JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Ming Xu,Yu Ma,Lei Wang,Shu Huang,Liming Chen,Rong Liu,Zikun Li,Guohui Yuan
Transition metal selenides (TMS) have been used to prepare hundreds of electrode materials for ion batteries due to their superior theoretical capacity, but have been repeatedly limited by the sluggish reaction kinetics and the enormous volume change during the repeated charge/discharge process. Here, we report a facile strategy to fabricate organic–inorganic composites by engineering a unique chemical bonding interface between TMS and conductive polymers. For the first time, poly(3,4-ethylenedioxythiophene) (PEDOT) is utilized to encapsulate iron diselenide (FeSe 2 ) nanoparticles by in situ polymerization, and the Fe-S bonds are meanwhile formed at the interface of FeSe 2 and PEDOT. The experimental analysis demonstrates the stability of Fe-S bonds during the sodiation/desodiation process and after long cycling, which can serve as a “bridge” for fast charge transfer and also serve as a “rivet” to stabilize the composite structure. When used for sodium ion storage, the composite offers an exceptionally long lifetime of up to 17,000 loops at 10 A/g without capacity degradation. In addition, it delivers a high specific capacity of 490.4 mAh/g and retains 60 % when the current density is amplified 150 times. The assembled full cell also exhibits excellent cycling stability. This work will provide a feasible way to improve the metal oxide/sulfide/selenides for long-life ion batteries.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
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2017
·Vol. 35
·期 10
·1222-1230
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IF 1.692
Wu Qian,Xu Bing,Wei Jun-jie,Wang Qing,Wang Qi-gang,Liu Wen-guang
Over the past decades, the urgent need for high strength conductive hydrogels in diverse applications has motivated an unremitting effort to combine the improved mechanical properties of hydrogels with conductive performances. In this work, high strength conductive hydrogels intensified with intermolecular hydrogen bonding are fabricated by in situ mixing poly(2-vinyl-4,6-diamino-1,3,5-triazine- co -polyethylene glycol diacrylates) (PVDT-PEGDA) hydrogels with poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT/PSS). The conductive hydrogels in deionized water exhibit high mechanical performances with compressive strength and tensile strength in the range of 7.58−9.52 MPa and 0.48−1.20 MPa respectively, which are ascribed to the intermolecular hydrogen bonding interactions of diaminotriazine-diaminotriazine (DAT-DAT) in the network. Meanwhile, adding PEDOT/PSS can significantly increase both the specific conductivities and equilibrium water contents of the hydrogels. These cytocompatible conductive hydrogels may have a great potential to be used as electrical stimuli responsive soft biomaterials.
研究领域:
材料科学
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生物医学工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 7
·4824-4834
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IF 3.201
Guo Ye,Qianjie Zhou,Danqin Li,Yinxiu Zuo,Xuemin Duan,Weiqiang Zhou,Jingkun Xu
Freestanding flexible capacitive materials are ideal for use in bendable electronic devices. However, it is difficult to prepare pure PEDOT films in a freestanding state by chemical and electrochemical methods. Here, we used a simple strategy of introducing alkoxy, ether, ester, and amide chains for bridging two EDOT units to form precursors, which could then be electrodeposited readily to produce freestanding and flexible films. The precursor with the amide group was suitable for obtaining higher-quality films with improved thermal stability, mechanical properties, and capacitive performance. In addition, the asymmetric PBEDTA//PEDOT capacitors exhibited a capacitance retention rate of 98.5% after 5000 cycles, which is higher than those of PBEDTH//PEDOT (92.7%), PBEDTG//PEDOT (80.5%), and PBEDTE//PEDOT (86.8%) capacitors. This result indicates that the polymer films and, in particular, the PBEDTA films, are suitable for use in flexible supercapacitors.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
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2014
·Vol. 182
·期 3
·679-685
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IF 3.719
Xu Guiyun,Wang Wenting,Li Beibei,Luo Zhonglin,Luo Xiliang
An electrochemical dopamine sensor was developed by electrochemical modification of a carbon paste electrode with a biocomposite made from poly(3,4-ethylenedioxythiophene) (PEDOT) that was doped with double stranded or single stranded DNA. The resulting conducting biocomposite displays excellent electrocatalytic activity towards the oxidation of dopamine (DA) which is attributed to the presence of the DNA dopant. Under optimum conditions and at a working potential of 300 mV, the modified electrode is capable of detecting DA in the 0.25 to 66 μM concentration range. The detection limit is 74 nM. The sensor is not interfered by uric acid and ascorbic acid.
