JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Xie Tao,Jian Yuxuan,Wang Chuang,Pan Qingrui,Yang Lingzhuo,Long Jinxiang,Yang Fenglin,Wu Xianwen,Wu Xianming
LiMn x Fe 1 − x PO 4 (LMFP) is a promising cathode candidate due to its high working voltage, cost-effective advantages, and environmentally friendly characteristics. However, LMFP is constrained by issues such as low intrinsic electronic and ionic conductivity, as well as Jahn–Teller lattice distortion induced by Mn 3+ , which limit its practical performance. To synergistically optimize its electrochemical behavior, LiMn 0.6 − x − y Fe 0.4 Mg x Zn y PO 4 (x = 0, y = 0; x = 0.005, y = 0.005; x = 0.01, y = 0; x = 0, y = 0.01) composite materials were designed and synthesized via a solvothermal method in this study. A comparative investigation of these samples was conducted to systematically elucidate the mechanisms underlying individual Mg and Zn doping and their synergistic co-doping. The experimental results indicate that the synergistic strategy of Mg and Zn dual-doping combined with carbon coating helps stabilize the olivine structure of LMFP, improves the reaction kinetics, and lowers the Li + diffusion energy barrier. The optimized LMFP/C-MgZn1 exhibits enhanced electrochemical performance, retaining 92.42% of its capacity after 600 cycles at 1.0 C and delivering a discharge specific capacity of 109.8 mAh g −1 at 10.0 C. Furthermore, Density Functional Theory (DFT) calculations indicate that the co-doping strategy improves the reaction kinetics by reducing both the material’s band gap and the Li + diffusion energy barrier. Graphical abstract Mg Zn co doping stabilizes LMFP/C, reduces the Li diffusion barrier and band gap,and enables fast kinetics with durable cycling. The alternative text for this image may have been generated using AI.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Xin Li,Wenpo Li,Rong Wang,Chunliu Xu,Lei Guo,Jawza A. Almutairi,Hanan Alghibiwi,Bochuan Tan
[N₁₈₈₈][NTf₂] serves as a bifunctional electrolyte additive for Mg–air batteries. • [N₁₈₈₈][NTf₂] forms a hydrophobic, MgF₂-containing interfacial layer on Mg. • DFT and MD simulations reveal preferential and stable adsorption on Mg(0001). • The protective effect is concentration-dependent, with an optimum at 1 mM. • The cell delivers 1853.3 Wh·kg⁻¹ and a discharge duration of 123.3 h. Mg-air batteries are limited by severe self-corrosion of the magnesium anode and accumulation of discharge products, leading to reduced anode utilization and discharge voltage. This study introduces the ionic liquid [N₁₈₈₈][NTf₂] as a bifunctional electrolyte additive to regulate the magnesium/electrolyte interface. The long alkyl chain of [N₁₈₈₈]⁺ forms a hydrophobic barrier, restricting water access to the magnesium surface and inhibiting magnesium self-corrosion; [NTf₂]⁻ coordinates with Mg²⁺, slowing the accumulation of discharge products. This complementary cation-anion regulation achieves a balance between inhibiting corrosion and maintaining effective dissolution of the magnesium anode. The full cell achieved a discharge voltage of 1.45 V and a specific energy of 1853.3 Wh·kg⁻¹ at 5 mA·cm⁻²; at 10 mA·cm⁻², the discharge time reached 123.3 h, approximately seven times that of the blank electrolyte. This work provides an ion-specific interface regulation strategy for improving magnesium anode utilization and the discharge performance of MABs. Download: Download high-res image (331KB) Download: Download full-size image
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TRANSACTIONS OF TIANJIN UNIVERSITY
·
2026
·
IF 7.8
Gong Mengcong,Wang Qingfa,Liu Linlin,Zhang Xiangwen
