CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xiangjun Qi,Hongtao Zhao,Lihong Wang,Fengqiang Sun,Xiaorui Ye,Xueji Zhang,Mingwei Tian,Lijun Qu
Emerging underwater exploration suggests the need for subaqueous E-textiles. Large-deformation signal feedback for swimming motions and body thermal protection against hypothermia are urgently desirable. Here, underwater-usable E-textiles with remarkable sensing and electrothermal behaviors are introduced, which are composed of stretchable core-sheath fibers based on liquid metal fabricated via a coaxial wet-spinning strategy. The fibers possess outstanding specific resistance (∼0.05 Ω·cm −1 ) and robust sensing detection range for both strain (∼600% elongation) and pressure (∼30 MPa), as well as a quick response time (30 ms). Meanwhile, the fabricated E-textiles present excellent low-power-driving electrothermal performance (1.5 W, ∼50 °C) even at underwater conditions. Remarkably, the conducting liquid metal circuit can be well reversed even after being entirely broken out of the sensing ranges. For proof of concept, an underwater glove integrating motion sensing, visual danger warning and hypothermia prevention is exhibited, which has potential for application in underwater exploration.
研究领域:
材料科学
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生物医学工程
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITE STRUCTURES
·
2023
·
IF 6.3
Xiaoli Wu,Yunyi Li,Ting Yin,Yijun Liao,Site Mo,Wanxia Huang
The aligned CNT-based composite in transverse direction to the alignment is considered as completely insulating and unsuitable for utilization in de-icing system. Here, we have found that the aligned CNT-based composite in transverse direction to the alignment exhibited excellent electrothermal performance at high voltage, for the first time. Furthermore, we compared and investigated the electrical and electrothermal performance of the aligned and random non-percolative CNT/crosslinked polyethylene (XLPE) composites at high voltage. A temperature increase of 7.5–72.7 ℃ at a record high voltage of 900–3100 V is reached for the aligned CNT/XLPE composites. The filed emission at high voltage enables the electron to transfer along the CNTs radial direction , resulting in joule heating for the aligned CNT/XLPE composites in transverse direction to the alignment. Besides, the non-percolative structure contributes a temperature increase of 8.2–40.1 ℃ at a applied voltage of 900–2800 V to random CNT/XLPE composites. The high applied voltages is significantly higher than rGO-based composites. More importantly, effective de-icing and anti-icing performance at high voltage of 900–2800 V are achieved for the random non-percolative and aligned CNT-based composites at −20 ℃. These results demonstrate the potential of applying the CNT/XLPE composites in de/anti-icing system of transmission-lines and other fields requiring joule heating at high voltage.
研究领域:
材料科学
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电气工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 4
·045009
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IF 1.62
Yongjing Peng,Jianping Hu,Zhen Fan,Pengkang Xie,Jian Wang,Peng Wang
Surface icing in the transmission lines may cause serious accidents. Although the superhydrophobic/electrothermal synergistically anti-icing strategy has been introduced, most coatings tended to lose superhydrophobicity under large deformation. In this research, we prepared a kind of stretchable superhydrophobic coating by partially embedding the modified graphene into the Ecoflex elastomer. The excellent resilience of the Ecoflex elastomer together with the outstanding interficial area of graphene results in the maintainment of superhydrophobicity even under 300% strain. Furthermore, this coating has outstanding superhydrophobic and electrothermal property simutaneously due to the introduction of graphene. After applying 20 V voltage, this coating could melt 2 mm thick ice layer within 115 s. Moreover, this superhydrophobic coating demonstrated excellent mechanical and chemical durability, and outstanding thermostability.
