Materials Chemistry Frontiers
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2021
·Vol. 5
·期 16
·6114-6124
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IF 6.482
Xiaojuan Shen,Xuan Zhang,Tongfei Wang,Songjun Li,Zhaoqiang Li
In this study, a novel 3D porous Si-based supercapacitor electrode was developed using a simple solution method, which involved first the in situ polymerization of polyaniline particles (PANI) on Si nanowire arrays (SiNWs), followed by the further electrodeposition of a polyaniline nanofiber (PANF) film. Highly doped PEDOT:PSS layers were introduced before and after PANF deposition, serving as the built-in 3D current collector of the electrode. To improve the capacity of the electrode, the PANF film was incorporated with graphene and the PEDOT:PSS layer was doped with chloroplatinic acid (H2PtCl6). Due to the smart design, SiNWs only acted as a scaffold, thus the electrodes could be fabricated on any Si-based wafer commonly used in micro-electronic devices regardless of its purity, conductivity and surface passivation. Here, the Si-based supercapacitor electrode was first fabricated on a solar-grade (SG) Si wafer, which exhibited a high areal capacitance of 718.85 mF cm−2 at 1 mA cm−2. Additionally, an aqueous asymmetric supercapacitor was assembled by using the resultant polymer-coated SiNWs on the SG wafer as the positive electrode, and the activated carbon (AC) as the negative electrode, which exhibited an energy density of 0.194 mW h cm−2 at a power density of 0.85 mW cm−2. Both of them outperform the reported values of most of the electronic-grade (EG) Si-based electrodes and supercapacitors. This work not only paves a promising way for the design of a 3D electrode, but also opens up a new opportunity to develop low-cost and high-performance Si-based supercapacitors.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Hui Zhang,Zhenyang Wang,Zhixing Chen,Xingyue Zhang,Yuanming Zhou,Fei Mei
The two-dimensional transition metal carbide MXenes, often designated by Ti 3 C 2 T x , have garnered significant interest on account of their distinctive optoelectronic characteristics. In this paper, PEDOT:PSS/Ti 3 C 2 T x composite hole transport layer (HTLs) was prepared by adding the MXenes material Ti 3 C 2 T x into PEDOT:PSS, and quasi-two-dimensional perovskite light-emitting diodes (PeLEDs) were fabricated and investigated. While the addition concentration of Ti 3 C 2 T x was 0.25 mg/mL, the optimal device shows the maximum luminance of 6250 cd/m 2 , and the current efficiency of 6.17 cd/A, which is 133 % and 112 % higher than the reference device without Ti 3 C 2 T x , respectively. It is indicated that the additive incorporation of Ti 3 C 2 T x in PEDOT:PSS can improve the efficiency of hole injection and conductivity of hole transport layer, and passivate the defects of perovskite film, thus enhancing the optoelectronic performance of PeLEDs. The findings of this study indicate that the PEDOT:PSS/Ti 3 C 2 T x composite HTLs has considerable potential for application in PeLEDs.
研究领域:
材料科学
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光电材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2025
·
IF 3.3
Yuhao Luo,Qian Zhu,Lei Cao,Lanlan Fan,Feng Gu,Shixian Xiong
Flexible micro-supercapacitors (FSCs), with their outstanding flexibility and low weight, offer great potential for a wide range of applications in the field of flexible electronics. Herein, the few-layer Ti 3 C 2 T x MXene hybridized with commercial PEDOT:PSS dispersion are used as ink for aerosol jet printing (AJP) to fabricate interdigitated and double-helix electrodes on 2D polyethylene terephthalate (PET) films and 1D thermoplastic polyurethane fibers, respectively. By controlling the evaporation behavior of aerosol microdroplets during the printing process, a transformation from 2D Ti 3 C 2 T x MXene nanosheets to 3D wrinkled spherical structures on the surface of the flexible substrate is achieved, which increases the accessibility of ions to the electrochemical active sites. In addition, the introduction of PEDOT:PSS as a “bridge” connecting the Ti 3 C 2 T x MXene-wrinkled spheres not only enhances the electronic conductivity within the electrode but also improves the bending stability of the electrode. Consequently, the optimized MXene/PEDOT:PSS-based planar and fiber-architectured FSCs exhibit excellent areal capacitance and flexible stability. This work highlights the significant potential of AJP technology in developing electronic devices with fascinating functionalities on various flexible substrates.