ZSM-48 zeolite, which features one-dimensional ten-membered-ring straight channels, is an ideal support for hydroisomerization catalysts to improve fuel low-temperature fluidity. To improve the poor low-temperature fluidity of Fischer–Tropsch synthesis products, this study employed Mg modification on Pt/ZSM-48 catalysts to optimize their hydroisomerization performance. A series of Mg-Pt/ZSM-48 catalysts with varying Mg loadings was prepared via incipient wetness impregnation. The effects of Mg modification on the pore structure, acidity, and metal–acid balance of the Pt/ZSM-48 catalyst system were systematically investigated. Catalytic performance was evaluated using n-hexadecane as a model compound. The Mg species selectively modified the micropore channels, decreasing the specific surface area and micropore volume. Moreover, Mg 2+ selectively neutralized Brønsted acid sites, reducing the concentration of medium-strong acid sites and Brønsted acidity while introducing Lewis acid sites, thereby lowering the Brønsted/Lewis acid ratio. Appropriate Mg modification optimized the metal–acid balance, making acid-catalyzed skeletal isomerization the rate-determining step. Although the Mg-modified catalysts exhibited moderately reduced catalytic activity, their isomer selectivity and yield were significantly enhanced. The 0.5 Mg-Pt/Z48 catalyst achieved an isomer yield of 81.81% at 91.18% conversion, representing a 9% improvement over the unmodified catalyst. The micropore confinement effect weakened the interaction between alkane molecules and micropore channels, promoting the key–lock catalytic mechanism. This increased the formation of mono-branched isomers close to the center of the main carbon chain, significantly improving the low-temperature fluidity of the fuel. This study provides a simple and efficient strategy for designing high-performance hydroisomerization catalysts for long-chain n-alkanes. Graphical
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JOURNAL OF ELECTROCERAMICS
·
2026
·
IF 2.6
Zhou Wenjie,Zhang Yun,Yin Zezhen,Yang Jing,Ding Shihua
LiAl 1 − x Mg x O 2− x /2 ( x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) ceramic were prepared by conventional solid-phase reaction method. After X-ray diffraction analysis, a single-phase solid solution was formed in this system throughout the doping range. Through the oxygen vacancies formation by the replacement of Al 3+ with Mg 2+ , the relative density was increased from 94.33% to 96.1%. The dielectric constant ( ε r ) showed a trend of first enhancing and then decreasing with doping concentration. Their relationship mainly depended on the synergistic effect of relative density and dielectric polarizability. The improvement in the quality factor ( Q×f ) from 15,647 GHz to 34,507 GHz was attributed to the increased doping ratio and the strengthened covalent bonds. The change in the temperature coefficient of resonance frequency ( τ f ) was explained from the perspective of oxygen bonding valence. Excellent microwave properties were ε r = 6.59, Q×f = 34,507 GHz, and τ f = -115.8 ppm/°C for LiAl 0.97 Mg 0.03 O 1.985 ceramic at 1325 °C for 5 h.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Hang Che,Yuhao Wu,Xinhua Wang,Haizhen Liu,Mi Yan
The Mg(NH 2 ) 2 -2LiH system is considered as one of the most potential hydrogen storage materials due to its high hydrogen storage capacity (5.6 wt%) and excellent reversible hydrogen adsorption and desorption performance. However, its poor kinetic characteristics of hydrogen absorption and desorption limit its practical application. In this work, Li 3 VO 4 @LiVO 2 was synthesized by a hydrothermal method , and was then introduced into Mg(NH 2 ) 2 -2LiH system to enhance the hydrogen absorption and desorption kinetic characteristics. The results show that the hydrogen storage properties were greatly improved with addition of 10 wt% Li 3 VO 4 @LiVO 2 addition. As for the hydrogen absorption and desorption kinetics, the average hydrogen absorption rate of 10 wt% Li 3 VO 4 @LiVO 2 modified Li-Mg-N-H sample within 20 min at 200 ℃ increased by 95.2% compared with that of the pristine Li-Mg-N-H sample, and the average hydrogen desorption rate of 10 wt% Li 3 VO 4 @LiVO 2 modified sample within 30 min at 180 ℃ increased by 42% compared with that of the pristine sample. The E a of hydrogen desorption decreased from 117.86 kJ/mol to 99.43 kJ/mol, which also indicates that Li 3 VO 4 @LiVO 2 catalyst effectively improved the kinetic performance of hydrogen desorption and desorption of Li-Mg-N-H. Moreover, the hydrogen desorption capacity and hydrogen absorption capacity of 10 wt% Li 3 VO 4 @LiVO 2 modified Li-Mg-N-H increased by 18.4% and 13.8% compared with that of the pristine sample. The catalytic mechanism of Li 3 VO 4 @LiVO 2 was discussed based on XRD , XPS and FTIR analysis results.
