POLYMER
·
2026
·
IF 5.1
Huixiang Wang,Xinchao Yang,Jing Wang,Ya Lu
Flexible supercapacitors have emerged as promising energy storage devices, owing to their high power density and long cycle life. However, the development of electrode materials with high specific capacitance, superior electrochemical and mechanical stability remains a critical challenge. In this work, we report a facile strategy for fabricating cellulose nanofiber (CNF)-carbon nanotube (CNT)@polyaniline (PANI) nanocomposite aerogels via TEMPO oxidation, freeze-drying, and in-situ polymerization. The CNFs serve as a dispersive scaffold to uniformly distribute CNTs, forming a three-dimensional (3D) interconnected network, while PANI coats the CNF-CNT hybrid to construct a core-shell structure, enhancing pseudocapacitive performance. The resulting CNF-CNT@PANI aerogel exhibits a hierarchical porous structure with a high specific surface area of 121.4 m 2 g -1 and low density of 12.8 mg cm -3 . The assembled flexible supercapacitors deliver a high areal specific capacitance of 722.4 mF cm -2 at 2 mA cm -2 , long-term capacitive cyclic stability (86% capacitance retention after 3000 cycles), and remarkable mechanical stability (95.2% capacitance retention after 200 bending cycles). Additionally, the device achieves a maximum areal energy density of 99.5 μWh cm -2 at a power density of 1005.4 μW cm -2 , outperforming many reported PANI-based supercapacitors. This work provides a feasible approach for designing high-performance flexible electrode materials for next-generation energy storage systems.
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高影响因子
ChemNanoMat
·
2026
·Vol. 12
·期 1
·e202500720
·
IF 2.6
Xinbing Jiang,Xingyu Jin,Zizhuo Nie,Wenyu Cheng,Yuxi Fei,Bo Peng,Yuhang Liu,Jiuhong Wang,Libo Zhao,Shujiang Ding
Room-temperature ammonia (NH 3 ) detection is crucial for environmental safety and human health. In this study, a ternary PANI@Au-TiO 2 ammonia-sensitive composite was synthesized via in situ polymerization of polyaniline (PANI) with simultaneous reduction of chloroauric acid to form Au nanoparticles, followed by ultrasonic compounding with TiO 2 nanoparticles. The structural and morphological characterization confirmed the uniform distribution of Au and TiO 2 nanoparticles in the PANI matrix. Gas sensing experiments demonstrated that the PANI@Au-TiO 2 sensor exhibited markedly enhanced NH 3 response, achieving a high sensitivity of 0.0527/ppm compared to PANI, PANI@Au, and PANI-TiO 2 counterparts. Moreover, the PANI@Au-TiO 2 ternary composite sensor displayed excellent linearity within the NH 3 concentration range of 3–30 ppm, along with a low detection limit, good repeatability, and high selectivity toward ammonia. The enhanced performance is attributed to the synergistic effects of the p–n heterojunction, Schottky junction, and catalytic activity of Au nanoparticles, which facilitate efficient charge transfer and amplify the interaction with NH 3 molecules. These findings demonstrate that the hybrid sensing film based on PANI@Au-TiO 2 ternary composites exhibits excellent ammonia detection performance at room temperature, thereby offering a promising pathway for the development of advanced ammonia sensors.
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ANALYST
·
2017
·Vol. 142
·期 14
·2587-2594
·
IF 3.885
Lina Zhang,Yanhu Wang,Lei Shen,Jinghua Yu,Shenguang Ge,Mei Yan
In this study, hyperbranched polyethyleneimine-protected silver nanoclusters (hPEI-AgNCs) with excellent electrochemiluminescence (ECL) emission in the presence of coreactant K2S2O8 were prepared by chemical reduction of silver ions (silver nitrate) coordinated with dendrigraft polymer, and successfully used for the construction of an ECL immunosensor. Polyaniline (PANI)/polypyrrole (PPy)-silver (Ag) dendrites with good electrical conductivity and biocompatibility were electropolymerized on the surface of indium tin oxide (ITO) electrode as carriers. Porous ZnO sphere-loaded hPEI-AgNCs-induced signal amplification strategies were integrated exquisitely and applied sufficiently. Taking carcinoembryonic antigen (CEA) as an example, under optimal conditions, the CEA concentration was determined to be in the range of 10−3 ng mL−1–100 ng mL−1 and with a detection limit of 0.4 pg mL−1 using this method; it exhibited excellent selectivity, high stability, and acceptable fabrication reproducibility. It was anticipated that hPEI-AgNCs would have promising applications in green, selective, and sensitive detection of target analytes in the future.
