INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Weiye Shi,Zhongbao Wang,Yi Sun,Shiwei Lin,Xueyu Du,Chunqing Huo,Xihong Lu,Yan Zhang
Cobalt phosphide for hydrogen evolution reaction (HER) is significantly hindered by the strong binding of hydrogen intermediates on the CoP surface, which does not facilely allow the desorption of H 2 . Here, we introduce a novel strategy to improve the hydrogen evolution catalysis of CoP by modulating the Co–P bond length. This is achieved by incorporating nitrogen into CoP, leveraging the higher electronegativity of nitrogen compared to cobalt and phosphorus. N-doping reduces the electron density around Co atoms, prompting electron redistribution and altering the electronic structure at the Co surface. Consequently, N atoms draw closer to neighboring Co atoms, thereby modifying the Co–P bond lengths. The N-modulated dandelion-like CoP/TiC–C core/branch array exhibits outstanding electrochemical characteristics, achieving an overpotential of only 77 mV at a current density of −10 mA cm −2 in a 1 M KOH solution and maintaining −100 mA cm −2 for over 100 h, demonstrating exceptional durability. X-ray photoelectron spectroscopy, extended X-ray absorption fine structure spectroscopy, and density functional theory studies confirm that the effective manipulation of the Co–P bond length and electronic structure of Co by N doping. This study advances the development of cost-effective transition metal phosphides (TMPs) and provides valuable insights for improving electrocatalytic materials, holding promise for sustainable energy technologies.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2025
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IF 2
Jiao Hua,Wang Qingxiang,Wang Jia,Zhao Kang,Qinggong Jia
ZrC and TiC are high-temperature materials that can be used in astronautic and aeronautic industries. Titanium (Ti) and zirconium (Zr) belong to adjacent elements of the same IVB family; their similar chemical properties can form a relatively stable crystal structure. Zr x Ti 1-x C composite ceramics doped with Ti were prepared by precursor pyrolysis method. The precursor of aqueous solution systems is more environmentally friendly than in organic systems. The results show that preparing high-purity Zr x Ti 1-x C composite ceramics can be obtained at the Zr: C and Ti: C molar ratio more than 1: 4. The mole number of C is at least four times than the metal ions Zr 4+ or Ti 4+ . The maximum phase transformation temperature is 502.3 °C in Zr 0.25 Ti 0.75 C, which is significantly higher than the initial oxidation temperature 460 °C of ZrC. The result indicates that the Zr x Ti 1-x C composite ceramics reinforced by Ti have better oxidation resistance than pure ZrC ceramics. The crystal structure and bonding properties, electronic characteristics, phonon dispersion spectrum and dynamic stability, mechanical property, and thermodynamic properties of Zr x Ti 1-x C are calculated using first principles showing that Zr 0.25 Ti 0.75 C is the best material.
研究领域:
材料科学
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无机非金属材料
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计算材料学
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高温结构材料
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陶瓷材料
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产品关联
DOI
高影响因子
Brain and Behavior
·
2026
·Vol. 16
·期 8
·e71687
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IF 2.8
Hu Jue,Ma Jingying,Chen Yaqin,Pan Yulu,Chen Yanhong,Xu Jiaye,Chen Danfei,Chen Jian,Xuan Xiao‐bo
Using an integrated strategy of network pharmacology and transcriptomics, this study elucidates the therapeutic mechanism of XuanShi Choudong Recipe (CDR) against tic disorder (TD). CDR dose‐dependently alleviates apomorphine‐induced tic‐like stereotypy and hyperlocomotion in rats, restores striatal neurotransmitter homeostasis, and attenuates oxidative stress injury and neuronal apoptosis. Mechanistically, the neuroprotective effect of CDR is closely associated with activation of the PI3K/AKT/Bcl‐2 signaling pathway, providing preliminary experimental evidence for its clinical application in TD.
