INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 34
·18267-18276
·
IF 3.9
Liu Siling,Qi Kaiyuan,Peng Chong,Tan Shuai,Wang Caihong,Wu Yong
Piezo-electrolytes have emerged as
a kind of multifunctional material
for self-charging power cells but well coupling of piezoelectric and
conductive components remains a concern. In this work, protic acidic
ionic liquid 1-methylimidazolium hydrogen sulfate, which is miscible
with piezoelectric barium titanate (BaTiO 3 ), is fabricated
into a self-standing ionogel piezo-electrolyte by in situ polymerization
of acrylate monomers for self-powered supercapacitors. Attachment
of the acidic anions on the surface of the basic BaTiO 3 via acid–base interactions allows the piezoelectric particles
to be homogeneously stabilized in the ionogel through electrostatic
repulsion. The ionogel piezo-electrolyte exhibits an ionic conductivity
of 2.2 mS cm –1 with a proton transference number
of 0.234 and an open circuit voltage of 6.75 V at a compressive force
of 20 N. A piezo-supercapacitor is constructed by sandwiching the
ionogel between polyaniline-coated carbon cloth, delivering a specific
capacitance of 1795 mF cm –2 . When a static compressive
force is applied, the piezo-supercapacitor is self-charged up to 1259
mV with a maximum rate of 581 mV s –1 . Meanwhile,
the piezo-supercapacitor shows a voltage decay of only 5% after 9000
s in the absence of external forces. A single piezo-supercapacitor
with 1 cm 2 active area successfully powers an electronic
watch by finger pressing. The strategy of coupling proton conduction
with piezoelectric response in the protic ionogel efficiently enhances
energy conversion in piezo-supercapacitors.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhongxin Dong,Yanchao Yang,Dianfu Ren,Yanwei Xiao,Di Wu,Liangliang Pei,Yunhe Xing,Han Feng,Shengdao Wang,Guibin Wang
Closed-loop recycling of PAEK composites via dynamic imination strategy. • Intractable PAEK is converted into a soluble amorphous intermediate. • Continuous fibers are non-destructively recovered with >95% strength retention. • The amorphous intermediate can regenerate into PAEK resin. • Recycled matrix retains pristine thermomechanical performance over multiple cycles. The recycling of high-performance fiber-reinforced PAEK composites is hindered by a paradox: the chemical inertness and crystallinity that provide exceptional stability also make their deconstruction extremely difficult, while conventional harsh methods irreversibly degrade both fibers and resin matrix. Herein, we report a targeted structural reconstruction strategy that enables the mild amorphization and closed-loop recovery of high-value composite components. With PEEK as a model, ZnCl 2 is utilized to catalyze the targeted imination of carbonyl groups. As verified by rigorous density functional theory (DFT) calculations, this specific coordination significantly reduces the kinetic activation barrier, enabling the disruption of the dense crystalline structure under extraordinarily mild conditions. Crucially, this crystalline-to-amorphous transition fundamentally overcomes mass transfer limitations, enabling the non-destructive extraction of continuous reinforcing fibers while retaining >95% of their pristine mechanical properties. After fiber separation, acid-catalyzed hydrolysis triggers structural reconstruction of the PEEK molecular backbone, largely restoring its original semi-crystalline morphology and key thermomechanical properties. This versatile recycling platform exhibits broad applicability across PAEK-based materials with diverse molecular architectures and maintains stable performance over three consecutive recycling cycles. This work provides a promising strategy with potential for further process development of high-performance PAEK composites.
