SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2020
·
IF 6.984
Peiyu Tan,Feifei Lu,Yuge Han
A new type of device with adjustable reflective capabilities in the mid-IR is elaborated from the combination of Poly (3,4-ethylenedioxythiophene)/Poly (styrenesulfonate) (PEDOT/PSS), gold-coated non-porous polyimide substrate and gel electrolyte. Prior to device characterization, the influence of polymer thickness and gold substrate types on reflectance modulation of PEDOT-Au films is scrutinized to obtain the film with optimum quality. A combination of SEM images and reflectance curves confirms that adopting thin PEDOT/PSS on the non-porous substrate can achieve large amplitude reflectance regulation. Further, a mechanical perforating method is developed to address the issue that ions cannot transport between the polymer film and the counter electrode when this PEDOT/non-porous film assembled into device. An in-depth study shows that by varying the punching side, porosity and aperture, a device with front holes of porosity 12.77% affords the highest reflectance contrast of 0.566 over the wavelength range of 3-5 μm, meanwhile exhibits effective temperature changes of approximately 16 °C. These results inspire interesting perspectives regarding the fabrication of PEDOT-based devices with controllable IR electroreflective performance.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2016
·Vol. 18
·期 12
·1-9
·
IF 2.101
Song Haijun,Cai Kefeng,Shen Shirley
Firstly, tellurium (Te) nanorods with a high Seebeck coefficient have been integrated into a conducting polymer PEDOT/PSS to form PEDOT/PSS/Te composite films. The Seebeck coefficient of the PEDOT/PSS/Te (90 wt.%) composite films is ~191 μV/K, which is about 13 times greater than that of pristine PEDOT/PSS. Then, H 2 SO 4 treatment has been used to further tune the thermoelectric properties of the composite films by adjusting the doping level and increasing the carrier concentration. After the acid treatment, the electrical conductivity of the composite films has increased from 0.22 to 1613 S/cm due to the removal of insulating PSS and the structural rearrangement of PEDOT. An optimized power factor of 42.1 μW/mK 2 has been obtained at room temperature for a PEDOT/PSS/Te (80 wt.%) sample, which is about ten times larger than that of the untreated PEDOT/PSS/Te composite film.
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
Coatings
·
2024
·Vol. 15
·期 1
·14
·
IF 2.9
Congcong Li,Haifeng Bian,Yongkang Wang,Xiao Liu,Linyan Su,Wenhao Bu,Yunfei Wang,Beibei Yang,Duan Bin,Peng Zhu,Hongbin Lu
Stainless steel (SS) is highly susceptible to corrosion in acidic environments, which significantly limits its applicability in such conditions. In this paper, a poly(3,4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT-PSS)/waterborne acrylic resin (AR) composite coating was designed and prepared for enhancing the corrosion resistance of 304SS. Corrosion current density (jcorr) of the PEDOT-PSS/AR-coated 304SS at the simulated PEMFCs’ operating temperature (80 °C) is only 0.86 μA·cm−2which achieves the 2025 DOE goal (jcorr< 1 μA·cm−2). The improved corrosion resistance would be attributed to both the anode protection and barrier effect provided by the PEDOT-PSS/AR coating. Moreover, the 304SS coated by the PEDOT-PSS/AR obtains a lower interfacial contact resistance (ICR) of 37.01 mΩ·cm2at 1.4 MPa than that coated by the pure AR coating with the ICR of 167.95 mΩ·cm2. This eco-friendly, conducting, and anti-corrosive PEDOT-PSS/AR coating offers a new insight into high-performance applications for SS.
