COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Junjie Zhou,Yike Zhang,Xinyu Wang,Yanan Yang,Xin Wu,Jin Hu,Long Xia
Impedance mismatch and high-temperature oxidation are two main factors that limit the practical application of carbon-based absorbing materials. Although micro/nano-structured composites have been explored to alleviate these issues, they often suffer from dispersion instability and structural fragility. In this work, a coaxial composite fiber microwave absorber (Al 4 C 3 /Al 2 O 3 @C f ) is fabricated using carbon fiber (C f ) as a template and conductive core, with an Al 4 C 3 /Al 2 O 3 ceramic shell grown in situ via a vapor–solid reaction. Compared to pristine C f , which exhibits negligible absorption, the optimized composite achieves a minimum reflection loss of −49.27 dB, attributed to interfacial polarization and a built-in capacitor-like structure. Meanwhile, the material also features excellent oxidation resistance and thermal insulation (0.0567 W m −1 K −1 at 100 °C). This study presents a structurally controllable, thermally robust absorber design that overcomes key limitations of traditional carbon-based materials, offering a promising solution for next-generation electromagnetic protection in aerospace and harsh environments.
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION AND FLAME
·
2025
·
IF 6.2
Xiaohui Xue,Tuanwei Xu,Bozhi Hu,Wenke Zhang,Jianzhong Liu
In this study, the agglomeration behavior, gaseous combustion products flow velocity and characteristics of condensed combustion products (CCPs) from a HTPB-based solid propellant were systematically investigated under low-pressure and low-temperature conditions. Furthermore, the underlying mechanisms of these environmental effects were discussed. High-speed microscopic imaging was employed to observe and quantify the agglomeration behavior near the burning surface. Meanwhile, the gaseous combustion product stream velocity in this region was analyzed using both kinetic modeling and theoretical calculations. Experimental results show that when pressure decreases from 1 atm to 0.5 atm, the agglomerate occurrence frequency drops by 90.2 %, the average particle size increases by 14.4 %, and the gaseous product velocity rises by 52.1 %. When reducing the ambient temperature from 20 °C to −40 °C leads to an 18.1 % decrease in agglomerate frequency and a 6.5 % reduction in average particle size, while its effect on gaseous velocity remains inconclusive. Characterization of CCPs reveals that both low pressure and low temperature significantly alter the particle size distribution and reduce the combustion efficiency of solid propellants. Within the experimental conditions of this study (0.3 atm to 1 atm, −40 °C to 20 °C), the impact of pressure changes is greater than that of temperature.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Zhe Sun,Tianfu Zhang,Zhehong Lu,Wei Jiang,Zihao Chen,Guangpu Zhang
Designing highly filled energetic composites with minimal micro-interface defects remains a persistent challenge in the aerospace field. Herein, we constructed a room-temperature self-healing energetic polymer by the triple dynamic bonds, which include azido-azido dipolar interaction, aromatic diselenide bonds, and multilevel hydrogen bonds. Controlling these dynamic bonds could influence the intermolecular interactions, microphase separation, and the mobility of polymer segments. As a result, the optimal polymer exhibited excellent mechanical toughness (13.17 MJ/m 3 ), room-temperature healing capacity (91.65 % after 48 h), and high heat release (1197.62 J/g). To confirm the applicability, the energetic composites with 70 wt% solid content were fabricated by shear calendar technology. Thanks to the nanometer-scale interface interaction, the toughness of nanoscale Al-based composites was enhanced by 94.5 % compared to that of their micron Al-based counterpart. Importantly, this method enables the composites to attain effective crack healing at safe temperatures. The present study presents a feasible method to design the safe solid propellant for aerospace applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jingli Zhang,Pan Xue,Danyu Liu,Jiashuai Zhang,Zixin Yang,Yunhui Huang,Yingjia Tong,Huitao Yu,Qufu Wei,Pengfei Lv
Inspired by nature, soft actuators with sensing functions have shown great potential in applications such as dynamic perception, bionic robotics, and smart devices. However, soft actuators with sensing capabilities still suffer from poor stability and slow actuation speed. Herein, the multi-stimulus responsive actuators with sensing functions are fabricated through a judiciously designed amino-functionalized MXene-encapsulated liquid metal nanodroplets (Si-MXene@LM) ink with liquid crystal elastomer (LCE) thanks to strong hydrogen bonding between the -NH and -OH groups to improve stability and actuation speed. When the resulting actuator with sensing function is driven by near-infrared (NIR) light or voltage, it generates a significant actuation strain (45 % in 7 s and 35 % in 15 s) due to the optoelectronic properties of the ink and the excellent responsiveness of the LCE. Importantly, it also has high sensitivity (△R/R 0 = 11.5 %) and outstanding cyclic stability (2500 cycles). As a proof-of-concept, an artificial muscle and intelligent logic circuit based on the actuators demonstrate perfect integration of the actuating and sensing functions, which could not only control of the system, but also sense every actuation state of the actuator. This work is expected to offer new insights into the design of advanced multi-responsive actuators with sensing functions and pave an avenue for the development of multifunctional integrated devices.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Material Cycles and Waste Management
