Abstract
Flexible carbon electrode with high performance from silk fabric was fabricated by a simple approach. Silk fabric was uniformly dyed with heteroatom-enriched dye molecules by a traditional dyeing process, followed by direct pyrolysis. The as-prepared heteroatom-co-doped carbonized silk fabric exhibits a significantly improved electrochemical performance with the specific capacitance of 255.95 F g−1 at the scan rate of 2 mV s−1 using 1 M Na2SO4 electrolyte, a wide operation voltage window as well as a good cycling life stability (8% capacitance loss over 5000 cycles). The excellent capacitive performance can be attributed to the multiple synergistic effects between the double-layer capacitance (hierarchical porosity, good wettability and conductivity) and the extra pseudocapacitance (N, O and S heteroatom co-doping). Moreover, the carbonized dyed silk fabric possesses wearability and lightweight. Importantly, the convenient approach can provide industrial-grade production of heteroatom-co-doped silk fabric-based carbon electrode materials for applications in flexible energy storage devices.
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This work was supported by the National Natural Science Foundation of China (No. 51203018).
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Li, X., Zhao, J., Cai, Z. et al. A dyeing-induced heteroatom-co-doped route toward flexible carbon electrode derived from silk fabric. J Mater Sci 53, 7735–7743 (2018). https://doi.org/10.1007/s10853-018-2100-3
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DOI: https://doi.org/10.1007/s10853-018-2100-3