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Nature Communications
·
2026
·
IF 15.7
Sun Tianpeng,Tang Zhengjie,Liu Jiang,Sun Xuan,Luo Qun,Zhang Yu,Li Qian,Lu Yangfan
The high ductility of Mg has posed major challenges for nanofabrication utilizing mechanical ball-milling. While the addition of organic solvents is effective, it has been unclear how they improve the ball-milling effect by modifying the material’s surface properties. Herein, we report that the solvent-mediated partial ionicity plays an important role in enhancing the nanosizing effect of Mg 87.5 Ni 5.5 Y 7 alloy. This approach enables the Mg 87.5 Ni 5.5 Y 7 particles to be 88 times smaller than those of the solvent-free procedure. The Mg 87.5 Ni 5.5 Y 7 nanoparticles underwent complete dehydrogenation in 3 min at 300 °C and in 17 min at 240 °C, which can be stably cycled at least for 500 times. Solvent (THF) adsorption on Mg induces Mg δ + ‒Mg δ− dipole structure. This increases the surface hardness of Mg-based alloy and maximizes the ball milling-driven structural deformation, thereby facilitating ion migration. Mg‒Mg bond breaking is caused by the resulting Coulombic repulsion between Mg atoms. These findings provide an affordable approach for nanoparticle fabrication of highly ductile materials.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Bangpeng Yang,Liuyan Xia,Rong Li,Guangsheng Huang,Shuangshuang Tan,Zhongting Wang,Baihua Qu,Jingfeng Wang,Fusheng Pan
Rechargeable magnesium batteries (RMBs) have attracted tremendous attention in energy storage applications in term of high abundance, high specific capacity and remarkable safety of metallic magnesium (Mg) anode. However, a serious passivation of Mg anode in the conventional electrolytes leads to extremely poor plating/stripping performance, further hindering its applications. Herein, we propose a convenient method to construct an artificial interphase layer on Mg anode by substitution and alloying reactions between SbCl 3 and Mg. This Sb-based artificial interphase layer containing mainly MgCl 2 and Mg 3 Sb 2 endows the significantly improved interfacial kinetics and electrochemical performance of Mg anode. The overpotential of Mg plating/stripping in conventional Mg(TFSI) 2 /DME electrolytes is vastly reduced from over 2 V to 0.25–0.3 V. Combining experiments and calculations, we demonstrate that under the uniform distribution of MgCl 2 and Mg 3 Sb 2 , an electric field with a favorable potential gradient is formed on the anode surface, which enables swift Mg 2+ migration. Meanwhile, this layer can inhibit the decomposition of electrolytes to protect anode. This work provides an in-depth exploration of the artificial solid-electrolyte interface (SEI) construction, and a more achievable and safe path to realize the application of metallic Mg anode in RMBs.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Xingxing Zhang,Xiangdong Gao,Yubing Dong,Yongqing Wu,Deng Duan,Xiang Zhao,Xiaomin Li
SiO 2 is the hotspot radiative cooling material due to its selective radiation or the Mie resonance effect generated by micro/nanospheres of a specific size. Herein, we demonstrate the modulation of the infrared emissivity of the intrinsic SiO 2 at the atmospheric window by doping Mg 2+ in nanoporous SiO 2 nanoparticles via a modified stöber method. The effects of the Mg-doping on the crystallinity, morphology, infrared emissivity of the nanoparticles and the radiative cooling properties of the corresponding coatings are investigated. Results show that the Mg-doping at a level of 0.226–2.26 % can induce cristobalite nanocrystals after sintering at 1000 ℃, transform the morphology from spheres to irregular nanoporous particles, and improve the infrared emissivity up to 0.96. XPS proves the formation of Mg-O bonds and the change of the binding energy of Si 2p and O 1s, supporting the successful doping of Mg 2+ in the lattice of SiO 2 . All-inorganic Mg-doped SiO 2 coatings on FTO substrates are prepared via tape casting , which exhibit rough and porous microstructure and high solar reflectivity up to ∼86 %, with the thickness of ∼90 µm. The Mg-doping improves the radiative cooling capacity of the coatings obviously, and the best temperature reduction of 17.8 ℃ compared with the empty space is achieved, 3–5 ℃ lower than the pure SiO 2 coating and 4.5 ℃ lower than the commercial SiO 2 coating. Our work offers an effective way to modulate the infrared emission of emitter, enriching the technical measures to improve the overall performance of the sub-ambient radiative cooling devices.
