ACS Applied Energy Materials
·
2023
·
IF 6.4
Xueyu Tao,Shifang Ye,Kehu Zhu,Liyang Dou,Peixin Cui,Jie Ma,Cheng Zhao,Xianyong Wei,Litong Guo,Akbar Hojjati-Najafabadi,Peizhong Feng
Although flexible supercapacitors (FSCs) have attracted tremendous attention, synthesis of supercapacitor electrodes that have outstanding electrochemical performance and excellent flexibility remains a continuous dilemma. Herein, conductive polymer composite hydrogels were synthesized via in situ polymerization of aniline (ANI) in a mixture of polyvinyl alcohol (PVA) and carbon nanotubes (CNTs), for which amino trimethylene phosphonic acid (ATMP) was employed as an organic doping acid. The as-prepared polyaniline (PANI)/PVA/ATMP/CNTs (PPAC) composite hydrogel electrodes exhibit a specific capacitance of up to 389.5 F g–1 at 0.5 A g–1, satisfactory long-term cycling stability (83.87% capacitance retained after 10,000 charge/discharge times), and outstanding flexibility (97% capacitance retained over 200 repeated bends), and the incorporation of ATMP enhanced electrochemical performances of PPAC composite hydrogel electrodes. Besides, the synergistic effects offered by high electrical conductivity of CNTs, pseudocapacitance of PANI, and the doping effect of ATMP may further contribute to the excellent electrochemical behavior of hydrogel electrodes. The result of the energy storage mechanism implied that the electrochemical process of the PPAC composite hydrogel electrode involved both diffusion-controlled and surface capacitive processes. The all-hydrogel-state FSC based on the PPAC hydrogel electrode shows a favorable energy density of 12.8 W h kg–1 at 125.0 W kg–1 as well as long-life stability of 77.31% capacitance retention after 10,000 charge/discharge cycles. This work is promising for the preparation of high-performance composite hydrogel electrodes for wearable and flexible energy storage devices.
研究领域:
材料科学
·
能源存储技术
·
电化学
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DOI
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Xianhong Zheng,Peng Wang,Binbin Ding,Jinhao Tang,Xinghua Hong,Zhi Liu,Wen Xia,Xiaoshuang Zhou,Zongqian Wang,Lihua Zou,Changlong Li
Stretchable electrical conductors hold great promise in the wearable electronic devices, such as flexible display and human-machine interface. Stable conductivity is vital for wearable devices to maintain their stable performance. However, the electrical resistance of most reported yarns dramatically increases when they are deformed. Herein, we propose a design for a coaxial-helix structure by wrapping the polyaniline/MXene-based elastic core-spun yarn on itself in the form of coils. The fabricated coaxial-helix structured yarns (DCSs) exhibit excellent strain-insensitive properties, including low relative resistance change (25.4%), large strain (200%) and high quality factor (17.95). Moreover, the DCSs can be used as the stretchable electrodes for the supercapacitors , and delivers a linear specific capacitance of 256.7 mF cm −1 , which is higher than most stretchable yarns. Therefore, the proposed coaxial-helix structure design creates a new approach for the strain-insensitive stretchable conductor, thereby paving the way for the development of stretchy electronics.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2023
·Vol. 97
·期 4
·714-721
·
IF 0.7
Han Jingliang,Chen Lian,Xu Zhengkai,Zhu Chengfei
Abstract Carbon steel was the most widely used grounding metal material. Polyaniline(PANI)/reduced graphene oxide (rGO) composite coating was prepared on carbon steel to optimize its performance by cyclic voltammetry for the first time in mixed solution of oxalic acid, aniline and rGO in this article. The structure and morphology of polyaniline were characterized by FTIR, XRD, and SEM. The effects of rGO doping on the conductivity and corrosion resistance of polyaniline were studied by polarization curve method and four probe method. The results showed that the PANI/rGO coating was successfully prepared on the surface of carbon steel. The PANI was continuously and densely covered on the surface of rGO as villous to reduce the porosity of the coating and improve the conductivity and corrosion resistance of the coating. The conductivity of the PANI coating increased from 3.33 to 23.05 S/cm after doping 10% rGO. The self-corrosion current density of PANI/rGO composite coated carbon steel in the soil decreased from 1.21 × 10 –3 to 5.19 × 10 –4 A/cm 2 and the corrosion inhibition efficiency was 57.1%.