研究领域:
分析化学
·
生物传感
·
纳米医学
·
肿瘤学
·
免疫学
·
转化医学
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高影响因子
JOURNAL OF POLYMER RESEARCH
·
2018
·Vol. 25
·期 7
·1-14
·
IF 1.434
Yuan Ruixia,Liu Hui,Yu Peng,Wang Huaiyuan,Liu Jincheng
Traditional insulative coatings usually suffer from pitting corrosion in harsh corrosive environment. Herein, in this work, electroactive polyaniline/carboxylated carbon nanofiber (PANI/CNF) nanocomposite was prepared via in situ chemical polymerization and first incorporated into superhydrophobic coating with better barrier effect. Multilayer coatings were constructed by facial spraying using polyphenylene sulfide (PPS) and ethylene tetrafluoroethylene (ETFE) with gradient weight ratios as film-forming materials. The composite coating with 40 wt% ETFE in top layer (denoted as ETFE-40) possesses best superhydrophobicity and highest oleophobicity with water contact angle (CA) and glycerol CA of 160° and 155° as well as low water sliding angle (SA) and glycerol SA of 2.2° and 8.8°, respectively. The lotus-like nano/micro structures, low surface energy material ETFE and modification of 1H,1H,2H,2H -perfluorooctyltriethoxysilane (POTS) should contribute to the superior liquid repellency. Especially, robust mechanical strength and durable anti-wettability are obtained with high WCA of 151° and glycerol CA of 147° after 8000 cycles abrasion. The composite coating also exhibits strong adhesion and superior self-cleaning. The enhanced electrochemical corrosion resistance of the coating in 3.5 wt% NaCl solution can be attributed to the outstanding barrier function of superhydrophobic surface and the passivation effect of electroactive PANI/CNF. This novel and effective coating system would definitely benefit the development of robust protective coating and promise wider engineering application.
研究领域:
材料科学
·
纳米技术
·
表面工程
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电化学
·
防护涂层
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Siqi Hong,Baoxi Fan,Zheng Wu,Xiaoyue Cheng,He Gao,Yanmin Jia,Cheng Liu,Luohong Zhang
Piezoelectric catalysis has emerged as a sustainable technology for pollutant degradation, with barium titanate (BTO) serving as a prominent lead-free piezoelectric material. However, its practical application remains constrained by limited degradation efficiency. To address these challenges, polyaniline-incorporated BTO nanocomposites (BTO@PANI) were synthesized via in-situ polymerization to enhance piezoelectric polarization and catalytic performance. The composites were evaluated for degrading dyes and pharmaceuticals under both ultrasonic and aeration-driven conditions, with systematic investigation of influencing factors including pH, catalyst dosage, aeration rate, and bubble size. The optimized BTO@PANI 0.2 composite exhibited exceptional catalytic activity, achieving a 57 % enhancement in degradation efficiency and a reaction rate constant (k = 0.0218 min⁻¹) 15.7 times greater than pure BTO under ultrasonic excitation. The aeration-driven process used only 23.3 % of the energy that ultrasonication did, which is very impressive. The composite maintained excellent stability through four consecutive degradation cycles under both excitation modes. The catalytic mechanism was systematically investigated through radical trapping experiments, electron paramagnetic resonance (EPR) analysis, and comprehensive material characterization (XRD, SEM, FTIR, XPS, EIS). This work provides new idea for designing efficient piezoelectric catalysts and demonstrates a promising energy-saving strategy for advanced oxidation processes in water treatment.
