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Ionic liquid-grafted MXene composite polymer electrolytes for high-performance solid-state batteries

Chemical Engineering Journal 2025年 514卷

作者： Qian, Zhi Qiu, Zhao-Dong Wang, Rui-Qing Wei, Mei-Tong Fei, An-Min Hu, Zhi-Yi Mohamed, Hemdan S.H. Chen, Li-Hua Li, Yu Su, Bao-Lian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Wuhan University of Technology Wuhan430070 China Physics Department Faculty of Science Fayoum University El Gomhoria Street Fayoum63514 Egypt University of Namur NamurB-5000 Belgium

All-solid-state batteries (ASSBs) have obtained much attention due to the high energy density and security. At present, PEO-based solid-state batteries are considered to be one of the most promising candidates for high-performance ASSBs due to the excellent processability and good interfacial stability. However, low ionic conductivity and Li+ transference number seriously hinder their progress in practical applications. Here, a novel filler is developed by embedding ionic liquid (IL) grafted onto the surface of MXene to improve the electrochemical performance of PEO-based solid composite polymer electrolyte (MXene-IL-SPE) for ASSBs. The 2D MXene can significantly reduce the crystallinity of PEO, and the presence of IL not only enhances the dispersion of MXene in the polymer matrix, but also promotes the dissociation of lithium salts and anchors anions. As a result, the MXene-IL-SPE possesses high ionic conductivity (7.19 × 10−4 S cm−1) and Li+ transference number (0.51), together with wide electrochemical window (5.2 V) at 60 °C. The assembled LiFePO4|MXene-IL-SPE|Li full cell exhibits remarkable rate capability and exceptional capacity of 154.8 mAh g−1 over 120 cycles with an impressive 95.3 % capacity retention at 0.5 C. This design opens up a new way to prepare high performance CPEs for ASSBs. © 2025 Elsevier B.V.

关键词： Solid-State Batteries

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Microstructure evolution of 7050 aluminum forgings during surface cumulative plastic deformation

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Transactions of Nonferrous Metals Society of China 2025年第1期35卷 45-59页

作者： Jian-liang HU Ze-xiong ZHANG Cheng XING Xiu-jiang WU Shi-quan HUANG Hong BO Key Laboratory of Advanced Forging&Stamping Technology and Science Ministry of EducationYanshan UniversityQinhuangdao 066004China State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South UniversityChangsha 410083China College of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China Hebei Engineering Technology Research Center of Metal Precision Plastic Processing Yanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

To elucidate the mechanisms of regulating the microstructure uniformity in 7050 aluminum forgings through surface cumulative plastic deformation(SCPD),the microstructure under different solution treatments was investigated using metallographic observation(OM),electron backscatter diffraction(EBSD),transmission electron microscopy(TEM),and X-ray diffraction(XRD).The findings demonstrate that the most uniform microstructure in the forgings is achieved with a solution treatment at 470℃for 30 *** SCPD process generates a significant number of needle-shaped precipitates,resulting in a higher dislocation density and stored *** treatments alleviate the pinning effect of second-phase particles and facilitate static recrystallization(SRX)in forgings,leading to a reduction in grain ***,mechanical testing results demonstrate 7%−13%increase in tensile strength and more uniform elongation of the forgings in different directions.

关键词： microstructure homogeneity surface cumulative plastic deformation(SCPD) static recrystallization(SRX) dislocation density

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Electric field-induced alignment and orientation of dielectric fibers: Mechanisms, modelling, and experimental analysis

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Ceramics International 2025年

作者： Li, Wenjie Jiang, Yuncong Wu, Lianfeng Wang, Chen Liu, Hang Jiang, Siyi Zhou, Xin Mu, Yuwen Xu, Lingfeng He, Xiaodong Li, Mingwei He, Fei National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology China State Key Laboratory of Marine Coatings Marine Chemical Research Institute Co. Ltd. China National Key Laboratory for Precision Hot Processing of Materials Harbin Institute of Technology China

Electric field-induced alignment of dielectric fibers (DFs) is a promising method for controlling the orientation of fibers in composites. In this work, we investigated the mechanisms of electric field-induced alignment and its influence on the orientation of DFs in a solution medium. Through modelling and experimental analysis, we demonstrate that the application of an electric field to a suspension of DFs results in the fibers alignment along the direction of the field. This alignment process occurs due to the interaction between the electric field and the dipole moments of the fibers. Furthermore, we explore the factors affecting the process of alignment, such as the strength of the applied electric field, the dielectric constants of fibers and solution, and the characteristics of the fibers. Overall, electric field-induced alignment offers a versatile and efficient method, enabling the development of advanced materials with tailored properties for various industrial applications. © Elsevier Ltd and Techna Group S.r.l.