研究领域:
材料科学
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电化学
·
防腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Chuanyun Zhao,Chenyang Zhang,Peng Wang,Ziwei Chen,Yuhang Wang,Jiadeng Zhu,Chunxia Gao,Qiang Gao
Wet-spinning technology plays an essential role in the development of wearable electronics. Poly(3,4-ethylene dioxythiophene): poly(styrene sulfonate) (PEDOT: PSS) fibers have been widely investigated in this field due to their advantages of being environment-friendly and low-cost. They are mainly wet-spun from a coagulation bath containing ethanol and water with additional metal salts. However, the conductivity of PEDOT: PSS fibers spun by this method is low. Here, we propose a novel coagulation bath made of ionic liquid (IL), ethanol, and water, and the resultant PEDOT: PSS fibers could achieve a conductivity of 118.3 S·cm −1 . Furthermore, the fiber-shaped supercapacitor prepared by such PEDOT: PSS/IL fibers reveals an optimal capacitance retention rate of 97 % even after 10,000 cycles, and the capacitance loss of the supercapacitor is only 7 % at −20 ℃. The sensor derived from the PEDOT: PSS/IL fibers has superb sensing capability, indicating their promising applications for wearable electronics.
研究领域:
材料科学
·
电子工程
·
可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Bo Yang,Kexin Huang,Shenglan Hu,Ruixiang Wang,Youjun Fan,Jiuhui Qi,Chuyan Rong,Jianqiang Zeng,Wei Chen
Direct methanol fuel cell (DMFC) with near-zero pollution emission, large energy density , and low operating temperature provides a beneficial and sustainable way for alleviating fossil energy crisis and ecological pollution issues. In this work, a systematic protocol was explored for the design of novel electrocatalyst based on PEDOT-PSS coated amino-functionalized SiO 2 microspheres (SiO 2 –NH 2 @PEDOT-PSS) support, and then Pt nano-particles (NPs) were uniformly anchored for the anodic process of DMFCs. Characterization techniques, e.g. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed that the dispersity and homogeneity of Pt NPs on the surface of SiO 2 –NH 2 @PEDOT-PSS were markedly improved due to PEDOT-PSS modification, and the distribution of Pt NPs was in a smaller mean-size ~2.8 nm. Subsequently, X-ray photoelectron spectroscopy (XPS) study exposed fast electron shift phenomenon from SiO 2 –NH 2 @PEDOT-PSS support to Pt NPs in the catalyst. The various electrochemical tests such as cyclic voltammetry (CV), chronoamperometry (CA) and impedance spectroscopy (EIS) revealed that the prepared Pt/SiO 2 –NH 2 @PEDOT-PSS catalyst presented higher electrocatalytic efficacy, excellent durability with improved CO-tolerance towards methanol oxidation reaction rather than commercial Pt/C catalyst. These distinctive physical and chemical features of designed catalyst raise the spirit to design an efficient electrocatalyst based on Pt/SiO 2 –NH 2 @PEDOT-PSS in DMFC applications.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 3
·1-15
·
IF 2.8
Jiang Xiangqian,Chen Weiping,Li Ling,Gao Peng,Ban Chuncheng,Hao Jiandong,Shi Ningqiang
Boron Nitride Aerogels/PEDOT: PSS composite film with good thermoelectric properties were prepared by a simple preparation process. Boron nitride aerogels with a width of less than 1 μm and thickness of approximately 15 nm were prepared by a combination of freeze-drying and high-temperature tubular furnace heating. Then, boron nitride aerogels material was impregnated in a certain amount of 3, 4-ethylenedioxythiophene monomer polymer: polystyrene sulfonate (PEDOT: PSS) solution by ultrasonic vibration and magnetic stirring to produce a composite film. The output voltage of the flexible Boron Nitride Aerogels/PEDOT: PSS/Au piezoelectric sensor increases with an increase in the bending angle. When the bending angle is greater than 90°, the output voltage reaches 4.03 V. For the sake of broaden the application prospect of nanocomposite films, flexible wearable thermoelectric devices were prepared. Using the human body as a heat source, the output voltage of flexible thin-film thermoelectric devices can reach 233.6 mV. According to the formula calculation, the Seebeck coefficient is 18.54 mV/K and the thermoelectric power factor is 28.86 μW/mK 2 . With improvements in the energy collection capacity of wearable energy devices, we believe that more work will be done in the future to realize the coordinated development of functionality, comfort and health on the basis of improving energy conversion efficiency.