研究领域:
材料科学
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表面工程
✓ 已验证
DOI
高影响因子
Frontiers in Energy Research
·
2022
·
IF 3.858
Cui Jiedong,Lu Pengbo,Li Yinghui,Xu Ke,Li Yang,Shen Haoyu,Liu Chaocheng,Zhang Tianyi,Liu Detao
The flexible and transparent film heaters (FTFHs) with the advantages of mechanical flexibility, portability, and excellent electrothermal performance, are key to the next generation portable, wearable heaters and thermal protection systems. However, the present flexible and transparent substrates of FTFHs are fabricated by typical plastic PET films, which suffer from poor interfacial adhesion with the thermally conductive materials. In this work, the transparent regenerated cellulose fibers made of completely dissolved in NMMO solution followed by regeneration process is presented to disperse and support carbon nanotubes (CNTs) by a vacuum-dewatering process. In the presence of cellulose fibers, these CNTs have strong hydrogen bonding properties in the dehydration-deposition process and thus respond to tight intertwining structures in fibrous composites. The resulting regenerated cellulose fibers exhibit high optical transparency of 88% (@550 nm) and good mechanical properties (30 MPa). Interestingly, the FTFHs show a rapid heating response, high generation temperature, and resistance stability for up to 2 h. The FTFHs made with earth-abundant, cost-effective, and recyclable materials, have excellent potential in the areas of green flexible and transparent film heaters.
研究领域:
材料科学
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能源技术
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 5
·2652-2662
·
IF 2.047
Xiao Zhen,Guo Rui,He Xinping,Gan Yongping,Zhang Jun,Huang Hui,Zhang Wenkui,Wang Bingjia,Han Yi,Xia Yang
Carbon-based conductive polymer composites are thriving as promising electrothermal materials for a vast array of applications. However, the low working temperature (< 100°C) of most carbon-based conductive polymer composites due to the low melting point and inferior temperature resistance of polymer matrix severely restricts their high-temperature applications. Herein, a series of thin electric heating films composed of highly thermally stable polybenzimidazole (PBI) as polymer matrix and low-cost carbon black nanoparticles (Super P, SP) as conductive fillers are successfully developed to significantly increase the maximum working temperature as high as >200°C under relatively low applied voltage. The morphology, microstructure, electrical properties, and electrothermal behavior of the PBI/SP composites are systematically studied as a function of SP content. By introducing 15–25 wt.% SP conductive fillers, SP nanoparticles with uniform spatial dispersion are tightly anchored on the surface and tip of fiber-like villous PBI matrix, forming continuous highly conductive networks. However, the conductive filler content exceeds to 30 wt.%, and SP nanoparticles tend to locally clump together in aggregation, resulting in potential safety issues. Impressively, PBI/SP composite with 25 wt.% SP content (PBI/SP-25) exhibits superior electrothermal performance, including rapid temperature responsiveness, high maximum working temperature, superior heating uniformity, and remarkable electrothermal reproducibility. As an integrated thin-film heater for water boilers, PBI/SP-25 electrothermal film heats 100 ml of water to 99.5°C within 4 min at 25 V, demonstrating great potential in household electrical appliances.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Xianhong Zheng,Qiaole Hu,Zongqian Wang,Wenqi Nie,Peng Wang,Changlong Li
Smart wearable electronics have drawn increasing attention for their potential applications in personal thermal management, human health monitoring, portable energy conversion/storage, electronic skin and so on. However, it is still a critical challenge to fabricate the multifunctional textiles with tunable morphology and performance while performing well in flexibility, air permeability , wearing comfortability. Herein, we develop a novel roll-to-roll layer-by-layer assembly strategy to construct bark-shaped carbon nanotube (CNT)/Ti 3 C 2 T x MXene composite film on the fiber surface. The fabricated bark-shaped CNT/MXene decorated fabrics (CMFs) exhibit good flexibility, air permeability and electrical conductivity (sheet resistance, 6.6 Ω/□). In addition, the CMFs demonstrate good electrothermal performance (70.9 °C, 5 V), electromagnetic interference (EMI) shielding performance (EMI shielding effectiveness, 30.0 dB under X-Brand), and high sensitivity as the flexible piezoresistive sensors for monitoring the human motions. Importantly, our CMFs show distinctive EMI shielding mechanism, where a great proportion of incident electromagnetic microwaves are reflected by the bark-shaped CNT/MXene films owing to the multi-interface scattering effects. This work may provide a new strategy for the fabrication of multifunctional textile-based electronics and pave the way for smart wearable electronics.
