JOURNAL OF ALLOYS AND COMPOUNDS
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2021
·
IF 5.316
Xiang Luo,Haifeng Li,Dongdong Deng,Lu Zheng,Yubo Wu,Wenjun Luo,Meijie Zhang,Rongzhou Gong
Fe 3 O 4 , as a typical absorber, its electromagnetic wave (EMW) absorption properties are far from meeting the requirements of practical application due to its poor impedance matching. In this study, three kinds of novel heterogeneous structured composites, dendritic Fe 3 O 4 @(HCl doped PANI), Fe 3 O 4 @(p-TSA doped PANI) and Fe 3 O 4 @(dedoped PANI), were prepared via hydrothermal method combined with thermal reduction and in-situ polymerization, and their phase composition, microscopic morphologies, static magnetic properties , EMW absorption performance and absorption mechanisms were investigated. The results showed that the introduction of different medium doped and dedoped PANI greatly enhanced the EMW absorption performance of Fe 3 O 4 . The outstanding advantages of Fe 3 O 4 @(HCl doped PANI) were that the widest effective absorption bandwidth ( EAB ) up to 6.08 GHz in a relatively thin thickness of 2.1 mm. And the Fe 3 O 4 @(dedoped PANI) composite achieved strong absorption ability (− 53.08 dB@3.04 GHz) at low frequency in a relatively thin thickness (4.9 mm). The remarkable improvement of EMW absorption performance of dendritic Fe 3 O 4 @PANI composites could be attributed to the introduction of dissipation mechanisms, the optimization of impedance matching characteristics and the formation of appropriate conductive network microstructure. The dendritic Fe 3 O 4 @PANI composites are promising EMW absorption materials and have great practical application value.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 12
·期 2
·943-949
·
IF 11.9
Yalei Wang,Jun Song,Wai-Yeung Wong
Polyaniline (PANI) hydrogels are promising cathode materials for aqueous zinc-ion batteries (AZIBs) due to their inherent porous structure and redox activity. However, the instability during the repeated charge/discharge process limits their application in commercial battery systems. Herein, PANI/MXene hydrogels are synthesized by grafting the negatively charged MXene with the aniline monomer followed by a rapid chemical oxidative polymerization reaction. After combining MXene nanosheets with the PANI chains, the hybrid hydrogels show a three-dimensional (3D) network structure of MXene nanosheets interconnected with PANI chains through hydrogen bond interactions, thus greatly improving the electrochemical reactivity and stability. Moreover, the 3D PANI/MXene network structure can provide fast transport channels for ions and electrons. Consequently, the PANI/MXene cathodes not only achieve a high capacity of 219.0 mA h g−1 at 0.2 A g−1, but also exhibit outstanding rate performance (147.5 mA h g−1 at 5 A g−1), together with excellent long-term cycling stability (over 5000 cycles with a capacity retention of 88.3%). The Zn2+ and CF3SO3− insertion/extraction mechanisms are further revealed by ex situ X-ray photoelectron spectroscopy (XPS) measurements. This work demonstrates the availability of conducting polymer hydrogels as cathode materials for high-performance AZIBs.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Longjun Guo,Wei Liu,Chunqing Wang
Herein, a twistable and tailorable NH 3 sensor utilizing hollow porous Cu-doped SnO 2 @PANI (PCS) composite was assembled on a flexible non-woven fabric substrate by in-situ polymerization technique and its gas sensing performance was tested at room temperature (∼25 °C). The results indicated that the well-designed PCS sensor to 50 ppm NH 3 exhibited six times higher response (25.4) than the pristine PANI sensor (4.5). The PCS flexible sensor still possessed a response (1.53) for 10 ppb NH 3 , and the detection limit could reach 5.2 ppb for NH 3 . Meanwhile, the PCS flexible sensor demonstrated excellent flexibility with response decreases of only 1.97 % after 1000 times bending (120°), and 2.11 % after 100 times folding (150°) and long-term stability through 42 days of monitoring (maintaining 98.4 % response). Furthermore, the PCS sensor displayed insensitivity to relative humidity (20 % − 75 % RH), and the low sensing temperature could reach − 15 °C. The enhanced sensing performance of the PCS sensor was attributed to the synergistic effect of the vital role of abundant oxygen vacancy and − OH groups, as well as the hollow porous interconnected structure and the p-n heterojunction between Cu-doped SnO 2 and PANI. This work provides more opportunities to design smart wearable devices for detecting ppb-level NH 3 at room temperature.
