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Advances in 3D Thin‐Film Li‐Ion Batteries
Author(s) -
Moitzheim Sébastien,
Put Brecht,
Vereecken Philippe M.
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201900805
Subject(s) - materials science , anode , thin film , cathode , footprint , electrolyte , stack (abstract data type) , planar , battery (electricity) , substrate (aquarium) , nanotechnology , electrode , energy storage , current collector , coating , optoelectronics , computer science , electrical engineering , computer graphics (images) , chemistry , engineering , paleontology , power (physics) , physics , oceanography , quantum mechanics , geology , biology , programming language
The status and progress toward solid‐state 3D thin‐film Li‐ion microbatteries is reviewed. Planar thin‐film batteries (TFBs) are commercially available. A major issue with planar TFBs, however, is that the total footprint capacity is limited, as only a relatively small electrode volume is available for energy storage. Coating of the complete battery thin‐film stack, i.e., cathode/solid electrolyte/anode, over a 3D microstructured current collector substrate can provide higher footprint capacity as a result of the surface area enhancement. However, thus far, no 3D TFB with footprint capacity exceeding the limit of ≈250 µAh cm −2 are achieved. The authors provide a status of the individual components: thin‐film cathodes, anodes, and thin‐film solid electrolyte conformally coated over 3D substrates with periodic microstructures. Guidance for designing a 3D TFB with optimum capacity is also provided.