Huiting Liu
- Doctoral student until 2023
- resigned
- Research group “Research for Sustainable Energy Technologies”
Institut für Technikfolgenabschätzung und Systemanalyse (ITAS)
Postfach 3640
76021 Karlsruhe
Professional background
2019 - 2023 | Doctoral student at ITAS |
2018 | Master thesis at the Institute for High Voltage Technology (IFHT) with the title “Development of a Reinforcement Learning Agent to Optimize Secondary Control Market Offerings”, Aachen |
2017 - 2018 | Research assistant at the Institute of Power Systems and Power Economics (IAEW), Aachen |
2016 - 2018 | Master study Sustainable Energy Supply at the RWTH Aachen University |
2016 | Bachelor thesis at Inros Lackner SE in the field of energy-efficient laboratory planning for the Deutsches Elektronen-Synchrotron (DESY), Hamburg |
2015 - 2016 | Semester abroad at the Ostfalia University of Applied Sciences with with Chinese-German double degree, Wolfenbüttel |
2012 - 2016 | Bachelor study Energy Technology and Building Services Engineering at the Tongji University, Shanghai |
Publications
2024
Journal Articles
Liu, H.; Baumann, M.; Moon, H.; Zhang, X.; Dou, X.; Zarrabeitia, M.; Crenna, E.; Hischier, R.; Passerini, S.; Assen, N. von der; Weil, M.
Life cycle assessment of bio-based hard carbon for sodium-ion batteries across different production scales
2024. Chemical Engineering Journal, 495, 153410. doi:10.1016/j.cej.2024.153410
Life cycle assessment of bio-based hard carbon for sodium-ion batteries across different production scales
2024. Chemical Engineering Journal, 495, 153410. doi:10.1016/j.cej.2024.153410
Schmitz, M.; Meyer, F.; Oster, S.; Schmitt, T.; Rocha, C. P.; Green-Ojo, B.; Dechent, B.; Liu, H.; Schmitt, M.; Wehrli, M.; Weighman, K.; Eriksson, A. N. M.
Shaping the scientific future of environmental sciences in times of multiple crises: a summary of the 12th SETAC Young Environmental Scientists Meeting in Landau in der Pfalz 2023 -
2024. Environmental Sciences Europe, 36 (1), Art.-Nr.: 37. doi:10.1186/s12302-024-00846-4
Shaping the scientific future of environmental sciences in times of multiple crises: a summary of the 12th SETAC Young Environmental Scientists Meeting in Landau in der Pfalz 2023 -
2024. Environmental Sciences Europe, 36 (1), Art.-Nr.: 37. doi:10.1186/s12302-024-00846-4
Presentations
Weil, M.; Baumann, M.; Haruna, B.; Erakca, M.; Pinto Bautista, S.; Liu, H.; Jasper, F.; Bahmei, F.; Ersoy, H.; Pushpendra, P.; Das, S.; Khaki, E.; Güngörmüsler, M.; Kumar, M.
Assessing Sustainability - The Environmental Impact of Sodium-Ion Batt
2024. Automotive Battery Tech Summit 2024 (2024), Berlin, Germany, September 29–October 1, 2024
Assessing Sustainability - The Environmental Impact of Sodium-Ion Batt
2024. Automotive Battery Tech Summit 2024 (2024), Berlin, Germany, September 29–October 1, 2024
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto Bautista, S.; Liu, H.; Jasper, F.; Bahmei, F.; Ersoy, H.; Pushpendra, P.; Das, S.; Khaki, E.; Kumar, M.
Sustainability Challenges for the Recycling of Present and Emerging Batteries
2024, May 14. 14th International Advanced Automative Battery Conference (AABC Europe 2024), Strasbourg, France, May 13–16, 2024
Sustainability Challenges for the Recycling of Present and Emerging Batteries
2024, May 14. 14th International Advanced Automative Battery Conference (AABC Europe 2024), Strasbourg, France, May 13–16, 2024
2023
Presentations
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Bahmei, F.; Jasper, F.; Stuhm, P.; Das, S.; Buchgeister, J.; Ersoy, H.
