Materials
·
2025
·Vol. 18
·期 12
·2836
·
IF 3.2
Yi Wang,Ze Wang,Zilong Zhang,Yujie Yan,An Xie,Tong Feng,Chunyang Jia
Electrochromic supercapacitors (ECSCs), which visually indicate their operating status through color changes, have attracted considerable attention in the field of wearable electronics. The conductive polymer polyaniline (PANI) shows great potential for integrated intelligent devices by combining bi-functional electrochromic spectral modulation and energy storage capabilities. In this work, a microsphere-like structured PANI-based composite film was fabricated on a porous Au/nylon 66 electrode via a one-step electrochemical copolymerization process, using 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt (PTSA) as both the dopant and cross-linking agent for the PANI backbone, serving as the ECSC electrode. Compared to the pristine PANI electrode, the PANI-PTSA composite film exhibits lower intrinsic resistance and higher electrical conductivity, delivering a higher specific capacitance of 310.0 F g⁻1@1 A g⁻1and an areal capacitance of 340.0 mF cm⁻2@1 mA cm⁻2, respectively. The dopant facilitates enhanced electrochemical performance by promoting charge transport within the PANI polymer network. Meanwhile, as a counter anion to the PANI backbone, PTSA regulates the growth of PANI chains and acts as a morphological controller. Furthermore, a symmetric ECSC based on the PANI-PTSA8:1electrode was assembled, and its electrochemical properties were thoroughly investigated. The device demonstrated a high specific capacitance of 169.2 mF cm⁻2at 1 mA cm⁻2, a notable energy density of 23.5 μWh cm⁻2at a power density of 0.5 mW cm⁻2, and excellent cycling stability with 79% capacitance retention after 3000 cycles at a current density of 5 mA cm⁻2, alongside remarkable mechanical flexibility. Additionally, the working status of the ECSCs can be directly monitored through reversible color changes from yellow-green to deep blue during charge–discharge processes.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Min Liu,Xue-Ting Jin,Si-Wei Sun,Cheng Xue,Jie Zhao,Yang-Hui Luo
Solar-driven water-electricity cogeneration has been considered as a promising technology to alleviate the freshwater-energy scarcity crisis. However, energy confinement on the evaporator surface remains challenging owing to unavoidable thermal losses to the bulk water, which leads to diminished water evaporation efficiency and reduced power output. Herein, a duckweed-inspired water-electricity cogeneration evaporator (d-WECE) with multimode water pathways is developed. Consisting of the arterial and multibranched channels, d-WECE exhibits low thermal conductivity and regulated water flow for high-efficiency desalination and electricity output. Experiments and numerical simulations reveal that the integrated water channels have a synergistic effect on thermal concentration and flow regulation, ensuring continuous water supply while minimizing heat losses, thereby delivering more energy to the evaporating surface. Consequently, an excellent evaporation rate of 2.42 kg m −2 h −1 and a high energy efficiency of 96.7%, under one-sun irradiation in seawater without salt deposition, have been achieved, accompanied by outstanding voltage (520 mV) and current (45 μA) output. More importantly, d-WECE can also maintain efficient and sustainable evaporation for the clean production of freshwater-electricity in outdoor operation. This work is expected to provide a viable route to design high performance solar-driven evaporators for the cogeneration of water and electricity.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Qingda Du,Yinglong Zhang,Jiajing Tang,Wei Fang,Xiaoyu Lei,Jinzheng Zhang,Bo Mu,Yuping Li,Yi Zuo,Yubao Li
Inspired by the pH fluctuations of skin wounds, a protonic acid-doped conductive polyurethane (dCP) fibrous membrane was developed via electrospinning. This study introduces a smart conductive system with pH-responsive electroactivity that adapts to the dynamic wound microenvironment, enhancing both wound healing and antibacterial efficacy. Systematic optimization with camphorsulfonic acid (CSA) doping, the system was evaluated under three physiological pH conditions (7.4, 6.7, and 7.9), representing different healing stages. FTIR spectroscopy, cyclic voltammetry, and conductivity measurements confirmed that dynamic electroactivity and pH-responsive behavior originate from protonation/deprotonation-mediated interactions between conductive components and microenvironmental pH. The CSA-doped membranes exhibit stable conductivity (4.72–9.48 × 10–4 S/cm) and strong antibacterial activity (>98% efficacy against Staphylococcus aureus, per ISO standards) under various pH levels, with conductivity values approaching those of native skin. Under alkaline condition (pH 7.9), the CSA-doped membranes achieve higher sensitivity