研究领域:
材料科学
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电子工程
·
纺织科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2022
·
IF 6.137
Xiang-Le Liu,Min Li,Wen-Hao Geng,Weiwei Cao,Yun-Hua Tian,Tong-Yu Li,Peng-Shuai Bin,Peng-Fei Qian,Hong-Zhang Geng
Carbon nanomaterials are ideal materials for electrothermal applications because of their superior thermal conductivity, electrical conductivity, and mechanical properties. Electrothermal composites with excellent performance should have the characteristics of rapid temperature response, uniform heating temperature distribution, and good thermal stability after prolonged heating. However, for previously prepared electrothermal composites still have some shortcomings such as long temperature response time, uneven temperature distribution and poor thermal stability after long time heating. In this study, the composite electrothermal films with excellent performances were obtained by a layer-by-layer deposition approach, which were synthesized by pouring epigallocatechin gallate-functionalized multi-walled carbon nanotubes (E-MWCNTs) into a polytetrafluoroethylene mold and subsequently curing the polyvinyl alcohol (PVA) solution on the CNT layer. The electro-heating behavior of composite electrothermal film with different content and size was investigated by applying various voltages. They exhibit excellent electrothermal property, that is, a rapid temperature response, which can reach the steady-state temperature ( T MAX ) within 90 s. In addition, the maximum temperature can reach about 140 °C at 12 V. It was observed that the temperature of the composite electrothermal film has no significant change during the cycle tests of various voltages and 5 h aging time. According to the results of the experiment, the electrothermal properties of the composite electrothermal films are affected by the content of multi-walled carbon nanotubes (MWCNTs) and the applied voltage, which means that we can achieve accurate control of its properties by adjusting the content of MWCNTs and the applied voltage. Moreover, we have great expectations that these composite electrothermal films will have broad prospects for thermal management in wearable applications and electro-devices.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Xin Tao,Dongxue Tian,Shanqing Liang,Peng Jiang,Feng Fu
As a renewable resources, wood is limited to functional applications due to its defects of moisture deformation, water swelling, and flammability. At present, wood-derived cellulose electrothermal composites has excellent Joule heating performance, but it faces the dilemma of limited operating environment. To this end, multiwall carbon nanotubes (MWCNTs) were deposited on the wood-derived cellulose skeleton (WCS) surface by multiple dipping-drying cycles to obtain electrothermal performance. Ammonium polyphosphate and trichloro (1 H,1 H,2 H,2 H-tridecafluoro-n-octyl) silane were then sequentially deposited on MWCNTs/WCS surface to obtain better flame retardant and hydrophobic performance. The resultant multifunctional MWCNTs/WCS (MMW) achieved an average surface temperature of 119.3 °C at 4.0 V and retaining repeatability under power ON/OFF cycles. The residue amount of MMW was increased by 105.6% and the heat release capacity was decreased by 92.9% compared with WCS, which exhibited an excellent flame retardancy. Moreover, MMW had a water contact angle of 145.6° and showed durable hydrophobicity in harsh operating conditions. It is believed that MMW with electrothermal, flame retardant, and hydrophobic properties has promising applications in thermal therapy, aircraft deicing, indoor heating, and smart electronic wallpaper.