研究领域:
材料科学
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能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Enhui He,Shengwei Xu,Guihua Xiao,Yuchuan Dai,Xinrong Li,Yilin Song,Fei Gao,Yu Zhang,Shihong Xu,Xinxia Cai
The acute hippocampal slice is useful for understanding how epilepsy spatially initiates, propagates, and terminates in the hippocampus, which is vital to study the epileptic mechanism in it. However, it is challenging to detect the electrical signals of the main cell layer (the granular cell layer in the dentate gyrus (DG) and the pyramidal cell layer in CA1 and CA3a–c), which play an important role in epilepsy, because it is difficult to be accurately located by electrodes and typically show low throughput. In this study, a special in vitro microelectrode array (MEA) for rat hippocampal slices was fabricated. The recording sites of the MEA were designed along the main cell layer to record accurately the electrical signals of this layer in each hippocampal sub-region. A special “less-hydrophilic-MWCNTs/PEDOT:PSS modification method” for in vitro MEA was applied to deposit electrochemically the MWCNTs/PEDOT:PSS nanocomposites onto the surface of the microelectrodes, which significantly improved their performance with low impedance (36.41 ± 3.07 kΩ), small phase delay (−41.2 ± 4.90°), high signal-to-noise ratio (S/N = 5.4) and good biocompatibility. The application of high-K + -ACSF and D-AP5 (NMDA receptor antagonist) showed a neural signal projection pathway of the epileptic discharges in the hippocampal slice. The epileptic discharges originated in CA3b, where the neurons acted as a pacemaker, and spread to CA1 and DG bi-directionally along the main cell layer. Moreover, the epileptic discharges spread backward (CA3b to DG) faster than forward (CA3b to CA1). The MEA provides a reliable and sensitive dedicated biosensor for hippocampal slices.
研究领域:
神经科学
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生物医学工程
✓ 已验证
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DOI
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 4
·2699-2709
·
IF 6.123
Cui Yifan,Zheng Guolin,Jiang Zhe,Zhou Yu,Wang Qiang,Zhou Man,Wang Ping,Yu Yuanyuan
The development and improvement of fabric-based stretchable strain sensors play a vital role in constructing wearable devices. In this paper, a flexible and sensitive cotton-based strain sensor for human motion monitoring was successfully developed by facile LBL-ESA (layer-by-layer electrostatic self-assembly) of chitosan (or chitosan quaternary ammonium salt) and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), abbreviated to PEDOT:PSS. Chemical structure and microscopic morphology of the cotton fabric coated with PEDOT:PSS were measured using X-ray photoelectron spectroscopy, Raman spectroscopy, Scanning electron micrographs, Fourier transform infrared spectrometer and color strength (K/S value). Electrical conductivity of the fabric changed with the “odd–even” oscillations of K/S value of the cotton fabric. Furthermore, cotton fabric alternately deposited with five cycles reached the highest electrical conductivity (0.335 mS/cm). Meanwhile, the fabric presents excellent UV protection capacity (maximum UPF value of 385.07), which was 24.4 times of pristine cotton fabric (15.76). In addition, cotton fabric strain sensor coated by PEDOT:PSS could effectively detect finger and knee movements of humans, showing a promising prospect in the field of human rehabilitation training, real-time monitoring, and gesture recognition due to its good stability and being highly responsive.
