ELECTROCHIMICA ACTA
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2022
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IF 7.336
Sikang Wei,Yang Xu,Shihong Tian,Zhaohui Han,Lei Xu
In this study, Al-Mg-Sn-Ga anode material prepared by heating up to 800 °C in microwave field under different powers and heating up to 800 °C in conventional field is compared. The microstructure and corrosion morphology of aluminum alloy anode are observed by electron backscatter diffraction(EBSD) and scanning electron microscopy(SEM), and Tafel polarization curve , electrochemical impedance spectroscopy (EIS) and constant current are characterized by different melting modes. The results are showed that microwave can change the grain orientation of aluminum alloy anode and corrosion forms, compared to the conventional technology, the microstructure of the alloy electrode material can grow preferentially at (001), improve alloy anode electrochemical properties , by pitting corrosion forms into a uniform corrosion , improves the corrosion resistance of the anode and the anode utilization. At the same time, aluminum alloy anode has excellent discharge performance under microwave 2000 W treatment. The energy density and capacity density are 2729.3 Wh·kg −1 and 2596.6 mAh·g −1 , respectively, which are 44.03% and 42.26% higher than those of conventional muffle furnace melting. Therefore, microwave technology can improve the electrochemical performance by affecting the microstructure of alloy materials.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2018
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IF 3.779
Zan Jiang,Jianguang Yuan,Huanqing Han,Ying Wu
As an important member of complex hydrides , Mg(BH 4 ) 2 has a high gravimetric capacity (14.9 wt%). In this study, the Mg(BH 4 ) 2 was synthesized by the ion exchange method. Afterwards, the Mg(BH 4 ) 2 composites with different amounts (2, 5, 10, 25 and 50 wt%) of carbon nanotubes (CNTs) were prepared by mechanical milling. Effects of the CNTs on the microstructural evolution and hydrogen storage properties were investigated. The onset desorption temperature of the Mg(BH 4 ) 2 -5 wt% CNTs is decreased to lower temperature around 120 °C from 275 °C. The desorption plateau of Mg(BH 4 ) 2 -5 wt% CNTs is the highest, which ascribes that CNTs causes the reaction pathway change. Additionally, the Mg(BH 4 ) 2 -5 wt% CNTs shows the best dehydriding kinetics properties, and can desorb 6.04 wt% hydrogen within 2000 s at 300 °C. The dehydrogenation activation energy of the Mg(BH 4 ) 2 -5 wt% CNTs is decreased to 130.2 kJ/mol H 2 , which is much lower than that of pure Mg(BH 4 ) 2 .
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Haoyuan Fan,Jie Cheng,Ru Bai,Ning Li,Li Wang
Conventional self-healing anti-corrosion coatings face limitations in corrosion inhibitor release kinetics, triggering conditions, and inhibition efficiency, which compromise their protective effectiveness for magnesium alloys. In this study, we developed a novel dual-functional PEO/EP@PIN composite coating with salt-responsive self-healing properties. The coating system innovatively combines a plasma electrolytic oxidation (PEO) interlayer with an epoxy (EP) topcoat embedded with polyaniline (PANI) microcapsules containing 1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (IN) ionic liquid corrosion inhibitor. The PANI microcapsules enable rapid Na + -triggered inhibitor release in high-salinity environments, while the PEO layer ensures robust interfacial adhesion to the Mg substrate. Electrochemical tests demonstrated that the coating achieves an ultralow corrosion current density of 6.26 × 10 −11 A·cm −2 , representing a 7-order-of-magnitude reduction compared to bare Mg alloy, while maintaining a high impedance modulus of 8.97 Ω·cm 2 after 30 days of immersion in 5.0 wt% NaCl solution. Scratch-healing experiments and XPS analysis revealed that the released IN inhibitor forms Mg-N/S chemical bonds with the substrate and generates hydrolyzed Mg(OH)₂ barrier phases, effectively blocking corrosive media penetration. This work elucidates the salt-responsive and self-healing mechanisms of the coating, providing new insights for developing smart anti-corrosion coatings for magnesium alloys.