and conductivity, showing 1.32-fold and 1.13-fold increases compared to neutral (pH 7.4) and acidic (pH 6.7), respectively. At pH 6.7, the dCP membrane significantly promotes M1-to-M2 macrophage polarization in vitro, confirmed by CD206/iNOS immunofluorescence staining and quantitative RT-PCR analysis. In wound treatment applications, the pH-adaptive dCP dressings synergistically improve inflammation suppression, angiogenesis, nerve regeneration, and collagen remodeling while minimizing scar formation, as evidenced by histological and immunohistochemical analyses (H&E, Masson’s trichrome, VEGF, NGF, and TGF-β) in a rat model. This pH-adaptive CSA-doped conductive dressing design offers a self-regulating, multitasking strategy for advanced wound healing, effectively addressing the limitations of traditional static dressings.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 6
·e70234
·
IF 3.4
Bo Liu,Zhigang Yuan,Caizhao Liu,Mehdi Derradji,Mingming Sun,Xugang Zhang,Bin Zhang,Lei Wang,Jianhui Li,Tianyi Xie,Jinzi Li,Gang Xue,Ming Zhao,Xue Zhang,Caiyu Song,Shuangle Xue
A bio-based allyl-terminated benzoxazine (AMP) was copolymerized with epoxy resins (E51) to enhance the toughness of epoxy resins. The curing behavior of the blended resins was investigated using differential scanning calorimetry (DSC) analysis and Fourier transform infrared (FTIR) spectroscopy. The crosslinking density and gel content of EP-AMP resins were decreased with the increasing AMP content. AMP significantly improved the residual carbon yield ( Y c ) of epoxy resins following high-temperature combustion in N 2 atmosphere, with enhancements correlating positively with AMP concentration. Compared with the value of EP resins (14.92%), the value of EP-4AMP resins (19.41%) was well increased. The mechanical properties (including flexural, impact, and tensile tests) were evaluated, revealing substantial improvements. The flexural strength, tensile strength, and elongation at break of EP-3AMP resins were 11.7%, 104.8%, and 67.6% higher than EP resins, respectively. The impact strength of EP-2AMP resins was 66.9% higher than EP resins. Furthermore, the incorporation of AMP markedly modified both adhesive (lap shear strength and peel strength) and dielectric properties of the epoxy resins.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Wang Zhiqin,Li Wei,Xiao Ningyu,Wang Chenxing
Conductive hydrogels show great potential for flexible sensors, yet their applications are limited by low strength, poor freeze resistance, and easy dehydration. To address these issues, this paper developed a multifunctional PVA (polyvinyl alcohol)/CMC (carboxymethyl cellulose sodium)/PANI (polyaniline)/PA (phytic acid)/BA (boric acid)/Fe 3+ hydrogel (denoted as PMNF) with a double-network structure formed via the Hofmeister effect and in situ polymerization. The hydrogel exhibits excellent mechanical properties (tensile strength: 236 kPa; elongation: 541%), high conductivity (2 S/m), and improved antifreezing behavior. At −12°C, it retains a conductivity of 0.86 S/m and over 300% elongation. It also demonstrates strong water retention after 15 days and stability in acidic/alkaline salt environments. Based on these properties, PMNF-based sensors reliably detect both subtle and large human motions under various conditions. This work offers a practical strategy for developing robust wearable electronics suited for real-world use.
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COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Na Hong,Nian Li,Yanping Song,Shuai Han,Shudong Zhang,Zhao Li,Jun Kang,Cui Liu,Shihao Wang,Min Xi,Yongfeng Wang,Zhenyang Wang
High-capacity silicon/carbon composite anodes for lithium-ion batteries face rapid capacity degradation from extreme volume changes due to conventional organic-dominated solid electrolyte interphase (SEI) lacking mechanical/ionic stability. Constructing robust inorganic SEI (e.g., LiF-dominated interphases) requires synergistic control of electrolyte interactions at the inner Helmholtz plane (IHP) and stress-adaptive interfacial architectures. Herein, a hierarchical dual-coating strategy integrating polyaniline (PANi) and laser-induced graphene (LIG) on SiO x anodes addresses this challenge. PANi layer selectively enriches fluorinated ethylene carbonate (FEC) at the IHP via dipole-dipole interaction, enabling preferential FEC reduction at 1.3 V (vs. Li/Li + ) to form LiF-dominated SEI. Theoretical calculations confirm higher FEC adsorption density and stronger adsorption energy on the hierarchically dual-coated SiO x /LIG/PANi-2 (−0.33 eV) versus bare SiO x (−0.09 eV). Meanwhile, LIGʼs 3D porous conductive scaffold dissipates stress, sustaining structural integrity under repeated expansion. The optimized SiO x /LIG/PANi-2 anode achieves 1812.5 mAh g −1 initial capacity with 90.5 % initial Coulombic efficiency at 0.1 A g −1 and retains 87.7 % capacity after 1000 cycles at 2.0 A g −1 , demonstrating exceptional electrochemical stability. Post-cycling analyses further validate the homogeneity of LiF-rich SEI, robust mechanical resilience, and exceptional electrode integrity. This atomic-scale IHP regulation, harmonized with macro-scale stress engineering, offers scalable strategies for silicon anodes in high-energy-density batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenling Wu,Haiqiang Wang,Puze Wang,Yang Cheng,Yuan Fang,Jiang Guo,Ting Zhao,Jianfeng Zhu