研究领域:
材料科学
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纺织工程
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2024
·
IF 8.1
Yuanze Meng,Zihao Li,Liying Wang,Xijia Yang,Yue Yang,Xuesong Li,Yi Jiang,Yang Gao,Wei Lü
In this study, first principles calculations are performed to investigate the relevant energy storage mechanisms of PEDOT:PSS membranes and WO 3 /MnO 2 . The calculation results indicate that the modified PEDOT:PSS reduces the interaction force between cation and inorganic material lattice , weakens the adsorption energy, and accelerates the electrochemical reaction kinetics. Simultaneously, the prepared composite material exhibits a higher state density and more energy orbitals. The cations of the electrolyte can be stored in the s and p orbitals of the material, leading to significant hybridization of electron clouds in these orbitals and improving the conductivity of the material. Based on the above calculation results, a WO 3 /MnO 2 self-healing electrochromic energy storage device is prepared. The device has a high specific capacitance (10.81 mF cm −2 ) and excellent cycle retention performance (97% retention rate after 1000 cycles), which ensures its efficient energy storage and reliable durability. Furthermore, the device has the self-healing capability to restore most of its functions even in the event of damage, ensuring its long-term utilization.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2020
·Vol. 7
·期 19
·2000754
·
IF 4.948
Wenzhong Fang,Pan Wang,Zitao Ni,Tao Sun,Chaoyu Xiang,Kun Yue,Rongfei Wang,Jie Yang,Yao Zhou,Chong Wang,Yu Yang
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hole injection layer plays an important role in planar Si/PEDOT:PSS heterojunction solar cells (HSCs). Herein, a MoO x mixed aqueous PEDOT:PSS cosolvent is developed and is applied into a Si/PEDOT:PSS solar cell preparation via a time-saving one-step spin-coating method. With an optimal concentration of MoO x dopants, the power conversion efficiency of the device exhibits from 10.26% up to 13.82% with all inherent photovoltaic parameters enhanced. The detailed characterization and analytical results indicate that an advanced electronic property is produced by MoO x dopants and interface optimization caused by synergistic effects from Mo 5+ and Mo 6+ species with PEDOT:PSS, which enhances its interface work function and promotes hole transportation capacity. The result paves a path for exploring efficient Si/PEDOT:PSS HSCs with suitable functional material and a simple solution-processable method.
研究领域:
材料科学
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光伏技术
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有机电子学
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2015
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IF 3.827
Zaifang Li,Fei Qin,Tiefeng Liu,Ru Ge,Wei Meng,Jinhui Tong,Sixing Xiong,Yinhua Zhou
We report on conductivity and optical property of three different types of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) films [pristine PH1000 film ( PH1000-p ), with 5 wt.% ethylene glycol additive ( PH1000-EG ) and with sulfuric acid post-treatment ( PH1000-SA )] before and after polyethylenimine (PEI) treatment. The PEI is found to decrease the conductivity of all the PEDOT:PSS films. The processing solvent of 2-methoxyethanol is found to significantly enhance the conductivity of PH1000-p from 1.1 up to 744 S/cm while the processing solvent of isopropanol or water does not change the conductivity of PH1000-p much. As for the optical properties, the PEI treatment slightly changes the transmittance and reflectance of PH1000-p and PH1000-EG films, while the PEI leads to an substantial increase of the absorptance in the spectral region of 400–1100 nm of the PH1000-SA films. Though the optical property and conductivity of the three different types of PEDOT:PSS films vary with the PEI treatment, the treated PEDOT:PSS films exhibit similar low work function. We demonstrate solar cells with a simple device structure of glass/low-WF PEDOT:PSS/P3HT:ICBA/high-WF PEDOT:PSS cells that exhibit good performance with open-circuit voltage of 0.82 V and fill factor up to 0.62 under 100 mW/cm 2 white light illumination.
研究领域:
材料科学
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光电技术
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Fuchang Sun,Xiaoyuan Huang,Xiong Wang,Hui Liu,Yanguang Wu,Feipeng Du,Yunfei Zhang
With increasing interest and demand for wearable electronics and healthcare devices, fabricating a conductive hydrogel sensor combining high transparency, self-adhesion and toughness is necessary but remains challenging. In this paper, we developed transparent, adhesive, stretchable and tough hydrogels via semi-interpenetrating network (SIPN) strategy. The SIPN consists of linear poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and chemically cross-linked poly(acrylamide-co-methacrylic acid). Here, methacrylic acid was used to improve the self-adhesion, tensile properties and the electrical conductivity of the hydrogel. The fabricated hydrogels exhibit high transparency, robust adhesion to various substrate surfaces as well as skin, relative high stretchability and tensile strength . Furthermore, the hydrogel also exhibits excellent linear response as a flexible strain sensor to detect human motions and tiny physiological signals. It is envisioned that the SIPN strategy and the introduction of methacrylic acid provide a new way for developing high performance conductive hydrogel for strain sensors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Rongtai Wan,Shuhan Liu,Zheng Li,Gen Li,Hai Li,Jianhong Li,Jingkun Xu,Ximei Liu
