CARBON
·
2024
·
IF 10.5
Kaiming Wang,Xin Gong,Xinyu Ye,Jinxu Li,Yang Yang,Huacheng Zhu,Yuesheng Wang,Liping Yan,Yanping Zhou
Biomass char is very promising in developing microwave absorbing materials with low minimum reflection loss (RL min ) and ultrawide effective absorption bandwidth (EAB) owing to its low cost and natural availability of various pores, but however is facing a dilemma between the conduction loss and interface polarization loss where new heating technology is highly desirable. In this work, a microwave confined plasma/microwave hybrid heating technology is developed based on the unique interaction between porous carbon and microwave for simultaneous enhancement of conduction loss and interface polarization loss of cellulose char. Compared to the conventional heating product at the same temperature, the as-prepared microwave char showed almost doubled conductivity which is beneficial for conduction loss, higher content of C –O bond that has longer bond length and dielectric susceptibility than C O bond, and more condensed carbon nanoparticles embedded in the carbon matrix which is responsible for increasing the heterointerface polarization loss. As such the tangent loss of MW900-40 % ranges from 0.69 to 0.97 while that of CH900-40 % only ranges from 0.34 to 0.64 in the frequency range of 2.0–18.0 GHz. Further, based on multilayer impedance gradient principle, a double-layer absorber is constructed with products of different MW900 loading, yielding a RL min of −59.0 dB at 15.9 GHz with an EAB of 10.0 GHz at 4.0 mm, whose working mechanism is comprehensively studied by simulations in terms of impedance matching and microwave dissipation distribution.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Minting Du,Mengke Peng,Bingjie Mai,Fenyan Hu,Xiaodan Zhang,Yashao Chen,Changhao Wang
Magnesium (Mg) alloy shows potential application in orthopedic operations owing to its biodegradability, biocompatibility and natural bone-like mechanical properties . However, its susceptibility to corrosion in the physiological environment and bacterial infection after implantation severely limits the clinical application of Mg alloy. In order to enhance the corrosion resistance and antibacterial activity of Mg alloy to meet specific requirements of orthopedic applications, multifunctional hybrid inorganic-organic coatings were rationally designed and fabricated on the surface of Mg alloy using MgO coating, ZnO nanorods (ZnONRs), and dextran sulfate sodium/lysozyme (DS/Lys) polyelectrolyte multilayer film . It was characterized using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD). The resultant Mg-MgO-ZnONRs-(DS/Lys) 30 remarkably enhanced the corrosion resistance of Mg alloy by decreasing the corrosion current ( i corr ) in four orders of magnitude. The biological assays showed that compared with the pristine Mg alloy, Mg-MgO-ZnONRs-(DS/Lys) 30 exhibited good hemocompatibility and excellent antibacterial activity (>99.9% against S. auerus and E. coli ). This study provides a simple and effective way to modify the Mg alloy material as potential implant biomaterials and we anticipate this strategy will promote the broad application of Mg alloy in clinical trials.
