基于铋氧族化合物/碳纳米管复合物的柔性微型超级电容器

doi:10.11896/cldb.24050056

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Abstract Bi₂O₃ nanocrystals were grown on carbon nanotubes through hydrothermal decomposition method with Bi(NO₃)₃-5H₂O as raw material and carboxylated carbon nanotubes as substrate, and then Bi₂S₃ and Bi₂Se₃ crystals were prepared using thioacetamide (TAA) and selenium powder as sulfur and selenium sources to produce bismuth chalcogenides/carbon nanotubes composite (Bi₂X₃/CNT, X=O, S, Se). By using 3D printing technique, interdigital electrode pattern substrate was fabricated from silicone rubber, and flexible on-chip micro-supercapacitors were assembled with Bi₂X₃/CNT as electroactive materials. The results indicated that the areal capacitances of Bi₂O₃@CNT, Bi₂S₃@CNT and Bi₂Se₃@CNT reached 805.5 mF/cm², 1 232.5 mF/cm² and 1 556.8 mF/cm² at a current density of 2 mA/cm², respectively, and the capacitances maintained 83.2%, 80.9% and 90.0% after 10 000 cyclic voltammetry tests. The output voltage could be expanded up to 3 folds by connecting three miniature capacitors in series, and the capacitance showed 3 folds increase when connecting three supercapacitors in parallel, which exhibited excellent expandability.

Key words： bismuth chalcogenides carbon nanotube interdigital electrode flexible micro-supercapacitor

Published: 25 June 2025 Online: 2025-06-19

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TM53

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	Articles by authors
	CHEN Long
	CHEN Zhenyu
	ZENG Xu
	WU Yulong
	GUO Yani
	SUN Yimin

Cite this article:

CHEN Long,CHEN Zhenyu,ZENG Xu, et al. Flexible Micro-supercapacitor Based on Bismuth Chalcogenides/Carbon Nanotubes Composite[J]. Materials Reports, 2025, 39(12): 24050056-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24050056 OR https://www.mater-rep.com/EN/Y2025/V39/I12/24050056

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