Two-dimensional (2D) layered MXene (e.g., Ti 3 C 2 T x ) is a research focus for zinc-ion capacitors (ZICs) electrodes due to its large specific surface area and high conductivity. However, its practical use is constrained by two critical bottlenecks: low theoretical capacitance and severe interlayer stacking, which directly reduce Zn 2+ transport efficiency and electroactive site accessibility. Constructing hierarchical structures addresses this by providing efficient Zn 2+ diffusion pathways, abundant electroactive sites, and excellent structural stability. This work prepared a 1D/2D hierarchical CoN-CNTs@PANI/Ti 3 C 2 T x composite via in-situ polymerization and electrostatic self-assembly. First, 1D CoN-CNTs provide polyaniline (PANI) polymerization sites to suppress its volume expansion and to form conductive channels, while spiky PANI shells offer extra faradaic sites. Second, 1D CoN- CNTs@PANI nanotubes prevent the restacking of 2D Ti 3 C 2 T x nanosheets, and the conductive framework of 2D Ti 3 C 2 T x nanosheets further suppresses PANI volume change to enhance rate capability and cycling lifespan. Third, the 1D/2D structure leverages synergies to accelerate interfacial charge/ion transport and reaction kinetics, critical for high-power ZICs. As a result, the three-electrode tests showed the electrode delivered 861.7 F g −1 at 0.5 A g −1 and retained 91 % capacitance after 5000 cycles at 10 A g −1 . The assembled CoN-CNTs@PANI/Ti 3 C 2 T x //Zn ZIC achieved 91.2 Wh kg −1 at 1600 W kg −1 , with 86 % capacity retention after 5000 cycles at 2 A g −1 . This work establishes an advanced MXene-based hierarchical design strategy for high-performance ZIC electrodes.
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Journal of Energy Storage
·
2025
·
IF 9.8
Changhai Zhang,Zhiqi Zhou,Xue Zhang,Xu Tong,Chao Wang,Tiandong Zhang,Wenju Wu,Qingguo Chi
High-temperature applications demand polymer dielectrics with a high glass transition temperature ( T g ), wide bandgap, and high dielectric constant for superior energy storage performance. However, inherent trade-offs among these key parameters in existing polymers lead to soaring leakage currents and increased energy losses at elevated temperatures, severely limiting further performance enhancement. To address this issue, this paper uses polyisopren-imide (PNI) as the matrix material, attempting to decouple the T g , bandgap, and dielectric constant using fluorination modification and the creation of physical-chemical double-crosslinked networks. First, electron-withdrawing fluorine atoms were incorporated into PNI to form FPNI 50 , enhancing the polymer's bandgap and thereby inhibiting charge excitation and reducing leakage current. Subsequently, dicyclopentadiene (DCPD) was employed as a chemical crosslinking agent to construct a covalent-bonded crosslinked network (FPNI 50 D 5 ) which effectively restricted molecular chain mobility and reduced dielectric loss. Finally, 4,4-dihydroxy dicyclohexane (BCHD) was introduced to form physical crosslinking via hydrogen bonding between hydroxyl groups and fluorine atoms. BCHD, featuring high polarity and a wide bandgap (8.84 eV), enhances the dielectric constant of the polymer while simultaneously suppressing carrier transition. Consequently, the FPNI 50 D 4.5 B 0.5 achieves complete decoupling of T g (250.4 °C), bandgap (4.229 eV), and dielectric constant (4.01), while exhibiting outstanding high-temperature energy storage performance. At 150 °C and an electric field strength of 600 MV/m, it delivers an energy storage density of 6.5 J/cm 3 with an efficiency of 90 %. The performance not only surpasses that of the pure polymer PNI but also demonstrates strong competitiveness among reported polymer composites.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Norah Salem Alsaiari,Muhammad Azhar Mumtaz,Khaled Alsaikhan,A.M. Afzal,Hussain Sawwan,Abdelfattah Amari,Sohail Mumtaz,M.A. Diab,Muhammad Hamza Waris