Alternative Batterietechnologien – Fokus Natrium-Ionen-Batterie
2023. Weiterentwicklung und Umsetzung einer Rohstoffwende. Potentiale und Herausforderungen im Mobilitätssektor (2023), Bonn, Germany, November 27, 2023
Alternative Batterietechnologien – Fokus Natrium-Ionen-Batterie
2023. Weiterentwicklung und Umsetzung einer Rohstoffwende. Potentiale und Herausforderungen im Mobilitätssektor (2023), Bonn, Germany, November 27, 2023
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto Bautista, S.; Liu, H.; Mandade, P.; Jasper, F.; Bahmei, F.; Ersoy, H.
Sustainability-Focused Technology Assessment of Lithium and Post-Lithium Batteries – Resource Criticality, Recycling, and Prospective Life Cycle Assessment
2023. 13th International Advanced Automotive Battery Conference (AABC 2023), Mainz, Germany, June 19–22, 2023
Sustainability-Focused Technology Assessment of Lithium and Post-Lithium Batteries – Resource Criticality, Recycling, and Prospective Life Cycle Assessment
2023. 13th International Advanced Automotive Battery Conference (AABC 2023), Mainz, Germany, June 19–22, 2023
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto Bautista, S.; Liu, H.; Mandade, P.; Jasper, F.; Bahmei, F.; Ersoy, H.
Life-cycle oriented sustainability analysis of current and future battery systems
2023. 17th Society and Materials International Conference (SAM 2023), Karlsruhe, Germany, May 9–10, 2023
Life-cycle oriented sustainability analysis of current and future battery systems
2023. 17th Society and Materials International Conference (SAM 2023), Karlsruhe, Germany, May 9–10, 2023
2022
Journal Articles
Liu, H.; Baumann, M.; Dou, X.; Klemens, J.; Schneider, L.; Wurba, A.-K.; Häringer, M.; Scharfer, P.; Ehrenberg, H.; Schabel, W.; Fleischer, J.; von der Aßen, N.; Weil, M.
Tracing the technology development and trends of hard carbon anode materials - A market and patent analysis
2022. Journal of Energy Storage, 56 (B), Art.-Nr.: 105964. doi:10.1016/j.est.2022.105964
Tracing the technology development and trends of hard carbon anode materials - A market and patent analysis
2022. Journal of Energy Storage, 56 (B), Art.-Nr.: 105964. doi:10.1016/j.est.2022.105964
Moon, H.; Innocenti, A.; Liu, H.; Zhang, H.; Weil, M.; Zarrabeitia, M.; Passerini, S.
Bio‐Waste‐Derived Hard Carbon Anodes Through a Sustainable and Cost‐Effective Synthesis Process for Sodium‐Ion Batteries
2022. ChemSusChem, 16 (1), Art.-Nr.: e202201713. doi:10.1002/cssc.202201713
Bio‐Waste‐Derived Hard Carbon Anodes Through a Sustainable and Cost‐Effective Synthesis Process for Sodium‐Ion Batteries
2022. ChemSusChem, 16 (1), Art.-Nr.: e202201713. doi:10.1002/cssc.202201713
Presentations
Liu, H.
Prospective Life Cycle Assessment of Hard Carbon Anode Materials
2022. Science Slam, POLiS Cluster of Excellence Conclave 2022 (2022), Ulm, Germany, June 20–21, 2022
Prospective Life Cycle Assessment of Hard Carbon Anode Materials
2022. Science Slam, POLiS Cluster of Excellence Conclave 2022 (2022), Ulm, Germany, June 20–21, 2022
Liu, H.
Sustainability of Hard Carbon Anode Materials
2022. Helmholtz ESD Doktorandenworkshop (2022), Frankfurt am Main, Germany, May 31–June 1, 2022
Sustainability of Hard Carbon Anode Materials
2022. Helmholtz ESD Doktorandenworkshop (2022), Frankfurt am Main, Germany, May 31–June 1, 2022
Liu, H.; Aßen, N. von der; Baumann, M.; Weil, M.
