Power systems and electronic devices that are bulky and rigid are not practical for use in wearable applications that require flexibility and breathability. To address this, a range of 1D energy harvesting and storage devices have been fabricated that show promise for such applications compared with their 2D and 3D counterparts. These 1D devices are based on fibres that are flexible and can accommodate deformation, for example, by twisting and stretching. The fibres can be woven into textiles and fabrics that breathe freely or can be integrated into different materials that fit the curved surface of the human body. In this Review, the development of fibre-based energy harvesting and storage devices is presented, focusing on dye-sensitized solar cells, lithium-ion batteries, supercapacitors and their integrated devices. An emphasis is placed on the interface between the active materials and the electrodes or electrolyte in the 1D devices. The differing properties of these interfaces compared with those in 2D and 3D devices are derived from the curved surface and long charge transport path in 1D electrodes.
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This work was supported by the Ministry of Science and Technology of China (2016YFA0203302), National Natural Science Foundation of China (21634003, 51573027, 51403038, 51673043, 21604012) and the Science and Technology Commission of Shanghai Municipality (16JC1400702, 15XD1500400, 15JC1490200). This work was supported in part by the Samsung Advanced Institute of Technology (SAIT) Global Research Outreach (GRO) Program (IO140919-02248-01).
The authors declare no competing interests.
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Sun, H., Zhang, Y., Zhang, J. et al. Energy harvesting and storage in 1D devices. Nat Rev Mater 2, 17023 (2017). https://doi.org/10.1038/natrevmats.2017.23
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