ACS Applied Materials & Interfaces
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2024
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IF 8.3
Cheng Chen,Jiali Guo,Chunlei Wu,Xianjian Duan,Lingzhi Zhang
Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) is considered the most prominent cathode material to establish a practical high energy density of lithium-ion batteries (LIBs) for future electric vehicles. The energy density of LIBs is greatly determined by the capacity of electrode materials and the operating voltage of the cells. To further improve the cycle lifespan of NCM811 batteries to meet the requirement of driving range for the electric vehicle market, it is vital to design a novel electrolyte additive that can enhance the stability of the cathode/electrolyte interface at a wide range of voltage. Herein, a novel borate functionalized disiloxane compound, 1,1,1,3,3-pentamethyl-3-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)propyl) disiloxane (PMBPDS), is synthesized as cathode electrolyte interphase (CEI) film-forming additive to improve the cycling performance of NCM811 batteries. Systematic studies reveal that PMBPDS can construct a stable CEI film on the NCM811 surface and efficiently scavenge hydrofluoric acid (HF). The PMBPDS-derived CEI prevents the dissolution of transmission metals in the NCM811 cathode and enhances the capacity retention of NCM811/graphite cells from 68.3 to 70.6% after 200 cycles at 1 C in the voltage window of 3–4.5 V. This work provides more understanding on designing the molecular structure of additive compounds for improving the electrochemical performance of LIBs.
研究领域:
材料科学
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电化学
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能源存储
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高影响因子
Animation-An Interdisciplinary Journal
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2020
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IF 0
Hyunseok Lee
As one of the masterpieces of early South Korean animation, the film Robot Taekwon V has instilled hopes and dreams in a younger generation of Koreans since the late 1970s when it was released, while critics have cited Robot Taekwon V as being influenced by American pop culture, particularly the Disney animation style, and have accused it of plagiarizing the designs of the popular Japanese animation Mazinger Z. In the 1970s, the Korean government actively promoted economic development for the ‘modernization of the country’ under the military regime’s inculcation of anti-communism. Robot Taekwon V was produced with the intent of being an anti-communist tool and, further, it sought the nationalism of postwar South Korea and promoted the country’s confidence in the future that eventually resulted in rapid economic development. This socio-political context is portrayed both in the form of a ‘gigantic robot’ and in the use of non-Korean appearances for Korean characters. Considering these aspects, the author examines how Robot Taekwon V navigates the intricacies of the postwar ideological framework, manages foreign cultural influences and suggests transnationalism through its character design and narrative.
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APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Youcai Ding,Yuqi Peng,Wenyong Chen,Yunjuan Niu,Shougang Wu,Xianxi Zhang,Linhua Hu
Rechargeable aqueous zinc-ion battery is a promising energy storage device because of its low cost and high safety. However, they are still in their infancy due to the limited choice of cathodes with high capacity and satisfactory cycling performance. In this work, porous V 2 O 5 materials were obtained by pyrolysis of vanadium-MOF and adopted as intercalation cathode for aqueous zinc-ion batteries . V 2 O 5 purchased commercially as a control, the effects of specific surface area, pore size distribution and mixed valence of electrodes on the performance of batteries were studied. The novel cathode delivers high capacities of 300 mA h g − 1 compared to 60 mAh g − 1 for C-V 2 O 5 at current density of 100 mA g − 1 . The energy density of this Zn ion battery is about 230 Wh kg − 1 , which is much higher than commercial lead acid batteries . The capacity of P-V 2 O 5 electrode retains 120 mA h g − 1 even at 2000 mA g − 1 , which is much higher than that of C-V 2 O 5 . Moreover, the structure of V 2 O 5 nanoplates and their composites with carbon materials can improve the cyclic stability.