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Gels
·
2026
·Vol. 12
·期 5
·358
·
IF 6.4
Yuxuan Chen,Chubin He,Xiuru Xu
Conductive hydrogels are attractive for flexible electronics, but their practical use is often limited by resistance drift during repeated deformation and performance degradation at low temperatures. Here, core–shell polyaniline-coated polyacrylonitrile (PANi@PAN) electrospun nanofibers were incorporated into a polyacrylamide/hydroxypropyl cellulose (PAM/HPC) hydrogel matrix to construct a hybrid conductive network. The PANi shell serves as an electronic pathway alongside ionic conduction in the hydrated polymer network, leading to markedly improved electromechanical stability. The resistance drift is about 11% after 2000 stretching–relaxation cycles at 0–100% strain, about 12 times lower than that of the nanofiber-free hydrogel. Stable electrical responses are maintained under large deformation, with a resistance drift as low as 3.3% over a strain range of 0–400%. The hydrogels show a conductivity of 0.32 S m−1while retaining high stretchability (>600%). An ethylene glycol/water binary solvent is used to suppress ice formation and improve moisture retention, allowing stable electromechanical performance at −15 °C over 500 cycles. The hydrogel also adheres reliably to human skin (about 10.25 kPa) and functions as a conformal strain sensor without extra fixation.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yuanye Pan,Xinyu Li,Haiyan Liu,HanChi Shi,Jiayao Du,Yan Lv,Xinyue Wu,Jinghan Li,Shuangqing Fan,Minghui Cao,Siqi Li,Tong Liu
In-situ TiO 2 @Ti 3 C 2 T x /PANI composite for NH 3 sensing. • High response of 319% toward 50 ppm NH 3 achieved. • Detection range expanded to 0.3–1000 ppm. • Stable performance under 40–90% RH and mechanical bending. • Enables real-time NH 3 monitoring for fertilizer management. The utilization rate of nitrogen fertilizer and the determination of its effective period depend heavily on the dynamics of ammonia(NH 3 ) volatilization. Therefore, monitoring NH 3 emissions during fertilization is important for understanding nitrogen loss behavior in agricultural systems. However, developing sensors that maintain high response and stability in complex field environments remains a challenge. To address this, leveraging the high conductivity and abundant surface functional groups of Ti 3 C 2 T x to enhance gas adsorption and carrier transport, a flexible room-temperature NH 3 sensor based on TiO 2 @Ti 3 C 2 T x /PANI(TTP-20) composite was constructed. Attributed to the synergistic Schottky junction formed at the interface and the optimized mesoporous structure, the sensor exhibits a high response of 319% to 50 ppm NH 3 and lowest tested concentration of 0.3 ppm. Crucially, the sensor demonstrates good immunity to humidity interference (RH = 40–90%), ensuring robust reliability in moist soil environments. It successfully identified NH 3 release patterns under simulated fertilization conditions, providing a promising approach for tracking NH 3 emission trends under simulated fertilization conditions and supporting the comparative evaluation of fertilization strategies. Download: Download high-res image (365KB) Download: Download full-size image
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Ma SongYuChen,Li YinHui,Di Yang,Liu Tao,Wang DeQi,Shi WenJing,Ling ZhiGang,Li FengSheng,Liu Jie
To enhance the safety performance and thermal stability of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexazepane (CL-20), a core–shell composite was synthesized via in situ polymerization of aniline on polyethyleneimine (PEI)-modified CL-20. PEI modification introduced –NH 2 groups onto CL-20 surface, providing active sites for aniline polymerization and inhibiting its self-polymerization, thus forming dense polyaniline (PANI) shells with uniform thickness (about 2.8 mass%) while maintaining the high-energy crystal structure of CL-20. Compared to pure CL-20, CL-20-P@PANI showed a 15.8 °C increase in phase transition temperature (185.5 °C) and a 4 °C rise in thermal decomposition temperature (247.21 °C), attributed to the thermal barrier effect of PANI shells. The results of the mechanical sensitivity test indicate that the dense polyaniline shell layer effectively dissipates external forces, leading to a 51.43% reduction in impact sensitivity and a 20% decrease in friction sensitivity. This study provides a novel modification approach for high-energy materials by combining PEI-mediated interface engineering with in situ polymerization, ensuring both safety and energy characteristics. Graphic abstract
研究领域:
含能材料
·
材料科学
·
高分子化学
·
热工学
·
安全工程
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Lu Yao,Tian Yu,Hong Bo,Xu Jingcai,Peng Xiaoling,Li Jing,Chen Hongwei,Qiu Shi,Zhang Nan,Wang Xinqing
Interface polarization and conduction loss constitutes a crucial loss mechanism in electromagnetic wave absorption (EWA) materials, the dissipation capacity could be enhanced by regulating the electrical conductivity and heterogeneous interfaces of EWA composites. In this work, the hollow CoFe 2 O 4 microspheres are fabricated using the hydrothermal method and are subsequently compounded with polyaniline (PANI) through mechanical mixing to synthesize hollow CoFe 2 O 4 @PANI (H-CFP) composites. By adjusting the PANI content and thereby altering the interfaces of CoFe 2 O 4 and PANI, the impact on the microstructures and EWA performance is systematically analyzed for the H-CFP composites. All results indicate that the CoFe 2 O 4 microspheres are well-dispersed on PANI and greatly affect the EWA performance of the H-CFP composites. The optimized H-CFP-4 displays the outstanding EWA capacity with a minimum reflection loss (RL min ) of − 43.60 dB and an effective absorption bandwidth (EAB) of 1.71 GHz at 5.5 mm. Additionally, the superior performance of the H-CFP composites in the domain of radar stealth is further verified through CST simulation. The excellent EWA behavior is attributed to the interface polarization, conduction loss and impedance matching due to the synergistic effect of conductive PANI and magnetic CoFe 2 O 4 microspheres. This study offers a novel concept for designing high-performance EWA materials suitable for complex electromagnetic environments and possesses broad application prospects.
