JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wanxing Zhang,Pengcheng Mao,Yuhang Jin,Hai Ming,Zhipeng Li,Danfeng He,Hongyu Sun,Yanlong Yu,Yanguo Liu
Niobium pentoxide (Nb 2 O 5 ) anodes have attracted much attention as a candidate for the next generation lithium-ion batteries (LIBs) due to the unique physical and chemical properties. However, some critical issues, like low electronic conductivity, inefficient ionic diffusion, must be addressed before practical applications. In this work, we employed a facile NaBH 4 engaged chemical reduction method to modify Nb 2 O 5 anodes. Microstructure and surface chemistry analysis indicated that the Nb 2 O 5 materials have micro/nanoscale three-dimensionally interconnected morphology, and contain three different phases (T-, M-, and H-Nb 2 O 5 ). More importantly, oxygen vacancies are introduced by the NaBH 4 reduction treatment, and the oxygen vacancy amount can be modulated by changing the NaBH 4 concentration. As anodes for LIBs, the optimized sample exhibited a reversible capacity of 252.2 mAh·g −1 after 100 cycles at a current density of 1 C, and a reversible capacity of 139.4 mAh·g −1 at a large current density of 10 C. The electrochemical performance enhancement can be attributed to the combination of multiscale structural design, i.e., oxygen vacancy, nanoscale phase interface , and micro/nanoscale three-dimension assembly. We expect the present synergistic strategy can be employed to manipulate the key structures in different functional materials for broader applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zimeng Zhao,Haoyun Li,Yangyang Peng,Jinlian Hu,Fengxin Sun
Smart clothing with adaptive personal thermal management functionality is highly desirable for wearing comfort and energy efficiency. However, due to the lack of common materials that can fabricate dynamic thermoregulation fabrics, translating the existing technologies to commercial applications remains challenging. Herein, leveraging an industrial textile manufacturing approach, a hierarchically programmed meta-louver fabric with switchable modes for both hot and cold is developed. The efficacy of adaptive pore channels by manipulating the orientation of chiral knit loops to regulate water evaporation, as well as thermal convection and radiation, is experimentally demonstrated. In sharp contrast to current pore-actuated smart textiles, the designed meta-louver fabric gains its adaptive thermoregulation capacity directly from the multiscale textile structure engineering, ranging from the single-helical-fiber enabled yarn actuators to pre-tension induced chiral-helical knit loops. This strategy is shown to be also effective for other fiber materials, such as cotton, and thus provides a universal paradigm for a new family of metamaterials by engineering the interconnection of multiscale structures.
研究领域:
材料科学
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纺织工程
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Aijaz Ahmed Babar,Xinglei Zhao,Xianfeng Wang,Jianyong Yu,Bin Ding
Hypothesis Functional textiles engineered for maintaining body comfort by fast sweat release using the directional moisture transport concept are in high demand. However, designing these functional textiles remains a critical job and generally requires multi-step complex fabrication routes. In this regard, developing one-step strategy to fabricate multi-scaled, inter-connected nonwoven-nanofiber/nets hierarchical fibrous composite membranes with asymmetric wettability for enhanced directional moisture transport would be a very fruitful approach. Experiment Composite membranes were fabricated by the rational combination of commercial polyethylene terephthalate nonwoven (CNW) as hydrophobic layer, and polyamide and silver nanoparticles (PA-Ag) nanofiber/nets as hydrophilic layer via one-step electrospinning process. Findings The resultant CNW/PA-Ag nanofiber/net composite membranes were carefully investigated for water vapor transport, moisture management performance, and antibacterial activity . The subsequent membranes not only exhibit exceptionally high one-way moisture transport index (1253%), considerably high water vapor transport rate (11.45 Kg m -2 d -1 ), and overall moisture management capacity (0.91), but also offer high resistance of 16.9 cm H 2 O to prohibit the moisture drive in the opposite way, and considerable antibacterial activity against Escherichia coli and Staphylococcus aureus . The effective one-step fabrication of such fascinating directional moisture transport membranes with decent antibacterial activity opens a new intuition into the designing of novel functional materials for rapid sweat release and personal drying applications.
