Tailored Pre-Lithiation Using Melt-Deposited Lithium Thin Films
Source abstract
Abstract
The user demands lithium-ion batteries in mobile applications, and electric vehicles request steady improvement in terms of capacity and cycle life. This study shows one way to compensate for capacity losses due to SEI formation during the first cycles. A fast and simple approach of electrolyte-free direct-contact pre-lithiation leads to targeted degrees of pre-lithiation for graphite electrodes. It uses tailor-made lithium thin films with 1–5 µm lithium films produced by lithium melt deposition as a lithium source. These pre-lithiated graphite electrodes show 6.5% capacity increase after the first cycles in NCM full cells. In this study, the influence of the pre-lithiation parameters—applied pressure, temperature and pressing time—on the pre-lithiation process is examined.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemical Surface and Battery Technology, Fraunhofer Institute for Material and Beam Technology IWS, Winterbergstaße 28, 01237 Dresden, Germany
Institute of Materials Sience, Technische Universität Dresden, Helmholtzstraße 7, 01069 Dresden, Germany
Inorganic Chemistry I, Technische Universität Dresden, Helmholtzstraße 10, 01069 Dresden, Germany
Funding
Federal Ministry of Education and Research of Germany BMBF
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