ACS Applied Materials & Interfaces
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2019
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IF 8.456
Yao Lu,Yufei Ding,Yang Qiu,Kefeng Cai,Qin Yao,Haijun Song,Liang Tong,Jiaqing He,Lidong Chen
Herein, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) coated CuxSey (PC-CuxSey) nanowires are prepared by a wet-chemical method, and PEDOT:PSS/CuxSey nanocomposite films on flexible nylon membrane are fabricated by vacuum assisted filtration and then cold-pressing. XRD analysis reveals that the CuxSey with different compositions can be obtained by adjusting the nominal Cu/Se molar ratios of their sources. For the composite film starting from a Cu/Se nominal molar ratio of 3, an optimized power factor of ∼270.3 μW/mK2 is obtained at 300 K. Moreover, the film exhibits a superior flexibility with 85% of the original power factor retention after bending for 1000 cycles around a rod with a diameter of 5 mm. TEM and STEM observations of the focused ion beam (FIB) prepared sample reveal that it is mainly attributed to a synergetic effect of the nylon membrane and the composite film with nanoporous structure formed by the intertwined nanowires, besides the intrinsic flexibility of nylon. Finally, a thermoelectric prototype composed of nine legs of the optimized hybrid film generates a voltage and a maximum power of 15 mV and 320 nW, respectively, at a temperature gradient of 30 K. This work offers an effective approach for high TE performance inorganic/polymer composite film for flexible TE devices.
研究领域:
材料科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
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2017
·Vol. 55
·期 13
·997-1004
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IF 2.838
Tongzhou Wang,Congcong Liu,Xiaodong Wang,Xia Li,Fengxing Jiang,Changcun Li,Jian Hou,Jingkun Xu
Two-dimensional (2D) WS 2 nanosheets (NSs) as a promising thermoelectric (TE) material have gained great concern recently. The low electrical conductivity significantly limits its further development. Herein, we reported an effective method to enhance the TE performance of WS 2 NSs by combining poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS). The restacked WS 2 NSs thin film with 1T phase structure obtained by a common chemical lithium intercalation show a high Seebeck coefficient of 98 μV K −1 and a poor electrical conductivity of 12.5 S cm −1 . The introduction of PEDOT:PSS with different contents obviously improve the electrical conductivity of WS 2 NSs thin films. Although a declining Seebeck coefficient was observed, an optimized TE power factor of 45.2 μW m −1 k −1 was achieved for WS 2 /PEDOT:PSS composite thin film. Moreover, the as-prepared WS 2 /PEDOT:PSS thin film can be easily peeled off and transferred to other substrate leading to a more promising application. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2017 , 55 , 997–1004
研究领域:
材料科学
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物理学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
·
IF 9.5
Xin Jiang,Junwei Zhou,Xinke Zhong,Zhaopeng Hu,Rongyan Hu,Yihu Song,Qiang Zheng
Electromagnetic interference (EMI) shielding materials with stretchability are important for developing wearable and flexible appliances. Herein, lithium bis(trifloromethanesulfonyl)imide (Li-TFSI)-doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) and carboxylated styrene-butadiene rubber (XSB) latex are used to prepare stretchable EMI shielding composite films of 0.2 mm in thickness. In these films, the doped PEDOT:PSS nanoparticles form tenuous conductive pathways between the hexagonally packed latex particles, resulting in higher EMI shielding efficiency (EMI SE) compared with the films containing traditional dopant ethylene glycol. For the purpose of stretchable EMI shielding, the films containing 6 wt % PEDOT:PSS and 6 wt % Li-TFSI demonstrate EMI SE of 50 and 30 dB (12.4 GHz) at 0 and 100% strains, respectively, being the highest values among the reported shielding composites except for those using liquid metal as the filler. The investigation also provides a simple and environmentally friendly preparation method being highlighted for the development of lightweight stretchable EMI shielding materials for applications in flexible electronics in the near future.
