greenSPEED Poster at the Battery 2030+ Annual Conference

06. & 07. May, 2025 | Münster, Germany

The 5th Annual Conference gave the participants the change to network with key stakeholders of the battery research community and engage in meaningful discussions to empower green innovation in this field. It included presentations from industry, keynote presentations, Young scientists’ sessions, poster pitches and poster sessions.

One of the posters presented there was a poster titled “Optimization of Fast-Charge Current Protocols for Electrochemical Prelithiation of Pure Silicon Anode Lithium-lon Batteries” by Forschungszentrum Jülich, in cooperation with RWTH Aachen and JARA-Energy.

Authors:

Feng Cai (1), Shiho Honda (1, 2), Hyunsang Joo (1, 2), Benedikt Konersmann (1, 2), Egbert Figgemeier (1, 2, 3)
1 RWTH Aachen University, Institute for Power Electronics and Electrical Drives (ISEA, CARL), Campus-Boulevard 89, Aachen 52074, Nordrhein-Westfalen, Germany
2 Forschungszentrum Jülich GmbH, Helmholtz Institute Münster (HI MS, IMD-4), Campus-Boulevard 89, Aachen 52074, Nordrhein-Westfalen, Germany
3 JARA-Energy, Wilhelm-Johnen-Straße, 52425 Jülich, Nordrhein-Westfalen, Germany

Abstract:

Silicon (Si) anodes offer ultra-high theoretical capacity (~3579 mAh/g), but low initial coulombic efficiency (ICE) from irreversible lithium loss remains a key challenge. Prelithiation effectively addresses this issue. This study investigates a highfrequency pulsed current (PC-1C-2s/1s) prelithiation method versus constant current (CC). The pulsed current (PC) achieved comparable ICE (84.6%) and cycling life (~110 cycles), while shortening prelithiation time from 60 to 9 minutes.