JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Xuelian Zhang,Xin Zhang,Lingchao Zhang,Zhenguo Huang,Fang Fang,Yaxiong Yang,Mingxia Gao,Hongge Pan,Yongfeng Liu
Nanoscaled catalysts have attracted much more attention due to their more abundant active sites and better dispersion than their bulky counterparts. In this work, VH x nanoparticles smaller than 10 nm in average size are successfully synthesized by a simple solid-state ball milling coupled with THF washing process, which are proved to be highly effective in enhancing the hydrogen absorption/desorption kinetics of MgH 2 at moderate temperatures. The nano-VH x -modified MgH 2 releases hydrogen from 182 °C, which is 88 °C lower than additive-free MgH 2 . The release of hydrogen amounts to 6.3 wt% H within 10 min at 230 °C and 5.6 wt% H after 30 min at 215 °C with initial vacuum. More importantly, the dehydrogenated MgH 2 +10 wt.% nano-VH x rapidly absorbs 5.2 wt% H within 3 min at 50 °C under 50 bar H 2 . It even takes up 4.3 wt% H within 30 min at room temperature (25 °C) under 10 bar H 2 , exhibiting superior hydrogenation kinetics to most of the previous reports. Mechanistic analyzes disclose the reversible transformation between V and V-H species during the hydrogen desorption-absorption process. The homogeneously distributed V-based species is believed to act as hydrogen pump and nucleation sites for MgH 2 and Mg, respectively, thus triggering fast hydrogenation/dehydrogenation kinetics.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qin Huang,Ruijun Qian,Bingshou Gong,Habibullah,Ji Zhou,Xue Yao,Yao Wang,Yigang Yan,Yungui Chen,Chaoling Wu
Mg-Ca-hydride-based materials are ideal portable H 2 source owing to excellent hydrolysis properties. However, when exposed to air, there is an explosion risk and serious hydrolysis property degradation due to the reaction with steam in air. In this work, by adding 5 wt% expanded graphite, 8 wt% AlCl 3 and 5 wt% polyethylene glycol 1000, the H 2 yield of a 30 wt% Ca-Mg alloy hydride plate after 4 h air exposure (80 RH%, 25 °C) is increased to 2.3 times that of the original sample without any attenuation. Furthermore, when 15 wt% polyethylene glycol 1000 was added, the attenuation rate after 24 h air exposure is decreased by 43 %. The characterization results show that Ca 4 Mg 3 H 14 is more easily hydrolyzed than MgH 2 . First-principles calculations demonstrate that Ca 4 Mg 3 H 14 interacts with H 2 O molecules more strongly, owing to larger adsorption energy to H 2 O. By adding appropriate amounts of expanded graphite, AlCl 3 and polyethylene glycol 1000, combined with pressing technology, the direct contact between the material and air can be delayed. Simultaneously, the hydrolysis performance of the material itself can be improved contributed to destruction of the Mg(OH) 2 passivation layer by expanded graphite and AlCl 3 , thereby jointly enhancing the long-term storage performance. This work may advance the engineering application of Mg-Ca-based hydrolysis materials.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Pingxuan Zhong,Jie Li,Junjie Yang,Bokai Liao,Peng Zhang,Qiwei Wang,Wei Li
Aqueous Mg-air batteries (MABs) are promising for the high-energy-density storage but suffer from severe self-corrosion of the Mg anodes and the discharge suppression due to the formation of oxide products. Tailoring electrolyte additives is deemed as a critical means to address these limitations. Herein, salicylate derivatives with different functional groups (hydroxyl, thiol, sulfonic, methyl) were systematically investigated through half-cell discharge characterizations combined with density functional theory (DFT)/molecular dynamics (MD) simulations. The results show that the discharge performance of Mg-air is promoted by the addition of 0.1 M SA, 5-SSA, TA and 2,6-DHB, but significantly reduced impeded by 3-MSA. Both experimental and DFT/MD results indicate that the presence of hydroxyl/thiol/sulfonic groups within SA molecule provides additional sites for its complexation with Mg ions suppressing the precipitation of hydroxides on the Mg anode surface, whereas the methyl group helps the adsorption of 3-MSA on the corroding Mg surface. This work suggests that the category and position of the functional group play critical roles in determining the effect of the electrolyte additive for Mg-air battery.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Jing Xu,Zhengnan Wei,Shaokang Zhang,Xuanxuan Wang,Yihan Wang,Mengyuan He,Kejing Huang
Transition metal dichalcogenides (TMDs) have emerged as a promising material in the energy field due to their unique structural arrangement. In this work, ordered flower-like WSe 2 nanosheet was synthesized through simple one-step hydrothermal method , and its cathode application for rechargeable Mg-ion batteries was assessed. The WSe 2 cathode exhibits a high reversible capacity above 265 mAh g −1 at 50 mA g −1 , excellent cycling life of 90% initial capacitance that can be ceaselessly harvested for 100 cycles at 50 mA g −1 , and superior rate capability of 70% initial capacitance maintained even at the current density of 500 mA g −1 . This work paves the way for the application of WSe 2 cathode in Mg-ion and other rechargeable batteries.