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高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Yiqian Wu,Lingping Pu,Yu Kuang,Jianhua Ding,Xiang Ke,Rengui Xiao,Lin Fu
Aluminum (Al) foil is a generally used cathode current collector in lithium-ion batteries (LIBs). During operation, insufficient interfacial compatibility between the current collector and the active material can lead to the delamination of the active material. Additionally, the surface of the Al foil is susceptible to corrosion by the electrolyte, which further compromises the structural integrity of the current collector. Addressing the challenges of existing modification techniques, which often rely on complex processes and struggle to simultaneously achieve interfacial modification and corrosion protection, this study employs a simple electrochemical polymerization strategy. It constructs a polyaniline (PANI) layer with a 3D array structure on the Al foil surface, integrating the dual functions of enhanced interfacial adhesion and electrolyte protection. The LFP battery assembled with the modified current collector (LFP-PANI/Al) has exhibited 6.2% increase in discharge-specific capacity at 1 C rate compared to the LFP battery assembled with bare Al foil current collector (LFP-Bare Al). Meanwhile, after 1000 cycles at 2 C rate, the discharge-specific capacity has reached 63.9 mAh g −1 , while the LFP-Bare Al group has achieved only 32.6 mAh g −1 . This work offers new insights for future modifications of current collectors to improve the long-term cycling stability of LIBs.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 17
·2989
·
IF 5.1
Dongdong Shi,Guiqin Yan
Herein, a highly selective and sensitive fluorescent sensing system is developed for the accurate quantitative determination of γ-Hexachlorocyclohexane (γ-HCH, Lindane). With carboxyl-functionalized CdSe/ZnS core–shell quantum dots (QDs) as the substrate, 3-Aminophenylboronic acid (3-APBA) is covalently conjugated onto the quantum dot surface via an amidation reaction. Systematic characterizations are used to confirm the successful fabrication of the CdSe/ZnS-COOH@3-APBA fluorescent probe, which exhibits excellent luminescence properties and superior colloidal dispersion stability. Under optimal experimental conditions, an increased γ-HCH concentration induces gradual attenuation of the probe fluorescence intensity. A favorable linear correlation is achieved within 10–140 nM, and the limit of detection is 2.62 nM. Mechanistic studies reveal that γ-HCH binds to 3-APBA on the probe surface via halogen bonding to form non-fluorescent ground-state association complexes, thereby triggering static quenching of the probe. This method can effectively distinguish α-, β-, and δ-hexachlorocyclohexane isomers. With the merits of simple operation, high sensitivity, excellent stability, and strong anti-interference capability, it provides a new strategy for the rapid screening and accurate quantification of γ-HCH residues in environmental and food matrices.
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 4.6
Ni Xiao-Qi,Xu Xiang-Yang,Zhu Yao-Feng,Wang Hui-Ya
The rapid advancement of communication technologies and wearable applications has increased the demand for high-performance flexible electromagnetic wave absorption materials. Conventional conductive fibers are often constrained by their poor wearability, weak interfacial stability, and limited absorption efficiency, which restrict their reliability and practical applicability in dynamic environments. Herein, a flexible and robust electromagnetic-absorbing fiber was successfully fabricated via wet spinning techniques, which integrates multi-walled carbon nanotubes (MWCNTs), polyaniline (PANI), and aramid nanofibers (ANFs). Polymerization of PANI on the MWCNTs surface is employed to optimize impedance matching and enhance interfacial compatibility, while ANFs serve as a continuous structural skeleton, improving the mechanical strength and spinnability. The resulting composite fibers exhibited a tensile strength of (202.0±8.0) MPa and an elongation at break of 13.6%±0.9%, stable electrical conductivity under mechanical deformation, and ultrasonic cleaning. Notably, the fiber architecture enables superior electromagnetic wave absorption, achieving a minimum reflection loss of −62.07 dB and an effective bandwidth of 3.24 GHz compared to the powder counterparts, owing to the extended propagation path and multiple scattering within the aligned fiber network. In addition, the composite fibers demonstrated self-extinguishing behavior during combustion, reflecting their inherent flame-retardant characteristics. This study provides a feasible strategy for developing flexible, high-performance electromagnetic wave (EMW)-absorbing fibers for next-generation protective textile materials.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Nan Li,Xiaomi Xie,Mimi Zhang,Sitao Fang,Zifu Du,Loujun Gao,Lei Lv,Jianzhang Zhou,Deyin Wu,Rui Li,Xuan Jian
Developing efficient, stable and CO-tolerant electrocatalysts for alkaline hydrogen oxidation reaction (HOR) is vital for hydrogen fuel cells. Herein, we report a phytic acid-modified polyaniline-derived N, P-codoped porous carbon supported ruthenium catalyst (Ru/PA-Ani) for alkaline HOR. The catalyst exhibits an outstanding anodic current density of 8.97 mA cm −2 at 50 mV overpotential over 10 times higher than Ru/Ani and much better than commercial Pt/C. Mechanistic study suggested that the phosphate groups of Ru/PA-Ani catalyst establish a stable complexation system with polyaniline, and the molecular orbital distribution features of its HOMO and LUMO afford molecular-level support for the valence state modulation of Ru 3+ Meanwhile, N, P co-doping optimizes active site dispersion and electronic structure, promoting OH* generation and charge transport. This work provides an effective strategy for high-performance HOR catalysts and guides the design of low cost, stable anode catalysts for alkaline fuel cells.
