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Bio-inspired interfaces for easy-to-recycle lithium-ion batteries

Jin, Congrui; Yang, Zhen; Li, Jianlin; Zheng, Yijing; Pfleging, Wilhelm; Tang, Tian

The recycling of spent lithium-ion batteries has significant potential to benefit our society economically and environmentally as well as preserving raw materials. Although diverse
process chains have been applied or under development to recycle batteries, a common, critical issue for battery recycling is the separation of the metallic current collector from the composite film of the electrode. In this study, inspired by the amazing controllable attachment and detachment ability of geckos’ foot-hairs, microscale near-surface architecture is designed on the interface between the current collector and the composite film in lithium-ion batteries, so that it displays controllable and directional adhesion, i.e., enhanced adhesion can be obtained during its lifetime to cope with the substantial volume changes of the composite film upon intercalation and deintercalation, whereas during recycling, the composite layer of the electrode can be easily peeled off from the current collector in a certain direction. This study is the first application of structural adhesives for the development of easy-to-recycle lithium-ion batteries. This technology can also be extended to other electronic products to avoid an ever-growing volume of electronic waste. ... mehr

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DOI: 10.1016/j.eml.2019.100594
Zitationen: 1
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2352-4316
KITopen-ID: 1000100345
HGF-Programm 37.01.02 (POF III, LK 01)
Components and Cells
Erschienen in Extreme mechanics letters
Band 34
Seiten Article no: 100594
Vorab online veröffentlicht am 31.10.2019
Schlagwörter battery recycling; lithium-ion batteries; bio-inspired interfaces; directional adhesion; gecko’s feet
Nachgewiesen in Web of Science
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