NPG Asia Materials
·
2022
·Vol. 14
·期 1
·1-8
·
IF 10.761
Shi Wei,Yao Qin,Donghui Wang,Qu Sanyin,Chen Yanling,Lee Kyu Hyoung,Chen Lidong
Nonferric oxidant precursors have the unique advantage of directly polymerizing poly(3,4-ethylenedioxythiophene) (PEDOT)-inorganic composites. However, due to limited solubility and unmatched oxidation potentials, most oxidants only produce powders or porous materials. To obtain high-quality films with improved homogeneity and controllable particle sizes, the oxidants should be adaptable to high-standard PEDOT film fabrication techniques such as vapor phase polymerization (VPP). In this work, we discovered for the first time a nonferric metal salt suitable for the VPP process. With the addition of an Fe(III) salt to stabilize the reaction and adjust the oxidant ratio, micron-thick antibacterial S-PEDOT-Ag quantum dot (QD) composite films with tunable Ag wt% can be synthesized in one facile step. With a low Ag loading of ~0.2 wt%, the film exhibited an optimized power factor of 63.1 μW/mK 2 , which is among the highest values thus far reported for PEDOT-metal composites. Increase of the Ag(I) concentration in the precursor to a certain level may lead to minor decomposition of the polymer followed by the formation of Ag 2 S particles.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xiaoyan Zhu,Xiying Han,Rui Guo,Peng Yuan,Liqin Dang,Zonghuai Liu,Zhibin Lei
Poly(3,4-ethylenedioxythiophene) (PEDOT) has emerged as one of promising conductive polymers in energy storage devices. However, the conventional solution oxidative polymerization usually produces PEDOT with low conductivity and limited surface area. This work reports the preparation of highly conductive fibrous PEDOT by a vapor-phase polymerization initialized with Fe 2 O 3 nanosheets that are uniformly electrochemically deposited on the N-doped carbon nanofibers (CNFs) film. The incorporation of highly conductive PEDOT nanofibers expands the film and simultaneously increase the film conductivity by 80 times (103 S cm −1 ). Accordingly, an areal capacitance of 1926 mF cm −2 at 5 mA cm −2 with a PEDOT mass loading of 8.68 mg cm −2 has been achieved. Importantly, the fast pseudocapacitive charge storage mechanism afford the CNF-PEDOT a high-rate capability which retains 68% capacitance in 5–50 mA cm −2 . Especially, the CNF-PEDOT film electrode exhibits an outstanding stability with 87% capacitance retention after 10,000 consecutive charging and discharging cycles at 50 mA cm −2 . A CNF-PEDOT-based supercapacitor delivers an energy density of 97 μWh cm −2 at power density of 0.45 mW cm −2 , surpassing state-of-the-art PEDOT-based devices. This work will open a new avenue for preparing highly conductive PEDOT hybrid electrodes towards high-performance supercapacitors.
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高影响因子
JOURNAL OF POLYMER SCIENCE
·
2021
·Vol. 60
·期 5
·794-802
·
IF 0
Jiarui Yu,Nan Gao,Xiaowen Xie,Xing Xin,Zhanqi Li,Shuai Chen,Jingkun Xu
Thermally healing capability of cracks and defects is important and urgent for the safe operation and life extending of electric materials and devices. Here, by the combination of thermally driven reversible Diels–Alder (DA) interaction and in-situ chemical oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT), a series of intrinsically conductive poly(3,4-ethylenedioxythiophene) (PEDOT)/DA composites possess intrinsically self-healing property under low-temperature (reverse DA reaction at 100°C; DA crosslinking at 60°C) stimulus were achieved. The crosslinking DA bonding reactions are multiple from the co-existence of pre-synthesized macromolecular polyurethane attached DA units (PU-DA) and 2,4-hexadiyne-1,6-diol (DADOL) in the films. PU-DA involved in the polymerization process of EDOT to endow PEDOT with outstanding solution-processability, uniform film making, and structural self-healing capability, while DADOL was added to enhance the cross bonding between polymer chains. This work will accelerate the research and application development of intrinsically self-healing conducting polymers for commercial capacitors, antistatic coatings, implantable, printable electronics, and so on. Graphical
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ACS Applied Energy Materials
·
2021
·
IF 6.024
Minzhi Du,Xinyi Chen,Kun Zhang