·
2025
·
IF 3
Lou Wen-bo,Liu Dong-yan,Zhao Da,Wang Yun,Sun Zi-cheng,Zou Yi,Niu Xiao-wei,Cheng Quan-guo,Li Jian-zhong,Liu Hong-hui
The recovery of NCM (LiNi x Co y Mn 1-x-y O 2 , abbreviated as NCM) cathode materials from retired lithium-ion batteries is a research hotspot in resource recycling field. Nevertheless, due to aluminum impurities mixed in raw materials, Li(I) and Al(III) ions are easy to combine to form water-insoluble LiAlO 2 during reduction, affecting Li(I) ions’ water-leaching efficiency. In this study, the LiAlO 2 formation environment is analyzed. Thermodynamic analysis reveals that there is generally less spontaneity in the reaction of Li (I) ions with aluminum monomers compared to Al 2 O 3 , and the introduction of CO 2 can inhibit Li-Al-O substance production. Li-Al binding experiments show that there is almost no direct reaction between Li 2 CO 3 and aluminum monomers, but under Ar atmosphere, Li 2 CO 3 and Al 2 O 3 can easily lead to Li-Al binding, a kinetic analysis considers that binding is controlled by chemical reaction, with an activation energy of 57.78 kJ/mol, and the activation energy increases to 88.028 kJ/mol with CO 2 atmosphere. Under reduced optimization conditions (reduction temperature: 500 °C, time: 6 h, and m NCM : m Al = 1: 0.25), the carbonation water-leaching efficiency can reach 95.1% for Li(I) ions and less than 1% for Ni(II), Co(II), Mn(II), and Al(III) ions. Thus, this work offers a theoretical basis for the industrial Li(I) ions’ recovery from aluminum-containing NCM materials.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Shen Huasen,Li Zhaohuai,Li Jiantao,He Qiu,Li Mengjun,Tian Yunan,Wu Guoning,Zhao Yan,Zhang Xuanxuan,Xiao Jingjing,Amine Khalil,Li Yuyu,Xie Ming,Lu Jun
The growth of lithium (Li) dendrites and the accumulation of dead Li (i.e., Li metal regions which are electronically disconnected from the current collector) significantly undermine the safety and performance of Li metal batteries. This study employs kilogram–scale atomic layer deposition technology to construct zinc oxide with a preferential (002) crystal orientation, which homogeneously forms on commercial carbon nanotube papers. Our approach emphasizes the importance of achieving a moderate Li adsorption energy and low Li migration energy barriers to suppress Li dendrite growth. In this work, we introduce the concept of “catalytic” effect for dead Li reconversion, as validated through time–of–flight secondary ion mass spectrometry, leading to a Li plating/stripping efficiency of 99.89%. The Ah–level Li metal pouch cells with high–nickel positive electrodes achieve a specific energy of 380 Wh kg −1 (based on the mass of the whole pouch cell) and demonstrate stable cycling under demanding conditions. Analysis of the cycled pouch cells confirms the structural integrity and provides insights into the mechanism of the dead Li “catalytic” conversion.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Ali Hammad,Siyi Zou,Fandi Ning,Ghulam Nabi,Yuzhuo Jiang,Bin Tian,Wentao Huang,Muhammad Rashid,Shiqi Zhao,Xiaochun Zhou
Inorganic materials can solve transportable and on-site hydrolytic hydrogen generation issues. CaH 2 /(Al/Si) composites are preferable due to their notable chemical properties. However, these composites require pretreatments, an inert environment, and long hours of physical ball milling for high homogeneity and synergistic effects. CaH 2 also inhibits the hydrolysis reaction by forming its products on the Al/Si surface, which hinders the direct utilization of composites. This work represents the first investigation of NaH-CaH 2 (Al/Si) fuel composites, which greatly overcome these limitations and can be directly used for on-site hydrogen generation and proton exchange membrane (PEM) fuel cells. The NaH-CaH 2 (Al/Si) fuel composites were prepared by using a straightforward mixing method with variable composition ratios, showing high H 2 yield and fuel cell (FC) performance. NaH addition provides the bridge effect, which opens up a new way to enable efficient hydrolysis and greatly enhances the hydrolysis activity of CaH 2 /(Al/Si) composites. The novel fuel composites (NaH-CaH 2 /Al) have extraordinary FC performance and a 0.42 W/cm 2 peak power density greater than commercial hydrogen generators. It provides high H 2 yield 84.4 % for NaH-CaH 2 /Al and 82 % for NaH-CaH 2 /Si compared to NaOH-CaH 2 (Al/Si), NaCl-CaH 2 (Al/Si), and KCl-CaH 2 (Al/Si) composites. The NaH bridge effect hinders the direct water contact and stops the formation of Ca(OH) 2 around Al/Si, which provides adequate pathways for the CaH 2 (Al/Si) hydrolysis. The impressive capabilities of novel fuel composites are anticipated to offer practical uses in fuel cells, automobile applications, and portable/on-board H 2 generation.