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DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2021
·
IF 6.064
Manyi Huang,Guangming Lu,Jibin Pu,Yujie Qiang
Layered double hydroxides (LDHs) have been widely used as “smart” containers in the field of metal corrosion protection, and have broad industrial prospects. It is environmentally friendly and feasible to use aliphatic carboxylates and corresponding acids as substitutes for harmful corrosion inhibitors. However, previous studies rarely involved comparing the anti-corrosion mechanisms of different aliphatic acids modified on the LDH surface, and the durability of the prepared coatings also needs to be improved. In this work, MgAl-LDH laminates were grown in situ on AZ31 substrates by a hydrothermal method, and then modified by sodium laurate (SL) and sodium dodecylbenzene sulfonate (SDBS). Due to the physical barrier effect of the LDH layers, the spatial repulsion effect of the air film and the ion exchange reactions in the interlayer galleries, the functional coatings prepared exhibit smart and superior anti-corrosion performance on the magnesium substrates in 3.5 wt.% NaCl solution. Compared with LDH-SDBS-8 coating, the obtained superhydrophobic LDH-SL-8 coating shows more excellent long-term corrosion protection owing to the stronger intercalation capacity.
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高影响因子
Materials
·
2023
·Vol. 16
·期 18
·6248
·
IF 3.4
Yan Zhou,Dongsheng Wang,Youwen Yang
Biodegradable magnesium (Mg) and its alloys show tremendous potential as orthopedic materials. Nevertheless, the fast degradation and insufficient osteogenic properties hinder their applications. In this study, mesoporous bioglass (MBG) with an ordered branch-like structure was synthesized via a modified sol–gel method and showed a high specific surface area of 656.45 m2/g. A Mg-based composite was prepared by introducing the MBG into a Mg matrix via powder metallurgy. Degradation tests showed that the introduction of MBG increased the adsorption sites for Ca and P ions, thus promoting the formation of a Ca-P protective layer on the Mg matrix. The Ca-P protective layer became thick and dense with an increase in the immersion time, improving the protection ability of the Mg matrix, as proven by electrochemical impedance spectroscopy measurements. Meanwhile, the Mg-based composite also exhibited excellent biocompatibility and osteogenic properties. This study demonstrated the advantages of MBG in the preparation of Mg-based bone implants and validated the feasibility of improving Mg matrix corrosion resistance and enhancing osteogenesis by introducing MBG.Keywords:biodegradable magnesium alloy;corrosion resistance;in situ deposition;Mg-based composite;mesoporous bioglass;osteogenesis
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PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2019
·
IF 5.714
Zhao Yang,Xu Zhang,Siji Pu,Renxiang Ni,Ying Lin,Yong Liu
A novel heterogeneous Fenton-like system (Mg/Fe-O 2 ) which could directly convert oxygen (O 2 ) to hydrogen peroxide/hydroxyl radicals (H 2 O 2 / • OH) was developed and used to degrade 4-chlorophenol. The Mg/Fe bimetallic particles were prepared by chemical displacement process and characterized by XRD, SEM and TEM. The in situ continuous production of H 2 O 2 / • OH and the effect of the mole ratio of Mg to Fe in the Mg/Fe bimetallic particles and the operating parameters on the degradation 4-chlorophenol in Mg/Fe-O 2 system were investigated in detail. It was found that the Mg/Fe bimetallic particles with the mole ratio of Mg to Fe of 32:1 had the best performance for the 4-chlorophenol degradation and the maximum cumulative concentration of H 2 O 2 , the degradation