研究领域:
材料科学
·
纺织工程
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Qifeng Mu,Qingsong Zhang,Wen Yu,Mengling Su,Zhongyu Cai,Kunpeng Cui,Yanan Ye,Xiaoyun Liu,Lingli Deng,Bingjie Chen,Ning Yang,Li Chen,Lei Tao,Yen Wei
Hydrogels with ultrafast response to environmental stimuli, possessing robust structural integrity and rapid self-recovery, have been considered as promising platforms for numerous applications, for example, in biomimetic materials and nanomedicine. Inspired by the bundled fibrous structure of actin, we developed a robust and ultrafast thermoresponsive fibrous hydrogel (TFH) by fully utilizing the weak noncovalent bonds and strong covalently cross-linked semiflexible electrospun fibrous nets. The TFH exhibits an ultrafast response (within 10 s), rapid self-recovery rate (74% within 10 s), tunable tensile strength (3–380 kPa), and high toughness (∼1560 J/m2) toward temperature. A multiscale orientation is considered to play a key role in the excellent mechanical properties at the fibrous mesh, fiber, and molecular scales. Furthermore, to take advantage of this TFH adequately, a novel kind of noodle-like hydrogel for thermo-controlled protein sorption based on the TFH is prepared, which exhibits high stability and ultrafast sorption properties. The bioinspired platforms hold promise as artificial skins and “smart” sorption membrane carriers, which provide a unique bioactive environment for tissue engineering and nanomedicine.
研究领域:
材料科学
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生物医学工程
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 13
·2207233
·
IF 15.1
Kaiyue Cao,Ying Zhu,Zihao Zheng,Wanke Cheng,Yifei Zi,Suqing Zeng,Dawei Zhao,Haipeng Yu
Structure design provides an effective solution to develop advanced soft materials with desirable mechanical properties. However, creating multiscale structures in ionogels to obtain strong mechanical properties is challenging. Here, an in situ integration strategy for producing a multiscale-structured ionogel (M-gel) via ionothermal-stimulated silk fiber splitting and moderate molecularization in the cellulose-ions matrix is reported. The produced M-gel shows a multiscale structural superiority comprised of microfibers, nanofibrils, and supramolecular networks. When this strategy is used to construct a hexactinellid inspired M-gel, the resultant biomimetic M-gel shows excellent mechanical properties including elastic modulus of 31.5 MPa, fracture strength of 6.52 MPa, toughness reaching 1540 kJ m −3 , and instantaneous impact resistance of 3.07 kJ m −1 , which are comparable to those of most previously reported polymeric gels and even hardwood. This strategy is generalizable to other biopolymers, offering a promising in situ design method for biological ionogels that can be expanded to more demanding load-bearing materials requiring greater impact resistance.
研究领域:
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2023
·
IF 11.2
Xinyue Liu,Changyu Xi,Wei Liang,Jiayu Zheng,Wenqing Zhao,Xiangzhen Ge,Huishan Shen,Jie Zeng,Haiyan Gao,Wenhao Li
Electron beam irradiation (EBI) as a green technological method for starch modification can generate starch-based materials with new functions. This study modified maize starch by heat-moisture treatment (HMT) for 1 h and 3 h, and EBI with various intensities (5 kGy and 10 kGy), and their effects of treatment sequence on the multiscale structure, physicochemical properties and in vitro digestibility were investigated. EBI or HMT alone did not change the granule morphology and crystalline type, but reduced the crystallinity and molecular weight and increased the resistant starch content. HMT alone had no significant effect on the solubility of starch, while EBI led to a considerable increase in the solubility of maize starch. The combined treatment of EBI and HMT aggravated apparent viscosity reduction, and the HMT starch pretreated with EBI had a smaller molecular weight and lower viscosity. In contrast, post-EBI samples had higher solubility and RS content. Primarily, it has excellent potential for producing low-viscosity and high-solubility starch foods .