Ionic liquids (ILs) have been reported to modulate the thermoelectric properties of conducting polymers. However, there is still a lack of comprehensive understanding of the effects of ILs on their thermoelectric transport. Herein, we selected 1-ethyl-3-methylimidazolium dicyanamide (EMIM:DCA) to post-treat free-standing PEDOT nanowire (NW) films and the effects on thermoelectric performance were fully explored. EMIM:DCA post-treatment simultaneously increases the Seebeck coefficient (87% increment) and electrical conductivity (24% increment) of PEDOT NWs, resulting in an optimal power factor of 83.8 μW m–1 K–2 at room temperature. It demonstrates the first ever-reported free-standing IL/polymer composites and outperforms the majority of all IL/polymer composites. Based on experimental characterizations, we elucidate that IL-induced dedoping and the Soret effect synchronously determine the Seebeck coefficient enhancement, where the Soret effect plays a dominant role, accounting for 79.9% for PEDOT NW films with 80 wt % EMIM:DCA. By means of X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and X-ray diffraction (XRD), we further confirm that IL-induced dedoping contributes to phase segregation and compact stacking of PEDOT chains, resulting in lowered carrier concentration for the enhanced Seebeck coefficient and facilitating carrier transport for higher electrical conductivity. More importantly, through Kang–Snyder transport modeling, we first find that the improved transport coefficient (σE0) by IL-induced dedoping also contributes to the Seebeck coefficient enhancement, shedding light on the mechanism that can be adopted to design high-performance thermoelectric materials with conducting polymers.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2012
·
IF 3.898
You Wang,Hui Xu,Xiaoxi Yang,Zhiyuan Luo,Jianming Zhang,Guang Li
An all-solid-state sensor based on screen-printing technique for rapid blood calcium test was studied. The sensor consists of a thick film calcium ion-selective electrode and a pseudo-reference electrode. Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with poly(styrenesulfonate) (PSS) was screen-printed on carbon paste electrodes as internal solid contacts for both the ion-selective and reference electrodes. PVC membranes with and without neutral carrier ETH129 were coated on the PEDOT (PSS) layer to form calcium ion-selective and pseudo-reference electrodes, respectively. The properties of screen-printed PEDOT (PSS) film on carbon paste electrode were studied by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) methods. The response time of the calcium sensors was 15 s while less than 15 μL sample was applied. And the sensitivity was 30.0 ± 1.0 mV per decade, while the potentiometric log selectivity coefficients were −3.80, −3.35 and −4.60 for Na + , K + and Mg 2+ . Other properties of the calcium sensors were evaluated, including the temperature effect, repeatability, reproducibility and stability. The testing results with the calcium sensors were compared with those with a routine hospital electrolyte analyzer. The clinical trial results reveal that the all-solid-state calcium sensor is promising for the point of care testing.
研究领域:
医学检测
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生物传感
·
材料科学
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yingli Wang,Jialong Duan,Yuanyuan Zhao,Benlin He,Zhengbo Jiao,Qunwei Tang
The development of weather-independent photovoltaics is a persistent goal for energy technique. Herein we develop a category of hybridized dye-sensitized solar cells (DSSCs) from cost-effective poly(3,4-ethylenedioxythiophene) (PEDOT) derivate counter electrodes and mesoscopic titanium dioxide/long persistence phosphors ( m -TiO 2 /LPPs) composite photoanodes. Using the solar energy storage and emission performances of LPP phosphors, the final m -TiO 2 /LPPs photoanodes are demonstrated to store unabsorbed incident light and to persistently emit monochromatic light for re-exciting photosensitizers. The optimized photovoltaics yield a maximized power conversion efficiency of 10.07% under simulated sunlight irradiation (100 mW cm −2 , air mass 1.5 global) and durable energy output lasting for hours when ceasing solar illumination. The application of m -TiO 2 /LPP photoanodes in the hybridized DSSCs provides new opportunities of making multi-energy integrated photovoltaics for persistent power generation free of sun illumination.
