Journal of Materials Chemistry A
·
2019
·Vol. 8
·期 2
·554-564
·
IF 10.733
Wenrong Yan,Jinhui Li,Guoping Zhang,Lei Wang,Derek Ho
Microsupercapacitors (MSCs) with excellent flexibility and electrochemical capacitance are promising energy storage devices for wearable electronics. In this paper, we present a 3D porous poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)/graphene composite sponge (PGCS) fabricated via a facile self-assembly process for highly stretchable, high areal capacitance MSCs. The proposed self-assembly process enables simultaneously the following in one-step: (1) separation of PSS and PEDOT from PEDOT:PSS, (2) reduction of graphene oxide (GO) into reduced graphene oxide (rGO), and (3) integration of PEDOT and rGO into a hybrid 3D composite. By tuning the mass ratio of PEDOT:PSS and GO, PGCSs with different porosities, mechanical properties, conductivities, and capacitances can be obtained. With the incorporation of PEDOT into rGO, the PGCS exhibits enhanced electrochemical performance and better mechanical flexibility. The fabricated stretchable MSC exhibits a high areal specific capacitance (19.3 mF cm−2 at a scan rate of 20 mV s−1), good electrochemical stability (88.6% retention of specific capacitance after 5000 cycles), and a remarkable stretchability (87.1% retention of specific capacitance after 50% stretching). This facile approach provides a general strategy for synergistic self-assembly of composite sponges and the design of stretchable 3D MSCs, suitable for energy storage devices with high stretchability and high energy density.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Song Jiangxiao,Yu Yihao,Zhang Yan,Wu Jiahui,Wang Wei,Qi Dongming
The lightweight and adjustable properties of electromagnetic interference (EMI) shielding textiles make them an ideal choice as a layer in firefighting suits designed for complex electromagnetic environments. Enhancing the flame retardant performance of EMI shielding textiles is essential to mitigate rapid combustion risks in extreme conditions, such as high temperatures or fires, thereby reducing fire spread and minimizing damage caused by fire escalation. This study demonstrates the rapid and efficient preparation of flame retardant EMI shielding textiles by employing a spray method to coat cotton fabrics with Poly (3,4-ethylenedioxythiophene)-poly (styrenesulfonate) (PEDOT:PSS) doped with ethylene glycol (EG) and phytic acid (PA). The resulting coating exhibited a shielding effectiveness test (SE T ) value of 46.61 dB, effectively blocking 99.99% of electromagnetic waves (EMWs). Even after undergoing 600 bending cycles, the SE T value could still maintain 42.34 dB. PA not only functions as a dopant to significantly enhance the electrical conductivity of PEDOT:PSS but also confers superior flame retardant properties. In comparison with untreated cotton fabric, the peak heat release rate (pHRR) was reduced from 140.77 to 10.73 kW/m 2 , representing an impressive reduction of 92.37%. The total heat release (THR) decreased from 3.97 to 2.04 MJ/m 2 , marking a substantial decrease of 48.61%. The coated fabric exhibited excellent flame retardant and EMI shielding performance. Furthermore, this innovative material is anticipated to find extensive applications in smart wearables and sensor technologies.
研究领域:
材料科学
·
纺织工程
·
防火材料
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2018
·Vol. 8
·期 1
·1-12
·
IF 4.122
Du Fei-Peng,Cao Nan-Nan,Zhang Yun-Fei,Fu Ping,Wu Yan-Guang,Lin Zhi-Dong,Shi Run,Amini Abbas,Cheng Chun
The typical conductive polymer of PEDOT:PSS has recently attracted intensive attention in thermoelectric conversion because of its low cost and low thermal conductivity as well as high electrical conductivity. However, compared to inorganic counterparts, the relatively poor thermoelectric performance of PEDOT:PSS has greatly limited its development and high-tech applications. Here, we report a dramatic enhancement in the thermoelectric performance of PEDOT:PSS by constructing unique composite films with graphene quantum dots (GQDs). At room temperature, the electrical conductivity and Seebeck coefficient of PEDOT:PSS/GQDs reached to 7172 S/m and 14.6 μV/K, respectively, which are 30.99% and 113.2% higher than those of pristine PEDOT:PSS. As a result, the power factor of the optimized PEDOT:PSS/GQDs composite is 550% higher than that of pristine PEDOT:PSS. These significant improvements are attributed to the ordered alignment of PEDOT chains on the surface of GQDs, originated from the strong interfacial interaction between PEDOT:PSS and GQDs and the separation of PEDOT and PSS phases. This study evidently provides a promising route for PEDOT:PSS applied in high-efficiency thermoelectric conversion.