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhaoxian He,Li Jiang,Kunkun Wang,Shan Chen,Manli Mei,Chengyi Sun,Yuqing Hu,Anjun Li,Xianfeng Du
This study systematically investigated the multi-scale structure of glutinous rice starches (WK1, WK2, WK3, TN2072, and HY) from five varieties, and analyzed physicochemical properties and in vitro digestibility to reveal structure-property relationships. TN2072 starch exhibited distinctive structural characteristics showing a lower gyration radius (245.77 nm) and crystalline lamellar thickness (5.7249 nm), demonstrating a more compact molecular structure than those of the other starches. The proportion of short chains of amylopectin (DP 6–12, 23.09–42.16 %) was negatively correlated with both ΔH (7.91–11.23 J/g) and gelatinization temperature (70.15–80.70 °C), while showed positive correlation with peak viscosity (2185–2866 cP). Structural parameters of starch such as high double helix content, high relative crystallinity, and low lamellar thickness were associated with lower enzymatic hydrolysis rates in starch and a high content of resistant starch. Meanwhile, a high proportion of medium and long chains (DP ≥ 13) was conducive to the formation of ordered, compact crystal and lamellar structures, which was the key determinant for high gelatinization temperature and low digestibility. These findings revealed that the multi-scale structure of glutinous rice starch varied with different varieties, and determined the physicochemical properties and digestibility, providing a theoretical foundation for variety selection for specific industrial applications.
研究领域:
食品科学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
3D Printing and Additive Manufacturing
·
2020
·Vol. 7
·期 3
·115-125
·
IF 3.579
Yue Wang,Yancheng Wang,Deqing Mei
Digital light processing (DLP)-based printing process has been used to print microfeature-sized constructs and architectures for biomedical applications; the key challenge is to achieve both large printing size and high accuracy at the same time. Here we reported a scalable DLP-based three-dimensional (3D) printing system with scalable resolution and building size, which was used for printing of multiscale hydrogel fractal bionic channels. Scalable printing was achieved by moving the convex lens of the printing system, and thus, each single micromirror of the digital micromirror device chip corresponded to the single-pixel size scaling from 6 to12 μm. Using this system, we were able to use poly (ethylene glycol) diacrylate to fabricate a variety of multiscale architectures, such as regular fractal Y-shaped channels, and more irregular and intricate geometries, such as biomimetic capillary vascular networks. Blue and red food dye solutions were able to freely fill all these channels in the scaffolds, from the trunk (>1500 μm in width) to small branch (∼30 μm in width) by capillarity. Cell experiments were carried out to certify the biocompatibility of printed multiscale biomimetic channel networks. This work reveals significant progress in printing multiscale constructs with both large printing size and high precision in scalable DLP-based 3D printing.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Fiber Materials
·
2025
·
IF 21.3
Li Xiaoyan,Guo Zhiguang,Ji Yating,Du Peibo,Wang Jun,Xu Bi,Ge Fengyan,Zhao Yaping,Cai Zaisheng
Passive radiative thermal management holds substantial potential for enhancing energy efficiency and sustainability. However, few research efforts have addressed the integration of mechanical robustness and durability with the distribution and composition of photonic structures within materials. Silk fibers, known for their distinctive hierarchical morphological structure, offer a solution to these challenges by providing exceptional optical and mechanical properties. Inspired by this, we developed a silk-like tough metafiber (PMABF) that incorporated multiple scatterers through a multi-scale structural construction of nanofiber aggregates and molecular interface engineering. We show that fabrics woven with PMABF can provide high mid-infrared (MIR) emissivity (98.6%) within the atmospheric window and 86.7% reflectivity in the solar spectrum, attributed to its ellipsoidal photonic structure featuring by surface micro-/nano-particles and numerous internal voids. Through mature and scalable industrial manufacturing routes, our metafibers show excellent mechanical strength, hydrophobicity and thermal stability while maintaining effective passive radiative cooling. Practical application tests demonstrated that molecules introduced during the heterogeneous composite process significantly enhanced the metafiber’s tensile strength (125%) and compressive stress (261.5%) by forming junction welds among the nanofiber backbones to efficiently distribute the external forces. Furthermore, the superior thermal stability and flexibility of PMABF open abundant opportunities for diverse applications with demanding thermal management requirements, such as thermal protection and multi-scenario thermal camouflage. Graphical