研究领域:
材料科学
·
电化学
·
防腐蚀工程
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Chang Xu,Shiqiang Guan,Xufeng Dong,Hao Huang,Min Qi
Inherent defects such as poor mechanical strength and low-temperature tolerance have seriously hindered further practical applications of hydrogels in electronic devices. Hence, a polyaniline sandwiched poly(vinyl alcohol)/poly(acrylic acid) (PVA–PAA-PANI) hybrid hydrogel with high strength and ideal low-temperature resistance was constructed by combining the Hofmeister effect and in situ polymerization. This PVA–PAA-PANI hydrogel can provide amazing comprehensive mechanical properties, including 3.5 MPa of breaking strength, 700% of elongation at break, and 11.5 MJ/m3 of toughness, and shows good fatigue resistance. Notably, the hybrid hydrogel-based supercapacitor has a satisfactory specific capacitance of 32.4 mF/cm2 and can withstand 5000 continuous charge/discharge cycles even under harsh cold environments of −20 °C. Moreover, the hybrid hydrogel also exhibits high conductivity and distinct linear sensing behavior, allowing it to accurately monitor various body motions. This work develops new strategies for the preparation of strong hydrogels for electronic devices and promotes their application in real-life applications.
研究领域:
材料科学
·
电子器件
·
生物医学工程
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产品关联
DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Luxin Li,Jiansong Luo,Wenxi Liao,Jiajia Deng,Ting Wang,Yanyan Huang,Jianming Deng,Huang Zhou,Yuxin Yang
Water and energy are indispensable pillars of human civilization, yet both face mounting challenges due to population growth, climate change, and environmental degradation. Enhancing the efficiency of water and energy systems and reducing their environmental impact are thus critical to achieving a low-carbon, water-secure future. This study introduces a novel, scalable and adjustable water-electricity coproduction fabric (PP-WECF) developed via an accessible shuttle-flying weaving technique. The PP-WECF integrates PEDOT:PSS fibers, which serve as a transpiration-driven electrokinetic power generator, with hydrophilic fibers that channel water, and PANI fibers that enable solar-driven steam generation. The integration of PEDOT:PSS fibers and PANI fibers for PP-WECF facilitates sustainable operation and synergistic energy utilization. Furthermore, our results demonstrate that solar illumination of 1 kW·m −2 , the PP-WECF shows an efficient, self-operating, and sustainable output of 1.1 V, 116.0 μA, and 1.6 kg·m −2 ·h −1 in 3.5 wt% NaCl solution. The scalable, prolonged, and adaptable outdoor operation throughout the daytime ensures the clean production of electricity and freshwater.
研究领域:
能源系统
·
海水淡化
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可持续技术
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材料科学
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动电学
·
太阳能
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2015
·
IF 4.513
Wanying Zhu,Guoyi Jiang,Lei Xu,Bingzhi Li,Qizhi Cai,Huijun Jiang,Xuemin Zhou
Based on magnetic field directed self-assembly (MDSA) of the ternary Fe 3 O 4 @PANI/rGO nanocomposites, a facile and controllable molecularly imprinted electrochemical sensor (MIES) was fabricated through a one-step approach for detection of glutathione (GSH). The ternary Fe 3 O 4 @PANI/rGO nanocomposites were obtained by chemical oxidative polymerization and intercalation of Fe 3 O 4 @PANI into the graphene oxide layers via π–π stacking interaction, followed by reduction of graphene oxide in the presence of hydrazine hydrate . In molecular imprinting process, the pre-polymers, including GSH as template molecule, Fe 3 O 4 @PANI/rGO nanocomposites as functional monomers and pyrrole as both cross-linker and co-monomer, was assembled through N–H hydrogen bonds and the electrostatic interaction , and then was rapidly oriented onto the surface of MGCE under the magnetic field induction. Subsequently, the electrochemical GSH sensor was formed by electropolymerization. In this work, the ternary Fe 3 O 4 @PANI/rGO nanocomposites could not only provide available functionalized sites in the matrix to form hydrogen bond and electrostatic interaction with GSH, but also afford a promoting network for electron transfer . Moreover, the biomimetic sensing membrane could be controlled more conveniently and effectively by adjusting the magnetic field strength. The as-prepared controllable sensor showed good stability and reproducibility for the determination of GSH with the detection limit reaching 3 nmol L −1 (S/N = 3). In addition, the highly sensitive and selective biomimetic sensor has been successfully used for the clinical determination of GSH in biological samples.