研究领域:
材料科学
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电磁学
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纳米技术
·
应用物理学
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SENSORS AND ACTUATORS A-PHYSICAL
·
2022
·
IF 4.291
Fan Jin,Dawu Lv,Wenfeng Shen,Weijie Song,Ruiqin Tan
Intelligent flexible strain sensors based on fabric have caused tremendous attention in the application of wearable devices because of their lightweight and excellent air permeability . It is still a great challenge to achieve excellent stability, high sensitivity, and wide working range. In this work, a high-performance strain sensor with reduced graphene oxide (rGO) reinforced polyaniline (PANI) based on polydopamine (PDA) modified Lycra cotton (LC) electronic textile (e-textile) was fabricated. The strain sensor of PANI/rGO/PDA/LC exhibits high sensitivity with a gauge factor (GF) of 24, a wide strain range of 0.2–50%, and excellent mechanical durability and stability for 1500 stretching/releasing cycles test. Such e-textile is promising to be integrated with other wearable devices to track human motion signals in real-time for human-machine and medical monitoring.
研究领域:
材料科学
·
生物医学工程
·
可穿戴设备
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Dianwei Liu,Pengfei Yan,Wei Liu,Qun Xu,Buxing Han
Developing high-efficiency electromagnetic wave (EMW) absorbers for the low frequency (1–8 GHz) remains a formidable challenge, primarily due to the inherent conflict between thickness reduction and impedance matching at longer wavelengths. Herein, we propose a supercritical CO 2 (SC CO 2 ) fluid-assisted interfacial engineering strategy to construct a hierarchical “core-shell-satellite” carbon nanotube/polyaniline/nickel (CNT/PANI/Ni) ternary composite. Unlike conventional liquid-phase methods that suffer from phase agglomeration, the gas-like diffusivity and negligible surface tension of SC CO 2 facilitate the uniform encapsulation of PANI on CNTs and the atomic-scale anchoring of Ni nanoparticles via robust Ni-N coordination bonds. This unique architecture effectively moderates the conductivity of the CNT network to optimize impedance matching, while the abundant heterogeneous interfaces (CNT/PANI and PANI/Ni) induce significant Maxwell-Wagner-Sillars (MWS) polarization and dipole relaxation losses. Consequently, the optimized CNT/PANI/Ni composite exhibits exceptional low-frequency absorption performance, achieving a minimum reflection loss (RL min ) of −57.11 dB at 6.47 GHz with a matching thickness of only 3.5 mm, overcoming the “thickness bottleneck” of low-frequency absorbers. This work not only provides a scalable route for fabricating heterogeneous composites but also unravels the mechanism of SC CO 2 -induced interfacial synergy, offering a robust solution for anti-interference in 5G and satellite communications.
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高影响因子
Small
·
2026
·
IF 11.8
Longlong Qin,Liang Liu,Shengxiang Huang,Xiaohui Gao,Lianwen Deng
Construction of acid-doped polyaniline films with excellent dual-band modulation ability remains extremely challenging. Herein, graphene quantum dots (GQDs) and p-toluenesulfonic acid ( p TSA) are co-doped in electrodeposited polyaniline (PANI) films, transforming the compact PANI layer into an interconnected porous network. The reconstructed morphology facilitates electrolyte accessibility and shortens ion-transport pathways, while the interfacial interactions among GQDs, p TSA, and PANI promote localized charge redistribution and charge transport. These synergistic morphological and electronic effects contribute to accelerated electrochemical kinetics and enhanced electrochromic performance. The optimized film exhibits a maximum optical contrast (ΔT) of 47.6% at 667 nm and a high coloration efficiency of 203.2 cm 2 C −1 in the potential range from −0.2 to +0.3 V. Meanwhile, a broad infrared emissivity modulation range (Δε) and a maximum temperature tunable range was obtained as 0.71°C and ±8°C, respectively. Furthermore, an interpretable machine-learning framework integrating composition, morphology, and transport descriptors was established for multi-property prediction and composition screening, with its predictive capability further evaluated by independent blind validation. The results reported in this work provide an effective strategy and concept for advanced electrochromic materials toward applications in smart windows and adaptive thermal management systems.
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