研究领域:
材料科学
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纳米技术
·
能量转换
·
传感器与执行器
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Qiao Fan,Kai Zhang,Shigui Peng,Yufei Liu,Lanlan Wei,Shuhao Qin,Min He,Jialin Guo,Tingting Luo,Jie Yu
Poly(3,4-ethylenedioxythiophene) (PEDOT): poly (styrene sulfonic acid) (PSS) is a promising intrinsically conductive polymer. Researchers have been modifying PSS to enhance the conductivity of PEDOT: PSS films, however, the relationship between PSS molecular weight and PEDOT: PSS conductivity remains unclear. Herein, the conductivity mechanism is discussed in detail, and it is observed that, as the molecular weight of PSS increases, the conductivity initially increases but then decreases after reaching a peak. This behavior can be attributed to the different aggregation state structures, the degree of oxidation , and the molecular conformation of PEDOT. Specifically, the optimal PSS molecular weight leads to an increase in PEDOT crystallinity and the appearance of a continuous nanoproto-fiber morphology. Additionally, the highest degree of PEDOT oxidation and the largest molecular weight of PEDOT polymerized after reduction treatment, along with the transition from coiled-coil conformation to linear or swollen coils, synergistically increase the carrier mobility and carrier concentration, resulting in a significant improvement in electrical conductivity . However, further increase in PSS molecular weight leads to decreased crystallinity, reduced continuous crystal domains, lower PEDOT oxidation levels, and molecular weights, preventing the generation of effective charge pathways. The electrical conductivity mechanism reported here provides theoretical models and specific strategies for improving the electrical conductivity of thermoelectric , electromagnetic shielding, and bioelectronic materials.
研究领域:
材料科学
·
电子工程
·
生物电子学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 43
·18345-18352
·
IF 0
Han Li,Minqiang Sun,Tao Zhang,Yuqian Fang,Gengchao Wang
A novel PEDOT-PSS coated sulfur@activated porous graphene composite (PEDOT/S@aPG) is prepared by the impregnation of sulfur with aPG and encapsulation with PEDOT-PSS as the cathode material for lithium–sulfur batteries. The abundant nanopores and large surface area of aPG can provide an intimate contact and strong interaction with S species. Furthermore, the conductive PEDOT-PSS layer can facilitate the charge transportation and prevent the dissolution of polysulfides. As a result, the as-prepared PEDOT/S@aPG composite cathode with a sulfur content of about 60.1% shows a higher specific discharge capacity (1198 mA h g−1 at 0.1 C) in the first cycle and good cycling stability, retaining a reversible capacity of 845 mA h g−1 after 200 cycles. Moreover, the PEDOT/S@aPG cathode also exhibits excellent rate capability, showing a high reversible capacity of 718 mA h g−1 at 2 C.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
✓ 已验证
DOI
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 6
·1-12
·
IF 5.3
Zhao Zexu,Hou Yang,Zhang Hao,Guo Jiahao,Wang Jinyi
Rapid and accurate in situ determination of dopamine is of great significance in the study of neurological diseases. In this work, poly (3,4-ethylenedioxythiophene): poly (styrenesulfonic acid) (PEDOT: PSS)/graphene oxide (GO) fibers were fabricated by an effective method based on microfluidic wet spinning technology. The composite microfibers with stratified and dense arrangement were continuously prepared by injecting PEDOT: PSS and GO dispersion solutions into a microfluidic chip. PEDOT: PSS/GO fiber microelectrodes with high electrochemical activity and enhanced electrochemical oxidation activity of dopamine were constructed by controlling the structure composition of the microfibers with varying flow rate. The fabricated fiber microelectrode had a low detection limit (4.56 nM) and wide detection range (0.01–8.0 µM) for dopamine detection with excellent stability, repeatability, and reproducibility. In addition, the PEDOT: PSS/GO fiber microelectrode prepared was successfully used for the detection of dopamine in human serum and PC12 cells. The strategy for the fabrication of multi-component fiber microelectrodes is a new and effective approach for monitoring the intercellular neurotransmitter dopamine and has high potential as an implantable neural microelectrode. Graphical abstract
研究领域:
生物医学工程
·
神经科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 117
·96862-96869
·
IF 3.84
Zhijie Gong,Qixing Wu,Fang Wang,Xu Li,Xianping Fan,Hui Yang,Zhongkuan Luo
Increasing the sulfur loading in the cathode of a lithium–sulfur battery is an important way to improve its capacity for practical applications. To achieve this, the present work proposes using PEDOT-PSS to encapsulate sulfur/carbon black (S/BP) by a facile solution mixing method and the formed composite is then coated on a porous carbon paper. It is believed that the formation of a core/shell structure in the PEDOT@S/BP composite can promote the electron transport and effectively impede the diffusion of polysulfides, and the porous carbon paper is able to retain the electrolyte containing the dissolved polysulfides in the cathode and alleviate the adverse effect of sulfur volumetric expansion. Due to such advantages, the proposed cathode, with a high sulfur loading of 3 mg cm−2, can yield a high reversible capacity of 1041 mA h g−1 and an excellent cycle stability with a capacity retention of 868 mA h g−1 after 100 cycles and an average coulombic efficiency of 99.4%.