研究领域:
材料科学
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化学传感
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纳米技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Boyang Zhou,Zhifang Li,Deyu Qin,Qian Zhang,Miao Yu,Changlong Yang
Polyaniline (PANI) has been widely studied because of its unique physicochemical properties, but its practical significance in supercapacitors is seriously affected by its structural collapse during charging and discharging. We have successfully synthesized transition metal oxide/carbon-polyaniline composite electrode materials by in situ growth of polyaniline using the electrodeposition method with a metal-organic skeleton as a sacrificial template. This method not only can obtain high capacitance materials but also carbon materials provide buffer space during long-term charge/discharge to improve the overall stability. ZnCoO x /C-PANI-3 has a smaller charge transfer resistance and solution resistance compared to other materials, indicating that the interfacial coupling between PANI and ZnCoO x /C shortens the ion transport path between electrolyte and electrode surface, which is beneficial for rapid ion transfer and thus enhances its electrochemical performance. ZnCoO x /C-PANI-3 as an electrode material in the three-electrode system, has remarkable specific capacitance (1055 F . g −1 at a current density of 1 A . g −1 ) and good cycling stability (85.7% capacitance retention after 10,000 cycles of charge and discharge at high current density). Similarly, the asymmetric supercapacitor (ZnCoO x /C-PANI-3//AC) assembled with ZnCoO x /C-PANI-3 as the positive electrode material and activated carbon as the negative electrode material has a maximum energy density of 42.77 Wh . kg −1 at a power density of 705 W . kg −1 and a remarkable cycle life with a capacitance retention rate of 80% after 5000 cycles. This research opens up new avenues for studying polyaniline/MOF derivatives (transition metal oxide-carbon) composites.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
DESALINATION
·
2025
·
IF 9.8
Jiadi Ying,Zhen Cui,Tiancun Liu,Song Lu,Qi Shen,Min Guo,Yeqing Wang,Zhen Yang,Minfeng Zeng,Zhixin Yu,Yuqing Lin
The development of thin, charge-selective surface layers on cation exchange membranes (CEMs) is crucial for advancing electrodialysis technology, particularly for achieving both high ion permeability and precise selectivity. In this study, we developed an innovative approach to fabricate ultrathin polyaniline (PANI) nanolayers on CEM substrates through pre-adsorption of protonated aniline monomers followed by in-situ polymerization. The resulting membranes feature a uniform Turing-type nanostructure through FESEM characterizations, which significantly enhances surface positive charge density. Our optimized membrane demonstrates exceptional performance, achieving a Li + /Mg 2+ selectivity of 6.75 while maintaining a high lithium permeation rate of 0.18 mmol·cm −2 ·h −1 . These results compare favorably with current state-of-the-art permselective membranes and surpass the commercial membrane CSO (5.26 for the Li + /Mg 2+ selectivity and 0.16 mmol·cm −2 ·h −1 for the lithium permeation rate). Mechanistic studies including electrochemical impedance spectroscopy and molecule dynamics simulation reveal that PANI layers with optimal thickness and pore structure minimize resistance to monovalent cations while effectively blocking divalent cations, enabling efficient ion separation during electrodialysis. This work highlights the remarkable potential of nanostructured PANI layers for selective ion transport and provides a practical strategy for designing advanced electrodialysis membranes. The simple fabrication method and outstanding performance characteristics make this approach particularly promising for lithium extraction and other ion separation applications.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 2
·020513
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IF 4.316
Xiaowan Zhan,Qin Yin,Weiquan Mai,Yining Wang,Antonio F. A. A. Melo,Kuan Jiang,Hongbing Jia,Qingmin Ji