efficiency of 4-chlorophenol and the removal efficiency of TOC in Mg/Fe-O 2 system were 34.5 mg/L, 100% and 91.8%, respectively, at pH 3, O 2 flow rate 400 mL/min, dosage of Mg/Fe bimetallic particles 2 g/L, 4-chlorophenol initial concentration 50 mg/L and reaction time 60 min. It was revealed by radical scavenging experiments that • OH, particularly the surface-bound • OH, were the predominant reactive oxygen species in Mg/Fe-O 2 system for the degradation of 4-chlorophenol. The main intermediates of 4-chlorophenol degradation were detected by high-resolution liquid chromatography equipped with time-of-flight mass spectrometry (HRLC–ToF-MS) and ion chromatography (IC). Based the results of control experiments and the electrochemical tests, the possible pathway and mechanism of 4-chlorophenol degradation in Mg/Fe-O 2 system were tentatively proposed.
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DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Yang Yang,Yifan Zhai,Huaicheng Xiang,Jie Li,Ying Tang,Liang Fang
Herein two cubic garnet ceramics Ca 3 TiBGe 3 O 12 (B = Mg, Zn) were prepared with optimal sintering temperatures of 1300 ℃ and 1200 ℃, respectively. Both ceramics exhibited promising microwave dielectric properties as well as rather low coefficient of thermal expansion ( α L ) of ε r = 11.95, Q×f = 83,000 GHz, τ f = −34.1 ppm/℃ and α L = 3.9 ppm/℃ for Ca 3 TiMgGe 3 O 12 , and ε r = 11.80, Q×f = 79,000 GHz, τ f = −42.9 ppm/℃ and α L = 4.0 ppm/℃ for Ca 3 TiZnGe 3 O 12 . Bond valence calculation reveals that Ca 2+ at the A-site is slightly compressed, Ge 4+ at C-site is rattling, and compressed Mg 2+ /Zn 2+ coexists with rattling Ti 4+ in the B-site. The large positive deviations (17.22% for Ca 3 TiMgGe 3 O 12 and 10.90% for Ca 3 TiZnGe 3 O 12 ) between the porosity corrected ε r (Corr) (12.32 and 12.41) and calculated ε r (C-M) (10.51 and 11.19) by the C-M equation were observed, which might be attributed to the combination of rattling effects in B-site and C-site. The relatively stronger rattling effect in Ca 3 TiMgGe 3 O 12 leads to a higher ε r and a τ f closer to zero than those of Ca 3 TiZnGe 3 O 12 . Besides, the Q×f values of Ca 3 TiBGe 3 O 12 (B = Mg, Zn) ceramics are mainly affected by relative density, packing fraction, and Raman mode (A 1 g ).
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高影响因子
Advanced Energy and Sustainability Research
·
2025
·
IF 5.7
Arup Chakraborty,Haoxiang Wang,Kaijie Yan,Zinuo Xu,Zejing Lin,Chengliang Wang,Liumin Suo,Minglei Mao,Dan T. Major
Rechargeable magnesium batteries (RMBs) are a promising alternative to lithium-ion batteries because of the high capacity and crustal abundance of magnesium. However, RMBs are primarily plagued by low-energy-density of traditional cathode materials, which utilize transition-metal cationic redox chemistry. Herein, a new family of layered Ti 1- x Fe x S 2 (0 < x < 1) materials is proposed to assess anionic redox and boost the energy density of RMBs. The structural stability and redox activity are systematically investigated using first-principles calculations and operando experimental techniques. It is found that layered Mg n Ti 1- x Fe x S 2 materials are stable below x = 0.5, forming the solid-solution sulfides. The Mg n Ti 0.75 Fe 0.25 S 2 sample is experimentally shown to offer a high operating voltage of 1.8 V, a competitive energy density of 103 mAh g −1 , and better cycling stability compared to prototype TiS 2 material. Both cations (Ti and Fe) and anion (S) are revealed to take part in the redox reaction. The new family of layered Ti 1- x Fe x S 2 cathodes with joint cationic and anionic redox chemistry proposed in this work are promising high-energy cathode candidates for RMBs.
