Materials
·
2024
·Vol. 17
·期 9
·2144
·
IF 3.1
Haiwei Hu,Yanyan Guo,Jiang Zhao
Flexible electronic products, with their characteristics of flexibility and wearability, have attracted significant attention and have become an important direction in the research and development of the electronics industry. Planar micro-supercapacitors (MSCs) with flexible composite electrodes can provide reliable energy support for these products, propelling their further development. The research employed a quick, effective, and environmentally friendly method of laser scribing to create shape-controllable flexible composite electrodes on composite films of Poly(3,4-ethylenedioxythiophene) and graphene oxide (PEDOT/GO), which were subsequently assembled into MSCs. An analysis of the composite electrode morphology, structure, and elemental distribution was conducted through the utilization of SEM, TEM, and XPS techniques. Following this, a comprehensive evaluation of the electrochemical performance of the flexible MSCs was carried out, which included cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and assessment of cyclic stability. The analysis of the CV results indicated that the MSCs achieved the areal capacitance of 5.78 mF/cm2at 5 mV/s. After 5000 cycles at a current density of 0.05 mA/cm2, the capacitance retention rate was 85.4%. The high areal capacitance and strong cycle stability of MSCs highlight the potential of PEDOT/reduced graphene oxide (PEDOT/rGO) electrodes in electrode applications.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2023
·
IF 4.3
He Zhen-Hang,Liu Guang-Feng,Zhou Ze-Kun,Liu Zhen,Zeng Yi-Shu,Zhang Peng
Poly(3,4-ethylenedioxythiophene) (PEDOT) is one of the most successful conductive polymers that recently has been used in wearable sensors for human health monitoring. In this work, we prepared a series of PEDOT hybrids consisting of PEDOT, sodium poly(styrene sulfonate) (PSSNa) and polyethylene oxide (PEO), and their preparation could be scaled-up via an adapted solid-state polymerization process. The resistance of the as-prepared PEDOT:PSS/PEO hybrid shows clear temperature response, i.e. , it decreases almost linearly with the temperature increase. To understand this phenomenon, the in situ synchrotron radiation wide- and small-angle X-ray scattering (WAXS/SAXS) characterizations were undertaken to study the temperature-dependent microstructure change of the PEDOT:PSS/PEO hybrid. It demonstrated that PEDOT formed conductive paths in the hybrids, which were not destroyed by the PEO crystallization. As temperature increased, the PEO crystals’ melting and the accompanying reorganization of PEDOT chains endowed the hybrid sample temperature responsiveness. Based on these fundamental knowledges, the hybrid materials were used to fabricate flexible wearable sensor that showing temperature sensing performance with an accuracy of 1 °C. These findings shed lights on the scalable manufacturing of wearable sensors for body temperature monitoring.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2020
·
IF 3.286
Wei Wang,Di Xu,Aibin Huang,Huihui Yuan,Junjie Xie,Xinyu Chen,Yunlong He,Tao Zhang,Hujiang Shen
PEDOT films were fabricated by vapor-phase polymerization (VPP) with different inhibitor contents in oxidant-containing solutions, and were characterized by X-ray diffraction, Raman spectroscopy, UV/vis transmittance spectra, atomic force microscopy, electrical conductivity and electrochromic measurements. The imidazole which serves as an inhibitor plays key roles on the polymerization reaction, and varying its content results in drastically different properties of the PEDOT films. In the imidazole/Fe(III) p -toluenesulfonate (Im/Fe) weight ratio range of 0∼0.25, the rate of polymerization can be significantly slowed down by increasing the Im/Fe ratio. The optimum Im/Fe ratio of 0.1 and polymerization time of 3 h results in PEDOT films with the highest conductivity on glass substrate (626 S/cm). Higher doping level is found in PEDOT films fabricated with the Im/Fe ratio above 0.1, causing low conductivity due to their loose morphology. The electrochromic properties of the films can be enhanced by prolonging the polymerization time to 3 h. It is found that the transmittance difference at 550 nm is above 10 % in PEDOT films fabricated with 3 h of polymerization. An electrochromic device is assembled and its coloring time is less than 3 s.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 18
·期 7
·5129-5138
·
IF 4.493
Shouli Ming,Zilan Feng,Daize Mo,Zhipeng Wang,Kaiwen Lin,Baoyang Lu,Jingkun Xu
A new nitrogen analog of 3,4-ethylenedioxythiophene (EDOT), N-methyl-3,4-dihydrothieno[3,4-b][1,4]oxazine (MDTO), was electropolymerized in different solvents (deionized water, acetonitrile, and propylene carbonate) using LiClO4 as the electrolyte. The structure and performance of as-prepared PMDTO polymers were systematically studied by cyclic voltammetry, UV-vis spectroscopy, FT-IR, SEM, thermogravimetry, spectroelectrochemistry and electrochromic techniques. To our surprise, solvents had a major influence on the electropolymerization of MDTO and properties of the resultant polymers, including morphology, electrochemistry, electronic and optical properties, and electrochromics, etc. In aqueous solution, MDTO revealed the lowest onset oxidation potential (0.19 V) than in acetonitrile (0.48 V) and propylene carbonate (0.49 V). However, PMDTO films showed rather poor cycling stability in water, while outstanding stability in acetonitrile and propylene carbonate. Films prepared in propylene carbonate displayed a rather smooth morphology, lower band gap (1.65 eV), higher transparency (97.3%) and a contrast ratio (44.6%) at λ = 466 nm. PMDTO films obtained in acetonitrile showed significantly higher coloration efficiency (169.5 cm2 C−1) than in other two solvents (∼97.6 cm2 C−1) with a moderate contrast ratio (24.5%).
