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Zhou X, Liu Y, Gao Z, Min P, Liu J, Yu ZZ, Nicolosi V, Zhang HB. Biphasic GaIn Alloy Constructed Stable Percolation Network in Polymer Composites over Ultrabroad Temperature Region. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310849. [PMID: 38185468 DOI: 10.1002/adma.202310849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/18/2023] [Indexed: 01/09/2024]
Abstract
Flexible and adaptable polymer composites with high-performance reliability over wide temperature range are imperative for various applications. However, the distinct filler-matrix thermomechanical behaviors often cause severe structure damage and performance degradation upon large thermal shock. To address this issue, a general strategy is proposed to construct leakage-free, self-adaptive, stable percolation networks in polymer composites over wide temperature (77-473 K) with biphasic Ga35In65 alloy. The in situ micro-CT technology, for the first time, reveals the conformable phase transitions of Ga35In65 alloys in the polymer matrix that help repair the disruptive conductive networks over large temperature variations. The cryo-expanded Ga compensates the disruptive carbon networks at low temperatures, and flowable Ga and melted In at high temperatures conformably fill and repair the deboned interfaces and yielded crevices. As a proof-of-concept, this temperature-resistant composite demonstrates superb electrical conductivity and electromagnetic interference shielding properties and stability even after a large temperature shock (ΔT = 396 K). Furthermore, the superiority of the construction of temperature self-adaptive networks within the composite enables them for additive manufacturing of application-oriented components. This work offers helpful inspiration for developing high-performance polymer composites for extreme-temperature applications.
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Affiliation(s)
- Xinfeng Zhou
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yue Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Zijie Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Peng Min
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ji Liu
- School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Advanced Materials Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Valeria Nicolosi
- School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Advanced Materials Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin 2, Ireland
| | - Hao-Bin Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, China
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Yu B, Long J, Huang T, Xiang Z, Liu M, Zhang X, Zhu J, Yu H. Core-Sheath Fiber-Based Triboelectric Nanogenerators for Energy Harvesting and Self-Powered Straight-Arm Sit-Up Sensing. ACS OMEGA 2023; 8:31427-31435. [PMID: 37663522 PMCID: PMC10468956 DOI: 10.1021/acsomega.3c04090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 08/02/2023] [Indexed: 09/05/2023]
Abstract
Fiber-based triboelectric nanogenerators (F-TENGs), a green and sustainable energy-harvesting and transformation technology, hold great potential in the areas of portable energy harvesters and smart wearable sensors. Herein, the core-sheath structure F-TENGs (CF-TENGs) are developed by using continuous production equipment. The CF-TENGs, consisting of an elastic conductive fiber (core layer) and silicone rubber (sheath layer), can simultaneously accomplish stable reversible strain and excellent electrical output performance. High outputs (an open-circuit voltage of 17.5 V and a short-circuit current of 0.1 μA at a frequency of 1 Hz) can be attained when the CF-TENGs (a length of 5 cm) are contacted with a nylon fabric. The CF-TENGs not only act as self-powered sensors for applications in motion monitoring but also efficiently transfer mechanical energy into electric energy. As self-powered wearable sensors, the CF-TENGs can accurately indicate various human physiological movements. Moreover, they can be applied on straight-arm sit-up sensing to achieve standardized sport testing. Importantly, a CF-TENG-based weaved fabric presents high electrical performance to meet requirements as an energy harvester. These CF-TENGs provide a significant insight to facilitate the development of fiber-based triboelectric applications.
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Affiliation(s)
- Bin Yu
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Jing Long
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Tao Huang
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Zhengchen Xiang
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Mengjiao Liu
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Xin Zhang
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
| | - Jianghua Zhu
- Department
of Physical Education, Donghua University, Shanghai 201620, P. R. China
| | - Hao Yu
- State
Key Lab for Modification of Chemical Fibers & Polymer Materials,
College of Material Science & Engineering, Donghua University, Shanghai 201620, P. R. China
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