研究领域:
生物医学工程
·
材料科学
·
表面改性
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Hairui Weng,Yuhao Zou,Chenyao Wang,Mingjuan Li,Luyi Sun,Xinzhi Chen
All-solid-state lithium batteries (ASSLBs) are considered to be the next generation of the most promising lithium battery technology due to their energy density, safety and stability. Nevertheless, the solid-state electrolyte (SSE), a critical element in ASSLBs, encounters notable obstacles like limited ionic conductivity and elevated interfacial impedance. A sandwich like composite solid electrolyte is proposed to address the above issues. This design features a ceramic-rich (CR) solid electrolyte membrane sandwiched between two polymer-rich (PR) solid electrolyte membranes (named PR-CR-PR). The CR membrane offers mechanical strength, preventing lithium dendrites from penetrating, while the PR membranes enhance interfacial contact with the electrodes. The PR-CR-PR electrolyte not only enhances the stability of Li metal, enabling stable cycle for over 500 h, but also extends the electrochemical window to 6.17 V. Electrochemical results show that the LiFePO 4 /PR-CR-PR/Li battery achieves a specific capacity of 161.97 mAh g −1 at 0.2 C. The battery still maintains a high discharge specific capacity of 147.72 mAh g −1 and a capacity retention rate of 91.2 % after 500 cycles. This study demonstrates a promising strategy to prepare low-cost and highly stable electrolytes using a multilayer design for further mass production of high energy density ASSLBs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Engineering Materials
·
2023
·
IF 0
Bozhen Wu,Honghao Zhu,Yuhao Yang,Kaiqi Zhu,Renrong Liu,Yulin Li
With the integration and high power of electronic devices, as well as the rapid development of 5G and new energy, the application of materials with good flexibility, mechanical properties, and multifunctional properties is increasing. In this study, we prepared polyamide composite films with high thermal conductivity (TC) (33.27 W/(m·K)), excellent electromagnetic interference shielding effectiveness (EMI SE) (63.0 dB), and good mechanical properties (tensile strength 44.5 MPa, toughness 13.8 MJ/m3) by using hierarchical design and recombination strategy. The top layer of the composite film is a graphene/graphene oxide film (GNP/GO) as the TC and EMI shielding layer. The base layer of the composite film is a commercially available polyamide mesh to improve mechanical properties. The dense Ni layer was deposited on the polyamide fabric by the electroless nickel plating process, which improved the shielding performance against electromagnetic interference. The water-borne polyurethane (WPU) cladding is further coated on the nickel-plated polyamide fabric to protect the cladding and bond the top and base layers simultaneously. In addition, the practical application of the film in thermal management and electromagnetic shielding fields is also proved through the application experiments.
研究领域:
材料科学
·
热管理
·
电磁兼容性
✓ 已验证
DOI
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2020
·Vol. 167
·期 10
·100528
·
IF 3.721
Senhao Wang,Shuai Li,Bin Wei,Xia Lu
Solid-state rechargeable lithium batteries are considered as one of the promising energy storage technologies due to their safety and high energy density. While developing better solid-state batteries is hampered by the poor interfacial compatibility. In this work, one novel design of buffer layer using the Li1+xAlxTi2−x(PO4)3 (LATP) solid electrolyte is reported to address the poor compatibility and big migration gap at the electrode-solid electrolyte interface. Such a facile design works well on facilitating the interfacial ionic inter-diffusion by padding the gap of ionic conductivity between electrode and electrolyte, as well as passivating the electric activity of interface region to avoid the continuously interfacial degradation, hence makes the interface more homogeneous and intimate to deliver the superior electrochemical performance. Moreover, upon cycling, a new carbon-rich interphase is revealed from electron microscopy in the interface region, which probably plays an important role in stabilizing the structure and regulating the electron/ion fluxes. All these findings provide a rewarding avenue to resolve the interfacial issues of solid-state lithium ion batteries and the integrated electronic devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Wenbo Sui,Wangzu Li,Zhongshuo Zhang,Weixing Wu,Zhanyou Xu,Ying Wang
Electrochemical synthesis of hydrogen peroxide (H 2 O 2 ) through 2-electron oxygen reduction reaction (ORR) is a sustainable alternative to the industrialized anthraquinone oxidation process . Gas-diffusion electrode (GDE) is employed to overcome the mass transport limitation of O 2 to deliver high current density . However, long-term stability in practical electrolyzer with GDE is still challenging due to electrode flooding. Here, we propose a double catalyst layer (CL) strategy with gradient Nafion distribution to balance the mass transport of O 2 and H + and improve the flood-proof ability. Our design achieved H 2 O 2 production rate up to 2.16 mmol h −1 cm −2 with a selectivity of about 90% and enabled 48 h stable electrolysis at 100 mA cm −2 . Compared to the state-of-the-art H 2 O 2 electrosynthesis system in acidic media, the full-cell voltage improved significantly to 2.3 V at 100 mA cm −2 , indicating its potential for practical production and utilization.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yijie Duan,Yifu Gao,Zetao Ren,Yehui Li,Zhichun Si,Hongda Du,Yanbing He,Dong Zhou,Wei Lv,Feiyu Kang
