TY - JOUR
T1 - Mechanical Structuring of Lithium-Ion Battery Electrodes Using an Embossing Roller
AU - Keilhofer, Josef
AU - Schaffranka, Leon Wolfgang Ferdinand
AU - Wuttke, Amy
AU - Günter, Florian Josef
AU - Hille, Lucas
AU - Dorau, Filip Adam
AU - Daub, Rüdiger
N1 - Publisher Copyright:
© 2023 The Authors. Energy Technology published by Wiley-VCH GmbH.
PY - 2023
Y1 - 2023
N2 - Highly performing lithium-ion batteries are essential for the electrification of the transport sector. However, the two performance criteria, high power density and high energy density, inversely correlate with each other via the mass loading of the electrodes. To achieve high charging and discharging rates at high energy densities, structuring of electrodes is a proven method. Currently, structures are mostly realized by laser ablation, which comes along with material loss and low process rates. Herein, a concept for electrode structuring through mechanical embossing in a high-throughput roll-to-roll process is elaborated. Different integration options are described and the challenges are discussed. To provide a proof of concept, a hand-operated embossing device is built and used to structure graphite anodes. In a rate capability test, an increase in discharge capacity at medium C-rates by up to 14.3% is observed.
AB - Highly performing lithium-ion batteries are essential for the electrification of the transport sector. However, the two performance criteria, high power density and high energy density, inversely correlate with each other via the mass loading of the electrodes. To achieve high charging and discharging rates at high energy densities, structuring of electrodes is a proven method. Currently, structures are mostly realized by laser ablation, which comes along with material loss and low process rates. Herein, a concept for electrode structuring through mechanical embossing in a high-throughput roll-to-roll process is elaborated. Different integration options are described and the challenges are discussed. To provide a proof of concept, a hand-operated embossing device is built and used to structure graphite anodes. In a rate capability test, an increase in discharge capacity at medium C-rates by up to 14.3% is observed.
KW - electrode designs
KW - electrode structuring
KW - lithium-ion batteries
KW - microembossing
UR - http://www.scopus.com/inward/record.url?scp=85150652732&partnerID=8YFLogxK
U2 - 10.1002/ente.202200869
DO - 10.1002/ente.202200869
M3 - Article
AN - SCOPUS:85150652732
SN - 2194-4288
JO - Energy Technology
JF - Energy Technology
ER -