研究领域:
材料科学
·
电化学
·
高分子化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Pengyi Tang,Lijuan Han,Li Zhang
A facile and low-cost method is presented to synthesize graphite/PEDOT/MnO2 composites with controlled network structures on commercial supercapacitor separator (CSS) membranes for high-performance supercapacitors, in which pencil lead and a cellulose-based commercial supercapacitor separator membrane were applied as the graphite source and the flexible substrate, respectively. The dependence of PEDOT and MnO2 loading on the structural formation, the electrochemical performance of the hybrid electrode, and the formation mechanism of MnO2 nanowires are systematically investigated. The optimized electrode possesses a high areal capacitance of 316.4 mF/cm2 at a scan rate of 10 mV/s and specific capacitance of 195.7 F/g at 0.5 A/g. The asymmetric supercapacitor device assembled using optimized CSS/Graphite/PEDOT/MnO2 electrode and activated carbon electrode exhibits a high energy density of 31.4 Wh/kg at a power density of 90 W/kg and maintains 1 Wh/kg at 4500 W/kg. After 2000 cycles, the device retains 81.1% of initial specific capacitance, and can drive a mini DC-motor for ca. 10 s. The enhanced capability of the CSS-based graphite/PEDOT/MnO2 network electrode has high potential for low-cost, high-performance, and flexible supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Danfeng Sun,Hongji Li,Mingji Li,Cuiping Li,Hongli Dai,Dazhi Sun,Baohe Yang
A novel NiO/carbon nanotube (CNT)/poly(3,4-ethylenedioxythiophene) (PEDOT) composite with a coaxial tubular nanostructure was successfully deposited on a glassy carbon electrode (GCE) through electrochemical processes. The outer PEDOT matrix has a high affinity for biomolecules, while the CNT inner layer has a strong electron-transport capacity. Hence, the NiO/CNT/PEDOT/GCE was used for the simultaneous determination of dopamine (DA), serotonin (5-HT), and tryptophan (Trp). Electrochemical responses of the NiO/CNT/PEDOT/GCE sensor were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. Three well-separated oxidation peaks were observed in a mixed system containing DA, 5-HT, and Trp; the 5-HT–DA and Trp–5-HT potential separations were 160 and 324 mV, respectively, owing to the synergistic effect of NiO, CNT, and PEDOT. Linear responses were obtained for DA, 5-HT, and Trp in the 0.03–20, 0.3–35, and 1–41 μM concentration ranges, with detection limits of 0.026, 0.063, and 0.210 μM, respectively. In addition, it was possible to simultaneously determine the three analytes using the NiO/CNT/PEDOT composite, which suggests that the sensor has promising applicability.