研究领域:
分析化学
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生物医学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2024
·
IF 12.7
Yong-song Tan,Weiyi Han,You Wu,Dajiang Kuang,Liyang Song,Chaoxia Wang
The development of wearable gesture recognition systems, capable of converting intricate human gestures into electric signals and graphical representations , poses significant challenges for future advancements in health monitoring and human-machine interfaces. In response to this demand, we present an approach centered on a cell-inspired, multiscale hierarchical structural piezoresistive pressure sensor designed for gesture recognition applications. The breathable, hierarchically interlocked textile pressure sensor (PFPA), featuring a SWCNTs/polyvinylpyrrolidone (PVP)/reduced graphene oxide (rGO) dendritic structure combined with a PANI/PVA cylindrical array, exhibits remarkable properties. The dendritic electrodes, composed of SWCNTs and PVP in a 1:2 ratio, maintain optimal regularity. Meanwhile, the cylindrical PANI/PVA array is meticulously engineered with a radius of 200 μm, a height of 200 μm, and an inter-cylindrical spacing of 150 μm. The PFPA demonstrates an unprecedented ultrahigh sensitivity of 80.8 kPa −1 across a pressure range of 0–5 kPa, coupled with a rapid response time of 150 ms and minimal hysteresis of 16.1 %. The PFPA also demonstrates outstanding repeatability, with no significant performance degradation observed after 4000 cycles. By correlating the bending angles of finger joints with resistance changes, we successfully integrated these sensors into a glove, enabling precise gesture recognition. The multilayer SWCNTs/PVP/rGO dendritic and PANI/PVA cylindrical array pressure sensor exhibits superior sensing performance and accurate posture capture. This demonstrates its significant potential for applications in wearable electronics and intelligent devices, marking a substantial advancement in the field.
研究领域:
材料科学
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生物医学工程
·
可穿戴设备
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Biao Chen,Qin Yang,Yuanhaobo Yang,Jia Chen,Bin Yan,Yingchun Gu,Runfang Fu,Sheng Chen
The growing trend towards more intelligent technological products demands greater functional integration. The electrochromic supercapacitor (ECSC), which combines multicolor electrochromic behavior with energy storage, enhances user experience by visualizing the device's energy status. A key challenge for practical applications is to develop scalable, low-cost methods for producing high-performance electrochromic supercapacitors. In this work, we synthesize the polyaniline (PANI) doped with carbon quantum dots, which exhibits excellent capacitive and electrochromic performance, and employ a spray-coating technique to fabricate the working electrode. Coupled with a transparent V 2 O 5 @PEDOT layer as the ion-storage counter electrode, a novel asymmetric solid-state ECSC is assembled. The ECSC demonstrates high energy/power density (51.87 μWcm −2 /4.02 μWhcm −2 –980.41 μWcm −2 /2.914 μWhcm −2 ), fast switching times (t c = 0.75 s, t b = 2.61 s), outstanding coloring efficiency (221.6 cm 2 C −1 ) and cycling stability (over 5000 cycles). The distinct color transitions enable intuitive visual assessment of the device's energy storage level. Moreover, the spray-coating method facilitates large-area and patternable production, offering a promising route for developing next-generation smart and portable multifunctional electronic devices.
研究领域:
材料科学
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能源技术
·
电子工程
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Ling Shi,Zefeng Wang,Xianlan Chen,Guangming Yang,Wei Liu
The synthesis of noble metal nanoparticle with controlled shapes is an attractive goal in developing highly active catalysts. However, constructing high-quality noble metallic nanocatalysts with good electrocatalytic activity remains a huge challenge to date. In this research work, the high-quality polyaniline functionalized graphene nanosheets (PANI/GNS) were prepared by an interfacial polymerization method. The abundant -NH2 groups onto the surface of resulted PANI/GNS nanocomposites, and can be used as active site for growing high load rate of Pd nanoparticles (NPs). Subsequently, Pt NPs were successfully deposited on the Pd surface formed Pt-Pd/PANI/graphene nanosheets (Pt-Pd/PANI/GNS) composites. Interestingly, the shape of Pt-Pd bimetallic can be effectively controlled by simply changing the reaction parameters. The shape and structure of nanocatalysts were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic properties of nanocomposites were characterized by cyclic voltammetry (CV). The TEM images show that the Pt-Pd nanoflowers were successfully decorated onto the surface of PANI/GNS nanocomposites. The electrocatalytic properties for dioxygen and methanol of prepared Pt-Pd/PANI/GNS nanocatalyst were investigated. The electrochemical results show that the nanocatalysts exhibit higher electrocatalytic activity for methanol oxidation and dioxygen reduction.