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高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xu Yang,Kaijia Zuo,Nianben Zheng,Zhiqiang Sun
Minimizing polarization losses and enhancing stability through electrode engineering are essential for improving the efficiency of the vanadium redox flow battery (VRFB) systems. In this work, we present an asymmetric VRFB featuring a nitrogen-doped graphite felt (N-GF) with a carbon nanofiber network as the positive electrode, and a bismuth-decorated graphite felt (Bi-GF) as the negative electrode. The N-GF enhances the redox kinetics of the V 5+ /V 4+ pairs and provides structural durability, while the Bi-GF mitigates the hydrogen evolution reaction and facilitates the V 3+ /V 2+ reaction. As a result, the asymmetric cell achieves an energy efficiency of 90.72% at 100 mA cm −2 and maintains 80.52% at 250 mA cm −2 . After 200 cycles at 250 mA cm −2 , the energy efficiency exhibits a minimal average decay rate of only 0.017% per cycle, while the capacity retention remains at 73.47%. Long-term cycling analysis further reveals that N-GF preserves its nanofiber network and surface chemistry, whereas the pristine graphite felt suffers from serious carbon corrosion. This work demonstrates that rational asymmetric electrode design is an effective strategy to achieve both high energy efficiency and long-term durability in VRFBs.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Fei Yan,Luao Wu,Guangle Zhou,Lina Wei,Jialei Wang,Chaoran Song,Wenhui You,Ping Li,Lidong Wang
Rough spherical O v -rich Fenton-like catalysts were fabricated by hard-template method and chemical reduction. • Dimethylamine could be mineralized to non-toxic carbon dioxide, water and NO 3 − . • Rich oxygen vacancies and bimetallic synergism promoted the activation of PMS. • The catalyst could adsorb DMA and PMS, thus shortening the distance between DMA and ROS. As a widely used volatile organic solvent, dimethylamine (DMA) easily escapes into atmosphere, causing great threat to the environment. In this study, a novel heterogeneous Fenton-like catalyst, spherical CoFe 2 O x with rich oxygen vacancies and rough surface (S-CoFe 2 O x -O v ) is fabricated with the hard-template method to effectively activate PMS for removing DMA. Compared with CoFe 2 O x prepared by traditional coprecipitation method, the DMA degradation rate is enhanced by 13 times over S-CoFe 2 O x -O v . Quenching experiments, EPR analysis, and electrochemical tests confirmed that SO 4 •− , O 2 •− , 1 O 2 , and electron transfer pathway are responsible for the degradation of DMA. XPS analysis proves that O v and the Co 2+ –Co 3+ redox cycle are responsible for the production of ROS from PMS, and the presence of Fe 2+ facilitated the redox cycle of Co 2+ –Co 3+ . DFT calculations prove that the adsorption and activation of PMS on the surface of catalyst is thermodynamically favorable. In addition, DMA could also be adsorbed on the catalyst surface, which can shorten the migration distance between DMA and ROS. The degradation mechanism of DMA is proposed and verified using the detected intermediates. The catalyst also exhibits effective degradation of other organic amines, demonstrating the broad applicability. Therefore, this study provides a feasible hard-template method for fabricating efficient Fenton-like catalyst. Download: Download high-res image (153KB) Download: Download full-size image
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npj Flexible Electronics
·
2026
·
IF 15.4
Lin Kanglong,Yang Baili,Yan Guizhi,Li Changhao,Zhao Guoxu,Zou Yang,Li Zhou,Wang Dong
Chronic diabetic wounds present a significant clinical challenge due to antibiotic abuse and limited understanding of the wound microenvironment. Real-time monitoring of key biomarkers in the wound microenvironment can provide critical insights into wound status and guide therapeutic interventions. In this study, we developed an intelligent wound patch by integrating a near-infrared (NIR)-responsive photothermal antibiotic-releasing hydrogel (PPQTA) with a multichannel electrochemical biosensor array, which takes sensor monitoring-guided precise drug administration as its core. The sensing module can continuously monitor the key biomarkers in the wound in situ with high sensitivity and strong anti-interference capability within the physiological range (pH: 4–9; uric acid: 0–700 μM; glucose: 5–30 mM), providing a quantitative basis for drug release. The PPQTA hydrogel can release drugs on demand via NIR irradiation based on the sensing results, achieving 100% antibacterial efficacy against both Gram-negative and Gram-positive bacteria. Experiments in a diabetic rat wound model confirmed that this patch can monitor the dynamic changes of biomarkers in situ and guide drug administration within 7 days. After terminating drug administration on day 4, the bacteria in the wound were effectively eliminated on day 5, and the wound healing process was significantly promoted. By combining real-time diagnostics with responsive therapy, this patch offers a closed-loop strategy for personalized management of diabetic chronic wounds.