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CERAMICS INTERNATIONAL
·
2022
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IF 5.532
Zuizhi Lu,Hua Fan,Yingjun Ou,Mianhong Chen,Ye Yang,Linawa Shen,Liya Zhou,Xiaotong He,Jiansheng Zhao,Peican Chen
Recently, near-infrared (NIR) light-emitting diodes (LED) have attracted much research attention globally. To advance this technology, NIR phosphors with high efficiency, thermal stability, and broad bands are required. In this work, we modified ZnGa 2 O4:Cr 3+ phosphor with Mg 2+ ions. Results show that this method improves the luminescence intensity of ZnGa 2 O4:Cr 3+ phosphor, and the emission wavelength of the sample can be changed by doping different Mg 2+ concentrations. This method also improved the thermal stability of the samples. The quantum yield of Mg-modified ZnGa 2 O 4 :Cr 3+ phosphors reached 87.12%, and the white LED fabricated with Zn 0.4 Mg 0.6 Ga 2 O 4 :0.01Cr 3+ phosphor and commercial Y 3 Al 5 O 12 :Ce 3+ phosphor demonstrated good performance. The NIR-LED fabricated with Zn 0.4 Mg 0.6 Ga 2 O 4 :0.01Cr 3+ phosphor achieved a photoelectric conversion efficiency of 7.17%. The lines on the surface of an orange taken by a NIR camera reveal that phosphor can be used in night vision lighting. Meanwhile, the distribution of blood vessels in the human palm highlights the promising biological applications of the Zn 0.4 Mg 0.6 Ga 2 O 4 :0.01Cr 3+ phosphor.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 26
·20981-20991
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IF 2.779
Yan Gui-wei,Liu Qing-qing,Fang Bi-jun,Chen Zhi-hui
Mg doped (Ba 0.98 Li 0.02 )TiO 3 energy storage ceramics with antiferroelectric-like double hysteresis loops were prepared using solid-state reaction method. XRD patterns indicated that tetragonal phase structure of the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic was destroyed and the orthorhombic phase structure appeared with Mg doping. The ratio of orthorhombic/tetragonal phase increased with Mg content increasing, and the value of polarization was in direct proportion to the ratio of orthorhombic/tetragonal phase. The breakdown strength of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics was improved from 60.97 kV/cm at x = 0 to 103.66 kV/cm at x = 0.04. The optimum energy storage properties of (Ba 0.98 Li 0.02 )(Mg x Ti 1− x )O 3 ceramics were obtained with energy storage density of 0.76 J/cm 3 at 102.5 kV/cm when x = 0.04, which is nearly 2.3 times larger than the pure (Ba 0.98 Li 0.02 )TiO 3 ceramic, and the energy storage efficiency was improved from 64 to 87%.
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JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Xiongjian Chen,Yanchao Jin,Zijing Zhou,Peiwen Huang,Xiao Chen,Rui Ding,Riyao Chen
Aquaculture wastewater contained large amounts of pathogenic microorganisms , nitrogen (N) and phosphorus (P). In this study, the nutrient recoveries and wastewater disinfection were simultaneously achieved using Mg–coconut shell carbon (Mg–CSC). The composites were prepared by a ball milling method. The hydrogen peroxide (H 2 O 2 ) was in-situ generated by the dissolved oxygen reduction driven by Mg corrosion on the CSC surface, which inactivated the microorganisms . Besides that, Mg corrosion provided sufficient Mg ions and appropriate pH conditions for struvite formation. The results show that 5.4-log E.coli removal was achieved under different conditions. Improving the Mg/CSC ratio and composite dosage could shorten the time required for disinfection. In addition to H 2 O 2 , singlet oxygen played a critical role. Reactive oxygen species destroyed the cellular structure and killed the bacteria. The recoveries of NH 4 + - N and P under certain conditions were about 60% and 91%, respectively. An increased composite dosage could improve the recovery ratio of P. Excessive dosages were not beneficial for removing NH 4 + - N . The characterization result revealed that struvite crystals were the main precipitates on the CSC surface. The Mg–CSC composites also revealed satisfied nutrient recovery and disinfection performances in the real aquaculture wastewater treatment process .
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yujie Lv,Yifan Jing,Bao Zhang,Yingxue Li,Guanglin Xia,Xuebin Yu,Pengru Huang,Haixiang Huang,Bogu Liu,Jianguang Yuan,Ying Wu
Although Mg(BH 4 ) 2 has been widely studied in the hydrogen storage field for its high hydrogen density, its terrible dehydriding kinetics and cycling features remain impediments to practical applications. Herein, introducing different MXenes (Ti 3 C 2 , Ti 2 C, Nb 2 C) with novel two-dimensional structures as catalysts into Mg(BH 4 ) 2 has been demonstrated to be an efficient approach to boosting the hydrogen storage properties. 30 wt% MXenes in Mg(BH 4 ) 2 causes a considerable reduction in its hydrogen release temperature, remarkable increases in its dehydrogenation rate and capacity, and an enhancement to its reversibility. The Mg(BH 4 ) 2 -30Ti 2 C as the most excellent composite starts to liberate hydrogen from 132 °C, 143 °C lower than that of Mg(BH 4 ) 2 . Furthermore, at 260 °C, the Mg(BH 4 ) 2 -30Ti 2 C composite desorbs 10.2 wt% H 2 , which is much higher than that of Mg(BH 4 ) 2 (1.5 wt%). Theoretical calculations elucidate the weakening of B-H bonds caused by the electron transfer at the Mg(BH 4 ) 2 /MXenes interfaces, and the dehybridization effect between the B and H orbits. X-ray photoelectron spectroscopy (XPS) analyses prove the in-situ formation of multiphase interfaces resulting from the interaction of Mg(BH 4 ) 2 and MXenes during milling and dehydrogenation processes, which could increase electron conduction and facilitate hydrogen diffusion. These factors contribute to the outstanding dehydrogenation properties of Mg(BH 4 ) 2 .
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