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Chinese Journal of Polymer Science 2023年第8期41卷 1298-1304,I0011页

作者： Rui-Ke Zou Guang-Feng Liu Gui-Xiang Chen Xin Li Ze-Kun Zhou Zhen Liu Peng Zhang PCFM Lab School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China National Facility for Protein Science in Shanghai Zhangjiang LaboratoryShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

In this work,we study the poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)structure in aqueous dispersion with small-angle X-ray scattering(SAXS).In-depth structure analysis is achieved based on a set of complementary and sophisticated algorithms,which provide not only shape and packing of chains but also 3D structure of the colloids.The structure information of the pedot chain was extracted from the well-known Guinier,Porod and pair distance distribution function(PDDF)analysis of the SAXS data,while the 3D modelling was achieved with the DAMMIF and DAMAVER programs in ATSAS software package.To the best of our knowledge,we first establish the 3D model of the PEDOT:PSS colloids’structure that will help people to understand the supramolecular assembly in aqueous dispersion,which sheds light on the solution structure study of polymers that are widely used in daily life.

关键词： PEDOT:PSS Solution structure SAXS 3D modelling

基于PEDOT:PSS电极的柔性透明IPMC材料研究

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材料导报 2023年第6期37卷 194-201页

作者：常龙飞杨海林金珂沈锦杰朱子才胡颖合肥工业大学工业与装备技术研究院航空结构件成形制造与装备安徽省重点实验室合肥230009 合肥工业大学先进功能材料与器件安徽省重点实验室合肥230009 西安交通大学机械工程学院西安710049

透明柔性功能材料对于现代机械电子器件的发展至关重要。本工作通过结合溶液浇铸法和滚涂法探索了Nafion/IL基体膜、PEDOT:PSS电极的透明IPMC材料制备工艺,研究了其力电特性及电致动性能规律,并针对主要的制备工艺参数进行了正交优化,对... 详细信息

透明柔性功能材料对于现代机械电子器件的发展至关重要。本工作通过结合溶液浇铸法和滚涂法探索了Nafion/IL基体膜、PEDOT:PSS电极的透明IPMC材料制备工艺,研究了其力电特性及电致动性能规律,并针对主要的制备工艺参数进行了正交优化,对Nafion/IL基体膜厚度、每侧PEDOT:PSS电极滚涂量、浸泡在IL中的热压时间以及糙化程度的影响水平进行了深入分析。根据正交优化参数制备的透明IPMC具有良好的光学透明性、电化学特性以及力学特性。本工作制备的透明IPMC在5 V电压作用下最大尖端位移峰-峰值可达11.824 mm,且具有高频响应特性,有效响应频率高达100 Hz。本工作对丰富IPMC制备工艺方法、推动IPMC材料在透明柔性电子器件领域的应用具有重要意义。

关键词：透明IPMC Nafion/IL膜 PEDOT:PSS 溶液浇铸法滚涂驱动性能

Chemical Coupled PEDOT:PSS/Si Electrode: Suppressed Electrolyte Consumption Enables Long‑Term Stability

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Nano-Micro Letters 2021年第3期13卷 197-208页

作者： Xuejiao Liu Zhixin Xu Asma Iqbal Ming Chen Nazakat Ali CheeTongJohn Low Rongrong Qi Jiantao Zai Xuefeng Qian School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites Shanghai Electrochemical Energy Devices Research CenterShanghai Jiao Tong UniversityShanghai 200240P.R.China Warwick Electrochemical Engineering Group Energy Innovation CentreWMGUniversity of WarwickCoventry CV47ALUK

Huge volume changes of Si during lithiation/delithiation lead to regeneration of solid-electrolyte interphase(SEI)and consume electrolyte.In this article,γ-glycidoxypropyl trimethoxysilane(GOPS)was incorporated in Si/PEDOT:PSS electrodes to construct a flexible and conductive artificial SEI,effectively suppressing the consumption of electrolyte.The optimized electrode can maintain 1000 mAh g^−1 for nearly 800 cycles under limited electrolyte compared with 40 cycles of the electrodes without GOPS.Also,the optimized electrode exhibits excellent rate capability.The use of GOPS greatly improves the interface compatibility between Si and PEDOT:PSS.XPS Ar+etching depth analysis proved that the addition of GOPS is conducive to forming a more stable SEI.A full battery assembled with NCM 523 cathode delivers a high energy density of 520 Wh kg^−1,offering good stability.

