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. 2022 Apr 13;14:104. doi: 10.1007/s40820-022-00849-x

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 7 — a The preparation process of BC-CNT-NZ, the detailed configuration of SCMFC and its compartments, and the role of BC-CNT-NZ in SCMFC [152]. b Photographs of S-CNFs paper, paper fuel cells and the power density of paper fuel cells [153]. c Schematic structure of the organic solar cell on CNCs substrates (left) and image of an assembled solar cell (right) [111]. d Portable paper solar cells based on foldable and lightweight transparent conductive nanofiber paper [106]. e NCP and the device performance of NCP-based PSCs [156]