研究领域:
材料科学
·
能源转换技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Guo-Yu Yang,Shao-Zhe Wang,Hong-Tai Sun,Xu-Ming Yao,Chuan-Bing Li,Yu-Jun Li,Jian-Jun Jiang
MXene aerogels with a porous microstructure are a promising electromagnetic interference (EMI) shielding material due to its low density and excellent electrical conductivity, which has attracted widespread attention. Compared with traditional EMI shielding materials that rely on reflection as the primary mechanism, MXene aerogels with absorption as the dominant mechanism have greater potential for development as a novel EMI shielding material because of its ability to reduce environmental contamination from reflected electromagnetic (EM) waves from materials. In this study, a novel Ti3C2Tx MXene/PEDOT:PSS hybrid aerogel was presented by freeze-drying and thermal annealing using few-layered Ti3C2Tx MXene and the conductive polymer poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). PEDOT:PSS not only improved the gelling ability of Ti3C2Tx but also successfully established a conductive bridge between MXene nanosheets. The experimental results demonstrated that the hybrid aerogel exhibited an obvious porous microstructure, which was beneficial for the multiple scattering of EM waves within the materials. The EMI shielding effectiveness and specific shielding effectiveness reached up to 59 dB and 10,841 dB·cm2·g–1, respectively, while the SER/SET ratio value was only 0.05, indicating superior wave absorption performance. Furthermore, the good impedance matching, due to the electrical conductance loss and polarization loss effect of the composites, plays a critical role in their excellent wave absorption and EMI shielding performance. Therefore, this work provides a practical approach for designing and fabricating lightweight absorption-dominated EMI shielding materials.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Wei Meng,Ru Ge,Zaifang Li,Jinhui Tong,Tiefeng Liu,Qing Zhao,Sixing Xiong,Fangyuan Jiang,Lin Mao,Yinhua Zhou
Highly conductive polymer films on plastic substrates are desirable for the application of flexible electronics. Here, we report the conductivity of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) can be enhanced to 1460 S/cm via phosphoric acid (H3PO4) treatment. The conductivity enhancement is associated with the partial removal of PSS from the film. The H3PO4 treatment is compatible with plastic substrates, while sulfuric acid (H2SO4) can easily damage the plastic substrate. With the flexible electrode of poly(ether sulfone) (PES)/H3PO4-treated PEDOT:PSS, we have demonstrated flexible all-plastic solar cells (PES/H3PO4-treated PEDOT:PSS/PEI/P3HT:ICBA/EG-PEDOT:PSS). The cells exhibit an open-circuit voltage of 0.84 V, a fill factor of 0.60, and a power conversion efficiency of 3.3% under 100 mW/cm2 white light illumination.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2021
·
IF 3.423
Yanchun Hu,Ying Tang,Zuhong Zhang,Feng Yang,Lulu Jiang,Yunjuan Song,Hairui Liu
Inverted Perovskite Solar Cells (PSCs) with Poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT:PSS) as hole transport layer on account of its low-temperature solution processability, good flexibility and good film forming ability. Bis(acetylacetonato)dioxomolybdenum(VI) [CH 3 COCH = (O-)CH 3 ] 2 MoO 2 (BADM) as an effective dopant has been introduced into PEDOT:PSS for planar PSCs. The results show that the power conversion efficiency (PCE) is increased from 14.26% to 17.11% by using BADM to modify PEDOT:PSS, which is mainly due to the increase of filling factor and short circuit current density. Not only that, BADM doping can also improve the extensibility of perovskite film, which can be reflected on flexible substrate, when slightly bending, there are almost no cracks.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Micromachines
·
2025
·Vol. 16
·期 1
·92
·
IF 3
Ying Wang,Qingchao Zhang,Zhidong Zhang