Water scarcity has become a global problem and caused a lot of conflicts. Atmospheric water harvesting (AWH) is a promising way to address water shortage issue. However, traditional adsorbent materials such as silica gels and zeolites suffer from low water productivity and high regeneration temperature. Hygroscopic salts like LiCl are regarded as a perspective substitution. Salt-modified metal organic frameworks (MOFs) and hydrogels are employed to alleviate the salt aggregation but they are limited to expensive fabrication or sluggish adsorption kinetics. Herein, we demonstrate an asymmetric double-layer design of LiCl@CC (carbon cloth)/PAM with separated function of water adsorption/desorption and water storage in different layer. This double-layer design not only enhances the mechanical properties but also shows an improved water adsorption kinetics compared to common salt-composite hydrogels. In experimental test, the LiCl@CC/PAM exhibits excellent water uptake of 1.5 g g −1 under 60 % RH in 4 h and fast water desorption under sunlight in 1.5 h. In outdoor test, LiCl@CC/PAM based device presents a daily water uptake of 5.12 g g −1 day −1 . Meanwhile, all the materials used and fabrication process are feasible to scale up, which provides a possible solution to the global crisis of water scarcity.
研究领域:
材料科学
·
环境科学
·
水资源工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Wei Chen,Luyao Ding,Qingbiao Li,Jiahui Shen,Jiajia Zheng,Xiping Li,Zhonglue Hu,Shaohua Jiang,Shanglin Xiao,Yiming Chen
The integration of broadband sound absorption with environmental sustainability remains a key challenge in advanced material design. In this work, an innovative 3D-printed cellulose nanofibril (CNF) architecture with a customizable hierarchical “hole-cavity unity” structure was proposed for highly efficient sound absorption. This multi-scale structural design strategy synergistically coupled the perforated-panel acoustic principles with nanoscale viscous dissipation mechanisms. By leveraging the shear-thinning behavior of CNF inks and the precision control of direct ink writing, the sub-millimeter periodic pore arrays were embedded within the continuous nanofibrous network, enabling programmable structural tunability across multiple pore scales. Systematic regulation of infill ratio and sample thickness yielded high sound absorption coefficients (>0.7) over an ultra-broad frequency range of 1.2–6.3 kHz. Combined with low shrinkage, structural customizability, low density, and rapid environmental degradability, the fully bio-based 3D-printed CNF architectures are expected to offer a promising and sustainable solution for developing next-generation acoustic materials for noise control applications.
研究领域:
材料科学
·
声学工程
·
纳米技术
·
可持续材料
·
生物基材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Yingying Zhou,Chenyu Zhu,Haonan Du,Jinlei Wu,Chaoqun Yang,Shanshan Xiao,Wen Zheng,Rui Xin,Yikun Yang,Enyuan Zhen,Zhaowen Ren,Hui Xie
Magneto-carbon composites are promising materials for mitigating electromagnetic pollution due to combined dielectric and magnetic loss mechanisms. However, such absorbers often have unsatisfactory wave-absorbing properties due to the difficulty in matching the magnetic permeability with the dielectric properties. The multilayered hollow carbon cubes anchored to a ternary FeCoNi alloy were fabricated using a self-tempered engineering strategy. The multilayer structures are formed in two steps and have an iron cobalt-nickel alloy core encapsulated in a hollow cubic carbon shell. Initially, a phenolic resin (PR)-coated FeCoNi-Prussian blue analogue (PBA) was prepared, followed by high-temperature vacuum pyrolysis. The inner carbon layer, derived from PBA, exhibits high crystallinity, while the outer PR-derived carbon layer is amorphous, preventing agglomeration of the carbonized FeCoNi alloy particles. The amorphous outer layer enables electromagnetic waves to be better absorbed and consumed within the absorber due to its ability to effectively modulate conductivity and impedance matching. By leveraging heterogeneous interface polarization and modulating electrical conductivity through control of graphite crystallinity, a minimum reflection loss (RL min ) of −74.2 dB and an effective absorption bandwidth (EAB) of 5.8 GHz across the 2–18 GHz range were achieved. The study provides an effective approach to broaden the application prospects of advanced magneto-carbon composite absorbers by using a multilayer structure to achieve a balance between magnetic loss and dielectric properties.