研究领域:
分析化学
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生物医学工程
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Jia Song,Wenting Li,Kun Song,Chuanli Qin,Xiaoshuang Chen
A common approach to research supercapacitors is to choose a special structure of nanomaterials combined with noble metal oxides to increase capacity. However, using precious metals as electrodes with special nanostructures is both expensive from a commercial point of view and detrimental to the commercialization of supercapacitors. Therefore, we report a system of electrochemical polymerization to prepare a porous polymer nanolayer coated nanomaterial Co(CO 3 ) 0.5 (OH) (CoCHH)/PEDOT electrode with interwoven porous network structure. The PEDOT nanolayer has the advantages of controllable thickness, good electrical conductivity, porous and continuous. In addition, each unit of the special structure can be uniformly coated by nanolayer, and prevent the internal nanostructure from collapsing of the structure as electrolyte ions move in and out, and the conductivity and porosity of the composite electrode can be improved. As a result, the positive electrode of the composite nanolayer system showed excellent stability, with capacitance retention of 92.7% after 2000 cycles.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 67
·35597-35608
·
IF 3.708
Dufen Hu,Baoyang Lu,Xuemin Duan,Jingkun Xu,Long Zhang,Kaixin Zhang,Shimin Zhang,Shijie Zhen
Two amino acid-functionalized poly(3,4-ethylenedioxythiophene) (PEDOT) derivatives, poly(N-(tert-butoxycarbonyl)-L-leucyl(3,4-ethylenedioxythiophene-2′-yl)methylamide) (PEDOT–Boc–Leu) and poly(L-leucyl(3,4-ethylenedioxythiophene-2′-yl)methylamide) (PEDOT–Leu) were synthesized electrochemically via potentiostatic polymerization of corresponding monomers N-(tert-butoxycarbonyl)L-leucyl(3,4-ethylenedioxythiophene-2′-yl)methylamide (EDOT–Boc–Leu) and L-leucyl(3,4-ethylenedioxythiophene-2′-yl)methylamide (EDOT–Leu), which were synthesized by grafting Boc-L-leucine and L-leucine into a 3,4-ethylenedioxythiophene (EDOT) side chain. The electrochemical behaviors, structural characterization, circular dichroism, spectroscopic properties, surface morphology, electrochromic properties and thermal stabilities of PEDOT–Boc–Leu and PEDOT–Leu films were systematically investigated. These L-leucine grafted PEDOT derivatives displayed excellent reversible redox activities, rough and compact surface, and good thermal stability. The circular dichroism spectra suggested the chirality of these polymers. Importantly, the introduction of the L-leucine group enhanced the electrochromic properties of PEDOT and resulted in high contrast ratios (ΔT% = 49% at 600 nm for PEDOT–Boc–Leu) and high coloration efficiencies (431 cm2 C−1 at 960 nm for PEDOT–Leu). Satisfactory results implied that the obtained polymer films can probably be further developed in various applications, such as electrochromic devices, optical displays and chiral recognition.
研究领域:
材料科学
·
电化学
·
光学材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Shiheng Liu,Yizhuo Li,Jie Zhu,Jingyi An,Ruida Zhao,Youlong Xu
The rapid advancement of artificial intelligence (AI) technology is creating new requirements for supply voltage stability and power conversion efficiency, necessitating electrolytic capacitors with conductive polymer cathode films. A study examines how different doping anions, pH levels, and current densities affect the constant-current electropolymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) substrates. Highly doped PEDOT films with smooth surfaces and a conductivity of 313 S cm −1 are obtained at pH 2 and 0.5 mA cm −2 using dodecyl benzene sulfonate (DBS − ) as a doping anion. A PEDOT:PSS conductive substrate is created on the dielectric surface of anodized aluminum foil. Low current density and then high current density electropolymerization of PEDOT cathodes on substrate allow for more efficient capacitors with high capacitance and low leakage current. Based on this, the chip capacitor is obtained with a capacitance of 80 μF cm −2 level, a loss of 0.65 % at 100 Hz, an equivalent series resistance (ESR) of 4.16 mΩ at 100 kHz, and a leakage current of 0.8 μA at 16 V. This work is significant for the research of ultra-low loss and ESR chip aluminum solid electrolytic capacitors.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 22
·7441-7450
·
IF 6.4
Chen Chen,Yueqin Li,Changhao Qian,Lin Han,Zichun Lu,Lingke Liu
Although electrically conductive hydrogels based on conductive polymers hold promise for flexible and high-performance supercapacitors, it is still a challenge for such devices to maintain high capacitance with temperature change, especially under subzero conditions. Herein, conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) decorated with redox-active anthraquinone-2-sulfonic acid sodium (AQS) on the surface is homogeneously dispersed in a poly(acrylic acid) (PAA) hydrogel, which reinforces the conductivity and the stretchability of the obtained AQS–PEDOT/PAA hydrogel electrode. Particularly, with the containing of the H2SO4 + KCl electrolyte, the hydrogel is temperature tolerant and endows the assembled supercapacitor with a wide working temperature of −30 to 90 °C. Due to the extra energy storage contribution of AQS, the device exhibits a high capacitance of 466.5 mF cm−2, a maximum energy density of 41.47 μW h cm−2 and an exceptional cyclic stability of 90% retention after 5000 cycles. Very interestingly, the AQS–PEDOT/PAA electrode shows a remarkable solar-thermal conversion, which significantly boosts the electrochemical performance of the device under subzero conditions. Under solar illumination, the device shows a capacitance enhancement of 39.6% at −30 °C as compared with the device in the dark. This work provides an innovative strategy to spur the sluggish performance of conductive polymer-based hydrogel supercapacitors for practical applications.