PEDOT biocomposites doped with dsDNA (left) and ssDNA (right) can be electrochemically prepared and used for the sensitive and selective detection of dopamine owing to their excellent catalytic activity towards dopamine oxidation.
研究领域:
生物医学工程
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分析化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
·
IF 16.744
Boxiao Li,Jun Li,Dongkai Ni,Songsong Tang,Juncheng Fan,Kaiyuan Shi,Zhen Li,Jian Zhou
Compared with the deposition of thin films on a solid substrate, using a liquid substrate provides an atomic level roughness and extra degree of freedom in manipulating the system conditions such as interfacial tension, which can be preferred for the fabrication of high-performance films. Herein, we develop a liquid-substrate-based spontaneous spreading (LSBS) technology that applies miscible liquids of high surface tension as the substrate and spreads the polymer solution under capillary forces for thin-film processing. We demonstrate the LSBS technology using a conductive polymer, poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT/PSS), and the spread thin films were then transferred to various untreated substrates. LSBS technology uses a miscible liquid substrate for the first time and mediates the spreading, solvent removal, and ion exchange process between the liquid substrate and PEDOT/PSS, increasing the crystallinity of the PEDOT/PSS, thereby significantly improving its electrical conductivity. The LSBS mechanism is investigated through the time–space relationship between spreading and solvent removal, from which we confirm the operating window. Our LSBS technology exhibits a spontaneous, scalable, and versatile process for forming polymer thin films with thicknesses from nano to micron scales on liquid substrates, providing an easy route to control the geometry and presenting universally applicable to different materials.
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
International Journal of Electrochemical Science
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2023
·
IF 1.5
Yuanfu Liu,Wu Zhang,Yi Liu
In this investigation, we developed an ion-selective electrode-based potassium ion sensor for the detection of potassium ions in sweat, and evaluated its selectivity and stability. The sensor was fabricated through in-situ polymerization of 3,4-ethylenedioxythiophene (EDOT) monomer on a graphene-modified glassy carbon electrode using a constant current method. This was followed by the application of a potassium ion-selective membrane to form a poly(3,4-ethylenedioxythiophene) (PEDOT) modified potassium ion sensing electrode. The physical morphology and electrochemical properties of the sensor were characterized using scanning electron microscopy (SEM) and an electrochemical workstation. The results indicated that the conductivity of the PEDOT modified electrode was significantly enhanced, and the potassium ion sensor exhibited a near-Nernstian response over the range of 1–40 mM potassium ion concentration. The sensor demonstrated good repeatability, reproducibility, long-term stability, and high selectivity against interference from sodium ions, glucose, dopamine, and urea.