研究领域:
材料科学
·
光学工程
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Xuefeng Zhang,Yong Liu,Shangli Dong,Jianqun Yang,Xudong Liu
MXenes is one of the most promising flexible electrode materials for supercapacitor . However, the nanosheets in the MXenes electrode by vacuum filtration are prone to restack during preparation, which largely hinders the full utilization of their surfaces and active sites. In this contribution, the self-restacking of MXene nanosheets (prepared by etching with HCl + LiF) could be prevented effectively by introducing MXene nanoparticles (prepared by etching with HF) as interlayer spacers. The Ti 3 C 2 T x -10 flexible (the electrode with 10% mass fraction nanoparticles) exhibits an excellent specific capacitance of 372 F g −1 at 1 A g −1 which is much higher than that of Ti 3 C 2 T x film, and an impressive cycling stability up to 95% capacitance retention after 5000 cycles. The significant improvement in electrochemical performance is mainly due to that the open sandwich-like structure of the flexible electrode based on multi-scaled Ti 3 C 2 T x provides huge surface area and more active sites.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Juntao Huang,Saifei Wang,Zhifei Zhang,Mingli Chen,Han Wang,Haihua Huang,Qian Wang,Jigong Hao,Wei Li,Juan Du,Mahesh Kumar Joshi,Peng Fu
Ceramic dielectric capacitors have gained significant attention due to their ultrahigh power density, current density, and ultrafast charge–discharge speed. However, their potential applications have been limited by their relatively low energy storage density. Researchers have employed various approaches to enhance their energy storage density. In this study, (1 – x)(Bi0.5Na0.5)0.7Sr0.3TiO3–xCa(Mg1/3Ta2/3)O3 ceramics were prepared via a solid-phase reaction, and the effect of their structure on the energy storage properties was investigated. The results indicate that the introduction of Ca(Mg1/3Ta2/3)O3 significantly alters the multiscale structures of the (Bi0.5Na0.5)0.7Sr0.3TiO3 ceramic, including the transformation from the T-phase to the C-phase, refinement of ceramic grains, and the formation of polar nanoregions (PNRs), accompanied by an increase in the bandgap and relaxation degree. These structural changes collectively contributed to the improved overall energy storage properties of the modified ceramics. Notably, the 0.92(Bi0.5Na0.5)0.7Sr0.3TiO3–0.08Ca(Mg1/3Ta2/3)O3 ceramic demonstrated a recoverable energy storage density (Wrec) of 8.37 J/cm3 with an energy storage efficiency (η) of 87.7% at an electric field of 530 kV/cm. It also exhibited good temperature stability (25–120 °C), frequency stability (1–100 Hz), and fatigue stability (1–105). Furthermore, it displayed exceptional charge and discharge properties, with the discharge energy density (WD), discharge time (t0.9), current density (CD), and power density (PD) attaining 4.06 J/cm3, 35.2 ns, 2143.28 A/cm2, and 460.71 MW/cm3, respectively. These findings suggest that modified (1 – x)(Bi0.5Na0.5)0.7Sr0.3TiO3–xCa(Mg1/3Ta2/3)O3 ceramics are promising candidates for high-power pulsed electronic systems.
研究领域:
材料科学
·
无机非金属材料
·
电介质物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2017
·Vol. 4
·期 20
·1700490
·
IF 4.279
Qi-Zhi Zhong,Ming-Han Yi,Yong Du,Ai He,Zhi-Kang Xu,Ling-Shu Wan
Micro/nanostructured surfaces with designable wettability show great promise in many fields. This paper reports a new strategy for fabricating superhydrophobic surfaces with tunable water adhesion force by combining multiscale surface structures and mussel-inspired surface chemistry, which can be used for multiple liquid manipulations. Highly ordered porous films prepared by the breath figure method enable convenient construction of surfaces with honeycomb-patterned or nanosized pincushion-like structures. Multiple liquid manipulations including no-loss transportation of water droplets, water collection, programmable movement of water droplets, and chemical reaction monitoring are demonstrated on the micro/nanostructured surfaces. The proposed method is facile, energy-efficient, and can be conducted for the preparation of superhydrophobic surfaces with high contrast adhesion patterns.
研究领域:
材料科学
·
表面工程
·
微流体技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）