Life Cycle Assessment of Hard Carbon as Anode Material for Post Lithium Batteries
2022. Lab Day, Technology and Society Lab (TSL), EMPA (2022), St. Gallen, Switzerland, June 22, 2022
Life Cycle Assessment of Hard Carbon as Anode Material for Post Lithium Batteries
2022. Lab Day, Technology and Society Lab (TSL), EMPA (2022), St. Gallen, Switzerland, June 22, 2022
Weil, M.; Baumann, M.; Binder, J.; Tomasini, C.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Ersoy, H.
Sustainability Implications of Emerging Batteries – Prospective LCA of Sodium and Magnesium Batteries
2022. 15th International Conference on Modern Materials and Technologies (CIMTEC 2022), Perugia, Italy, June 20–24, 2022
Sustainability Implications of Emerging Batteries – Prospective LCA of Sodium and Magnesium Batteries
2022. 15th International Conference on Modern Materials and Technologies (CIMTEC 2022), Perugia, Italy, June 20–24, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Ersoy, H.
Kreislaufwirtschaft Batterie: Recycling von gegenwärtige und zukünftige Batterien
2022. ZAWIW Herbstakademie 2022 (2022), Universität Ulm, September 26–29, 2022
Kreislaufwirtschaft Batterie: Recycling von gegenwärtige und zukünftige Batterien
2022. ZAWIW Herbstakademie 2022 (2022), Universität Ulm, September 26–29, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Ersoy, H.
Nachhaltigkeitsaspekte des Recyclings heutiger und zukünftiger Batterien
2022. 60th Tutzing-Symposion: Circular Economy - Schritte in die Zukunft (2022), Evangelische Akademie Tutzing, May 16–18, 2022
Nachhaltigkeitsaspekte des Recyclings heutiger und zukünftiger Batterien
2022. 60th Tutzing-Symposion: Circular Economy - Schritte in die Zukunft (2022), Evangelische Akademie Tutzing, May 16–18, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Ersoy, H.
Lebenszyklusorientierte Nachhaltigkeitsanalysen - Life Cycle Assessment von Batterien und Umweltaspekte des Recyclings
2022. Webinar „Energiewende: Kritische Rohstoffe für Batterien“ (2022), Online, March 17, 2022
Lebenszyklusorientierte Nachhaltigkeitsanalysen - Life Cycle Assessment von Batterien und Umweltaspekte des Recyclings
2022. Webinar „Energiewende: Kritische Rohstoffe für Batterien“ (2022), Online, March 17, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Jasper, F.; Kochuveedu, S. T.; Ersoy, H.
Life-cycle oriented sustainability analysis of current and future battery systems
2022. Laboratorium für Materialforschung-Kolloquium "Sustainable Materials and Circular Economy" (LaMa 2022), Giessen, Germany, July 8, 2022
Life-cycle oriented sustainability analysis of current and future battery systems
2022. Laboratorium für Materialforschung-Kolloquium "Sustainable Materials and Circular Economy" (LaMa 2022), Giessen, Germany, July 8, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Jasper, F.; Thomas Kochuveedu, S.; Bahmei, F.; Ersoy, H.
Data issues for sustainability assessment of present and emerging battery systems
2022. StoRIES Webinar: FAIR and open data for environmental, techno-economic and socio-economic assessments for Energy Storage (2022), Online, October 27, 2022
Data issues for sustainability assessment of present and emerging battery systems
2022. StoRIES Webinar: FAIR and open data for environmental, techno-economic and socio-economic assessments for Energy Storage (2022), Online, October 27, 2022
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Kochuveedu, S. T.; Bahmei, F.; Ersoy, H.
Lithium Batterien - Rohstoffbedarf & Recycling und die Suche nach Post-Lithium Batterien
2022. IWAR Vortragsreihe - Neues aus der Umwelttechnik (2022), Online, November 14, 2022
Lithium Batterien - Rohstoffbedarf & Recycling und die Suche nach Post-Lithium Batterien
2022. IWAR Vortragsreihe - Neues aus der Umwelttechnik (2022), Online, November 14, 2022
Posters
Liu, H.; Baumann, M.; Häringer, M.; Schmidt, M.; Schneider, L.; Peters, J.; Bauer, W.; Binder, J. R.; Weil, M.