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产品关联
DOI
高影响因子
IONICS
·
2020
·Vol. 27
·期 1
·351-360
·
IF 2.394
Wang Jia,Rui Jiayi,Yin Jingzhou,Zhou Guolang,Zhu Lili,Wang Hao,Zhao Pusu,Zhang Lili
Two-dimensional Mg-substituted cobalt hydroxides (Co x Mg y (OH) z ) with different crystal phases were synthesized via a facile reaction of magnesium (Mg) powder and cobalt aqueous solution. The phases of Co x Mg y (OH) z (amorphous phase and β phase) were controlled by adjusting the cobalt salt precursors. The obtained hybrid amorphous Co x Mg y (OH) z (a-Co x Mg y (OH) z ) showed excellent specific capacitance (662.2 F g −1 , 1 A g −1 ) than β phase Co x Mg y (OH) z (β-Co x Mg y (OH) z ) and pure Co(OH) 2 (p-Co(OH) 2 ). Additionally, the hybrid supercapacitor assembled with a-Co x Mg y (OH) z and the activated carbon showed high specific capacitance (77.8 F g −1 , 1 A g −1 ) and ultrahigh cycling stability with 99.7% retention of the first capacitance at 10 A g −1 after 5000 cycles.
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高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Shiyu Cao,Xiquan Qi,Xiangyu Zhao
Rechargeable magnesium batteries (RMBs) emerge as a promising alternative to postlithium battery systems due to their intrinsic advantages of magnesium metal anodes. However, the lack of a stable solid electrolyte interphase (SEI) on magnesium severely limits their interfacial reversibility and cycling life. Herein, we propose a simple solution-based surface engineering strategy to construct a robust artificial SEI layer on Mg metal through displacement reactions between Mg and InI3. The resulting In/MgI2@Mg electrode features a homogeneous and compact interphase composed of electrochemically favorable In, MgI2, and InMg alloy. This artificial SEI significantly enhances Mg2+ stripping/plating reversibility, lowers interfacial resistance, and suppresses passivation. The modified Mg anode exhibits a cycling lifespan of 725 h with a low overpotential of ∼80 mV, excellent rate performance, and a reduced activation energy of 17.92 kJ mol–1. When paired with a Mo6S8 cathode, the In/MgI2@Mg-based RMB delivers a high reversible capacity of 74.4 mAh g–1 (higher than 54.7 mAh g–1 of the bare Mg-based RMB), a reduced voltage hysteresis of 0.2 V, and superior Coulombic efficiency over extended cycling. This work highlights the effectiveness of iodide-mediated interfacial chemistry for stabilizing Mg metal anodes.
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高影响因子
Applied Materials Today
·
2020
·
IF 8.352
Zhen Wang,Shuanghu Wang,Kun Liu,Dongmei Fu,Yicheng Ye,Junbin Gao,Lu Liu,Daniela A. Wilson,Yingfeng Tu,Fei Peng
Here we present an anti-CD3 loaded PLGA/ALG/CHI Mg micromotor systems, with degradable constituents and Mg-water reaction propulsion, thus ensuring a superior biocompatibility. Porous hydrogel formed by ALG/CHI offers high capacity of antigen loading, along with biocompatibility. By efficient loading of anti-human CD3 as an antigen and activating the calcium ion channel of Jurkat T cell, vital for immunotherapy, the motor system extends the application scope of micro/nanomotor systems from cargo (drug) delivery to interaction with the biointerface and immune activity modulation.
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高影响因子
危险品化学品经营许可证（带存储）