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高影响因子
LANGMUIR
·
2026
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IF 3.9
Weijun Liu,Zhaoqi Zhu,Yunxin Ai,Hanxue Sun,Jiyan Li,Rui Jiao,An Li
Developing multifunctional materials that combine low thermal conductivity with high flame retardancy is key to meeting the demands of modern energy-efficient buildings. Chitosan (CS), with its natural biogenic properties and significant inherent flame retardancy, provides a unique design basis for high-performance thermal insulation and flame-retardant materials. In this work, we use an in situ coprecipitation strategy to load ammonium polyphosphate (APP) and magnesium phosphate compounds (main phase MgNH4PO4·6H2O) onto the three-dimensional framework of CS, successfully constructing a Mg and P codoped chitosan-based composite aerogel (recorded as CS@APP@Mg–P aerogel) that synergistically enhances thermal insulation and flame retardancy. This material exhibits thermal insulation properties, with a thermal conductivity as low as 0.0251 W m–1·K–1, primarily attributed to the three-dimensional network structure and high porosity of the chitosan matrix. Its flame-retardant performance meets the UL-94 V-0 standard, with a peak heat release rate (pHRR) as low as 17.30 kW m–2, significantly outperforming similar composite materials. Additionally, the aerogel exhibits high adsorption capacity for formaldehyde (average adsorption rate >80%). The comprehensive performance mentioned above is attributed to the synergistic interaction among the CS matrix, APP flame retardant, and magnesium phosphate reinforcing phase (MgNH4PO4·6H2O). This provides a strategy for developing biobased aerogels that integrate thermal insulation, flame retardancy, and formaldehyde adsorption, offering broad application prospects in energy-efficient buildings and indoor air purification.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Yuanxiang Zhang,Maosheng Cui,Mengting Yuan,Zhen Mu,Han Wang,Xinchun Zhou,Yang Zhang,Lingxiu Chen,Xiaolan Xue
Magnesium metal batteries (MMBs) are promising candidates for sustainable energy storage, yet their development is severely hindered by the formation of passivation layers on the Mg anode. Conventional artificial interphase layers often suffer from progressive defunctionalization during prolonged cycling. Herein, we propose a chemical-dissolution-equilibrium-driven strategy that continuously supplies Bi3+ species to spontaneously construct an in situ Mg3Bi2/Bi protective layer on the Mg electrode surface. This self-sustaining interphase not only enables continuous interfacial repair but also provides abundant magnesiophilic nucleation sites, thereby facilitating highly efficient Mg plating/stripping. As a result, the Mg||Mg symmetric cell exhibits an ultralong cycling life exceeding 1500 h with an ultralow overpotential of 30 mV at 0.5 mA cm–2 and 0.25 mAh cm–2. Moreover, the preferential reduction of Bi3+ on various current collectors creates favorable nucleation sites for Mg deposition, leading to high Coulombic efficiencies in Mg||Cu, Mg||SS, and Mg||Mo asymmetric cells. Remarkably, the Mg||SS cell achieves a cycling life exceeding 1400 h with an average Coulombic efficiency of ∼99.84% and a low polarization voltage of 90 mV. This work underscores the critical role of a sustained dynamic interphase and establishes a new paradigm for designing nonaqueous, all-inorganic electrolytes for high-performance MMBs.