As the key material for flexible electronics, free-standing supercapacitor electrodes have attracted great research interests in recent years. However, constructing the novel supercapacitor electrodes with excellent mechanical properties and high areal capacitance remains a challenge. This study demonstrates the fabrication of a highly flexible and mechanically robust supercapacitor electrode based on combination of aramid nanofibers (ANFs), multi-walled carbon nanotubes (MWCNTs), and polyaniline (PANI) in form of nanostructured composite film. The ANFs/MWCNTs/PANI film electrode obtained via vacuum-assisted layer-by-layer (VA-LBL) assembly technique achieves a tensile strength of 158.7 MPa and an areal specific capacitance of 497.3 mF cm−2 at a current density of 0.25 mA cm−2, showing an outstanding compatibility between high electrochemical performance and superior mechanical properties. In addition, the ANFs/MWCNTs/PANI film electrode exhibits an excellent cycle life with 89% capacitance retention after 3000 cycles. Synergistic effect from the strategic assembly of ANFs, MWCNTs and PANI in form of a single nanostructured platform makes this kind of free-standing electrode applicable for flexible and solid-state energy storage systems.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 11
·8329-8338
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IF 2.019
Xing Honglong,Shen Ziyao,Wang Lei,Zhu Yanting,Ji Xiaoli
α-Fe 2 O 3 /SnO 2 @polyaniline composites were prepared by combining a hydrothermal reaction and an emulsion polymerization process. The sizes of α-Fe 2 O 3 and SnO 2 particles dispersed into PANI were 80–120 and 8 nm, respectively. The structure, morphology, and electromagnetic (EM) parameters were characterized by using X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and vector network analysis. To achieve the absorption of different EM bands, the EM wave absorption properties of α-Fe 2 O 3 /SnO 2 @PANI composites with different stannic oxide content were investigated according to transmission line theory. Polarizations and multiple reflections in the composite absorber play a key role in EM wave absorption. The α-Fe 2 O 3 /SnO 2 @PANI composites exhibited high EM absorption capacity and an optimal reflection loss of −50.3 dB at 9.9 GHz with thickness of 2.7 mm. Moreover, the composite could reach an effective absorption bandwidth (below −10 dB) from 7.84 to 12.08 GHz. Thus, the synthesized composites are suitable candidates for highly efficient EM wave absorption in the entire X-band.
研究领域:
材料科学
·
电磁学
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 3
·1-13
·
IF 2.6
Li Shuo,Tao Yulun,Wu Yuannan,zhu Shanshan,Khademi Sara,lv Yinru,Tai Yanlong,Wang Chaoran
The high integration and multifunctionality in flexible electronic device play an important role in its development. In this study, we developed multifunctional hydrogels integrated with supercapacitive, photoelectric, and strain-sensing capabilities. The hydrogel composite consists of PAM/PVA matrix with polyaniline (PANI) and reduced graphene oxide (rGO) as conductive components. Two different acid dopants, citric acid (CA) and hydrochloric acid (HCl), were employed to investigate their impact on photoelectrochemical capabilities of hydrogels. Both CA-doped and HCl-doped hydrogels exhibited remarkable supercapacitive performance, achieving areal capacitances of 492 mF/cm 2 and 538 mF/cm 2 , respectively. Furthermore, both hydrogels demonstrated photosensitivity towards shorter wavelengths such as ultraviolet (380 nm) and blue (475 nm) light. Lastly, the proposed hydrogels serving as highly sensitive strain sensors was verified through effectively sensing arm bending movements.
研究领域:
材料科学
·
电化学
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光电子学
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传感器
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纳米技术
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DOI
高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 8
·4058-4066
·
IF 8.867
Jian Zhang,Jie Han,Minggui Wang,Rong Guo
Multifunctional magnetic adsorbents containing MnO2 and polyaniline (PANI) with optimized adsorption properties toward heavy metal ions have been developed. In particular, Fe3O4 spheres were chosen as the magnetic core, followed by PANI and MnO2 coating, realizing the formation of Fe3O4/PANI/MnO2 core–shell hybrids. The as-synthesized Fe3O4/PANI/MnO2 core–shell hybrids showed a hierarchical structure with a large surface area and high magnetic saturation value. In comparison with Fe3O4/PANI and Fe3O4/MnO2 core–shell hybrids, Fe3O4/PANI/MnO2 core–shell hybrids displayed the highest adsorption capacity toward heavy metal ions (including Cd(II), Zn(II), Pb(II) and Cu(II)), thanks to the integrated physical and chemical adsorption behaviors resulting from MnO2 inorganic oxide and the PANI polymer. The developed multifunctional Fe3O4/PANI/MnO2 adsorbents synthesized by a facile and economic route are believed to show high potential in environmental remediation for heavy metal removal.
