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Fluorinated MOF-enabled flexible triboelectric system with integrated energy harvesting and storage AITranslate

Jing Liu1; Dong Wang1; Dingyi Yang1; Yong Wang2; Yizhang Wu3; Yongmei Wang1;
1.School of Physics, School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China
2.Academy of Advanced Interdisciplinary Research, Faculty of Integrated Circuits, Xidian University, Xi’an 710071, China
3.Department of Applied Physical Sciences, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
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Abstract AITranslate

Triboelectric nanogenerators (TENGs) are constrained by the inherent material limitations and systemic performance bottlenecks. Conventional polydimethylsiloxane (PDMS) triboelectric layers offer limited control over surface electronegativity, interfacial polarization, and charge retention, hindering stable self-powered operation. To address these challenges, we report a flexible triboelectric system based on a fluorinated metal-organic framework (MOF), UiO-66-4F, which integrates energy harvesting and storage via coordinated design across materials, devices, and circuits. The triboelectric nanogenerator (UF-TENG), fabricated from a UiO-66-4F@PDMS composite layer with 10 wt% filler, generates an open-circuit voltage of 180 V and a short-circuit current of 11 μA, representing 3- and 1.83-fold enhancements over pristine PDMS. The UF-TENG also exhibits stable output over 10,000 cycles under 20% tensile strain. The flexible supercapacitor incorporating 20 wt% UiO-66-4F/LiCl exhibits lower high-frequency impedance and near-ideal low-frequency phase angle, and has typical double-layer capacitance characteristics for efficient charge management. The output-voltage fluctuation of the integrated device is 60% lower than that of a separate TENG, maintaining a stable output for 4,500 s, effectively improving power storage and output stability. This work demonstrates that functional group engineering in MOFs not only enhances triboelectric charge generation but also facilitates efficient charge management, offering a compact, durable, and integrable power solution for wearable electronics.

KeyWords AITranslate

metal-organic framework supercapacitor self-powered systems triboelectric nanogenerator UiO-66-4F

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Basic Information:

DOI：10.23919/CHAIN.2026.000006

Chinese Library Classification Number:

Citation Information:

Triboelectric nanogenerators (TENGs) are constrained by the inherent material limitations and systemic performance bottlenecks. Conventional polydimethylsiloxane (PDMS) triboelectric layers offer limited control over surface electronegativity, interfacial polarization, and charge retention, hindering stable self-powered operation. To address these challenges, we report a flexible triboelectric system based on a fluorinated metal-organic framework (MOF), UiO-66-4F, which integrates energy harvesting and storage via coordinated design across materials, devices, and circuits. The triboelectric nanogenerator (UF-TENG), fabricated from a UiO-66-4F@PDMS composite layer with 10 wt% filler, generates an open-circuit voltage of 180 V and a short-circuit current of 11 μA, representing 3- and 1.83-fold enhancements over pristine PDMS. The UF-TENG also exhibits stable output over 10,000 cycles under 20% tensile strain. The flexible supercapacitor incorporating 20 wt% UiO-66-4F/LiCl exhibits lower high-frequency impedance and near-ideal low-frequency phase angle, and has typical double-layer capacitance characteristics for efficient charge management. The output-voltage fluctuation of the integrated device is 60% lower than that of a separate TENG, maintaining a stable output for 4,500 s, effectively improving power storage and output stability. This work demonstrates that functional group engineering in MOFs not only enhances triboelectric charge generation but also facilitates efficient charge management, offering a compact, durable, and integrable power solution for wearable electronics.

quote

GB/T 7714-2015 [1] Jing Liu, Dong Wang, Dingyi Yang, et al. Fluorinated MOF-enabled flexible triboelectric system with integrated energy harvesting and storage[J]. Chain, 2026, 3(2): 214-228. DOI:10.23919/CHAIN.2026.000006.
MLA [1] Jing Liu, et al., "Fluorinated MOF-enabled flexible triboelectric system with integrated energy harvesting and storage." Chain, vol. 3, no. 2, 2026, pp. 214-228, https://doi.org/10.23919/CHAIN.2026.000006.
APA [1] Jing Liu, Dong Wang, Dingyi Yang, Yong Wang, Yizhang Wu, & Yongmei Wang. (2026). Fluorinated MOF-enabled flexible triboelectric system with integrated energy harvesting and storage. Chain, 3(2), 214-228. https://doi.org/10.23919/CHAIN.2026.000006
IEEE [1] Jing Liu, Dong Wang, Dingyi Yang, Yong Wang, Yizhang Wu, and Yongmei Wang, "Fluorinated MOF-enabled flexible triboelectric system with integrated energy harvesting and storage," Chain, vol. 3, no. 2, pp. 214-228, 2026, doi: 10.23919/CHAIN.2026.000006. keywords: {metal-organic framework;supercapacitor;self-powered systems;triboelectric nanogenerator;UiO-66-4F}