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Surfaces and Interfaces
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2026
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IF 6
Lingmei Yang,Wei Lv,An Wei,Baining Lin,Guoling Zhang,Bing Han
Mg-Zr composite oxides with tailored Mg-O-Zr interfacial structure weresynthesized. • Synergistic Mg-O-Zr interfacial structure integrates matched acid-basic sites • Isopropanol transfer hydrogenation achieved superior benzyl alcohol yield(89.6%). • Robust stability retained benzyl alcohol yield 82.0% after four reuse cycles. Non-noble metal composite oxide catalysts Mg x Zr 1-x O y featuring an acid–base bifunctional synergistic structure were synthesized via the co-precipitation-calcination method. Under a nitrogen atmosphere, with isopropanol serving as both the hydrogen donor and solvent, selective transfer hydrogenation of benzaldehyde to benzyl alcohol was achieved. The characterization revealed that the optimized Mg 0.7 Zr 0.3 O y catalyst possesses a highly crystalline Mg-Zr mixed-oxide structure with well-matched acidic Zr 4+ sites and surface basic sites of different strengths, including weakly basic hydroxyl species and moderate basic sites associated with interfacial oxygen species. The catalyst exhibits uniform distribution of surface sites and an appropriate pore structure, thereby providing excellent adsorption capacity and mass transfer efficiency. Under optimized conditions, the catalyst delivered nearly full benzaldehyde conversion up to 96.5% and an 89.6% yield of benzyl alcohol, together with a low apparent activation energy of 54.55 kJ·mol⁻¹. Notably, the catalyst retained a BnOH yield of 82.0% after four recycling cycles, indicating remarkable cycling stability. Compared with noble metal catalysts and monometallic oxide catalysts, the developed Mg 0.7 Zr 0.3 O y catalytic system delivers high activity, excellent selectivity, while offering the advantages of low cost and facile synthesis. This provides an efficient and stable non-noble metal catalytic solution for the selective transfer hydrogenation of benzaldehyde to benzyl alcohol and offers mechanistic insights and design principles for acid-base bifunctional composite oxides. Download: Download high-res image (232KB) Download: Download full-size image
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Qing Xu,Guojie Wu,Jiamin Deng,Xi Ke,Zhicong Shi,Liying Liu
Large K + ions act as structural pillars to enhance crystal stability. • Mg doping introduces additional vacancies to accelerate Na + diffusion. • K Mg co-doping significantly enhances rate performance and cycling stability at 4.5 V. The polyanionic compound Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) cathode material has attracted extensive attention due to its high theoretical specific capacity (128 mAh g −1 ) and energy density (500 Wh kg −1 ). The primary bottleneck for NVPF is the low intrinsic electronic conductivity, which results in poor long cycling and rate performance. A K Mg co-doped Na 2.92 K 0.08 V 1.95 Mg 0.05 (PO 4 ) 2 F 3 (NKVMPF) cathode material is designed in this work to address the above problem. K Mg co-doping improves the Na + diffusion kinetics and crystal structure stability of NVPF due to the increased lattice volume, introduced additional vacancies, and the pillar supporting role of K + with larger radius. At a potential window of 2.0 V–4.5 V, the NKVMPF delivers superior rate performance and long-term cycle ability compared to NVPF, with a specific discharge capacity of 66.9 mAh g −1 at the high current rate of 20C and a capacity retention of 81.1% after 250 cycles at 0.2C. This work provides a binary doping strategy suitable for polyanion cathode materials and offers a new perspective for the development of high-performance cathode materials for sodium-ion batteries (SIBs).
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Zhihong Wang,Tianyu Zhang,Dong Han,Wenkang Yi,Ruina Ma,An Du,Yongzhe Fan,Xue Zhao,Xiaoming Cao
Amorphous SiO 2 /MgO/MgSiO 3 coatings formed on AZ91D via MAO in TEOS electrolyte. • Due to its dense layer, this coating exhibits high corrosion resistance at 50 Hz. • Amorphous SiO 2 /MgO/MgSiO 3 coatings show optimal thermal control at 500 Hz. • Explains the growth mechanism of the coating. In this paper, AZ91D magnesium alloy is used as the substrate, and thermal control and corrosion resistant composite coatings are prepared by micro-arc oxidation technology in tetraethyl orthosilicate hydrolysis electrolyte at different pulse frequencies (50 Hz, 500 Hz, 1000 Hz, 2000 Hz). The effects of pulse frequency on the microstructure, corrosion resistance, and thermal control performance of the coatings are systematically studied. The results show that the coatings are mainly composed of SiO 2 , MgO, and MgSiO 3 . As the frequency decreases, the content of amorphous SiO 2 in the coating increases, and both the thickness and roughness increase significantly. Electrochemical tests show that the coating prepared at 50 Hz exhibits the optimal corrosion resistance, with a corrosion current density as low as 1.017 × 10⁻⁸ A/cm², and its dense inner layer resistance increases by 2.8 orders of magnitude compared with that of the coating prepared at 2000 Hz. In terms of thermal control performance, the coating at 500 Hz shows the best comprehensive thermal control performance, with an emissivity of 0.89 and an absorptivity as low as 0.30, which is attributed to the moderate thickness (about 143 μm) and roughness, the dense structure, and the intrinsically low absorptivity and high emissivity characteristics of amorphous SiO 2 . In this study, SiO 2 /MgO/MgSiO 3 composite coatings are prepared on the Mg substrate surface, which provides a new idea for the preparation of multifunctional coatings.