Prospective sustainability screening of sodium-ion electrode materials
2022. 7th International Conference on Sodium Batteries (ICNaB 2022), Ulm, Germany, December 5–8, 2022
Prospective sustainability screening of sodium-ion electrode materials
2022. 7th International Conference on Sodium Batteries (ICNaB 2022), Ulm, Germany, December 5–8, 2022
Science Communication on the Internet
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Pinto, S.; Liu, H.; Mandade, P.; Ersoy, H.
Kreislaufwirtschaft Batterie: Recycling von gegenwärtige und zukünftige Batterien
2022
Kreislaufwirtschaft Batterie: Recycling von gegenwärtige und zukünftige Batterien
2022
2021
Conference Papers
Liu, H.; Tomasini, C. R.; Lan, L.; Li, J.; Zhang, X.; Aßen, N.; Weil, M.
Organic Waste for the Production of Hard Carbon for Batteries - A Life Cycle Assessment Perspective
2021. Waste-to-Resources 2021 : 9th International Symposium Circular Economy, MBT, MRF and Recycling. Ed.: M. Kühle-Weidemeier, 319–332, Cuvillier Verlag
Organic Waste for the Production of Hard Carbon for Batteries - A Life Cycle Assessment Perspective
2021. Waste-to-Resources 2021 : 9th International Symposium Circular Economy, MBT, MRF and Recycling. Ed.: M. Kühle-Weidemeier, 319–332, Cuvillier Verlag
Reports/Preprints
Liu, H.; Dou, X.; Gao, P.; Weil, M.
Sustainability Assessment of Carbon-based Aathode Materials for Batteries in the Context of Carbon Neutrality
2021
Sustainability Assessment of Carbon-based Aathode Materials for Batteries in the Context of Carbon Neutrality
2021
Presentations
Liu, H.
Sustainability Assessment of Anode Material for Post-Lithium Batteries in Early Design Phases
2021. PhD-day "EERA Energy Storage SP6: Technoeconomics and Sustainability" (2021), Online, December 7, 2021
Sustainability Assessment of Anode Material for Post-Lithium Batteries in Early Design Phases
2021. PhD-day "EERA Energy Storage SP6: Technoeconomics and Sustainability" (2021), Online, December 7, 2021
Liu, H.; Aßen, N. von der; Baumann, M.; Weil, M.
Market Assessment of Hard Carbon Anode Materials of Sodium-ion batteries - a Life Cycle Perspective
2021. European Materials Research Society Fall Meeting (E-MRS 2021), Online, September 20–23, 2021
Market Assessment of Hard Carbon Anode Materials of Sodium-ion batteries - a Life Cycle Perspective
2021. European Materials Research Society Fall Meeting (E-MRS 2021), Online, September 20–23, 2021
Liu, H.; Dou, X.; Aßen, N. von der; Weil, M.
Life Cycle Assessment of Bio- based Carbon Materials as Anode of Sodium-ion Batteries
2021, June 17. 25th Annual Green Chemistry and Engineering Conference (ACS 2021), Online, June 14–18, 2021
Life Cycle Assessment of Bio- based Carbon Materials as Anode of Sodium-ion Batteries
2021, June 17. 25th Annual Green Chemistry and Engineering Conference (ACS 2021), Online, June 14–18, 2021
Liu, H.; Montenegro, C.; Aßen, N. von der; Weil, M.
Sustainability Assessment of Promising Anode Materials for Post-Lithium Battery Systems in Early Design Phases
2021. Energy Transition and Sustainability Conference (APEEN 2021), Online, January 20–21, 2021
Sustainability Assessment of Promising Anode Materials for Post-Lithium Battery Systems in Early Design Phases
2021. Energy Transition and Sustainability Conference (APEEN 2021), Online, January 20–21, 2021
Liu, H.; Tomasini, C. R.; Lan, L.; Li, J.; Zhang, X.; Aßen, N. von der; Weil, M.