研究领域:
生物医学工程
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运动生理学
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材料科学
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产品关联
DOI
高影响因子
ANALYTICAL LETTERS
·
2023
·
IF 2
Wenyan Tao,Mingguo Ye,Ying Liu,Zhenjia Lin,Chenchen Wang,Yujun Huang,Dawei Pan
An electrochemical sensor based upon a poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT-PSS) co-polymer film with gold nanoparticles (AuNPs) modified microelectrode is reported for the determination of Fe(III). Scanning electron microscopy images showed that the AuNPs were immobilized on gold (Au) microelectrode by formation of a nanofilm with PEDOT-PSS. The individual particles and their cluster-like aggregates provide a larger active electrochemical area and higher conductivity, which facilitates the determination of Fe(III). Electrochemical impedance spectroscopy (EIS) shows the AuNPs/PEDOT-PSS/Au microelectrode possesses high conductivity. A low detection limit of 0.01 µM Fe(III) was obtained using the modified microelectrode by differential pulse voltammetry (DPV) due to its large specific surface area, high conductivity, and the presence of more active sites. The optimized pH of the supporting acetate buffer was 2.0. The AuNPs/PEDOT-PSS/Au provided a linear range from 0.0119 μM to 7.14 μM. The modified electrode was successfully employed for the the determination of total dissolved iron in river water from Three Gorges with satisfactory results.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Dongyu Si,Haoxin Shao,Shuo Zhang,Yongkun Hao,Zhiyan Yan
A multi-cross-linked conductive hydrogel (ANHP) with HEC/PEDOT:PSS enhancement is designed for underwater motion sensing. • The ANHP hydrogel exhibits ultra-low equilibrium swelling ratio, outstanding tensile properties and high toughness. • The ANHP hydrogel sensor has high sensitivity, wide strain response range, fast response time and excellent cyclic stability. • The ANHP hydrogel detects multi-joint motions in air and underwater, and provides emergency signal sending via Morse code. Flexible conductive hydrogels, as core candidate materials for next-generation wearable sensors and underwater detection devices, show great potential for applications in Marine engineering, biomedical monitoring, and other fields. However, traditional conductive hydrogels tend to excessive swelling in the water environment due to abundant hydrophilic groups in their network structure, resulting in mechanical degradation and distortion of sensing signals, which seriously restricts their practical application in underwater scenarios. In this study, acrylamide (AM) and N-hydroxymethylacrylamide (NMA) were used as copolymerization monomers, hydroxyethyl cellulose (HEC) as the core biobased skeleton and multifunctional regulatory medium, and PEDOT:PSS as the high-conductivity functional filler to successfully construct a hydrogel (ANHP) with a multiple cross-linked structure. The test results show that the prepared hydrogel exhibits an extremely low equilibrium swelling ratio (3%), excellent tensile properties (0.614 MPa, 1343.81%), high sensitivity (GF = 3.35), a wide strain response range (0–400%), a fast response time (0.25 s), and outstanding cyclic stability over 500 cycles. The hydrogel-based sensor can stably detect human motions underwater and realize underwater Morse code communication. This study provides an innovative strategy for the development of high-performance underwater flexible sensors and an important reference for the high-performance and multifunctional application of carbohydrate-based functional materials. Download: Download high-res image (205KB) Download: Download full-size image Synthetic route and structural diagram of ANHP hydrogel.
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DOI
高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 19
·2894-2904
·
IF 8.683
Xiaojuan Shen,Xinyue Wei,Tongfei Wang,Sumin Li,Haitao Li
Si-Based supercapacitors (SCs) have drawn considerable attention due to their inherent integration with the current Si-based microelectronics. However, the complicated and expensive manufacturing processes severely limit their practical applications. Composites of metal oxides and conductive polymers are regarded as promising active materials in SCs due to their high specific capacitance, good conductivity, and easy fabrication. Nevertheless, to the best of our knowledge, there are very few reports on their applications in Si-based SCs. Herein, a composite of poly(3,4-ethylenedioxythiophene) (PEDOT) and manganese oxide (MnOx) modified silicon nanowire arrays (SiNWs) was elaborately designed and well prepared using a facile, simple, and low-cost method, where PEDOT was electropolymerized on SiNWs followed by dipping in KMnO4 solution. Platinum (Pt) particles were introduced between