研究领域:
环境科学
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材料化学
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纳米技术
·
水处理
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Chaoyu Liu,Ying Li,Yushi Ding,Xiaocong Zhu,Shiyu Yuan,Yongtao Huang,Chuanbo Hu
To address the challenge of insufficient long-term protective performance in waterborne epoxy coatings (WEP) due to curing defects, this study successfully synthesized a ternary nanocomposite filler, BTA@OH-BN/PANI (BTP), through a chemical oxidation polymerization process. Hydroxylated hexagonal boron nitride (OH-BN) was employed as a functional scaffold, onto which the corrosion inhibitor benzotriazole (BTA) was loaded via a solution impregnation method. Camphorsulfonic acid-doped polyaniline (CSA-PANI) was then coated onto the surface using in situ polymerization. FT-IR, XPS, and FE-SEM characterization confirmed strong interfacial coupling between the components and the successful formation of the core-shell structure. Electrochemical impedance spectroscopy (EIS) results revealed that the BTP filler significantly improves coating performance through a multidimensional synergistic effect, including physical shielding, active repair, and interfacial passivation. At the scratch defect site, due to the responsive release of BTA and the passivation induced by PANI, the charge transfer resistance ( R ct ) increased from an initial value of 13,200 Ω·cm 2 to 25,600 Ω·cm 2 within 24 h, demonstrating significant active impedance recovery. After a 90-day immersion in a 3.5% NaCl solution, the BTP-WEP substrate retained its bright metallic lustre. This study provides a solid theoretical and experimental foundation for the development of high-performance, synergistic active, and environmentally friendly marine anti-corrosion coatings.
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高影响因子
Advanced Science
·
2026
·
IF 14.1
Dongmei Xie,Mengran Chen,Xuefei Zhang,Yan Xu,Weiye Geng,Zhe Tang,Si-ze Lou,Shun Wan,Zhenguo Liu,Heng Liu,Peng-an Zong
Micrometer-scale chemical sensors serve as pivotal functional components that bridge microscopic environments and macroscopic information systems, yet integrating multiple sensing modalities within a single microscale fiber without compromising performance remains a challenge in materials design. Herein, we report a continuous wet-spinning process to fabricate multifunctional microfibers that integrate chemically responsive polyaniline (PANI) with high-Seebeck-coefficient tellurium nanowires (TeNWs). The optimized PANI/TeNWs composite fiber (60 wt.% TeNWs) achieves a Seebeck coefficient of 59.9 µV K −1 and a power factor of 9.2 µW m −1 K −2 , enabling passive temperature monitoring with a detection limit of 1 K, where thermal gradients directly generate the sensing signal. Simultaneously, the fiber demonstrates remarkable chemical sensing capabilities, exhibiting a Nernstian pH response (59.25 mV pH −1 ) and rapid ammonia detection (0.96 s at 50 ppm). By demonstrating both passive thermoelectric transduction and active chemical sensing in a single microfiber platform, this work establishes a versatile material system that combines energy-autonomous temperature sensing with high-performance chemical detection. This integrated approach offers substantial application prospects in precision medicine and environmental safety monitoring, where miniaturized sensors with diverse functionalities are urgently needed.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Cong Liu,Shifang Ye,Wenyan Yang,Shixiang Zhou,Jiading Zhu,Jiantao Cai,Zhe Xin,Peizhong Feng,Litong Guo,Shiwang Ye,Zhen Wu,Jun Ding,Xueyu Tao
Conductive polymer hydrogels for flexible supercapacitors usually contain nonconductive matrices (e.g., PVA, PAM), which hinder the electrochemical performance. This work presents a matrix-free strategy via supramolecular self-assembly, utilizing HEDP as a dual-functional dopant/cross-linker and lignosulfonate (LS) as a redox-active template. The incorporation of LS optimizes the nanostructure for faster ion transport while simultaneously contributing additional pseudocapacitance via quinone/hydroquinone redox couples. This supramolecularly assembled PANI/HEDP/LS (PHL) hydrogel demonstrates significant electrochemical advantages. At 0.5 A g–1, the PHL9 hydrogel electrode delivered a specific capacitance of 625 F g–1, exceeding that of the original PHL0 hydrogel without redox additives (419 F g–1). The PHL9 hydrogel electrode also exhibited an electrical conductivity of 86.51 S m–1, while maintaining stable cycling performance after 10,000 charge/discharge cycles (76.51% retention) and good flexibility, as 92.64% of the capacitance was still preserved after 200 bending cycles. All-hydrogel-state flexible supercapacitors (FSCs) constructed with PHL9 composite hydrogel electrodes delivered an energy density of 22.5 Wh kg–1 at a power density of 125 W kg–1, surpassing that of PHL0-based FSCs (16.2 Wh kg–1). Moreover, the device further maintained 80.75% of its initial capacitance after 10,000 charge/discharge cycles, indicating reliable long-term stability. Overall, these results indicate that the proposed strategy provides an effective route for developing high-performance composite hydrogel electrodes in wearable and flexible energy storage applications.
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DOI
PubMed
高影响因子
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