As an innovative branch of electronics, intelligent electronic textiles (e-textiles) have broad prospects in applications such as e-skin, human–computer interaction, and smart homes. However, it is still a challenge to distinguish multiple stimuli in the same e-textile. Herein, we propose a dual-parameter smart e-textile that can detect human pulse and body temperature in real time, with high performance and no signal interference. The doping of SWCNTs in PEDOT:PSS improves the electrical conductivity and Seebeck coefficient of the prepared composites, which results in excellent pressure and temperature-sensing properties of the PEDOT:PSS/SWCNTs/CS@PET-textile (PSCP) sensor. The dual-mode sensor has high sensitivity (32.4 kPa−1), fast response time (~21 ms), and excellent durability (>2000 times) in pressure detection. Concurrently, this sensor maintains a high Seebeck coefficient of 25 μV/K in the 0–120 K temperature range with a tremendous linear relationship. Based on impressive dual-mode sensing characteristics and independent temperature-difference- and pressure-sensing mechanisms, smart e-textile sensors realize the real-time simultaneous monitoring of weak pulse signals and human body temperature, showing great potential in medical healthcare. In addition, the potential energy is excited by the temperature gradient between the human skin and the environment, which provides a novel idea for wearable self-powered devices.
研究领域:
材料科学
·
生物医学工程
·
智能纺织品
✓ 已验证
产品关联
DOI
PubMed
高影响因子
npj Flexible Electronics
·
2022
·Vol. 6
·期 1
·1-8
·
IF 12.019
Li Xin,Zou Ruike,Liu Zhen,Mata Jitendra,Storer Ben,Chen Yu,Qi Weiheng,Zhou Zekun,Zhang Peng
In this work, a polymer and ionic liquid (IL) hybrid with superior thermoelectric performance is prepared via a system design of the chemical composition, molar ratio of the constituent molecules and manipulating the structure in solution and dried films. The solution-casted hybrid film, consisting of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and 1-ethyl-3-methylimidazolium tricyanomethanide (EMIM:TCM), shows the highest power factor of 175 μW m −1 K −2 in the polymer hybrid prepared by a post-treatment-free method. With a set of complementary structure characterization methods, it is found that EMIM:TCM can induce the structure reorganization of PEDOT:PSS in solution from a core-shell model to a rod-like model, during which PEDOT partially separates from PSS that eases the conductive network formation. In addition, the oxidation level of PEDOT:PSS is reduced by adding EMIM:TCM. Based on which, the PEDOT:PSS/IL hybrid shows the best performance in optimizing the conductivity (1163 S cm −1 ) and Seebeck coefficient (38.8 μV K −1 ) simultaneously.
研究领域:
材料科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2024
·Vol. 25
·期 4
·1291-1299
·
IF 2.2
Li Zhilei,Zhou Jianping,Xu Yan,Shang Yukui,Chen Changhua,Ran Tongtong
Effective farmland management requires real-time monitoring of plant growth status and timely response to stressors. To achieve this goal, we utilized wire organic electrochemical transistors (WECTs) to convert ion signals in plant vasculature into electrical signals in circuits, enabling the detection of ion concentrations. In our study, we employed a flexible substrate composed of a core-sheath structure nanofiber yarn impregnated with poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) as a semiconductor channel. The gate was made of silver wire, while silver paste was sprayed at both ends of the core-sheath yarn to serve as a source and drain. This configuration allowed us to construct a wire organic electrochemical transistor that exhibited modulation performance and sensitivity at low voltages, with a transconductance of 1.07 × 10 –4 S. We conducted sodium ion concentration testing and successfully achieved the sensing of sodium ions at concentrations ranging from 10 –4 to 10 –1 M. This study lays the groundwork for the future development of organic electrochemical transistors in plants, enabling in situ detection of sodium ion concentrations under salt stress.