PEDOT and MnOx, which not only enhanced the mass-loading of MnOx but also improved the conductivity of the composite. After spin-coating poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) layer doped with silver nanowires (PsAg) on the composite, a hierarchical core–shell electrode comprising active materials and current collector was formed. Benefiting from the large surface area of porous SiNWs/PEDOT, high mass-loading of MnOx, and shorter electron/ion transfer paths, an excellent areal capacitance of 352.08 mF cm−2 at 2 mA cm−2 was achieved by the synthesized SiNW/PEDOT@Pt/MnOx electrode, which is superior to almost all the previously reported areal capacitance values of Si-based electrodes. Additionally, a symmetric device was prepared to investigate its practical applicability, which displayed a maximum energy density of 0.049 mW h cm−2 and considerable retention of 85.25% over 2000 cycles. These preliminary results demonstrate that the hierarchical composites of metal oxides and conductive polymers decorated three-dimensional (3D) silicon are promising electrode materials for future low-cost and high-performance SCs.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Changzhou Chen,Wenyao Feng,Weixin Wu,Yuanyuan Yu,Guangfu Qian,Lianhua Fu,Douyong Min
In the development of the modern electronics industry, the high mechanical performance, the green, and high-performance electromagnetic interference (EMI) shielding materials need to urgently be developed. Herein, polythiophene/Wood (PEDOT/wood) was fabricated through in situ polymerizing thiophene in the delignified paulownia wood. The results indicated that PEDOT were evenly distributed on the carbohydrates framework of the wood, endowing the composite with a highly electrical conductivity of 112.8 S m −1 and a superior electromagnetic shielding effectiveness of 46.2 dB at 2 mm thickness. The normalized SE (EMI SE/thickness) of the composite calculated as 213 dB/cm. Meanwhile, a high compressive strength and tensile strength of the prepared PEDOT/wood composite were tested as 50.9 MPa and 67.8 MPa, respectively. Such a high conductivity, strong mechanical properties and renewable PEDOT/wood suggests it as a potential candidate for the application in electromagnetic interference shielding and paves a new way for the biomass-based electromagnetic shielding materials.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
ELECTROANALYSIS
·
2014
·Vol. 26
·期 10
·2207-2215
·
IF 2.502
Liping Wu,Yansha Gao,Jingkun Xu,Limin Lu,Tao Nie
A novel redox polymer comprised of poly(3,4-ethylenedioxythiophene) (PEDOT) and ethylenediamine tetraacetic acid-Ni 2+ (EDTA-Ni) complex serving as doping anions has been synthesised by a facile one-step electrochemical approach and utilized as an efficient electrode material for sensitive luteolin detection. The morphology, chemical structure and composition of the redox polymer were analyzed by SEM, UV-vis and FT-IR spectrum. Electrochemical tests revealed that the redox polymer was highly electrochemically reversible and exhibited good electrocatalytic activity to the redox reactions of luteolin with a linear range covering from 1 nM to 10 µM with a low detection limit of 0.3 nM of luteolin.
研究领域:
材料科学
·
分析化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2020
·
IF 10.257
Rui Han,Guixiang Wang,Zhenying Xu,Leyao Zhang,Qun Li,Yinfeng Han,Xiliang Luo
An antifouling electrochemical biosensing platform was constructed based on conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) planted with designed peptides. The designed peptides containing doping and antifouling sequences were anchored to an electrode surface , followed by the electrochemical polymerization of PEDOT. The negatively charged doping sequence of the peptide was gradually doped into the PEDOT during the polymerization process, and by controlling the polymerization time, it was able to exactly dope the whole doping sequence into the PEDOT film, leaving the antifouling sequence of the peptide stretched out of the PEDOT surface. Therefore, an excellent conducting and antifouling platform was constructed just like planting a peptide tree in the PEDOT soil. With antibodies immobilized on the peptide, an antifouling electrochemical biosensor for the detection of a typical biomarker CA15-3 was developed. Owing to the unique properties of the conducting polymer PEDOT and the antifouling peptide, the electrochemical biosensor exhibited high sensitivity and long-term stability, and it was capable of detecting CA15-3 in serum of breast cancer patients without suffering from biofouling. The strategy of planting designed antifouling peptides in conducting polymers offered an effective way to develop electrochemical sensors for practical biomarkers assaying in complex biological samples.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）