研究领域:
材料科学
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电化学
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Huajing Wang,Li Zeng,Xiao Wu,Baisheng Sa,Hanxin Chen,Rui Xiong,Dawen Zeng
The long-term stability of the metal-organic frameworks (MOFs) gas sensors is of great value in advancing their practical applications under complex environmental conditions (high humidity, high temperature, etc.). However, long-term stable and accurate gas detection by MOF sensors in an energy-efficient state remains a formidable challenge. In this work, the vanadium-based MOF MIL-47(V) is reported as a novel and efficient NO 2 sensing material, which exhibits intense response and trace detection with outstanding stability at room temperature (RT, 25 °C). The high specific surface area and abundant hollow channels of MIL-47(V) provide numerous active sites for the adsorption of NO 2 molecules. The high chemical stability and hydrophobicity enable the MIL-47(V) sensor to maintain long-term stability in the face of environmental disturbances. Furthermore, theoretical calculations validate the high reactivity of the V atoms and the hollow channels in MIL-47(V). The V sites demonstrate a strong adsorption energy of −0.87 eV to NO 2 , which enhances the interaction between the MIL-47(V) and NO 2 . The MIL-47(V) sensor shows outstanding NO 2 sensing properties at RT, with high sensitivity (response ≈ 2.89–10 ppm NO 2 ), trace detection limit (15 ppb), excellent long-term stability (response ≈ 2.11–3 ppm NO 2 , eight weeks) and good humidity resistance (response ≈ 1.21–1.14 to 0 %-80 % relative humidity, 100 ppb NO 2 ), which makes it remarkably attractive for ultrasensitive, accurate and reliable NO 2 detection at RT.
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JOURNAL OF ORGANOMETALLIC CHEMISTRY
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2019
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IF 2.066
Yi Zhou,Rui Zhang,He Ren,Xuelian He,Bao Liu,Ning Zhao,Boping Liu
A series of novel V/Ti bimetallic polyethylene catalysts were developed successfully through the introduction of vanadium species into the (SiO 2 /MgR 2 /MgCl 2 )·TiCl x Ziegler-Natta Catalyst. The organometallic heterogeneous catalysts combined advantages of reducibility of magnesium alkyl on the activation of secondary metal active sites (vanadium active sites), which successfully enhanced average molecular weight in homopolymer products and produced dominantly bimodal molecular weight distribution in copolymer products. Catalyst preparation conditions including calcination temperature and magnesium dosage were investigated to explicit the effect on the relative performance of different metal active centers. Moreover, the factors including hydrogen and ethylene/1-hexene copolymerization were systematically studied. The bimetallic catalysts exhibit 63.9% enhancement on activity, 37.3% better hydrogen response than the original (SiO 2 /MgR 2 /MgCl 2 )·TiCl x organic magnesium Ziegler-Natta catalyst. Moreover, a simplified schematic model was proposed to elaborate on the reason why the bimetallic catalysts showed much higher activity than the original one, and each active species performance well. Vanadium active sites react quickly in the initial reaction time on the external surface of the support, which helps titanium active sites crack the catalyst particles together in the fragmentation and activation stage; then the released internal surface active sites, which were accessible to the monomer in the slurry phase, speed up the polymerization reaction during the latter reaction process.
研究领域:
材料科学
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化学工程
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PHYTOMEDICINE
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2021
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IF 5.34
Yisa Liu,Juan Wang,Xiao Guan,Dan Yu,Mengjie Huangfu,Tong Dou,Luwei Zhou,Lin Wang,Guoxiang Liu,Xiaojuan Li,Zhaokun Zhai,Mengjie Han,Haiping Liu,Xu Chen
Background Mogroside V, the main ingredient of Siraitia grosvenorii , has been proved to have therapeutic effects on pulmonary diseases . The specific mechanism still remains to be clarified, which hinders the potence of its medicinal value. Purpose Serum and lung metabolomics based on LC-MS analysis were applied to explore the mechanism of mogroside V against lung inflammation. Method In this study, balb/c mice were divided into control, model, mogeoside V and SH groups. We evaluated the protective effects of mogroside V on lung inflammation in asthmatic mice. Suhuang Zhike Jiaonang was used as positive drug . Metabolic profiles of serum and lung samples of mice in control, model and mogroside V groups were analyzed by LC-MS. Results Administration of mogroside V effectively relieved the expression of biochemical cytokines and lung inflammatory infiltration of asthmatic mice caused by ovalbumin (OVA). And visceral index of mice treated with mogroside V was close to control group. These results indicated that mogroside V ameliorated OVA-induced lung inflammation. LC-MS based metabolomics analysis demonstrated 6 main pathways in asthmatic mice including Vitamin B6 metabolism, Taurine and hypotaurine metabolism, Ascorbate and aldarate metabolism, Histidine metabolism, Pentose and glucuronate interconversions, Citrate cycle (TCA cycle) were regulated after using mogroside V. Conclusion The study firstly elucidates the metabolic pathways regulated by mogroside V on lung inflammation through metabolomics, providing a theoretical basis for more sufficient utilization and compatibility of mogroside V.