研究领域:
材料科学
·
能源化学
·
纳米技术
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DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 45
·19315-19323
·
IF 0
Chunli Gong,Fangli Deng,Chi-Pong Tsui,Zhigang Xue,Yun Sheng Ye,Chak-Yin Tang,Xingping Zhou,Xiaolin Xie
The poor electronic conductivity and low lithium ion diffusion rate of a LiFePO4 cathode material are the two major obstacles for its commercial applications in the power lithium ion batteries. This article utilized an electroactive and ion conductive copolymer, polyaniline–poly(ethylene glycol) (PANI–PEG), to modify carbon-LiFePO4 (cLFP) by a facile in situ chemical copolymerization method. The structure and morphology of the cLFP/PANI–PEG composite were confirmed by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Compared with a cLFP/PANI composite, the cLFP/PANI–PEG composite exhibited a more uniform and full polymer coating layer. Furthermore, this cLFP/PANI–PEG cathode material exhibits excellent cyclic stability (95.7% capacity retention after 100 cycles at 0.1 C) and high rate capability (125.3 mA h g−1 at 5 C) as the PANI–PEG copolymer coating layer facilitated electron and ion transport within the electrode. Electrochemical impedance spectroscopy (EIS) proved that the lithium ion diffusion in the cLFP/PANI–PEG composite was increased significantly by one order of magnitude compared with cLFP, indicating its possibility to be served as a cathode material for high-performance lithium ion batteries.
研究领域:
材料科学
·
电化学
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DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Haopeng Cai,Chaochao Feng,Hongbo Xiao,Bo Cheng
Due to the pressing need for electromagnetic interference and radar stealth, microwave absorbers have garnered considerable attention. Through chemical co-precipitation and in-situ polymerization, we synthesize a ternary composite containing reduced graphene oxide , Fe 3 O 4 with flower-like nanostructures , and polyaniline (PANI). To fine-tune the impedance matching and corrosion resistance of composite materials, the conductive PANI was densely coated on the surface of reduced graphene oxide (rGO)/flower-like Fe 3 O 4 (f-Fe 3 O 4 ). The ternary composite exhibits excellent microwave absorption performance. In comparison to rGO/f-Fe 3 O 4 (1:10), which has a minimum reflection loss (RL min ) of −32.81 dB at 10.61 GHz and a 5.15 GHz effective absorption bandwidth (EAB) (7.34–12.49 GHz), rGO/f-Fe 3 O 4 (1:10)@PANI has an RL min of −46.49 dB at 9.93 GHz with a 2.5 mm thickness and an EAB of 4.25 (8.90–13.15 GHz). The results indicate that the addition of the PANI anticorrosion coating layer has no discernible effect on the final microwave absorption performance. This article also examines the effect of rGO weight ratio on microwave absorbing properties. When the rGO content is too high, the impedance will be mismatched, while the too low rGO content will affect the absorbing performance. This research work has contributed to our present understanding of the structure design and composition control of microwave absorbers.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 20
·1562
·
IF 3.2
Guo Sijia,Qin Jianguo,Liu Xiangdong,Yang Chuanhua,Song Baisen,Zhu Yongchang,Li Zizhou
Lightweight broadband microwave absorbers with strong attenuation remain challenging because efficient absorption requires balanced impedance matching and electromagnetic loss over a wide frequency range. Herein, hierarchical core–shell BCN@CoNi@PANI (BCNPa) composites were rationally designed by integrating BCN, CoNi alloy, and conductive PANI. BCN serves as a lightweight dielectric substrate, CoNi provides magnetic loss, and the outer PANI shell regulates dielectric response and conductive loss. The electromagnetic properties of BCNPa can be effectively tuned by adjusting the PANI content. The excellent absorption performance over 2–18 GHz originates from the synergistic effects of impedance matching, dielectric loss, magnetic loss, and hierarchical structural attenuation. Dielectric loss is mainly related to defect-induced dipole polarization, interface-related polarization relaxation, and conductive loss from the π-conjugated PANI shell, while magnetic loss arises from natural resonance, exchange resonance, and eddy current loss of CoNi. Benefiting from optimized dielectric–magnetic balance, BCNPa-2 achieves ultralow minimum reflection loss ( RL min ) of − 81.4 dB at 14.12 GHz and an ultrabroad effective absorption bandwidth ( EAB ) covering nearly the entire measured range. This work provides an effective strategy for high-performance broadband microwave absorbers.
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DOI
高影响因子
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