研究领域:
电化学
·
能源材料
·
纳米复合材料
·
电池技术
·
功能高分子材料
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Jingyun Zhao,Zexu Chi,Heng Dong,Changfu Sun,Han Yu,Hongbing Yu
This study explored the depth treatment of desphenly chloridazon (DPC) wastewater by a novel synergetic dual-electrodes electrocatalytic (SDEs) system which consisted of Ni–Sb–SnO 2 /Ti anode (NSSTA) and PEDOT/PSS-CNTs modified activated carbon air diffusion cathode (PP-CNTs AC ADC). NSSTA exhibited an enhanced capability to produce reactive oxygen species (·OH and O 3 ), its O 3 production increased to 6.54 mg/L. PP-CNTs AC ADC was observed to have improved activity of catalyzing oxygen reduction reaction (ORR) with 648.23 mg/L H 2 O 2 generated. Owing to the synergetic effect of O 3 and H 2 O 2 , additional ·OH was obtained in SDEs system through the electro-peroxone reaction. Compared with the single-electrode electrocatalytic (SE) systems, the SDEs system showed superior pesticide degradation performance , higher mineralization current efficiency (MCE) and lower energy consumption (EC). In the SDEs system, the optimal 91.7% of DPC removal efficiency and 90.7% of DPC mineralization efficiency were obtained within 150 min by electrocatalytic oxidation of 17.5 ppm and 25 ppm pesticide wastewater at the current density of 11.94 mA/cm 2 , respectively. The treated water showed reduced acute toxicity than that of the raw wastewater, which suggested that the SDEs system is a promising technology for depth treatment of the pesticide industry effluent with simultaneous decontamination and detoxification realized.
研究领域:
环境工程
·
水处理
·
电化学
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Zhiyu Wang,Jianli Cheng,Wei Ni,Lizhen Gao,Dan Yang,Joselito M. Razal,Bin Wang
A novel free-standing composite film electrode for Li-S battery is investigated. This novel electrode consists of polyvinylpyrrolidone-coated hollow sulfur microspheres (PVPS) that are homogeneously confined within the conductive composite matrix of graphene and poly(3,4-ethylene-dioxythiophene)-poly(styrenesulfonate) (PEDOT-PSS). The characteristic large surface area and wrinkled surface of graphene sheets allow the formation of a conductive layer on the surface of PVPS to suppress the polysulfide dissolution and accommodate the volumetric expansion of sulfur. The addition of PEDOT-PSS also enhances the adhesion between the PVPS and the graphene surface, the overall conductivity of the electrode, and the charge transportation during the charging and discharging processes. The best electrode performances are achieved for a composite film cathode with a sulfur content of about 63.9%, which delivers an initial specific capacity of around 1060 mAh g −1 at 0.1 C. This electrode also displays an excellent capacity retention of 75% after 500 cycles at 1C, corresponding to a capacity decay of only 0.05% per cycle.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）