• Publications

    • Abke, Niklas M.; Hanf, Lenard; Hendriks, Theodoor A.; Winter, Martin; Nowak, Sascha; Wiemers-Meyer, Simon. ‘What’s Cracking? Deep Investigation of aged Solid-State Electrolyte Lithium Sulfur Batteries via Time of Flight Secondary Ion Mass Spectrometry. .’ contributed to the ADVANCED BATTERY POWER, Münster, .
    • Hanf, Lenard; Brüning, Kai; Winter, Martin; Nowak, Sascha. . ‘Front Cover - Method Development for the Investigation of Mn2+/3+, Cu2+, Co2+ and Ni2+ with Capillary Electrophoresis Hyphenated to Inductively Coupled Plasma – Mass Spectrometry.’ Electrophoresis 41, № 1-2. doi: 10.1002/elps.202370011.
    • Hanf, Lenard; Brüning, Kai; Winter, Martin; Nowak, Sascha. . ‘Method Development for the Investigation of Mn2+/3+, Cu2+, Co2+ and Ni2+ with Capillary Electrophoresis Hyphenated to Inductively Coupled Plasma – Mass Spectrometry.’ Electrophoresis 44, № 1-2: 89–95. doi: 10.1002/elps.202200139.
    • Hanf L, Winter M, Nowak S. . ‘Why does aging occur in lithium ion batteries? Advancements in the quantification of transition metal species .’ G.I.T Laboratory Journal Europe 10.
    • Hanf L, Winter M, Nowak S. . „Warum altern Lithium-Ionen-Batterien? - Entwicklungen zur Quantifizierung von Übergangsmetallspezies.“ G.I.T Laborfachzeitschrift 10: 17–19.
    • Hanf L, Winter M, Nowak S. ‘Investigation of Transition Metal Species in Lithium Ion Batteries by Means of CE/ICP-MS.’ contributed to the 53. Jahrestagung der Deutschen Gesellschaft für Massenspektrometrie, DGMS, Münster, .
    • Hanf L, Henschel J, Diehl M, Winter M, Nowak S. . ‘Mn2+ or Mn3+? Investigating transition metal dissolution of manganese species in lithium ion battery electrolytes by capillary electrophoresis.’ Electrophoresis 41, № 9: 697–704. doi: 10.1002/elps.201900443.
    • Hanf L, Diehl M, Kemper L-S, Winter M, Nowak S. . ‘Cover Page - Investigating the oxidation state of Fe from LiFePO4-based lithium ion battery cathodes via capillary electrophoresis.’ Electrophoresis 41, № 18-19. doi: 10.1002/elps.202070102.
    • Hanf L, Diehl M, Kemper L-S, Winter M, Nowak S. . ‘Cover Page - Accessing copper oxidation states of dissolved negative electrode current collectors in lithium ion batteries.’ Electrophoresis 41, № 18-19. doi: 10.1002/elps.202070102.
    • Hanf L, Diehl M, Kemper L-S, Winter M, Nowak S. . ‘Accessing copper oxidation states of dissolved negative electrode current collectors in lithium ion batteries.’ Electrophoresis 41, № 18-19: 1568–1575. doi: 10.1002/elps.202000155.
    • Hanf L, Diehl M, Kemper L-S, Winter M, Nowak S. . ‘Investigating the oxidation state of Fe from LiFePO4-based lithium ion battery cathodes via capillary electrophoresis.’ Electrophoresis 41, № 18-19: 1549–1556. doi: 10.1002/elps.202000097.
    • Hanf L, Winter M, Nowak S. ‘Investigation of Transition Metal Dissolution Mechanisms in Lithium Ion Batteries by Means of Capillary Electrophoresis.’ contributed to the ANAKON 2019, Münster, .
    • Hanf L, M. Leissing, Winter M, Nowak S. ‘Investigation of transition metal species in lithium ion battery electrolytes by means of CE/ICP-MS – A new approach to reveal the dissolution mechanism of transition metals from cathode materials.’ contributed to the European Winter Conference on Plasma Spectrochemistry 2019, Pau, .
    • Hanf L, Wilken A, Winter M, Nowak S. ‘Investigation of Transition Metal-Based Cathode Materials – Speciation of Dissolved Mn2+/Mn3+ by Means of Capillary Electrophoresis.’ contributed to the 10. Kraftwerk Batterie Fachtagung, Münster, .
    • Hanf L, Wilken A, Winter M, Nowak S. ‘QUANTIFICATION OF DISSOLVED MN2+/3+ IN LITHIUM ION BATTERY ELECTROLYTES BY MEANS OF CE/ICP-MS – A NEW APPROACH FOR THE INVESTIGATION OF TRANSITION METAL DISSOLUTION FROM CATHODE MATERIALS.’ contributed to the 9th Nordic Conference on Plasma Spectrochemistry, Loen, .
    • Hanf L, Pyschik M, Winter M, Nowak S. ‘IDENTIFICATION AND QUANTIFICATION OF MN2+ AND MN3+ IN LITHIUM ION BATTERY ELECTROLYTES BY MEANS OF CAPILLARY ELECTROPHORESIS AND ULTRAVIOLET-VISIBLE LIGHT-DETECTION.’ contributed to the 23rd International Symposium on Separation Sciences (ISSS 2017), Wien, .
    • Hanf L, Wentker K, Winter M, Nowak S. ‘Method Development for Trace Elemental Analysis of Manganese in Lithium Ion Battery Electrolytes by Means of Inductively Coupled Plasma-Sector Field-Mass Spectrometry (ICP SF MS) .’ contributed to the European Winter Conference on Plasma Spectrochemistry - EWCPS 2017, St. Anton, .

  • Scientific Talks

    • Hanf, Lenard; Winter, Martin; Nowak, Sascha : “New insights into the capacity fading mechanisms of lithium ion batteries - Investigation of transition metal oxidation states in electrolytes by means of capillary electrophoresis”. 12. Kraftwerk Batterie Fachtagung, Münster, Deutschland, .
    • Hanf, Lenard; Winter, Martin; Nowak, Sascha : “Transition metal speciation in lithium ion battery electrolytes by means of capillary electrophoresis”. 30. Doktorandenseminar des AK Separation Science, Duisburg, Deutschland, .
    • Vortmann-Westhoven, Britta; Kraft, Vadim; Lürenbaum, Constantin; Hanf, Lenard, Diehl; Marcel; Winter, Martin; Nowak, Sascha : “Lithium Ion Batteries: Stoichiometric Characterization of Electrodes and Determination of Transition Metal Dissolution in Electrolytes using CE and IC”. 2nd Global IC User Meeting, Herisau, Schweiz, .