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Science Bulletin
·
2026
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IF 20.7
Qiaohui Chen,Xiaohong Ying,Ziyu Wu,Chenxi Miao,Wan Zeng,Yikai Cai,Yayun Nan,Qiong Huang,Kelong Ai
Intracellular metal ion homeostasis, particularly the precise regulation of mitochondrial iron and calcium, is essential for maintaining energy metabolism and cell survival. Once disrupted, iron-mediated oxidative reactions and calcium overload mutually amplify, rapidly leading to mitochondrial dysfunction and cellular injury. In acute kidney injury (AKI), this mitochondria-centered iron–calcium imbalance represents a critical pathological axis driving oxidative stress, programmed cell death, and inflammation. However, effective therapies that coordinately regulate both processes are not yet available. Herein, we developed a polyvinylpyrrolidone (PVP)-coated Mg–Fe cyanometallate framework nanozyme (MFC) to calibrate iron–calcium homeostasis in AKI. The PVP coating facilitates its interaction with the highly expressed Megalin receptor in renal proximal tubular epithelial cells, promoting receptor-dependent endocytosis and tubular-targeted delivery. Built on a Prussian blue–like coordination framework, MFC efficiently captures bioactive iron to suppress oxidative stress, while its ion-exchange process concurrently releases Mg 2+ , acting as a physiological calcium antagonist that regulates mitochondrial calcium homeostasis. By stabilizing mitochondrial structure and function, this strategy suppresses the cascade amplification of cell death and inflammatory signaling, significantly ameliorating renal injury in AKI. This study proposes a therapeutic approach for AKI by rewiring mitochondrial iron–calcium imbalance and offers a design paradigm for multifactorially coupled diseases. Download: Download high-res image (264KB) Download: Download full-size image
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LANGMUIR
·
2026
·
IF 4.4
Mengmeng Zhou,Qiuhong Guo,Chun Wang,Yue Su,Mingxue Li,Haichao Zhao
Owing to the uniqueness of their structure, remarkable specific surface area, and exceptional impermeability, two-dimensional layered nanomaterials (including graphene, hBN, MXene, LDH, and nanoclays) broadly act as reinforcing fillers to optimize the effectiveness of organic coatings in corrosion prevention. constituting the primary influence on coating performance is the state of their dispersion within the polymer matrix. Herein, a simple, exfoliation-friendly, and cost-effective method is reported for synthesizing functional LDH-Cdot nanohybrids for metal anticorrosion. A 3 nm carboxyl-rich carbon dot (Cdot) was prepared via pyrolysis and introduced into the LDH galleries, where it adsorbed onto LDH to form LDH-Cdot nanohybrids. Compared with pure LDH, LDH-Cdot exhibits a significantly improved water dispersion. By incorporation of the LDH-Cdot nanocomposite into a waterborne epoxy matrix, a corrosion-resistant coating featuring a controlled thickness of around 53 μm was successfully constructed. EIS results demonstrated that the impedance modulus at 0.01 Hz decreased in the sequence LDH-Cdot epoxy > LDH epoxy > pure epoxy. Notably, the |Z|0.01 Hz value of the LDH-Cdot epoxy coating was still retained at 4.05 × 108 Ω·cm2 following 90 days of immersion. Findings from LEIS and corrosion product analyses indicated that carbon dots anchored onto LDH are capable of coordinating with metal ions, which facilitates passivation layer formation and effectively slows corrosion kinetics.