PEDOT:PSS hydrogel-based bioelectronic interfaces have gained significant attention in various fields including biomedical devices , wearable devices , and epidermal electronics. However, the development of high-performance bioelectronic interfaces that integrate excellent conductivity, strong adhesion , and advanced processing compatibility remains a challenge. Herein, we develop a high-performance bioelectronic interface by 3D printing of a novel poly(vinyl alcohol-formaldehyde) (PVAF)-PEDOT:PSS composite ink. Such a PEDOT:PSS-PVAF ink exhibits favorable rheological properties for direct-ink-writing 3D printing , enabling the fabrication of high-resolution patterns and three-dimensional structures with high aspect ratios . Hydrogel bioelectronic interface printed by such PEDOT:PSS-PVAF ink simultaneously achieves high conductivity (over 100 S m - 1 ), strong adhesion (31.44 ± 7.07 kPa), as well as stable electrochemical performance (charge injection capacity of 13.72 mC cm - 2 and charge storage capacity of 18.80 mC cm - 2 ). We further integrate PEDOT:PSS-PVAF hydrogel bioelectronic interface to fabricate adhesive skin electrodes for electromyography (EMG) signal recording. The resultant EMG skin electrodes demonstrate superior performance and stability compared to commercial products, maintaining high signal-to-noise ratio of > 10 dB under varying weights and repetitive motions. These advantageous performance of PEDOT:PSS-PVAF based hydrogel bioelectronic interfaces may be helpful for diverse bioelectronic applications like healthcare monitoring and epidermal bioelectronics.
研究领域:
生物医学工程
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材料科学
·
可穿戴设备
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Xinying Guo,Lian Wu,Longbin Li,Jingfei Zhang,Chen Wu,Liwen Wang,Yizhong chen,Wei Zeng
Alkaline nickel-zinc (Ni-Zn) batteries are considered as one of the most promising rechargeable battery systems. However, the poor cycling stability of the Ni cathode limit their service life. Herein, a conductive polymer (PEDOT:PSS) encapsulated Ni 3 S 2 hollow nanorod structure via facile immersion is proposed. PEDOT:PSS coating layer can not only provide adhesion for Ni 3 S 2 nanorods to prevent Ni 3 S 2 from falling off the substrate during cycling, but also facilitate electron transfer via the complete conductive pathway. The hollow nanorods structure of Ni 3 S 2 is beneficial to mitigate the volume change and accelerate the rapid transport of ions. Besides, a gel electrolyte with double network porous structure in our battery system is well designed. The ionic association of sodium alginate on Zn 2+ can effectively reduce the activity of bound water molecules in the solvation sheath of Zn 2+ , inhibit the side reaction and dendrite generation through the ion-confinement effect, to achieve uniform deposition of zinc ions . As a consequence, the as-designed quasi-solid-state flexible Ni-Zn battery demonstrates a high specific capacity of 1.06 mAh cm −2 (276.04 mAh g −1 ) at 8 mA cm −2 and an ultra-long cycle stability over 10,000 cycles with a capacity retention of 88.96% at 30 mA cm −2 .
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Zhuang-zhuang Zhou,Meng-meng Li,Ning Wei,Zheng Sun,Hao Liu,Jia-Cheng Feng,Xu Xia,Bing-jie Li,Hong Xia
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hydrogel are promising for applications in electromagnetic interference (EMI) shielding, energy storage, and electrochromic (EC) devices. However, challenges such as low conductivity at reduced solid content, limited charge storage, poor mechanical properties, and structural distortion during solvent treatment limit their high-performance applications. To address these issues, a high-fidelity, high-conductivity and multifunctional PEDOT:PSS hydrogel is developed by an ice crystal-assisted skeleton stacking and stepwise treatment strategy, achieving ultrahigh conductivity of 87,249 S m −1 at 5.8 wt% solid content. The PEDOT:PSS hydrogel also features a charge storage capacity of 35.66 mC cm −2 and a capacitance density of 587.6 mF cm −2 . Additionally, The PEDOT:PSS hydrogel demonstrates exceptional EMI shielding effectiveness, achieving 81.2 dB, and also exhibits an ultrahigh specific surface shielding efficiency of 30,769.23 dB cm 2 g −1 . Notably, The PEDOT:PSS maintains high EMI shielding stability even after undergoing various harsh conditions. Using femtosecond laser direct writing, the highly stable all-solid-state EC reflective displays are developed with ultrafast response (<0.3 s) and superior durability.
研究领域:
材料科学
·
电子工程
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）