关键词： Conductive binder PEDOT:PSS Cross-link XPS depth analysis Stable SEI Lithium-ion batteries

PEDOT:PSS/聚(丙烯酰胺-甲基丙烯酸)导电水凝胶的制备与性能

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复合材料学报 2022年第3期39卷 1131-1140页

作者：孙富昌潘雨辰张云飞刘辉杜飞鹏武汉工程大学材料科学与工程学院武汉430205

通过原位自由基溶液聚合法制备了聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)/聚(丙烯酰胺-甲基丙烯酸)(P(AAM-MAA))导电水凝胶。采用FTIR、Raman、TGA和SEM分别表征了PEDOT:PSS/P(AAM-MAA)的组成与形貌,测定了PEDOT:PSS/P(AAM-MAA)的透光率、电导率、拉伸性能、力敏性能及传感性能。结果表明:PEDOT:PSS均匀地分散在P(AAM-MAA)水凝胶体系中,使PEDOT:PSS/P(AAM-MAA)具有较好的电导率和透明性(>50%),MAA的引入既提升了PEDOT:PSS/P(AAM-MAA)的电导率,也改善了其拉伸性能和力敏性能。当导电水凝胶中MAA的含量从0wt%增加到2.52wt%时,PEDOT:PSS/P(AAM-MAA)的电导率从0.043 S·m^(-1)增加到0.060 S·m^(-1),其拉伸强度、断裂伸长率分别从46 kPa、76%增长到68 kPa、129%。PEDOT:PSS/P(AAM-MAA)也表现出良好的线性灵敏度(R;>0.983)(应变:0%~70%)。电阻变化曲线表明制备的水凝胶可作为传感器通过电阻信号变化来监测人体的各种微小运动。

关键词： PEDOT:PSS 聚(丙烯酰胺-甲基丙烯酸) 导电水凝胶电导率拉伸性能传感性能

通过共混改性提升PEDOT:PSS热电性能的研究进展

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材料导报 2023年第7期37卷 210-219页

作者：赵文姝梁耕源雷博文贺雍律肖颖邢素丽靳力张鉴炜国防科技大学空天科学学院长沙410073

热电材料是一种可以直接将热能转化为电能的功能材料,基于热电材料的能源技术属于清洁能源技术。由于无机热电材料存在毒性大、脆性大、成本高等局限性,有机热电材料引起了人们的广泛关注。有机热电材料中,聚(3,4-乙烯二氧噻吩):聚苯乙... 详细信息

热电材料是一种可以直接将热能转化为电能的功能材料,基于热电材料的能源技术属于清洁能源技术。由于无机热电材料存在毒性大、脆性大、成本高等局限性,有机热电材料引起了人们的广泛关注。有机热电材料中,聚(3,4-乙烯二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)凭借高导电、低导热等特性成为研究热点,但其综合性能仍未满足应用需求,因此研究者采用多种方法对PEDOT:PSS进行改性以提升其热电性能。本文主要介绍了利用离子液体、无机填料、碳纳米管和小分子试剂等与PEDOT:PSS共混改性以提升其热电性能的研究进展,最后总结了进一步提高PEDOT:PSS热电性能所面临的问题与未来的研究方向。

关键词： PEDOT:PSS 离子液体无机填料碳纳米材料小分子试剂

High-gain signal-on PEDOT:PSS organic photoelectrochemical transistor biosensing modulated by a MXene/MOFs/NiO Schottky heterojunction

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Science China Chemistry 2023年第2期66卷 578-585页

作者： Zheng Li Yi-Tong Xu Jin Hu Ting Wang Fang-Qing Liu Hong Zhou Guang-Xu Chen Peng Lin Wei-Wei Zhao Jing-Juan Xu Hong-Yuan Chen State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Shenzhen Key Laboratory of Special Functional Materials&Guangdong Research Center for Interfacial Engineering of Functional Materials College of Materials Science and EngineeringShenzhen UniversityShenzhen518060China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China School of Environment and Energy State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSouth China University of TechnologyGuangzhou510006China

Herein we report a high-gain signal-on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)organic electrochemical transistor(OECT)biosensing using an accumulation-mode PEDOT:PSS OECT modulated by a light-fueled MXene/MOFs/Ni O Schottky heterojunction.In such a system,the MXene/MOFs/Ni O Schottky heterojunction exhibited superior gating effect,as it not only enabled the fast-directional charge transfer but also guaranteed the maximal accessibility of the electrolyte to topped 2D MXene with large surface area.In linkage with a bi-enzyme cascade system,the quinone derivatives produced by the cascade reaction of alkaline phosphatase(ALP)and tyrosinase(TYR)could serve as effective electron acceptors for the representative Ti_(3)C_(2)/PCN-224/Ni O heterojunction,underpinning an innovative method for sensitive detection of ALP activity with a low detection limit of 0.001 U L^(-1).Remarkably,the as-developed system demonstrated a remarkable current gain as high as near 10^(4),which to our knowledge is the highest one among existing OECT biosensory devices.This work represents a generic protocol to develop the novel signal-on PEDOT:PSS OECT platform towards biochemical detection and beyond.