研究领域:
材料科学
·
能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Hui Zhang,Dongyu Xu,Bin Zhang,Xiaofan Li,Minli Li,Chen Zhang,Huan Wang,Yuanjin Zhao,Renjie Chai
Advanced artificial nerve conduits offer a promising alternative for nerve injury repair. Current research focuses on improving the therapeutic effectiveness of nerve conduits by optimizing scaffold materials and functional components. In this study, a novel poly(3,4-ethylenedioxythiophene) (PEDOT)-integrated fish swim bladder (FSB) is presented as a conductive nerve conduit with ordered topology and electrical stimulation to promote nerve regeneration. PEDOT nanomaterials and adhesive peptides (IKVAV) are successfully incorporated onto the decellularized FSB substrate through pre-coating with polydopamine. The obtained PEDOT/IKVAV-integrated FSB substrate exhibits outstanding mechanical properties, high electrical conductivity, stability, as well as excellent biocompatibility and bioadhesive properties. In vitro studies confirm that the PEDOT/IKVAV-integrated FSB can effectively facilitate the growth and directional extension of pheochromocytoma 12 cells and dorsal root ganglion neurites. In addition, in vivo experiments demonstrate that the proposed PEDOT/IKVAV-integrated FSB conduit can accelerate defective nerve repair and functional restoration. The findings indicate that the FSB-derived conductive nerve conduits with multiple regenerative inducing signals integration provide a conducive milieu for nerve regeneration, exhibiting great potential for repairing long-segment neural defects.
研究领域:
神经科学
·
组织工程
·
生物材料
·
再生医学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuexin Liu,Tongde Wang,Yuning Sun,Mingcheng Zhang,Guohua Gao,Jinhu Yang,Kefeng Cai
Layered vanadium oxides have recently emerged as ideal cathode materials for aqueous zinc-ion batteries (ZIBs) due to their high theoretical capacity and low cost. However, their inherent shortages of narrow interlayer distance and poor electric conductivity cause sluggish reaction kinetics and low structure stability, leading to battery performance deterioration. Herein, we developed a novel strategy to simultaneously realize the intercalation of conductive polymer into V 2 O 5 polyhedrons and exfoliation of the V 2 O 5 into ultrathin nanosheets. The strategy is realized by in-situ polymerization of 3,4-ethylene-dioxythiophene (EDOT) monomers in the interlayer of the V 2 O 5 polyhedrons that were derived from the annealing of vanadium-based metal–organic frameworks (MIL-100(V)) in air. The MIL-100-derived V 2 O 5 polyhedrons assembled into porous microspheres (PVO) with abundant porosity and small particle size, which facilitates the penetration of EDOT molecules into the interior of the PVO during in-situ intercalation and polymerization processes, ultimately leading to the V 2 O 5 polyhedrons exfoliating into ultrathin nanosheets. The uniform poly(3,4-ethylene-dioxythiophene) (PEDOT) layer and abundant oxygen vacancies in PVO@PEDOT nanosheets can accelerate the diffusion of electrons and zinc ions, which are evidenced by dynamic analysis, ex-situ characterizations, and density functional theory (DFT) calculations, revealing the synergetic effect of PEDOT and oxygen vacancies. Therefore, the PVO@PEDOT cathode exhibits high specific capacity (403.7 mAh g -1 at 0.2 A g -1 ), superior rate capability (312.8 mAh g -1 at 10 A g -1 ), and long-term stability (92.8% of the initial capacity remained after 3000 cycles), which is superior to the majority of ion intercalation improved V 2 O 5 .
研究领域:
材料科学
·
电化学
✓ 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）