A novel electrode material, BiCo-MOF@NiO/PANI/rGO, was prepared through a low-cost hydrothermal method. The crystallinity and surface morphology were analyzed using XRD and SEM, and the BET study confirmed a specific surface area of 314 m 2 /g. Electrochemical testing showed that BiCo-MOF@NiO/PANI/rGO (B2) delivered a high specific capacity (Qs) of 431.66 mAh g −1 at 1.5 A g −1 , which is significantly greater than that of BiCo-MOF@NiO (100.08 mAh g −1 ) and BiCo-MOF@NiO/PANI (242.95 mAh g −1 ). Under a two-electrode asymmetric configuration, the device attained a Qₛ of 132.37 F/g at 0.7 A/g and maintained 83.3 % capacity after 10,000 cycles. It also offered a high energy density of 81.2 Wh kg −1 and a power density of 2695.7 W kg −1 . In addition to energy storage capabilities, the material exhibited notable electrocatalytic behavior for the HER, with a low Tafel slope (Ts) of 47.62 mV dec −1 . The outcomes highlight the composite's potential as a multifunctional material for both energy storage and electrocatalysis, paving the way for next-generation sustainable technologies.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xue Shang,Chengpeng Zhang,Chenglin Cai,Leiqiang Han,Zengyong Li
Electrospun fiber membranes demonstrate promising potential for developing wearable flexible pressure sensors with enhanced breathability and exceptional sensing capabilities. However, the fabrication of electrospun membranes featuring three-dimensional structures to further improve sensor performance remains a significant technical challenge. This study proposes an innovative beaded fiber-based mold-assisted self-assembly method to prepare electrospun fiber membranes with ordered microstructure arrays (EFM-OMAs). Then, the flexible pressure sensor based on EFM-OMAs was obtained, with a high sensitivity of 63.41 kPa −1 , a wide detection range of 0–110 kPa, an ultra-low detection limit of 0.92 Pa and excellent durability (10,000 cycles). Finally, the flexible pressure sensor was embedded in smart clothing, enabling real-time and accurate monitoring of physiological signals in the human body. Additionally, the sensor's breathable design facilitates efficient sweat expulsion, thereby reducing the risk of skin inflammation. This technology demonstrates potential for wearable applications, including intelligent healthcare systems, smart sports equipment, and human-computer interaction interfaces.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Qianhe Ji,Deyun Liu,Shuai Liu,Lei Xu,Yaofeng Zhu,Hui-Ya Wang
Designing electromagnetic wave-absorbing materials (EMAs) with adjustable performance is crucial for adapting to constantly changing electromagnetic environments. Herein, a flexible polyvinyl alcohol/polyaniline (PPA) aerogel was fabricated through a one-step process combining unidirectional freezing and low-temperature polymerization. During this process, polyaniline (PANI) self-assembles into a “coral-like” nanostructure, which promotes the formation of secondary dendritic arms. These secondary dendritic arms are beneficial for enhancing wave absorption by improving the conductive network and heterogeneous interfaces. Consequently, the PPA aerogel achieves a minimum reflection loss (RL min ) of −26.85 dB and covers an effective absorption bandwidth (EAB) of 3.08 GHz (9.33–12.04 GHz) at a thickness of 3.8 mm. Additionally, the electromagnetic parameters can be dynamically tuned by adjusting the pore structure and conductive network through compression, enabling the control of wave-absorbing performance. Furthermore, the high porosity of the aerogel limits convective heat transfer and reduces thermal radiation, which imparts excellent thermal insulation and infrared stealth. This work offers valuable guidance for developing multifunctional EMAs with adjustable absorption characteristics.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Xin He,Tiantian Li,Jie Xu,Shenglan Yuan,Shaoju Fu
Knitting strain sensor capable of monitoring health signals and activities showing great potential in human motion monitoring. Integrating multifunctional conductive yarns into apparel to be wearable and durable remains great challenge in their practical application. Herein, a novel knitting fabric strain sensor with good sensitivity and processability was proposed, varied of conductive yarns were firstly fabricated with cotton based multifunctional fibers, and then they were designed and knitted into organization structures such as plain, rib and gauze weave. The strain sensor exhibited relatively smooth surfaces and complex structures, fabric 3# and fabric 4# presented the largest tensile strength, while that of fabric 1# and fabric 2# were relatively smaller. There were little changings for the prepared four fabrics, due to their similar elemental compositions, and the four prepared fabrics were observed to have good pilling ability, air permeability, and wearability. Fabric 1# consisted of slivered yarns + acrylic/cotton presented the best conductivities and sensing stability among the samples. In sum, all the prepared fabrics had shown greatly potential in the human motion monitoring application.
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高影响因子
危险品化学品经营许可证（带存储）