关键词： signal-on PEDOT:PSS organic electrochemical transistor biosensing Schottky heterojunction

One-step post-treatment boosts thermoelectric properties of PEDOT:PSS flexible thin films

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Journal of Materials Science & Technology 2023年第1期132卷 81-89页

作者： Xingyu Liu Xiao-Lei Shi Li Zhang Wei-Di Liu Yanling Yang Zhi-Gang Chen School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science and TechnologyXi’an 710021China School of Chemistry and Physics Queensland University of TechnologyBrisbaneQLD 4000Australia Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQLD 4072Australia

Developing high-performance poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)sig-nificantly widens the practical applications of flexible organic thermoelectric devices,while the water-based co-solvent dopants and/or post-treatments are still rarely studied so far.Here,we develop a one-step post-treatment to improve the power factor of PEDOT:PSS films by using a water-based solution,which is composed of co-solvent(polar solvent dimethylacetamide(DMAC)and deionized water)and organic reducing agent L-ascorbic acid(LAA).The 80 vol.%DMAC solution significantly boosts the room-temperature electrical conductivity of the films from 5 to 964 S cm^(−1),while the Seebeck coefficient can be further enhanced from 18.7 to 25μV K−1 by treating with 0.5 mol L−1 LAA,contributing to a sig-nificantly improved power factor of 55.3μW m^(−1)K^(−2).The boosted electrical conductivity is ascribed to the separated pedot and pss phases triggered by the high dielectric constant and polarity of DMAC;while the improved Seebeck coefficient is attributed to the reduced oxidation degree of pedot from the reducing agent LAA,both confirmed by the comprehensive structural and morphological characteri-zations.Furthermore,a maximum power factor of 64.4μW m^(−1)K^(−2)can be achieved at 360 K and the observed temperature-dependent electrical transport behavior can be well explained by the Mott variable range hopping model.Besides,a flexible thermoelectric device,assembled by the as-fabricated PEDOT:PSS films,exhibits a maximum output power of∼23 nW at a temperature difference of 25 K,indicating the potential for applying to low-grade wearable electronics.

关键词： Thermoelectric PEDOT:PSS Post-treatment Dimethylacetamide L-ascorbic acid

Flexible PEDOT:PSS nanopapers as“anion-cation regulation”synergistic interlayers enabling ultra-stable aqueous zinc-iodine batteries

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Journal of Energy Chemistry 2022年第12期75卷 310-320,I0008页

作者： Ying Zhang Tianyu Zhao Shanchen Yang Yaxin Zhang Yue Ma Zhaohui Wang College of Materials Science and Engineering Hunan UniversityChangsha 410082HunanChina State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072ShaanxiChina

Aqueous zinc-iodine(Zn-I_(2))batteries are promising candidates for low-cost grid-scale energy storage systems.However,the long-term stability and energy density of the Zn-I_(2)batteries are largely hindered by the lack of feasible and scalable methods that coherently suppress polyiodide shuttling and Zn dendrites growth,especially at high current densities.Herein,a flexible,thin and lightweight poly(3,4-ethy lenedioxythiophene):polystyrene sulfonate(PEDOT:PSS)nanopaper is designed as an“anion-cation regulation”synergistic interlayer to tackle the above issues.The PEDOT:PSS interlayer exhibits a 3D nanofibrous network with uniformly distributed mesopores,abundant polar groups and intrinsic conductivity,which renders an even Zn^(2+)flux at Zn anode and facilitates homogeneous current distributions at I_(2)cathode.Meanwhile,such interlayer can act as physiochemical shield to enhance the utilization of I_(2)cathode via the coulombic repulsion and chemical adsorption effect against polyiodide shuttling.Thus,long-term dendrite-free Zn plating/stripping is achieved at simultaneous high current density and high areal capacity(550 h at 10 m A cm^(-2)/5 m Ah cm^(-2)).Zn-I_(2)batteries harvest a high capacity(230 m Ah g^(-1)at 0.1 A g^(-1))and an ultralong lifespan(>20000 cycles)even at 10 A g^(-1).This work demonstrates the potential use of the multifunctional interlayers for Zn-I_(2)battery configuration innovation by synergistic regulation of cations and anions at the electrodes/electrolyte interface.