研究领域:
药理学
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免疫学
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代谢组学
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呼吸医学
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高影响因子
Small Methods
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2025
·Vol. 9
·期 12
·e01743
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IF 9.1
Yi Xie,Hao Zhang,Xinran Li,Jian Luo,Xiong Qian,Yong Zheng,Chuanlin Hu,Ivan P. Parkin,Lee Li,Zhi Chen,Xiujian Zhao
The development of robust transparent superamphiphobic (SAP) and superhydrophobic (SH) coatings remains challenging due to the inherent trade-offs between surface micro-nano architecture, optical clarity, liquid repellency, and mechanical resistance. Herein, a balancing strategy that combines femtosecond laser-etched V-groove microstructures on glass with functionalized SiO 2 nanoparticles is presented. This approach results in transparent and mechanically robust coatings with water and oil contact angles of 173.6° and 170.4°, respectively, while the average spectral transmittance, ranging from 380 to 1100 nm can be enhanced from 80.4% in the uncoated laser-etched glass to 82.1% in the SAP-coated etched glass. The etched V-groove architecture serves as a structural confinement framework, enhancing nanoparticle adhesion and providing mechanical robustness, thereby maintaining stable SH performance even after 50 abrasion cycles. As a sharp comparison, the SAP-coated non-etched sample loses its liquid repellency after 2 friction cycles. Furthermore, the SAP-coated sample demonstrates excellent chemical and environmental stability, retaining superwetting properties under acidic, neutral, salt environments, and prolonged UV illumination. The proposed method not only addresses the challenge of balancing optical transparency with superwetting performance and mechanical robustness but also offers a practical route for fabricating multifunctional coatings with self-cleaning and anti-icing, suitable for applications in architectural glazing and photovoltaics.
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Molecular Catalysis
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2024
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IF 3.9
Xiaoyu Yan,Xiaoqing Xu,Yuhan Sun,Xiuyi Li,Jiale Xu,Renjie Ji,Rui Huang,Chunyi Li
Compared with propane dehydrogenation (PDH) technology, oxidative dehydrogenation (ODH) of propane is an effective way to break through the thermodynamic constraints, which has changed the endothermic reaction into exothermic. Meanwhile, coking in PDH was significantly reduced by the presence of an oxidant in ODH of propane. Therefore, ODH of propane has attracted wide interest and has been studied in recent years. However, the contradiction between the conversion of propane and the selectivity of propene was the intrinsic problem of ODH of propane that required further study. In this work, a novel aluminum/potassium-doped mixed metal oxide catalyst Mo 1 V 0.5 Al 0.02 K 0.03 O x was synthesized using a simple co-impregnation method, whose selectivity for propene (83.2 %) and conversion of propane (12.7 %) at 300 °C were the best among all other alkali metal/alkaline-earth metal-doped catalysts. The further discussion illustrated that doping potassium and alumina could synergistically adjust the density of acid sites on the catalyst, establishing an equilibrium between high propane conversion and the ideal propene selectivity. After modification, the density of Brønsted acid decreased, leading to an enhancement in the selectivity of propene. Simultaneously, the addition of steam in the feed gas promotes propene to oxygenates and improves the conversion of propane under the condition of constant contact time.
研究领域:
化学工程
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催化材料科学
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JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Yan Lu,Weilin Weng,Yuanhang Lu,Xinxin Pang,Naixuan Hu,Banghua Peng
Hydrogen is increasingly recognized as a critical energy source for the future. Transition metal nitrides hydrogen catalysts have found to narrow the d-band contraction effectively and alter the filling state of the metal, thereby modulating the metal-hydrogen bonding energy and enhancing both electrical conductivity and catalytic activity. In this study, V-doped cobalt nitrides (V–Co 2 N/CoN) with two distinct crystalline structures were successfully synthesized through the nitriding of V-doped cobalt bicarbonate (V–CoCH) as a precursor. The morphology and structure of the resulting materials were carefully optimized by adjusting the V doping amount and nitriding temperature. For hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), the final product V–Co 2 N/CoN-1-400 only needs 47 mV and 230 mV overpotential to reach 10 mA cm −2 , and works at 1.69 V to drive the overall water splitting for 10 mA cm −2 , showing good stability performance without fluctuation for about 10 h. This work implies that V-doped cobalt nitrides can lead to enhanced water splitting catalytic activity. Our findings may illustrate the significance of V doping for improving electrocatalytic performance, and demonstrate the potential of CoV bimetallic nitrides as effective electrocatalysts , offering valuable insights for the further development of non-precious metal nitride-based catalysts.
