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. 2021 Aug 5;8(19):2100774. doi: 10.1002/advs.202100774

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© 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Planar thin film: a) image of 2D thin‐film battery. Reproduced with permission.^[ ³²⁵ ^] Copyright 2016, Elsevier. b) Cross sectional image. Reproduced with permission.^[ ³²⁶ ^] Copyright 2016, Elsevier.