres, A. Abbott & D. MacFarlande, Electrodeposition from Ionic Liquids, Wiley-VCH, Weinheim 2017, page 253-278, ISBN 978-3-527-33602-9
A. Egentenmeyer, M. Baumgärtner, T. Linck, D. Durneata, H. Natter, R. Hempelmann, I. Radev & V. Peinecke, Pulse electrodeposition of catalyst nanoparticles for application in PEM fuel cells, Transactions of the Institute of Metal Finishing 95, 9-19 (2017)
T. Burankova, G. Simeoni, R. Hempelmann, J. Francisco, M. Cardozo & Jan. P. Embs, Dynamic Heterogeneity and Flexibility of the Alkyl Chain in Pyridinium-Base Ionic Liquids, J. Phys. Chem. B 121, 240-249 (2017)
E.-J. Oh, R. Hempelmann, V. Nica, I. Radev & H. Natter, New catalyst supports by surface modification of graphene- and carbon nanotube structures with nitrogen containing carbon coating, Journal of Power Sources 341, 240-249 (2017)
D. Rauber, F. Heib, M. Schmitt, R. Hempelmann, Influence of perfluoroalkyl-chains on the surface properties of 1-methylimidazolium bis(trifluoromethanesulfonyl)imide ionic liquids, Journal of Molecular Liquids 216, 246-258 (2016)
R. Chen & R. Hempelmann, Ionic Liquid-Mediated Aqueous Redox Flow Batteries for High Voltage Applications, Electrochemistry Communications 70, 56-59 (2016)
R. Chen, S. Ren, X. Mu, E. Maawad, S. Zander, R. Hempelmann, H. Hahn, High-performance low temperature Li+ intercalation in disordered rock-salt Li-Cr-V oxyfluorides, ChemElectroChem 3, 892-895 (2016)
R. Chen, E. Maawad, M. Knapp, S. Ren, P. Beran, R. Witter, R. Hempelmann, Lithiation-driven structural transition of VO2F into disordered rock-salt LixVO2F,
RSC Adv. 6, 65112-65118 (2016)
R. Chen, R. Witte, R. Heinzmann, S. Ren, S. Mangold, H. Hahn, R. Hempelmann, H. Ehrenberg, S. Indris, Identifying the redox activity of cation-disordered Li-Fe-V-Ti oxide cathodes for Li-ion batteries, Phys. Chem. Chem. Phys. 18, 7695 (2016).
G. Barbieri, A. Brunetti, M.L. Di Vona, E. Sgreccia, P. Knauth, H.Y. Hou, R. Hempelmann, F. Arena, L.D. Beretta, B. Bauer, M. Schuster, J.O. Ossó & L.F. Vega, LoLiPEM: Long life proton exchange membrane fuel cells, International Journal of Hydrogen Energy 41, 1921-1934 (2016)
R. Chen, Zhifeng Huang, Yonglai Zhang & R. Hempelmann, High Voltage Aqueous Redox Flow Batteries Using Ionic Liquids (Lecture);
D. Rauber, F. Philippi & R. Hempelmann, Ionicity of Ionic Liquids determined by PFG-STE NMR (Poster);
G. Skorikova & R. Hempelmann, Immobilization of ionic liquids in PBI framework for HT-PEMFC applications (Poster);
K. Weishaar, H. Natter & R. Hempelmann, Characterization and improvement of the active materials in the vanadium redox flow battery (Poster);
J. Geiser, H. Natter & R. Hempelmann, Investigations on an improved state-of-charge indicator for the all-vanadium redox flow battery (Poster);
Zhifeng Huang, R. Hempelmann & R. Chen, Anion intercalation electrode for high-voltage semi-solid flow batteries (Poster);
Yonglai Zhang, R. Hempelmann & R. Chen, Ionic liquid based aqueous electrolytes for redox flow battery (Poster);
116th General Assembly of the German Bunsen Society for Physical Chemistry, Kaiserslautern, Germany, May 2017
Zhenjun Chang, Zhifeng Huang, R. Hempelmann & R. Chen, Redox active solution/suspension for flow batteries (Lecture), 13th Zsigmondy Colloquium of the German Colloid Society, Saarbrücken, April 2017
D.K. Kim, S.J. Yoon, J. Lee & S. Kim, Investigation of mass transport through Nafion 115 in the vanadium redox flow battery (Lecture), 14th Symp. Fuel Cell and Battery Modelling and Experimental Validation - Modval 14, Karlsruhe, March 2017
R. Chen & R. Hempelmann, High intercalation level of lithium in disordered rock-salt inorganic Materials (Poster), 26th ATC 2017: Industrial Inorganic Chemistry - Materials and Processes, Frankfurt, February 2017
E.-J. Oh, G. Skorikova, H. Natter & R. Hempelmann, Three-dimensional porous architecture of graphene / CNT composites in PEM fuel cells (Lecture), 7th Int. Conf. Fundamentals & Developments of Fuel Cells, Stuttgart, January 2017
S.W. Kim (Lecture), Energy storage for energy transition;
R. Hempelmann (Lecture), The fuel cell market ion Germany and the fuel cell research at KIST Europe;
ENGINEERING for our FUTURE, ADeKo Joint Korean German Conference, Dresden, November 2016
R. Chen & R. Hempelmannm (Lecture), Aqueous ionic liquid electrolyte for high voltage redox flow batteries, GDCh Electrochemistry, Goslar, September 2016
R. Chen, M. Knapp, E. Maawad, S. Zander, P. Beran & R. Hempelmann, Electrochemistry driven structural transition of VO2F into disordered rock-salt (Poster);
R. Chen & R. Hempelmann (Poster), Ionic liquids-mediated aqueous electrolytes for redox flow batteries ;
67th Annual Meeting of the International Society of Electrochemistry, The Hague, The Netherlands, August 2016
J. Lee, Barriers for reduction of gas phase carbon dioxide in PEM architecture (Lecture);
R. Chen, Energy storage: from solid-state Li-ion batteries to liquid-phase redox flow batteries (Lecture);
KIST Europe Workshop: Sustainable – Electrochemistry, Saarbrücken, June 2016
S. W. Kim, J. Lee, R. Chen, R. Hempelmann, Development of Energy storage at KIST Europe (Invited Lecture), Italian – Korean Summer School 2016, Naples, Italy, June 2016
R. Chen, R. Hempelmann, Ionic liquid-mediated aqueous electrolytes for redox flow batteries (Lecture), 7th International Flow Battery Forum (IFBF) 2016, Karlsruhe, Germany, June 2016.
S. W. Kim, D. Henkensmeier, N. Jo, L. Komsiyska, G. Gupta, Application of Nafion/polybenzimidazole blend membranes to vanadium flow batteries (Poster), 7th International Flow Battery Forum (IFBF) 2016, Karlsruhe, Germany, June 2016.
R. Chen, Intercalation chemistry and solid-state cathode materials for lithium-ion batteries, Inorganic Chemistry Colloquium 2016 - Saarland University, Saarbrücken, Germany, June 2016.
S. W. Kim, D. Henkensmeier, N. Jo, L. Komsiyska, G. Gupta, Vanadium redox flow battery performance improvement (Lecture), New concept in Energy Transformation and Energy Storage, Saarbrücken, Germany, May 2016.
R. Chen, R. Hempelmann, E. Maawad, M. Yavuz, M. Knapp, S. Zander, Structural insights into charged Li2-xMO2F by synchrotron X-ray PDF and XANES (Lecture), Bunsentagung 2016 – 115th General Assembly of the German Bunsen Society for Physical Chemistry, Rostock, Germany, May 2016.