研究领域:
材料科学
·
能源技术
·
光电化学
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高影响因子
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
·
2015
·Vol. 53
·期 19
·2238-2251
·
IF 3.113
Liqi Dong,Baoyang Lu,Xuemin Duan,Jingkun Xu,Dufen Hu,Kaixin Zhang,Xiaofei Zhu,Hui Sun,Shouli Ming,Zhipeng Wang,Shijie Zhen
Two new 3,4-ethylenedioxythiophene (EDOT) derivatives, (2 R )-(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl 2-phenylpropanoate (( R )-EDTM-PP) and (2 S )-(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl 2-phenylpropanoate (( S )-EDTM-PP), were synthesized and electropolymerized in dichloromethane (CH 2 Cl 2 ) and terabutylammonium hexafluorophosphate (Bu 4 NPF 6 ) system. As chiral electrodes, poly((2 R )-(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl 2-phenylpropanoate) (( R )-PEDTM-PP) and poly((2 S )-(2,3-dihydrothieno[3,4-b][1,4]dioxin-2-yl)methyl 2-phenylpropanoate) (( S )-PEDTM-PP)-modified glassy carbon electrodes (GCEs) were employed to successfully recognize 3,4-dihydroxyphenylalanine (DOPA) enantiomers. Cyclic voltammetry presents that ( R )-PEDTM-PP and ( S )-PEDTM-PP had good redox activity and stability. Spectroelectrochemistry studies revealed ( R )-PEDTM-PP and ( S )-PEDTM-PP polymers have electronic bandgap of 1.68 and 1.66 eV, and could be reversibly oxidized and reduced accompanying with obvious color changes from dark blue to light purple. In addition, the electrochemical behavior, structural characterization, thermal stability, morphology and circular dichroism of ( R )-PEDTM-PP and ( S )-PEDTM-PP films were investigated in detail. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015 , 53 , 2238–2251
研究领域:
材料科学
·
分析化学
·
高分子化学
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高影响因子
RSC Advances
·
2015
·Vol. 6
·期 4
·2778-2784
·
IF 3.84
Yaoming Xiao,Gaoyi Han,Haihan Zhou,Jihuai Wu
A titanium (Ti) foil based perovskite solar cell (PSC) is devised and prepared by employing titanium dioxide nanowire (TNW) arrays and titanium dioxide nanoparticles (TNPs) on Ti foil substrates as the electron transporting layer (ETL). The TNW array is desirable for the PSC, since it can provide direct pathways for the rapid collection and transmission of photo-generated electrons. The Ti foil substrate has many advantages such as flexibility, low sheet resistance, and excellent mechanical stability. The sunlight illuminates through the highly transparent poly(3,4-ethylenedioxythiophene) (PEDOT) film on the indium doped tin oxide/polyethylene naphthalate (ITO/PEN) substrate. The transparent PEDOT electrode can be used as the hole transporting layer (HTL) due to the well matched band positions for charge separation and transport. As a result, the Ti foil based light-weight PSC with TNW arrays yields an efficiency of 13.07% with an active area of 1.00 cm2, which is higher than that of the PSC with TNPs (9.93%). These promising results highlight the potential application of the PEDOT and Ti foil in cost-effective, large-area, and flexible PSCs.
研究领域:
材料科学
·
能源科学
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2024
·
IF 5.8
Chao Li,Zecheng Yang,Jiadeng Zhu,Chunxia Gao,Mingxu Wang,Qiang Gao
Hydrogel is a promising material for wearable electronics due to its good mechanical properties, electrical conductivity and body adaptability. However, subzero freezing and water loss under high temperature or prolonged placement are great challenges for hydrogels. Here, polyacrylic acid / poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PAA/PEDOT: PSS) ionogels were designed by entangling PAA and PEDOT: PSS chains with each other in a binary solvent system of water and ionic liquid (IL) and chemical cross-linking by N, N’ -methylene bisacrylamide (MBA). It has excellent mechanical properties (8.3 kPa, > 500 %), skin-adapted Young's modulus (<10 kPa), high conductivity (8.06 S·m −1 ), and strong adhesion (13.3 kPa). Ionogel has a sensitive response as a sensor (GF = 2.08, 0–200 %; GF = 3.64, 200–400 %; GF = 4.58, 400–510 %). Especially, the freeze-resistance and long-term moisturizing properties make ionogels exhibit long-lasting and robust utility. As a scalable application platform, we demonstrate the potential applications of this novel ionogel as a body-conformable electronic product in a series of conceptual demonstrations, including full range of human motion response, human–machine interaction (HMI), temperature signal detection and TENG device assembly.