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PubMed
高影响因子
ACS Applied Polymer Materials
·
2026
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IF 5.2
Huinan Zhang,Jiajun Cao,Kunlong Zhao,Fan Yang,Xinrui Guo,Zhuoheng Li,Shuo Yang,Tingjun Li,Qiaomei Ren,Ting Song,Tingting Wu,Xiaolei Wang,Wenxin Cao,Yu Sun
Alveolar bone defects from periodontitis are common clinical challenges in dentistry. Guided bone regeneration (GBR) proves effective, yet current membranes like Bio-Gide, suffer from inadequate mechanical strength, rapid degradation, and no antibacterial activity, limiting clinical performance. Asymmetric bilayer nanofibrous membranes with functional zoning offer a promising solution. Herein, we fabricated an asymmetric bilayer nanofibrous membrane via coaxial electrospinning, consisting of a dense PLGA-GO/PVA-MgCl2 outer layer and a highly porous PLGA-GO/PVA-MgCl2 inner layer. The dense layer prevents rapid soft-tissue cells invasion into the defect area while providing antibacterial effects. The porous layer facilitates osteoblast adhesion and proliferation. Graphene oxide (GO) and Mg2+ exert synergistic action: GO facilitates initial bacterial attachment, protein adsorption, and cell adhesion, while released Mg2+ disrupts bacterial membrane integrity and metabolic pathways. This results in durable bacterial killing and enhanced osteogenic effects compared to either component alone. The GO-enhanced membrane exhibited a Young’s modulus of 84.8 MPa and a matched degradation rate (23% over 2 months), providing mechanical support while maintaining structural integrity. This property combination addresses the fragility issue of Bio-Gide membranes. In vitro studies demonstrate that the dense layer effectively blocked soft-tissue invasion while permitting cell proliferation. The porous layer, with high porosity and sustained Mg2+ release, promoted MC3T3-E1 migration and differentiation. Furthermore, the membrane exhibited excellent antibacterial activity, cytocompatibility, and osteogenic capacity, as evidenced by significantly enhanced bone regeneration in a rat cranial defect model. These findings indicate the great potential of this multifunctional asymmetric bilayer membrane for clinical applications in alveolar bone defect repair.
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高影响因子
METALS AND MATERIALS INTERNATIONAL
·
2026
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IF 4.5
Tan QingRong,Zhu Jiyuan
The corrosion susceptibility of magnesium alloys is the most formidable challenge in large-scale applications. In this work, a highly corrosion-resistant coating was fabricated on a magnesium-alloy surface to protect the underlying substrate. Unlike conventional hydrothermal methods, this approach does not improve corrosion resistance by altering the coating’s precursor materials; instead, it focuses on investigating grain behavior at different temperatures to regulate the coating’s corrosion resistance. By extending the heating duration, the coating exhibited increased thickness, grain refinement, and a denser, more ordered arrangement, which effectively blocked corrosive ions and consequently led to a significant improvement in corrosion resistance. To verify corrosion-resistance performance, the as-prepared coatings were immersed in a saturated sodium chloride solution for 15 days; the coatings exhibited almost no corrosion, whereas the magnesium substrate had nearly completely dissolved by day 10. Additionally, when coated samples were immersed in an HCl solution at pH 2 for 15 days, only slight surface corrosion was observed on the coatings. Electrochemical tests indicated that when the heating duration was extended to 5 h, corrosion resistance reached its maximum: the coating’s impedance was six orders of magnitude higher than that of the substrate, and its corrosion current density decreased by five orders of magnitude, consistent with the immersion tests. Here, grain refinement and dense packing played critical roles by reducing porosity and crack density, thereby blocking the ingress of chloride and other corrosive ions. These results further confirm that grain refinement achieved by prolonging the heating duration provides a novel strategy for enhancing the performance of corrosion-resistant coatings. Graphical The alternative text for this image may have been generated using AI.
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