研究领域:
材料科学
·
能源工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2023
·
IF 7.4
Gonghui Gu,Yaowen Pei,Tao Ma,Feng Chen,Jinglin Zhang,Fang Xu
Carbon fiber-reinforced geopolymer composite (CFGC) can be used as the energy conversion layer of airport pavement, thus converting electromagnetic energy into heat energy via induction heating technology to melt snow and ice on pavement surface. In this study, fly ash (FA), granulated blast furnace slag (GBFS) and carbon fibers were used to prepare carbon fiber-reinforced FA-GBFS geopolymer composite (CFFGC). Then, the modification mechanism of carbon fibers on the electrothermal and mechanical properties of CFFGC was studied, in which important effects arising from the geopolymerization process within CFFGC were focused on. Results show that the gullies on carbon fiber surface can provide nucleation sites for the geopolymerization and calcium silicate hydration reaction in CFFGC, which accelerates the precipitation of reactive Si(OH) 4 and [Al(OH) 4 ] - in the raw materials and promotes the generation of geopolymer gels and C S H gels, thus enhancing the mechanical performance of CFFGC. In addition, when the carbon fiber dosage reaches 0.4 wt%, a substantial conductive network is formed inside CFFGC, which shortens the conductive path and greatly improves the charge transfer capability in CFFGC. Once the carbon fiber dosage exceeds 0.4 wt%, the agglomerated carbon fibers within CFFGC can intensify the phonon scattering, thus reducing its thermal conductivity.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xianhong Zheng,Jinhao Tang,Lvzhu Cheng,Haiwei Yang,Lihua Zou,Changlong Li
The development of high-performance electromagnetic interference (EMI) shielding materials is urgently needed to mitigate electromagnetic radiation pollution. Two-dimensional transition metal carbides (MXenes) are promising EMI shielding materials because of their high metallic electrical conductivity . However, tuning the EMI shielding performance of MXene composites remains challenging via the structure engineering strategy. Herein, we develop a layer-by-layer assembling strategy to construct multilayer sandwiched hollow magnetic Fe 3 O 4 nanospheres (HFO)/MXene on flexible nonwoven fabrics . The fabricated Fe 3 O 4 /MXene composite fabrics (HFMs) exhibit low sheet resistance (4.6 Ω/□), super-hydrophobicity, self-cleaning, and good EMI shielding performance (EMI shielding effectiveness of 33.28 dB). More importantly, the EMI shielding mechanism of HFMs is tunable according to the loaded active materials. Thus, the mechanism can alternate from absorption to reflection. Moreover, the HFMs exhibit good electrothermal performance and can be used as a wearable heater for personal thermal management. This work provides a new approach for the structural design of high EMI shielding materials, and paves the way for the development of wearable electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yucheng Tian,Yixiao Chen,Sai Wang,Xianfeng Wang,Jianyong Yu,Shichao Zhang,Bin Ding
Maintaining body temperature within safe and comfortable range is crucial; however, thermoregulatory materials face challenges in variable environments and extreme application scenarios. Here, a unique dual air-gelation strategy is developed to synthesize carbon aerogel nanofiber metafabric for energy-harvesting thermoregulation. By manipulating polyacrylonitrile/water interaction and charge density of the solution, phase separation and Coulombic repulsion in electrospun jets are promoted, forming curly nanofibers with internal nanopores (size 30–60 nm) that entangle to create nanofibrous dual-aerogel structure; the carbon aerogel nanofiber metafabric is obtained following pre-oxidation and optimized graphitization. The resulting metafabric exhibits high elasticity, robust temperature resistance from −196 to 600 °C, exceptional thermal insulation performance, high-efficiency electrothermal capability (adjustable from 15 to 150 °C), and photothermal property (radiation raised temperature by 22 °C). This work provides rich possibilities to develop advanced carbon nanomaterials for thermal management.
研究领域:
材料科学
·
能源工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yexiong Huang,Tingyu Liu,Zikai Bao,Chunxin Hao,Xin Tang,Shuaiqi Li,Mingyu Pi,Jie Yang,Dingke Zhang
Flexible electrical heaters have drawn significant attention in the field of wearable electronics. A large number of studies have concentrated on improving their electrothermal performance with high heating temperatures, fast temperature response, and good thermal stability. However, the strategy of elemental modification on the electrothermal properties has rarely been explored. In this paper, the electrothermal properties of the modified laser-induced graphene (LIG) fabricated by a facile two-step process are investigated for its application as flexible electrical heaters. NOMEX polyimide composite paper is proposed as a substrate to fabricate LIG via a simple laser-writing method. Doped atoms are introduced by an eco-friendly approach of laser engraving the sodium lignosulfonate coated on the substrate. The modified LIG-based heater exhibits excellent electrothermal performance. It reaches a high steady-state temperature of 160.2 °C under a low operating voltage of 5 V, mainly due to a significantly decreased electrical resistance. Moreover, the fabricated LIG-based heater shows outstanding heating stability, ensuring reliability in practical applications. This research offers a green and low-cost approach for preparing high-performance flexible electrical heaters.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）