✓ 已验证
产品关联
DOI
高影响因子
Energy & Environmental Science
·
2025
·
IF 30.8
Hongyu Qin,Ao Liu,Kefeng Ouyang,Sheng Chen,Shubing Wei,Yan Huang
Sluggish diffusion rate and exceptionally uneven distribution of Zn2+ at the electrode/electrolyte interface under high depth of discharge (DOD) severely limits the advancement of high-energy-density Zn metal batteries (ZMBs). Herein, a hydrated eutectic colloidal electrolyte based on two-dimensional transition metal boride, Mo4/3B2T2 MBene (where T represents -OH and -F), is developed. The good Zn²⁺ affinity of terminal groups of MBene promotes ion diffusion, thus achieves a high Zn²⁺ transference number of 0.91, which significantly enhances and balances the ion concentration at the Zn anode surface, improving the Zn deposition dynamics. As a result, Zn anode with ultrathin thickness of 10 μm demonstrates 900 h of cyclability under ultrahigh DOD of 90%. Additionally, the enlarged Zn||Zn pouch cell with a scale of 10×10 cm2 shows a stable cyclic performance for 500 h at 60% DOD, meanwhile the constructed 2 Ah four-electron Zn||I2 pouch battery delivers an energy density of 158.5 Wh L−1 under the same condition. This work provides a new guideline for the development of high-DOD metal anodes and high-energy-density metal batteries.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Jianhua Xiao,Yang Wang,Huiling Tai,Yadong Jiang,Lijun Tang
The solution-processing technology of organic photodiodes (OPDs) stands as a core advantage distinguishing them from conventional silicon-based devices, offering several design opportunities for macroscopic structural innovations such as special-shaped, large-area, and flexible architectures. The anode interface layer (AIL), an indispensable component in OPD, is highly desired for processing techniques and physicochemical compatibility to meet the demands of high-performance devices. However, viable alternatives to the commercial material PEDOT:PSS remain scarce, with the narrow selection pool of solution-processed AIL materials. Here, a novel solution-processed organic–inorganic hybrid AIL (D149:Cu) is developed with tunable physicochemical properties, which combines the stability/high carrier mobility of inorganic components with the biocompatibility/flexibility of organic counterparts. The D149:Cu layer optimizes interfacial contact and energy level alignment, effectively enhancing photo-generated hole transport while suppressing dark-state electron injection from external circuit, thereby enabling OPDs with lower dark current (4.96 × 10 −9 vs 1.19 × 10 −7 A cm −2 ) and higher specific detectivity (9.09 × 10 12 vs 1.62 × 10 12 Jones) compared to PEDOT:PSS counterparts. Moreover, flexible D149:Cu-based OPD (≈51 µm-thick) is demonstrated, showing exceptional operational stability under mechanical flexing of 1500 bending cycles. This work alleviates the selection limitations of AILs in optoelectronic devices.