研究领域:
材料科学
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电化学
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yuqin Zheng,Haoyuan Zheng,Jiangping Tu,Xin Zhang,Lingchao Zhang,Changdong Gu
Magnesium hydride (MgH 2 ) for hydrogen storage suffers from high thermodynamic stability and slow kinetics. Vacancy engineering has emerged as an effective strategy to improve its performance. Herein, vanadium-deficient VSe 2 nanoflowers assembled from nanosheets were fabricated via Nb doping, which introduced cation vacancies acting as efficient catalysts for MgH 2 . MgH 2 +10 wt% Nb-doped VSe 2 exhibits greatly enhanced kinetics compared with pure MgH 2 and undoped VSe 2 -added MgH 2 . At 275 °C, it releases ∼6.11 wt% H 2 within 300 s and retains 5.66 wt% after 60 cycles. The improved performance stems from three synergistic effects: electron-rich interfaces boosting H 2 dissociation, multivalent V 4+ /Nb 5+ accelerating electron transfer, and active phases (V, MgSe) providing more active sites and diffusion pathways. This study offers a valuable defect-engineering route for high-performance hydrogen storage catalysts.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2026
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IF 3.1
Zhao Xiaole,Zhang Guanglei,Guo Yitong,Di Yibo,Wang Libo,Chang Yukai,Zhou Aiguo
This study develops high-performance zinc-ion battery cathodes through dual engineering of vanadium-alloyed MXene and its heterointerface with sodium vanadate (NaV 3 O 8 ·1.5H 2 O, NVO). By selectively etching (Ti 1-x V x ) 3 AlC 2 MAX precursors (NaF/HCl, 60℃, 48 h), we synthesized (Ti 1-x V x ) 3 C 2 MXene solid solutions where V-substitution optimizes electron conductivity. When composited with NVO, the 20 wt% (Ti 0.7 V 0.3 ) 3 C 2 /NVO cathode delivers remarkable specific capacities of 221.6 mA h g −1 at 10 A g −1 – surpassing pure NVO by 4.0-fold and Ti 3 C 2 /NVO by 2.5-fold – and maintains 195 mA h g −1 after 5,000 cycles (1.7 times of pure NVO and 4.1 times Ti 3 C 2 /NVO), outperforming state-of-the-art vanadate cathodes. Mechanistic analysis reveals that while NVO enables reversible Zn 2+ redox reaction, the V-alloyed MXene simultaneously constructs a 3D conductive network suppressing electrode degradation and creates low-energy Zn 2+ migration channels at interfaces via lattice distortion. Collectively, this interface engineering strategy unlocks ultra-stable zinc storage at practically high rates (10 A g −1 ), providing a pathway for next-generation zinc storage cathode.
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RSC Advances
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2025
·Vol. 15
·期 41
·34768-34780
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IF 4.6
Qiwen Zhang,Yong Fan,Yimin Zhang,Peng Liu,Hong Liu,Zihanyu Zhang,Xiuqiong Fu
Molten salt electrolysis is a promising method for producing metallic vanadium, overcoming the limitations of conventional processes, such as high purity requirements for raw materials and high impurity content. This study introduces an innovative approach utilizing soluble vanadium–aluminum alloy anodes in KCl–LiCl molten salt, where vanadium is dissolved as V2+ and V3+. Optimal conditions were identified as 0.3 A cm−2 current density, 500 °C temperature, and 6 h duration. High purity metallic vanadium was prepared under these conditions, and the electrolysis efficiency reached 89.53%. Electrochemical analysis revealed three reduction processes: Al(III) → Al, V(III) → V(II) and V(II) → V. In molten salts, vanadium ions existed in coordination forms as VCl2, VCl3, VCl42−, and VCl63−, while aluminum ions were present as AlCl4−. The process was confirmed as diffusion-controlled, with calculated V(III) diffusion coefficients. Nucleation mechanism analysis demonstrated dual vanadium deposition pathways: instantaneous and progressive nucleation. Fluoride ions were found to enhance reaction kinetics through chloride substitution in aluminum complexes, increasing free chloride availability for vanadium coordination and improving ion mobility. The developed method offers significant advantages in energy efficiency and product quality compared to traditional metallurgical approaches, providing insights for optimization of molten salt electrolysis systems in refractory metal production.
研究领域:
冶金工程
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电化学
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材料科学
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无机化学
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能源材料
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高影响因子
危险品化学品经营许可证（带存储）