关键词： Dielectric fibers Electric field Directional orientation Analytical modelling

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Preparation of TEMPO-partially oxidized sodium alginate/SF scaffolds with degradation compatibility for skin defect repair

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Carbohydrate Polymers 2025年 357卷 123437页

作者： Zhao, Xinxin Wang, Wenyuan Cheng, Bo Li, Binbin Qiu, Tong Yan, Lesan Wang, Xinyu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China Sanya Science and Education Innovation Park Wuhan University of Technology Sanya572000 China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan University of Technology Wuhan430070 China Department of Stomatology Zhongnan Hospital of Wuhan University Wuhan430060 China

This study aimed to curtail the secondary damage caused by traditional dressings by cross-linking TEMPO-mediated oxidized sodium alginate (TOSA) with silk fibroin (SF) through the EDC system and preparing the scaffolds through freeze-drying and anhydrous ethanol immersion. The good adsorption, mechanical properties, high porosity, and good in vitro and in vivo biocompatibility of the scaffold can improve the healing efficiency of the wound. Additionally, sodium alginate was oxidized by the TEMPO system to lower its molecular weight and hence increase the degradation rate of the scaffold. Consequently, the scaffold demonstrated a rapid degradation rate (42.26 % degradation in 7 days) in the in vitro enzyme solution. The scaffold will not induce secondary damage to the wound and does not require removal. Furthermore, the oxidation degree of sodium alginate was regulated by the TEMPO system, supporting the preparation of degradation-adapted skin tissue engineering scaffolds. © 2025 Elsevier Ltd

关键词： Silk

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Resilient ultrafine fiber sponges with thermal bridge structures for high-temperature traffic noise reduction

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Journal of Colloid and Interface Science 2025年 693卷 137634页

作者： Li, Yanzhe Zong, Dingding Sun, Yaning Pang, Shuying Liao, Yalong Liu, Yong Ministry of Education Key Laboratory for Advanced Textile Composite Materials School of Textile Science and Engineering Tiangong University Tianjin300387 China Aerospace Institute of Advanced Material & Processing Technology Beijing100074 China

With the expansion of the transportation business, noise pollution has seriously affected human health and quality of life. Vehicles not only generate noise but also release a large amount of heat, existing traffic noise reduction materials have no thermal conductivity and poor low-frequency noise reduction. Herein, thermal bridge structured elastic ultrafine fiber sponges (TBFSs) were constructed in one step through simultaneous high-humidity assisted electrospinning and electrospraying. The thermal bridge structures endow fiber sponges with good thermal conductivity (close to 0.1 W m−1 K−1), increased by 350 % compared with common fiber sponges. More importantly, due to the complex pore channel and the vibration effect of the thermal bridge structures, the TBFSs achieve a high noise reduction coefficient of 0.58, which can reduce the high-temperature white noise by 16.5 dB at 100 °C. Besides, the synergistic effect of elastic polyurethane and heat crosslinking endows TBFSs with good mechanical properties, demonstrating negligible plastic deformation following 100 cycles of compressive loading. The successful development of thermal bridge structures fiber sponges provides a new solution for high-temperature safety noise reduction. © 2025 Elsevier Inc.

关键词： Noise abatement

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Ultrafast synthesis of Nanoscale Metal Borides for Efficient Hydrogen Evolution

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Angewandte Chemie - International Edition 2025年第14期64卷 e202425257页

作者： Liu, Tingting Chen, Chen Pu, Zonghua Huang, Qiufeng Jiang, Jiadong Han, Min Chen, Wei Yu, Guangtao Sun, Yuzhi Huang, Shengyun Chen, Qingjun Al-Enizi, Abdullah M. Nafady, Ayman Mu, Xueqin Mu, Shichun Fujian Key Laboratory of Polymer Materials College of Chemistry and Materials Science Fujian Normal University Fujian Fuzhou350117 China Fujian Normal University Fujian Fuzhou350117 China Ganjiang Innovation Academy Key Laboratory of Rare Earths Chinese Academy of Sciences Ganzhou341000 China Department of Chemistry College of Science King Saud University Riyadh11451 Saudi Arabia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