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION SCIENCE AND TECHNOLOGY
·
2025
·
IF 1.5
Wenke Zhang,Jianzhong Liu,Huanhuan Gao,Haitian Gong
To investigate the detailed combustion processes of solid propellant components near the burning surface, this study develops a microscopic ignition and combustion experimental method and establishes a corresponding test system. A high-power microscope and image sensor are employed to continuously record the ignition and combustion of thin-film solid propellants (TFSP, AP/HTPB/Al). By integrating existing theories with image processing techniques, the combustion behavior of AP, Al, and the TFSP as a whole is analyzed in detail. A refined combustion surface model is constructed based on decomposition results, offering theoretical support for ignition combustion modeling and its integration with agglomeration models. Quantitative analysis reveals that reducing AP particle size in TFSP significantly enhances burning rate and combustion surface irregularity. This approach enables the observation of finer combustion behaviors and provides a novel perspective for solid propellant ignition and combustion research.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yun-Fan Yan,Yu Shang,Ming-Yu Guo,Shao-Li Chen,Meng Cui,Zhi-Hong Yu,Wei-Xiong Zhang,Xiao-Ming Chen
Perovskite-type (ABX 3 ) oxidizer-fuel-integrated structures have been employed as a reliable platform for one-pot non-covalent assembly of emerging multi-ionic integrated explosives (MIXs) directly from non-energetic organics. Exploring non-perovskite structures to overcome the stoichiometric bottleneck is critical for unlocking design flexibility of these emerging materials, yet remains challenging without guiding principles. Herein, we propose a “interpenetrating dual networks” strategy to design a groundbreaking MIX, (H 2 eda) 2 (NH 4 )(ClO 4 ) 5 (EAP-4, H 2 eda 2+ = ethane-1,2-diaminium). In EAP-4, a scheelite-type network, where NH 4 + and ClO 4 − occupy special positions, interpenetrates with its fluorite-type counterpart (H 2 eda 2+ and the remaining ClO 4 − ions), forming a non-perovskite I 4 1 / a structure. This unique structural feature endows EAP-4 with exceptional positive oxygen balance based on CO 2 (+6.3 %, surpassing all known energetic perovskites), high synthesis efficiency (achieving over 70 % yield within 10 mins), and a high crystal density of 1.912 g·cm −3 . This innovative design establishes EAP-4 as a dual-function material: (1) an explosive with superior synthesis scalability and higher detonation capability than the widely used military explosive cyclotrimethylenetrinitramine (RDX); (2) a solid oxidizer with 24.5-fold higher thermal decomposition efficiency and significantly greater aluminum reactivity compared to the benchmark oxidizer ammonium perchlorate (AP). This work not only provides a non-perovskite paradigm for tuning energetic materials but also facilitates the systematic development of multi-ionic hybrid materials.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mengran Li,Jialing Gu,Qinke Tang,Jiabao Bai,Bin Cui,Ruoyu Ma,Yunfeng Zhu,Rui Shi,Yao Zhang,Jiguang Zhang,Yana Liu,Jun Wang,Zhixin Ba,Xiaohui Hu
Magnesium hydride (MgH 2 ) is a highly promising solid-state hydrogen storage material, but its application is hindered by sluggish kinetics and high operating temperatures. Currently, alloying and catalysis are effective strategies for improving the hydrogen storage performance of MgH 2 , but the designing of a hydrogen ab/desorption system which synergistically combines them remains a challenge. Herein, Mg Al solid solution and intermetallic compounds (Al species), and a spherical Nb-doped TiO 2 (Nb-TiO 2 ) were introduced into Mg/MgH 2 to enhance the hydrogen storage performance. Al species significantly enhanced the dehydrogenation thermodynamics of Mg 90 Al 10 - 15 at.% Nb-TiO 2 , while improving the hydrogen ab/desorption kinetics of the composite synergistically with the Nb-TiO 2 . Density functional theory (DFT) calculations revealed that the synergism of Al species and Nb-TiO 2 led to preferential adsorption of H atoms at the interfaces of Nb-TiO 2 and Mg 17 Al 12 , with abundant electron transfer. The dehydrogenation enthalpy ( ΔH ) of Mg 90 Al 10 - 15 at.% Nb-TiO 2 decreased from 80.86 (MgH 2 ) to 69.05 kJ/mol, while its hydrogen desorption apparent activation energy ( E a ) decreased from 146.40 (MgH 2 ) to 88.80 kJ/mol simultaneously. The composite could absorb 4.70 wt% H 2 within 2000 s at 200 °C and showed a dehydrogenation onset temperature of 209 °C. This work reveals a synergistic effect between alloying and catalysis, advancing both the performance enhancement strategies and the mechanistic understanding of Mg-based hydrogen storage materials.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）