Organic Waste for the Production of Hard Carbon for Batteries – A Life Cycle Assessment Perspective
2021. 9th Waste-to-Resources - International Symposium Circular Economy, MBT, MRF and Recycling - Conference, Exhibition, Introductory Seminar (2021), Online, May 18–20, 2021
Organic Waste for the Production of Hard Carbon for Batteries – A Life Cycle Assessment Perspective
2021. 9th Waste-to-Resources - International Symposium Circular Economy, MBT, MRF and Recycling - Conference, Exhibition, Introductory Seminar (2021), Online, May 18–20, 2021
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Ersoy, H.; Jasper, F.; Liu, H.; Baur, D.; Bautista, S.
Prospective sustainability analysis of present and future battery systems
2021. Graduiertenkolleg Bayerisches Zentrum für Batterietechnik (2021), Online, February 18, 2021
Prospective sustainability analysis of present and future battery systems
2021. Graduiertenkolleg Bayerisches Zentrum für Batterietechnik (2021), Online, February 18, 2021
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Ersoy, H.; Jasper, F.; Liu, H.; Bautista, S.
Prospective sustainability analysis of present and future battery systems
2021. Cambridge University Energy Technology Society : Term Cards - Michaelmas (CUETS 2021), Cambridge, United Kingdom, November 9, 2021
Prospective sustainability analysis of present and future battery systems
2021. Cambridge University Energy Technology Society : Term Cards - Michaelmas (CUETS 2021), Cambridge, United Kingdom, November 9, 2021
Weil, M.; Erakca, M.; Peters, J.; Baumann, M.; Bautista, S.; Liu, H.; Ersoy, H.; Mandade, P.; Yang, J.; Jasper, F.; Emmerich, P.; Grunwald, A.
Recycling von Li-Ionen Batterien – Heute und Morgen
2021. STORENERGY Congress (2021), Online, November 17–18, 2021
Recycling von Li-Ionen Batterien – Heute und Morgen
2021. STORENERGY Congress (2021), Online, November 17–18, 2021
Weil, M.; Peters, J.; Baumann, M.; Erakca, M.; Bautista, S.; Liu, H.; Ersoy, H.
Recycling of Different Battery Types: A First LCA-Based Sustainability Perspective
2021. 11th Advanced automotive battery conference Europe (AABC 2021 2021), Online, January 19–20, 2021
Recycling of Different Battery Types: A First LCA-Based Sustainability Perspective
2021. 11th Advanced automotive battery conference Europe (AABC 2021 2021), Online, January 19–20, 2021
Weil, M.; Peters, J.; Baumann, M.; Erakca, M.; Bautista, S.; Liu, H.; Ersoy, H.; Mandade, P.; Yang, J.; Jasper, F.; Emmerich, P.
Challenges and Options for the Recycling of Present and Future Batteries
2021. 15th Conference Society And Materials (EcoSD 2021), Online, May 10–11, 2021
Challenges and Options for the Recycling of Present and Future Batteries
2021. 15th Conference Society And Materials (EcoSD 2021), Online, May 10–11, 2021
Weil, M.; Peters, J.; Baumann, M.; Erakca, M.; Bautista, S.; Liu, H.; Ersoy, H.; Mandade, P.; Yang, J.; Jasper, F.; Emmerich, P.; Grunwald, A.
Resource situation for electrochemical energy storage systems and recycling effects
2021. Kickoff der POF IV im Forschungsbereich Energie, Helmholtz ES2050 (2021), Online, July 2, 2021
Resource situation for electrochemical energy storage systems and recycling effects
2021. Kickoff der POF IV im Forschungsbereich Energie, Helmholtz ES2050 (2021), Online, July 2, 2021
Weil, M.; Peters, J.; Baumann, M.; Erakca, M.; Bautista, S.; Liu, H.; Ersoy, H.; Mandade, P.; Yang, J.; Jasper, F.; Emmerich, P.; Grunwald, A.
