Lenard Hanf

HANF, Dr. Lenard

MEET - Münster Electrochemical Energy Technology
Room: C2.1.15
Wilhelm-Schickard-Straße 8
D-48149 Münster

Phone: +49 251 83-36082
lenard.hanf@uni-muenster.de

Position: Postdoc

Division / Group: Analytics and Environment

Topic of Thesis: Speciation of Dissolved Transition Metals in Lithium Ion Battery Electrolytes by Means of Capillary Electrophoresis

Articles

Abke, Niklas M., Hanf, Lenard, Hendriks, Theodoor A., Kuratani, Kentaro, Tomonari, Takeuchi, Sakaebe, Hikari, Winter, Martin, Nowak, Sascha, and Wiemers-Meyer, Simon. 2025. “Direct Visualization of Aging Effects in Metal Sulfide-based All-Solid-State Battery Cathodes.” contributed to the SIMS 2025, Gießen, 07.09.2025 bis 09.09.2025.
Abke, Niklas M., Hanf, Lenard, Hendriks, Theodoor A., Winter, Martin, Nowak, Sascha, and Wiemers-Meyer, Simon. 2024. “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, and Nowak, Sascha. 2023. “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, and Nowak, Sascha. 2022. “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, and Nowak, S. 2021. “Why does aging occur in lithium ion batteries? Advancements in the quantification of transition metal species.” Wiley Analytical Science Magazine 10.
Hanf, L, Winter, M, and Nowak, S. 2021. “Warum altern Lithium-Ionen-Batterien? - Entwicklungen zur Quantifizierung von Übergangsmetallspezies.” GIT Labor-Fachzeitschrift 10: 17–19.
Hanf, L, Winter, M, and Nowak, S. 2020. “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, and Nowak, S. 2020. “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, and Nowak, S. 2020. “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, and Nowak, S. 2020. “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, and Nowak, S. 2020. “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, and Nowak, S. 2020. “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, and Nowak, S. 2019. “Investigation of Transition Metal Dissolution Mechanisms in Lithium Ion Batteries by Means of Capillary Electrophoresis.” contributed to the ANAKON 2019, Münster.
Hanf, LM. Leissing, and Winter, MNowak S. 2019. “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, and Nowak, S. 2018. “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, and Nowak, S. 2018. “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, and Nowak, S. 2017. “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, and Nowak, S. 2017. “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 2020: “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, Mar 25, 2020.
Hanf, Lenard; Winter, Martin; Nowak, Sascha 2020: “Transition metal speciation in lithium ion battery electrolytes by means of capillary electrophoresis”. 30. Doktorandenseminar des AK Separation Science, Duisburg, Deutschland, Jan 14, 2020.
Vortmann-Westhoven, Britta; Kraft, Vadim; Lürenbaum, Constantin; Hanf, Lenard, Diehl; Marcel; Winter, Martin; Nowak, Sascha 2016: “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, Sep 29, 2016.