Nanoscale metal borides, with exceptional physicochemical properties, have been attracted widespread attention. However, traditional synthesis methods of metal borides often lead to surface coking and large particle sizes. Herein, we have employed a flash Joule heating (FJH) technique to enable the ultrafast synthesis of metal boride nanomaterials. The synthesized materials encompass a wide range of diverse categories, including alkaline-earth metal borides (CaB6), transition metal borides (TiB2, VB2, CrB2, MoB, MoB2, MnB2, MnB4, FeB, CoB, NiB), noble-metal borides (RuB2, RuB1.1), and rare-earth metal borides (LaB6, CeB6). As an example, the RuB2 demonstrates highly desirable electrocatalytic performance for all-pH hydrogen evolution reaction (HER). Especially, under the acidic condition, it exhibits an overpotential as low as 15 mV at a current density of 10 mA cm−2, with a nearly 100 % faradic efficiency. Additionally, in situ Raman spectra confirm that both Ru and B sites serve as active sites for the HER. Moreover, the stability of RuB2 can be further enhanced by optimizing the microenvironments of the anolyte composition (H+, K+). More importantly, the experimental and density functional theory (DFT) calculations reveal that the co-existence of H+ and K+ localized around the RuB2 plays a crucial role in further enhancing the stability. © 2025 Wiley-VCH GmbH.

关键词： Joule heating

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Facet Engineering of Metal-Organic Frameworks for Triboelectric Nanogenerators-Based Self-Powered Water Splitting

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advanced materials 2025年第0期 e2415616页

作者： Kuang, Tairong Deng, Linbing Liu, Mingjin Ding, Yutong Guo, Wei Cai, Zhao Liu, Wenxian Huang, Zhao-Xia Lab State Key Laboratory of Advanced Separation Membrane Materials College of Materials Science and Engineering Zhejiang University of Technology Hangzhou310014 China National Engineering Research Center of Novel Equipment for Polymer Processing Key Laboratory of Polymer Processing Engineering Ministry of Education Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing Department of Mechanical and Automotive Engineering South China University of Technology Guangzhou510641 China Faculty of Materials Science and Chemistry China University of Geoscience Wuhan430074 China

Metal-organic frameworks (MOFs) are highly versatile materials with tunable chemical and structural properties, making them promising for triboelectric nanogenerators (TENGs) and electrocatalysis. However, achieving precise control over MOF coordination structures to optimize facet-dependent properties remains challenging. Here, a facile and scalable dual-solvent synthesis strategy is presented to fabricate dendrite Co-2-methylimidazole MOF (ZIF-67-D), enabling tailored preferred facet and coordination environments. Using density functional theory (DFT) calculations and synchrotron-based X-ray absorption spectroscopy, it is demonstrated that ZIF-67-D, enriched with (112) facets, features a reduced Co coordination number and enhanced electron-donating ability compared to the conventionally (011) facet-dominated rhombic dodecahedron ZIF-67 (ZIF-67-R). This facet engineering boosts TENG charge density by 2.4-fold, OER current density by 9.9-fold (@1.65 V), and HER current density by 1.9-fold (@-0.3 V). The (112)/(011) facet ratio can be also tuned to precisely alter TENG output. Moreover, the optimized ZIF-67-D shows excellent stability, maintaining electrolyzer performance for 72 h and enabling TENG devices even in high humidity. Consequently, ZIF-67-D-based TENG (D-TENG) devices exhibit robust energy generation and power ZIF-67-D||ZIF-67-D electrolyzers for continuous hydrogen (H2) production. These findings introduce a new paradigm for converting mechanical energy into sustainable chemical energy, offering insights into facet engineering for high-performance energy harvesting systems. © 2025 Wiley-VCH GmbH.

