World's Best Scientists 2026 revealed!
Rolf Hempelmann

Rolf Hempelmann

D-Index & Metrics

Materials Science

D-Index
59
Citations
12131
World Ranking
7391
National Ranking
432

Chemistry

D-Index
60
Citations
12417
World Ranking
9725
National Ranking
700

Overview

Rolf Hempelmann is affiliated with Saarland University in Germany and has a research background concentrated in engineering and materials science. Their work extensively covers subfields including electrical and electronic engineering, materials chemistry, catalysis, electronic, optical and magnetic materials, as well as renewable energy and sustainability topics.

The scientist's main topics of study include ionic liquids properties and applications, advanced battery technologies research, supercapacitor materials and fabrication, electrocatalysts for energy conversion, and advancements in battery materials and technologies. These topics reflect a strong focus on energy-related materials and technologies.

Frequent publication venues for their research include The Cambridge Structural Database, Physical Chemistry Chemical Physics, SSRN Electronic Journal, The Journal of Physical Chemistry B, and Chemistry - A European Journal. These venues indicate a presence in both structural and physical chemistry domains as well as interdisciplinary journals in chemistry and materials science.

Key recent papers authored or co-authored by Rolf Hempelmann include:

  • Ether functionalisation, ion conformation and the optimisation of macroscopic properties in ionic liquids, 2020, Physical Chemistry Chemical Physics
  • Ionic liquid derived nitrogen-doped graphite felt electrodes for vanadium redox flow batteries, 2020, Carbon
  • Investigation of structural, optical, and magnetic properties of Co2+ ions substituted CuFe2O4 spinel ferrite nanoparticles prepared via precipitation approach, 2021, Journal of the Australian Ceramic Society
  • Ionic liquid-derived FeCo alloys encapsulated in nitrogen-doped carbon framework as advanced bifunctional catalysts for rechargeable Zn-air batteries, 2022, Journal of Alloys and Compounds
  • Comprehensive Study of the Impact of Mg2+ Doping on Optical, Structural, and Magnetic Properties of Copper Nanoferrites, 2020, Journal of Superconductivity and Novel Magnetism

These publications span materials chemistry, catalysis, and advanced materials for energy storage and conversion, indicating a multidisciplinary approach combining synthesis, structural analysis, and functional testing in emerging energy technologies.

Frequent co-authors with whom Rolf Hempelmann has collaborated include:

  • Daniel Rauber
  • Frederik Philippi
  • Christopher W. M. Kay
  • Sangwon Kim
  • Björn Kuttich

Best Publications

  • Electrodeposition of nanocrystalline metals and alloys from ionic liquids

    Frank Endres;Mirko Bukowski;Rolf Hempelmann;Harald Natter

  • Nanocrystalline nickel and nickel-copper alloys: Synthesis, characterization, and thermal stability

    H. Natter;M. Schmelzer;R. Hempelmann

  • Nanocrystalline Copper by Pulsed Electrodeposition: The Effects of Organic Additives, Bath Temperature, and pH

    H. Natter;R. Hempelmann

  • Electrodeposition of nano- and microcrystalline aluminium in three different air and water stable ionic liquids.

    S. Zein El Abedin;E. M. Moustafa;R. Hempelmann;H. Natter

  • Grain-growth kinetics of nanocrystalline iron studied in situ by synchrotron real-time X-ray diffraction

    H. Natter;M. Schmelzer;M.-S Löffler,†,§;C. E. Krill

  • Quasielastic Neutron Scattering and Solid State Diffusion

    Rolf Hempelmann

  • Additive free electrodeposition of nanocrystalline aluminium in a water and air stable ionic liquid

    S. Zein El Abedin;E.M. Moustafa;R. Hempelmann;H. Natter

  • Microemulsion mediated sol-gel synthesis of nano-scaled MAl2O4 (M=Co, Ni, Cu) spinels from single-source heterobimetallic alkoxide precursors

    Frank Meyer;Rolf Hempelmann;Sanjay Mathur;Michael Veith

  • Tailored mesostructuring and biofunctionalization of gold for increased electroactivity.

    Rafael Szamocki;Stephane Reculusa;Serge Ravaine;Phil N. Bartlett

  • Tailor-made nanomaterials designed by electrochemical methods

    Harald Natter;Rolf Hempelmann

  • Macroporous ultramicroelectrodes for improved electroanalytical measurements.

    Rafael Szamocki;Alexandra Velichko;Christian Holzapfel;Frank Mücklich

  • Electro-catalytic oxidative cleavage of lignin in a protic ionic liquid

    Elena Reichert;Reiner Wintringer;Dietrich A. Volmer;Rolf Hempelmann

  • Synthesis and characterizations of manganese ferrites for hyperthermia applications

    A. Doaga;A.M. Cojocariu;W. Amin;F. Heib

  • Dissecting anion-cation interaction energies in protic ionic liquids.

    Koichi Fumino;Verlaine Fossog;Kai Wittler;Rolf Hempelmann

  • Core shell particles consisting of cobalt ferrite and silica as model ferrofluids [CoFe2O4–SiO2 core shell particles]

    Joachim Wagner;Tina Autenrieth;Rolf Hempelmann

  • Muon diffusion and trapping in proton conducting oxides

    R. Hempelmann;M. Soetratmo;O. Hartmann;R. Wäppling

  • Quasielastic thermal neutron scattering experiment on the proton conductor SrCe0.95Yb0.05H0.02O2.985

    Th Matzke;U. Stimming;Christof Karmonik;M. Soetratmo

  • Electrochemical Deposition under Oxidizing Conditions (EDOC) : A new synthesis for nanocrystalline metal oxides

    A Dierstein;H Natter;F Meyer;H.-O Stephan

  • A colloidal approach to nanometre-sized mixed oxide ceramic powders

    Horst Herrig;Rolf Hempelmann

  • Fundamentals and properties of some Ti/Mn based laves phase hydrides

    O. Bernauer;J. Töpler;D. Noréus;R. Hempelmann

  • Size-controlled synthesis of nanocrystalline BaTiO3 by a sol-gel type hydrolysis in microemulsion-provided nanoreactors

    Ch. Beck;W. Härtl;R. Hempelmann

Frequent Co-Authors

Ralf Ludwig
Ralf Ludwig University of Rostock
Dirk Henkensmeier
Dirk Henkensmeier Korea Institute of Science and Technology
Dieter Richter
Dieter Richter Forschungszentrum Jülich
Alexander Kuhn
Alexander Kuhn Centre national de la recherche scientifique, CNRS
Dietrich A. Volmer
Dietrich A. Volmer Humboldt-Universität zu Berlin
Sven Ingebrandt
Sven Ingebrandt RWTH Aachen University
Alain Walcarius
Alain Walcarius University of Lorraine
Tobias Kraus
Tobias Kraus Leibniz Association
Serge Ravaine
Serge Ravaine Centre national de la recherche scientifique, CNRS
Ulrich Stimming
Ulrich Stimming Technical University of Munich

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