研究领域:
材料科学
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生物医学工程
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高影响因子
Advanced Materials Technologies
·
2021
·Vol. 7
·期 1
·2100788
·
IF 7.848
Xiaohui Fang,Shikun Zhao,Zhen Qin,Yuhuan Lv,Kai Pan
Flexible piezoresistive sensors are extensively applied in smart health monitoring systems due to their excellent shape adaptability, portability, and comfortableness. However, constructing piezoresistive sensors with both high sensitivities and wide pressure range remains a huge challenge. In this paper, inspired by the fingerprint structure, a 3D poly (3,4-ethylenedioxythiophene) coated wrinkled nanofiber film based flexible piezoresistive sensor is developed through a simple method. Benefiting from the undulating structure of the conductive nanofiber film, there are abundant micro-ridges on the surface of the rough nanofiber network, which make a significant contribution to the construction of new conductive paths under different pressures. This assembled sensor exhibits an ultra-high sensitivity of 397.54 kPa −1 in a small pressure range (0–3 kPa) as well as an ultra-wide pressure range of 0–25.48 kPa. In addition, it can maintain stable signal output even after 16 500 compression cycles. Furthermore, this high-performance piezoresistive sensor is demonstrated to accurately identify the wrist pulse and joint bending of human body, which enables an extensive application prospect in the field of wearable electronics.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
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高影响因子
Materials
·
2024
·Vol. 17
·期 10
·2469
·
IF 3.1
Haoxiang Tao,Guangyao Hu,Shun Lu,Bing Li,Yongxing Zhang,Jie Ru
Ionic electroactive polymer (iEAP) actuators are recognized as exceptional candidates for artificial muscle development, with significant potential applications in bionic robotics, space exploration, and biomedical fields. Here, we developed a new iEAP actuator utilizing high-purity single-walled carbon nanotubes (SWCNTs)-reinforced poly(3, 4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT: PSS, PP) hybrid electrodes and a Nafion/EMIBF4ion-exchange membrane via a straightforward and efficient spray printing technique. The SWCNT/PP actuator exhibits significantly enhanced electric conductivity (262.9 S/cm) and specific capacitance (22.5 mF/cm2), benefitting from the synergistic effect between SWCNTs and PP. These improvements far surpass those observed in activated carbon aerogel bucky-gel-electrode-based actuators. Furthermore, we evaluated the electroactive behaviors of the SWCNT/PP actuator under alternating square-wave voltages (1–3 V) and frequencies (0.01–100 Hz). The results reveal a substantial bending displacement of 6.44 mm and a high bending strain of 0.61% (at 3 V, 0.1 Hz), along with a long operating stability of up to 10,000 cycles (at 2 V, 1 Hz). This study introduces a straightforward and efficient spray printing technique for the successful preparation of iEAP actuators with superior electrochemical and electromechanical properties as intended, which hold promise as artificial muscles in the field of bionic robotics.
研究领域:
材料科学
·
生物医学工程
·
机器人学
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PubMed
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Yinjie Peng,Changning Hu,Jie He,Zhaowen Yang,Min Zhang
Multifunctional flexible triboelectric nanogenerator (TENG) offer an ideal solution for addressing the energy demands of wearable electronics. However, it remains challenging to develop flexible TENG electrode materials that simultaneously exhibit excellent flexibility and high electrical conductivity. In this work, a tough and highly conductive hydrogel (PAM/LS@PEDOT) was developed by hydrophobically associating polyacrylamide (PAM) chains using sodium dodecyl sulfate (SDS) and lauryl methacrylate (LMA), together with uniformly dispersed lignosulfonate-modified poly(3,4-ethylenedioxythiophene) (LS@PEDOT) conductive fillers. The PAM/LS@PEDOT hydrogel exhibits an outstanding tensile strength of 818 kPa and a large fracture strain of 1541%, along with remarkable fatigue resistance and efficient energy dissipation under cyclic deformation. Owing to the continuous conductive pathways formed by well-dispersed LS@PEDOT, the hydrogel achieves a conductivity of 0.82 S m–1. When used as a flexible electrode in a triboelectric nanogenerator, the assembled TENG delivers an open-circuit voltage of 85 V and a maximum power density of 210.6 mW m–2. Moreover, it can power small electronic devices and enable self-powered information transmission and sensing. This work provides a valuable reference for hydrogel-based TENG in biomechanical energy harvesting and self-powered wearable electronics.
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高影响因子
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