关键词： Electrocatalysis

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Effect of Phase Structure on the Properties of Additively Manufactured NiTi Alloy Based on Molecular Dynamics Simulation

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Metals 2025年第4期15卷 411-411页

作者： Zhao, Tianxiang Huang, Jiankang Zhao, Huayu Xiang, Rui Song, Xueping Fan, Ding State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metal Lanzhou University of Technology Lanzhou730050 China Materials Science and Engineering College Lanzhou University of Technology Lanzhou730050 China

NiTi alloy has been widely used due to its excellent shape memory effect, superelasticity, and high damping performance. These excellent properties are mainly derived from its unique phase structure. In order to further explore the effect of different phase ratios on the performance of NiTi alloy, this study successfully prepared NiTi alloys with different atomic ratios by controlling the wire feeding speed to control the atomic ratio in the alloy. The results of TEM showed that the alloy with a lower Ni atomic ratio is enriched with Ti element, while the alloy with a higher Ni atomic ratio has a coexistence of NiTi phase and NiTi2 phase. At the same time, the compression performance showed that the increase in Ni atomic ratio can improve the compression performance of the alloy. In addition, by constructing a molecular dynamics model of NiTi alloys with different phase ratios, the unloading recovery behavior and phase transformation characteristics of the alloy under external force were analyzed. The results showed that with the increase of the NiTi2 phase ratio in the alloy, the irrecoverable strain also increases, exceeding the elastic strain limit of the NiTi2 phase, resulting in the generation of disordered structure and plastic deformation in the late deformation stage. In addition, with the increase of the NiTi2 phase ratio, the energy dissipation area of the hysteresis curve increases, reflecting a greater energy loss. © 2025 by the authors.

关键词： Thawing

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Improvement of the regenerability and surface electronegativity of rectorite via magnetic modification

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Journal of Molecular Liquids 2025年 427卷

作者： Su, Dan Huang, Jingyi Zhang, Ge Gao, Jing Wen, Zhipan Wang, Yingru School of Chemistry and Environmental Engineering Wuhan Institute of Technology Wuhan430073 China State Key Laboratory of New Textile Materials and Advanced Processing Technology Wuhan Textile University Wuhan430200 China

In this study, the magnetic modification of rectorite was conducted to enhance its regenerability and surface electronegativity. When using the raw rectorite, the removal rate of ciprofloxacin was 78 % and the recovery rate was only 26 % after six regeneration cycles. However, with magnetized modified rectorite (M-REC), the removal rate of ciprofloxacin was 97 % and the recovery rate exceeded 75 %. The magnetic properties, easy magnetic separation and enhanced surface electronegativity of M-REC were confirmed through SEM, TEM, VSM, XRD, BET and XPS characterization. After six regeneration recycles, the basic skeleton structure of M-REC remained largely unchanged, indicating that has excellent stability. Additionally, the adsorption kinetics and thermodynamics of M-REC were investigated, and the Langmuir model accurately described the adsorption isotherm. The adsorption kinetics data fit the pseudo-second order models. The adsorption rate was determined by the number of available adsorption sites on the M-REC surface, and the removal process was primarily driven by chemisorption. Therefore, M-REC is an environmentally friendly adsorption material with potential applications in environmental remediation. © 2025

关键词： Adsorption isotherms

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Fabrication and characterization of GCF/PyC composites by TG-CVI densified porous glassy carbon preform

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Ceramics International 2025年

作者： Jia, Jiangang You, Xinya Pan, Zikang Zhang, Hongqiang Xiao, Yang Yuan, Zhongtian Liu, Diqiang Guo, Tieming State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou730050 China School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China

Carbon foams with adjustable three-dimensional architecture are obtained by template method. This paper describes the effects of template content impact on the porous framework, microstructure and mechanical properties of glassy carbon foams. Then a serious of glassy carbon foam/pyrocarbon (GCF/PyC) composites were fabricated by thermal gradient chemical vapor deposition (TG-CVI) using glassy carbon foam with different porosity as preform. After densification, bulk density of glassy carbon foam was increased and defects in carbon foam framework were repaired, which contributes to mechanical properties and ensures higher thermal conductivity. As the porosity increases, compressive strength of carbon foam gradually decreases from 83.03 MPa to 24.52 MPa. The compressive and flexural strengths of obtained GCF/PyC composites first increased and reached the peak values, then decreased. The maximum compressive and flexural strengths of GCF1/1-C are measured to be 120.5 MPa and 92.21 MPa, which are 135 % and 267 % higher than that of carbon foam GCF1/1. The thermal conductivity of carbon foam decreases from 1.22 W/m·K to 0.75 W/m·K with the porosity increase. For GCF/PyC composites, thermal conductivity first increases to 4.41 W/m·K then decrease, and GCF2/1-C has lowest thermal conductivity of 3.26 W/m·K among all GCF/PyC samples, which is 160 % higher than that of GCF2/1 before densification. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Glassy carbon

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