研究领域:
农业科学
·
材料科学
·
植物生理学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Fanjia Zeng,Xu Zhao,Mengying Luo,Wen Wang,Xing Qing,Ying Lu,Weibing Zhong,Qiongzhen Liu,Jie Luo,Mufang Li,Dong Wang
With the rapid development of thermoelectric (TE) generators, the TE device that is transparent, flexible, and can be used for a long time under high humidity and low/high temperature has aroused great interests. In this study, a new hydrophilic substrate of poly (vinyl alcohol-co-ethylene) (PVA-co-PE) nanofiber membrane was used to support the poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and then the PEDOT:PSS/PVA-co-PE composite was encapsulated by epoxy. Due to the size effect of nanofibers, the PVA-co-PE/epoxy composite area shows a good transmittance of 72% at a wavelength of 600 nm, while the area containing the PEDOT:PSS remains black. This kind of transparent packaging structure is more conducive to the application of TE device. Moreover, the special interpenetrating structure and hydrogen bonding between the three phases of PEDOT:PSS, PVA-co-PE NM and epoxy resin greatly enhance the interfacial adhesion of PEDOT:PSS/PVA-co-PE/epoxy composite. The morphology, mechanical properties , transmittance, TE performance, bending resistance and environmental stability of the transparent composite TE device were analyzed. The new composite structure proposed in this research gives the PEDOT:PSS/PVA-co-PE/epoxy TE device outstanding flexibility and environmental stability. The TE performance remains stable after 2000 cycles repeated bending and after placing one end of the TE device in hot steam and ice water. All the results demonstrate the potential application of the transparent composite TE device in the field of flexible electronic device packaging and applications.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 10
·7349-7356
·
IF 2.779
Zhou Xin,Tong Xuan,Li Xiaolong,Min Yonggang,Qian Yannan
To balance the carrier injection, adjusting the thickness of PEDOT:PSS through a simple water diluting was a feasible strategy to improve the efficiency of CsPbBrI 2 perovskite quantum dots light-emitting diode (PeLED). CsPbBrI 2 perovskite quantum dots (PeQDs) with a uniform and monodisperse cubic phase exhibited a red light at 649 nm and with CIE of (0.697, 0.302). Based on PEDOT:PSS film with the thickness of 40 nm, a CsPbBrI 2 PeLED displayed 4.3-fold external quantum efficiency improvement up to 3.44%, and 22.3-fold enhancement in luminance, which was attributed to an effective hole transport and an increased electrical conductivity.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2019
·
IF 6.309
Lirong Liang,Jueshuo Fan,Miaomiao Wang,Guangming Chen,Guoxing Sun
Recently, organic polymer-based thermoelectric (TE) hybrids or composites have received significant attention. Here, a unique layered morphology of polypyrrole/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotube (PPy/PEDOT:PSS/SWCNT) ternary TE composites are designed using 1D nanostruture of PPy as template. The nanowires of PPy/PEDOT:PSS binary composites are obtained via coating PEDOT:PSS on the surfaces of 1D PPy nanowires. Interestingly, the PPy/PEDOT:PSS/SWCNT ternary composites reveal unexpected layered morphology and dramatically-enhanced TE function with an optimal power factor of 45.3 ± 1.4 μW m −1 K −2 at room temperature. This study will enrich the structure design and preparation strategy of novel TE composites by judicious combing 1D polymer nanostructure with 3D layered networks of composites.
研究领域:
材料科学
·
有机电子学
✓ 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）