研究领域:
材料科学
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电子工程
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DOI
PubMed
高影响因子
Energy Material Advances
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2024
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IF 14.8
Chan Zhang,Haiming Huang,Shaobo Han,Xi Liu,Lixin Mo,Jing Zhao,Jinpeng Mo,Canyan Che
Recent advances in n-type conducting polymers are beginning to rival those of p-type materials. Notably, the n-type conducting polymer poly(benzodifurandione) (PBFDO) demonstrates a notable Seebeck coefficient along with exceptionally high electrical conductivity, positioning it as a promising n-type thermoelectric material with substantial research potential. Despite its promise, the exploration of PBFDO’s thermoelectric properties and the development of related thermoelectric devices have been limited. In this study, we introduce a flexible thermoelectric device that utilizes a combination of the p-type polymer poly(3,4ethylenedioxythiophene):polystyrene sulfonate and the n-type polymer PBFDO, using a straightforward print-and-fold technique. This approach enabled the production of flexible devices with thermoelectric generators whose properties were assessed. The polymer films and the resultant devices demonstrated commendable performance stability even after being subjected to 1,000 bending cycles at a 90° angle. Our findings corroborate the potential of PBFDO as a viable material for flexible thermoelectric applications, a development that is eagerly anticipated in the field.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
POLYMER
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2022
·
IF 4.432
Zhen Liu,Xin Li,Ruike Zou,Zekun Zhou,Qianyun Ma,Peng Zhang
Solution structure and its relationship with the solid-state structure of poly(3,4-ethylenedioxythiophene): poly(4-styrenesulfonic acid) (PEDOT:PSS) determined the materials' conductivity and thus devices’ performance. In this work, we deciphered the multi-level structure of PEDOT:PSS with a set of sophisticated and complementary structural characterization techniques consisting of small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS). SAXS and SANS results disclosed that the PEDOT:PSS formed a conductive network in the aqueous dispersion, which was ascribed to a quaternary structure . Secondary doping with lithium bis(trifluoromethanesulfonyl)imide salt significantly changed the quaternary structure of PEDOT:PSS and thus enhanced the film conductivity. In addition, we studied in situ the change of quaternary structure and the sample resistance during solvent evaporation with SAXS and resistance measurements, respectively, which provided detailed and fundamental knowledge about the structure-property correlations. This fundamental knowledge would guide the design and preparation of advanced flexible electronics.
研究领域:
材料科学
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物理化学
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DOI
高影响因子
ACS Applied Polymer Materials
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2022
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IF 4.855
Juncai Song,Yuan Wei,Manzhang Xu,Jiuwei Gao,Lei Luo,Hao Wu,Xingji Li,Yue Li,Xuewen Wang
This work proposes a design, fabrication, and characterization of flexible temperature sensors using temperature-sensitive materials, which are applied using a drop coating method. Temperature-sensitive materials were fabricated by mixing poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) with polyaniline (PEDOT:PSS/PANI). The temperature coefficient of resistance reached −0.803%/°C. Moreover, the detection resolution reached 0.1 °C and had a fast response time of 200 ms. In addition, the sensor can sense spatial temperatures. The sensor has the advantages of low cost, a simple preparation process, and the potential to be used in medical rehabilitation and early disease prevention.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
Journal of Materials Chemistry C
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2023
·Vol. 11
·期 39
·13358-13369
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IF 6.4
Jing Chen,Jiadeng Zhu,Zhongrui Wei,Ziwei Chen,Chunhong Zhu,Qiang Gao,Chunxia Gao
Wearable electronics have emerged as a promising research field, generating considerable interest in exploring the high stretchability and electrical sensitivity of flexible conducting materials. This work proposes a novel, eco-friendly technique to continuously produce self-helical conductive PEDOT:PSS fibers. The resultant fibers reveal a high breaking tensile elongation (>950%), superior electrical conductivity (650 S cm−1), and remarkable elasticity even when deformed by up to 400%. The morphology and performance of self-helical fibers can be optimized by tuning the metal salt concentrations in the coagulation bath, spinning speeds, and needle inner diameter. Additionally, finite element software (Ansys) was used to model the fibers under stress. The optimal fibers spun from the coagulation bath made of 20 vol% phosphoric acid aqueous solution with 0.05 M magnesium chloride were selected as a sensing unit. These fibers possess excellent sensitivity and cycle stability over a broad range of operations, making them suitable for accessible human–computer interfaces and next-generation flexible electronics.
研究领域:
材料科学
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柔性电子学
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生物医学工程
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产品关联
DOI
高影响因子
ACS Applied Electronic Materials
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2025
·
IF 4.7
Runqiu Wu,Bendong Liu,Hongye Qin,Dongkun Yu,Jiahui Yang,Haibin Liu,Guohua Gao