研究领域:
材料科学
·
电磁学
·
纳米技术
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Ye Peng,Ja-Yeon Choi,Kyoung Bai,Liliang Tian,Shijun Liao,Yi Zhang,Dongchu Chen,Dustin Banham
Membrane electrode assemblies (MEAs) for proton exchange membrane fuel cell (PEMFC) applications must survive fuel starvation events which occur when the flow field becomes blocked by dust/debris/or ice (during freeze events) leading to high (>2 V) potentials at the anode. While most research has focused on optimizing these ‘reversal’ catalysts, recent work has also demonstrated that anode layer thickness/structure has an enormous impact on anode durability. In the present work, the impact of catalyst layer structure is studied in more detail, with a focus on understanding the mechanism for this improvement. The effect of both anode layer thickness as well as the spatial distribution of Ir within the anode layer is evaluated. The longest reversal time is found to result from thin layers, or placing the Ir adjacent to gas diffusion layer (GDL) interface. While both approaches lead to improved reversal times, reducing anode layer thickness is found to be a more promising approach as it results in less degradation during reversal, and is easier to manufacture vs. selectively placing the Ir adjacent to the GDL.
研究领域:
材料科学
·
电化学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lidong Xia,Zhongming Li,YuKun Jin,Shuoshuo Kong,Junjie Tan,Bin Li,Haili Zhao,Tao Chen
Nanozymes, while promising as next-generation biocatalysts, face translational challenges such as insufficient atomic synergy, environmental interference, and spectral mismatches in portable biosensing. To address these limitations, we developed a CuIn 2 S 4 nanozyme with an “atomic-mesoscopic-macroscopic” hierarchical design, achieving robust sweat glucose monitoring through synergistic mechanisms. Leveraging the AB 2 X 4 crystal framework, we engineered C In bimetallic coordination with d-p orbital hybridization, creating localized charge-enriched regions that reduced the adsorption energy barrier of H 2 O 2 ( ΔE = −1.51 eV, bond elongation 0.03 Å), yielded preferable peroxidase-like (POD-like) activity ( V max = 9.63 × 10 −8 M·s −1 ), with hydroxyl radical (·OH) generation confirmed by EPR spectroscopy. To mitigate signal drift caused by dynamic sweat conditions (pH 4.5–7.0, ionic strength 0.12–0.18 M), we employed response surface methodology integrating Plackett-Burman screening and central composite design. This approach resolved nonlinear pH-ionic strength coupling (X 1 × X 6 : β = −0.044) under simulated sweat environments (pH 5.5, 0.3 M NaCl). Building on these advancements, we designed a thermo-responsive F127@GOx@CuIn 2 S 4 hydrogel platform. Its sol-gel phase transition (critical temperature: 23.5 °C) spatially confined glucose oxidation cascades: GOx-mediated H 2 O 2 production triggered ·OH-driven chromogenic reactions using o -phenylenediamine (OPD) or 4-aminoantipyrine (4-AMAP) as indicator. A smartphone-based RGB analysis optimized for the blue channel ( R 2 = 0.97) enabled precise classification of sweat glucose levels into normal, prediabetic, and diabetic ranges. This study establishes a hierarchical multi-scale engineering framework - spanning atomic design, mesoscale regulation, and macroscopic application - to advance nanozyme applications in non-invasive diagnostics. Our work provides a blueprint for real-time metabolic monitoring through synergistic material innovation and portable detection technologies.
研究领域:
纳米技术
·
生物传感
·
酶模拟
·
生物医学工程
·
材料科学
·
分析化学
✓ 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）