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高影响因子
Gels
·
2026
·Vol. 12
·期 8
·690
·
IF 6.4
Ran Jin,Qingquan Xue,Yang Zhang
Developing fiber-shaped supercapacitors (FSCs) with high capacitance, high energy density, and exceptional rate performance is crucial for reliable, stable and high-performance wearable electronics. Here, a polyaniline (PANI) @ MXene Ti3C2Tx/graphene (PTG) aerogel fiber was rationally fabricated via a confined hydrothermal method followed by freeze-drying treatment. The graphene sheets construct the skeleton of the aerogel fiber, which possesses a porous and interlinked structure, providing interconnected diffusion channels and a high specific surface area that promote electrolyte migration and abundant ion adsorption sites. Moreover, the covalent modification between PANI nanoparticles and Ti3C2Txsheets can significantly improve interfacial coupling and provide abundant redox sites, resulting in a reduced energy barrier of electron transfer, good interfacial stability and superior H+storage capability. As a consequence, the PTG aerogel fiber electrode delivers an excellent specific mass capacitance of 484.8 F g−1, impressive rate properties (244.4 F g−1at 10 A g−1) and exceptional cycle ability (85.2% after 5000 cycles). Additionally, the fabricated symmetrical FSC exhibits considerable electrochemical performance, including high capacitance and good energy density. This work depicts a novel route to prepare a graphene fiber-based electrode for high-performance FSCs in an intelligent wearable system.
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高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Yushan Zou,Lishi Wei,An Yang,Shanshan Song,Saira Sharafat,Xueting Dong,Yongming Song
Flexible hydrogel-based sensors have attracted considerable attention for applications in human motion monitoring, health management, electronic skin, and human-machine interaction. However, it remains challenging to develop hydrogel-based strain sensors that simultaneously possess good mechanical properties, self-adhesion, self-healing capability, and antibacterial activity. Herein, polydopamine-coated cellulose nanofibers (CNF@PDA) and polyaniline (PANI) were incorporated into a polyacrylamide (PAM) network to fabricate a multifunctional CNF@PDA/PANI (x) /PAM (CPP x P) hydrogel. The introduction of CNF@PDA not only enhances the mechanical strength and adhesion of the hydrogel, but also improves the dispersion stability of PANI, thereby contributing to enhanced conductivity and sensing stability. As a result, the obtained hydrogel exhibits a tensile strength of 0.073 MPa, an elongation at break of 859.3%, excellent self-healing capability, an adhesion strength of 42.73 kPa on porcine skin, and good antibacterial activity. Importantly, the hydrogel can be used as a strain sensor with high sensitivity (GF = 7.95), a rapid response of 120 ms, and excellent durability over 500 cycles. The sensor is capable of monitoring both subtle and large human motions, highlighting its great potential for applications in flexible wearable devices and intelligent sensing systems.
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PubMed
高影响因子
Micromachines
·
2025
·Vol. 16
·期 7
·754
·
IF 3
Shuang Fan,Yangyang Gong,Suliang Chen,Yingmeng Zhang
Layered transition metal dichalcogenides (TMDs) have gained considerable attention as promising cathodes for aqueous zinc-ion batteries (AZIBs) because of their tunable interlayer architecture and rich active sites for Zn2+storage. However, unmodified TMDs face significant challenges, including limited redox activity, sluggish kinetics, and insufficient structural stability during cycling. These limitations are primarily attributed to their narrow interlayer spacing, strong electrostatic interactions, the large ionic hydration radius, and their high binding energy of Zn2+ions. To address these restrictions, an in situ organic polyaniline (PANI) intercalation strategy is proposed to construct molybdenum disulfide (MoS2)-based cathodes with extended layer spacing, thereby improving the zinc storage capabilities. The intercalation of PANI effectively enhances interplanar spacing of MoS2from 0.63 nm to 0.98 nm, significantly facilitating rapid Zn2+diffusion. Additionally, the π-conjugated electron structure introduced by PANI effectively shields the electrostatic interaction between Zn2+ions and the MoS2host, thereby promoting Zn2+diffusion kinetics. Furthermore, PANI also serves as a structural stabilizer, maintaining the integrity of the MoS2layers during Zn-ion insertion/extraction processes. Furthermore, the conductive conjugated PANI boosts the ionic and electronic conductivity of the electrodes. As expected, the PANI–MoS2electrodes exhibit exceptional electrochemical performance, delivering a high specific capacity of 150.1 mA h g−1at 0.1 A g−1and retaining 113.3 mA h g−1at 1 A g−1, with high capacity retention of 81.2% after 500 cycles. Ex situ characterization techniques confirm the efficient and reversible intercalation/deintercalation of Zn2+ions within the PANI–MoS2layers. This work supplies a rational interlayer engineering strategy to optimize the electrochemical performance of MoS2-based electrodes. By addressing the structural and kinetic limitations of TMDs, this approach offers new insights into the development of high-performance AZIBs for energy storage applications.
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