The development of flexible wearable devices requires energy supply devices with high flexibility and stretchability. Thermoelectric ionic hydrogels possess characteristics of high flexibility and stretchability and can be used as heat conversion devices to transform low-grade heat energy into electrical energy. Recently, studies of ionic-thermoelectric hydrogels exhibit high thermopower (or Seebeck coefficient), but their raw materials are typically laced with strong alkalis or heavy metals, which makes them highly toxic and limits their potential applications. In order to enhance the thermopower in this study, we employed PEDOT:PSS as an n-type dopant in PAAm hydrogels to induce counterion condensation. This process immobilizes cations, thereby amplifying the ion-thermal migration rate disparity in the Soret effect and enhancing the thermopower. Furthermore, the thermoelectric performance was optimized by adjusting the dosage of the initiator ammonium persulfate (APS). The experimental results showed that the PEDOT:PSS/PAAm-based ionic hydrogel exhibited a high thermopower of −4.45 mV/K when the concentration of APS was 1 wt %. This study provides an approach for the preparation of low-toxicity, high-thermopower n-type thermoelectric ionic hydrogels.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Jingyu Peng,Ting Wang,Rujing Wang,Song Wang,Hanzhuang Zhang,Xulan Xue,Wenyu Ji
Interfaces between functional layers are among the most crucial and intricate structures in electronic devices with a multilayer structure; they determine the injection and distribution of charge carriers, as well as the efficiency and stability of the devices. Here, a general but previously overlooked acidic surface of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films is investigated in detail to construct efficient perovskite light-emitting diodes. This potent acidity leads to the decomposition of perovskites by the diffusion of active protons coming from the PSSH components in PEDOT:PSS. A polyethylenimine ethoxylated (PEIE) modifying layer is used to neutralize the PSSH on the surface of PEDOT:PSS films, which not only protects the perovskites, but also enhances device efficiency greatly. A peak current efficiency of 56.7 cd/A is obtained, enhancing by about 7 times compared with the control device without PEIE (7.8 cd/A). Our work addresses a long-standing but seldom-discussed issue in perovskite light-emitting diodes—the strong dependence of device performance on the surface characteristics of PEDOT:PSS films.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2023
·Vol. 8
·期 21
·2300898
·
IF 6.8
Yuxin Wang,Yang Hong,Xiaokang Hu,Yang Ye,Peike Wang,Jingjing Luo,Ao Yin,Zhongqi Ren,Haipeng Liu,Xue Qi,Jiang Liu,Sisi He,Suzhu Yu,Jun Wei
Long-term effective temperature monitoring using a flexible wearable temperature sensor is critical for future health monitoring, noninvasive clinical biomonitoring, disease diagnosis, and so on. Thermistors have the merits of simple structure, ease of preparation and great sensitivity, but the preparation of thermistors with good flexibility is often at the expense of their sensitivity and requirement of high temperature. Herein, a flexible temperature sensor with stability and high sensitivity by spraying VO 2 /PEDOT:PSS composites on an SBS electrospinning substrate is reported. The sensor exhibits high thermal sensitivity (−2.712%/°C), high precision (85 mK), ultra-fast response time (1 s) and recovery time (2.5 s), enabling accurate real-time temperature detection and meeting the need for long-term temperature monitoring and tracking. As a proof of concept, this sensor is applied to monitor human skin temperature, breathing rate, and temperature recognition, and as a temperature-based input keyboard, demonstrating its tremendous potential to further develop personalized flexible sensors.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
Advanced Sustainable Systems
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2025
·
IF 6.1
Dongdong Li,Jiajie Cui,Congcong An,Qingyi Liu,Jun Xu,Xuan Han,Shengchen Yang,Wen-Yong Lai
Conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS) has garnered extensive research interest as the electrode material for supercapacitors due to its excellent conductivity and high specific capacitance. However, the dense stacking of PEDOT:PSS leads to a low utilization for high areal capacitance, due to the limited amounts of active sites exposure to electrolytes. In this study, Ag particles are first incorporated into PEDOT:PSS ink to produce PEDOT:PSS/Ag composite electrode materials, which are then used to construct paper-based flexible supercapacitors via a scalable screen-printing technique. Benefiting from the improved electrical property and surface morphology, the areal capacitance of the supercapacitor based on PEDOT:PSS/Ag composite electrodes is found to be 3.87 times greater than that of the pure PEDOT:PSS electrode. Moreover, the paper-based supercapacitor also exhibits exceptional flexibility, maintaining over 80% of its initial capacitance even after 9000 bending cycles. These findings indicate that PEDOT:PSS/Ag composite electrodes are promising candidates for high-performance flexible supercapacitors, highlighting their potential to supply continuous power for application in future flexible electronics.
研究领域:
材料科学
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能源存储
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 44
·期 3
·780-790
·
IF 3.069
Hui Zhao,Wenming Geng,Wei-Wei Cao,Jian-Gong Wen,Tao Wang,Ying Tian,Li-Chao Jing,Xiao-Tong Yuan,Ze-Ru Zhu,Hong-Zhang Geng
Carbon nanotubes (CNTs) and graphene oxide (GO) were sprayed on flexible polyethylene terephthalate (PET) substrates to prepare CNT and GO–CNT transparent conductive films (TCFs). For the GO–CNT TCFs, when the mass ratio of GO to CNTs was 0.2, a relatively low sheet resistance of 90.4 Ω sq−1 at a transmittance of 87% (550 nm) was obtained with an average σdc/σopt value of 28.9. Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) solution without or with ethylene glycol (EG) added was sprayed on the surface of the GO–CNT films to obtain P/GO–CNT and P(E)/GO–CNT films, respectively. P(E)/GO–CNT films were post-treated with sulfuric acid to obtain P(E,S)/GO–CNT TCFs. The addition of PEDOT:PSS can permeate into the pores of networks and densify the GO–CNT networks, increasing the conductivity and wettability and decreasing the roughness of the films. Additional EG can reduce the Coulomb force between PEDOT and PSS and change the morphology of PEDOT, and at the same time sulfuric acid treatment can effectively remove PSS from the PEDOT:PSS layer. The P(E,S)/GO–CNT 0.2 TCFs exhibited a sheet resistance of 46.3 Ω sq−1 at a transmittance of 87.5% (550 nm) with an average σdc/σopt value of 56.1. The organic light emitting diodes were successfully fabricated, and the mechanism of how the electrical conductivity of the hybrid film increased was also investigated.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
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