关键词： PEDOT:PSS Interlayer Polyiodide shuttling Zn dendrites Aqueous zinc-iodine batteries

Improving open-circuit voltage and short-circuit current of high-efficiency silicon-based planar heterojunction solar cells by combining V_(2)O_(5)with PEDOT:PSS

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Journal of Materiomics 2023年第3期9卷 438-446页

作者： Zhiting Luo Chen Yang Xiuhua Chen Wenhui Ma Shaoyuan Li Kaixin Fu School of Materials and Energy Yunnan UniversityYunnan650500China Yunnan Silicon Materials Engineering Technology Research Center Kunming University of Science and Technology650093China National Joint International Research Center for Optoelectronic Energy Materials Yunnan UniversityYunnan650500China

In recent years,a novel PEDOT:PSS/n-Si planar heterojunction solar cell has been extensively studied in the photovoltaic field.Different V_(2)O_(5)-IPA concentrations mixed in PEDOT:PSS samples as hole transport layer were prepared by means of spin coating technique and mechanical mixing of organic and inorganic materials.V_(2)O_(5)was studied for its effects on the surface morphology,chemical composition,and optical transmittance of PEDOT:PSS films.The findings of the study show that the addition of V_(2)O_(5)particles changes the surface morphology of PEDOT:PSS films and promotes its superior ohmic contact with the Si interface.Furthermore,PEDOT:PSS incorporated with V_(2)O_(5)particles that have outstanding optical and semiconductor properties reduces the rate of carrier recombination at the device interface and blocks electron transport to the anode in the fabricated Si-based solar cells.When compared to conventional PEDOT:PSS/Si planar heterojunction solar cells,the fill factor,photoelectric conversion efficiency,open-circuit voltage,and short-circuit current density of the devices prepared in this study can be significantly improved,reaching up to 70.98%,15.17%,652 mV and 32.8 mA/cm^(2),respectively.This research provides a promising and effective method for improving the photoelectric conversion performance of PEDOT:PSS/Si heterojunction solar cells,which enables the application of V_(2)O_(5)in Si solar cells.

关键词： Si PEDOT:PSS Heterojunction photovoltaic devices V_(2)O_(5)-IPA High conductivity Semiconductor film

基于MXene/PEDOT:PSS柔性压力传感器的制备及其在唇语识别中的应用

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复合材料学报 2024年

作者：钟山贾磊李晓春张校亮孟雪娟太原理工大学生物医学工程学院生物医学精准检测与仪器研究所

唇语是声带损伤、喉舌损伤及听障患者的一种有效的语言沟通方式。唇语信号由嘴唇和面部肌肉运动而产生，其包含了大量的语音信息。通过柔性压力传感器来捕获肌肉运动可实现唇语信号的提取和识别，为听、说功能障碍患者提供了更加自然、... 详细信息

唇语是声带损伤、喉舌损伤及听障患者的一种有效的语言沟通方式。唇语信号由嘴唇和面部肌肉运动而产生，其包含了大量的语音信息。通过柔性压力传感器来捕获肌肉运动可实现唇语信号的提取和识别，为听、说功能障碍患者提供了更加自然、便捷的无障碍交流方式。本研究采用二维材料MXene和高导电聚合物聚(3，4-乙基二氧噻吩):聚(苯乙烯磺酸盐)(PEDOT:PSS)作为复合材料，以可拉伸的且具有微结构的Ecoflex作为柔性基底，制备了一种压阻式柔性压力传感器。该传感器在0-2.5 kPa压力范围内具有42.31 kPa-1的高灵敏度及快速响应(<150 ms)，并且在10000次压缩-释放循环测试中显示出高稳定性。将该柔性压力传感器贴附于嘴角上并捕获唇语的肌肉运动，结合卷积神经网络算法对十二生肖英语单词信号进行训练和测试，平均准确率高达90.18%。该工作增加了唇语识别系统的多样性，为唇语运动信号直接转化为语音或文本奠定了重要基础。

关键词：柔性可穿戴电子设备唇语柔性压力传感器 MXene PEDOT:PSS 卷积神经网络