Internationale und Nationale Aktivitäten zum Themenfeld Nachhaltigkeit im Batteriesektor
2021. Kompetenznetzwerk Lithium-Ionen-Batterien "Nachhaltigkeit und Recycling" (KLiB 2021), Online, June 29, 2021
Internationale und Nationale Aktivitäten zum Themenfeld Nachhaltigkeit im Batteriesektor
2021. Kompetenznetzwerk Lithium-Ionen-Batterien "Nachhaltigkeit und Recycling" (KLiB 2021), Online, June 29, 2021
Posters
Liu, H.; Aßen, N. von der; Baumann, M.; Weil, M.
Identifying Product Life Cycle Stage of Hard Carbon Anode Materials
2021. 10th International Conference on Life Cycle Management (LCM 2021), Online, September 5–8, 2021
Identifying Product Life Cycle Stage of Hard Carbon Anode Materials
2021. 10th International Conference on Life Cycle Management (LCM 2021), Online, September 5–8, 2021
Liu, H.; Aßen, N. von der; Baumann, M.; Weil, M.
Comparative LCA of Emerging Carbon Electrode Materials: exploring sustainable process route of sodium-Ion battery manufacturing
2021. 10th Young Environmental Scientists Meeting (SAC 2021), Online, February 22–26, 2021
Comparative LCA of Emerging Carbon Electrode Materials: exploring sustainable process route of sodium-Ion battery manufacturing
2021. 10th Young Environmental Scientists Meeting (SAC 2021), Online, February 22–26, 2021
2020
Presentations
Liu, H.; Cornelius, G.; Trivedi, S.; Häringer, M.; Bertolini, S.
Cathode Materials for Monovalent Ions: from synthesis to processing
2020. GS-EWS Virtual Summer Symposium (2020), Online, September 21–22, 2020
Cathode Materials for Monovalent Ions: from synthesis to processing
2020. GS-EWS Virtual Summer Symposium (2020), Online, September 21–22, 2020
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Bautista, S.; Liu, H.; Ersoy, H.
Sustainability aspects for the recycling of present and future battery technologies
2020. E-Waste World Conference and Expo (2020), Online, November 18–19, 2020
Sustainability aspects for the recycling of present and future battery technologies
2020. E-Waste World Conference and Expo (2020), Online, November 18–19, 2020
Weil, M.; Baumann, M.; Peters, J.; Erakca, M.; Tomasini Montenegro, C.; Liu, H.; Baur, D.; Bautista, S.
Lebenszyklusorientierte Nachhaltigkeitsanalyse gegenwärtiger und zukünftiger Batteriesysteme
2020. STORENERGY congress (2020), Online, November 11–13, 2020
Lebenszyklusorientierte Nachhaltigkeitsanalyse gegenwärtiger und zukünftiger Batteriesysteme
2020. STORENERGY congress (2020), Online, November 11–13, 2020
Weil, M.; Montenegro, C. T.; Peters, J. F.; Baumann, M.; Zhao-Karger, Z.; Wolter, C.; Liu, H.; Ersoy, H.; Erakca, M.; Bautista, S.
Environmental Life Cycle Assessment of MgS-Batteries
2020. International Symposium on Magnesium Batteries (MAGBATT 2020), Online, September 8–9, 2020
Environmental Life Cycle Assessment of MgS-Batteries
2020. International Symposium on Magnesium Batteries (MAGBATT 2020), Online, September 8–9, 2020
Posters
Liu, H.; Dou, X.; Lan, L.; Li, J.; Aßen, N. von der; Weil, M.; Baumann, M.
A Review for Environmental Analyses of Sodium-Ion Battery Systems and a Preliminary Life Cycle Assessment of Anode Material Manufacturing
2020. 41st SETAC North America (2020), Online, November 15–19, 2020
A Review for Environmental Analyses of Sodium-Ion Battery Systems and a Preliminary Life Cycle Assessment of Anode Material Manufacturing
2020. 41st SETAC North America (2020), Online, November 15–19, 2020