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DOI
PubMed
高影响因子
European Physical Journal Plus
·
2026
·Vol. 141
·期 9
·1057
·
IF 2.9
Yan Xiang,Fan Hui,Li YuHang
To further enhance the mechanical properties of metal surfaces, Ni–Co–TiC nanocomposite coatings were successfully fabricated on 304 stainless steel substrates utilizing a custom-built jet electrodeposition system. This study systematically investigated the effects of cathodic current density and TiC particle concentration in the electrolyte on the growth kinetics, microstructural morphology, phase composition, crystallite size, microhardness, and tribological properties of the composite coatings. The results indicate that as current density and TiC particle concentration increase, the mass deposition rate, compactness, and mechanical properties of the coatings initially improve before subsequently declining. Under the optimal processing parameters (a current density of 70 A/dm 2 and a TiC particle concentration of 10 g/L), the high-velocity impingement of the jet flow and the electric field force achieved an optimal synergy. This effectively suppressed nanoparticle agglomeration and facilitated the uniform dispersion of TiC within the Ni–Co matrix. X-ray diffraction analysis verifies that the Ni–Co matrix retains a face-centered cubic solid solution structure, and the average crystallite size is refined to 15.2 nm under the optimized condition. Driven by the combined mechanisms of grain refinement and Orowan dispersion strengthening, the optimized coating reaches a peak microhardness of 654.24 HV and reduces the average friction coefficient to 0.265, achieving a favorable balance between mechanical strength and tribological performance. This study elucidates the regulatory mechanisms of jet electrodeposition parameters on the microstructural and macroscopic properties of composite coatings, providing a crucial theoretical basis for the engineering fabrication of high-performance, wear-resistant composite coatings.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Tianzhan Shen,Cuiyan Li,Haibo Ouyang,Jintao Wang,Leer Bao,Sirui Wu,Yanlei Li,Xinge Niu,Li Wang,Qianqian Chen
To enhance the ablation resistance of C/C-HfC-ZrC-SiC composites at temperatures above 2100 °C, a TiC coating was deposited on the surface of the composites by the molten salt method to achieve pore sealing. The influence of this coating on the ablation behavior of the composites was systematically investigated. When exposed to an oxygen-acetylene flame of 2.4 MW/m 2 for 60 s, the mass ablation rate and linear ablation rate of the TiC-coated composite were only 1.12 mg/s and 0.51 μm/s, respectively. Compared with the uncoated samples (1.64 mg/s and 1.05 μm/s), they were reduced by 32% and 51%, respectively. The excellent ablation resistance can be attributed to the preferential oxidation of the TiC coating to form a continuous liquid TiO 2 layer. This liquid layer significantly reduces the surface heat load through evaporation and heat absorption, lowering the surface ablation temperature by approximately 70 °C. Additionally, the liquid TiO 2 penetrates into the interior of the oxide scale through capillary action and reacts with HfO 2 and ZrO 2 in the matrix, promoting in-situ sintering and forming a dense (HfZrTi)O 2 composite oxide scale with a thickness of approximately 100 μm. The synergistic effect of physical sealing and chemical reaction between the coating and the substrate helps to form a robust self-healing oxide scale, providing effective protection under extreme thermal conditions.
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产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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2017
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IF 3.094
Xinjiang Zhang,Feng Song,Zhiping Wei,Wenchao Yang,Zhongkui Dai
In-situ TiC/Ti titanium matrix composites were successfully fabricated through a novel approach, utilizing the reaction of graphene and Ti mixture powders in spark plasma sintering . Microstructure, hardness and compressive properties of such composites were investigated. The layered graphene nanosheets as the carbon source were dispersed in the powders, and subsequently formed uniform TiC particles in Ti matrix during the rapid sintering. The resulting TiC particles exhibited the micro- and nano-sized equiaxial structures. Such composites possessed the significantly enhanced hardness and room-temperature compressive strength comparing with the as-cast and as-sintered pure Ti. The ultimate and yield compressive strengths of as-prepared 7.0 vol% TiC incorporated composite respectively reached up to 2.64 GPa and 1.93 GPa, beyond some advanced Ti materials reported to date. In-situ micro- and nano-sized TiC particles were believed to be beneficial to harden and strengthen Ti matrix. The relevant strengthening mechanisms of such composites were discussed.
研究领域:
材料科学
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金属基复合材料
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粉末冶金
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力学性能
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显微结构表征
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DOI
高影响因子
Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·177
·
IF 36.3
Yang Tianyue,Shen Yan,Zhao Yangzhong,Zhao Zhongqian,Zhou Xue,Chen Qianji,Wang Xujing,Gou Yanzi
TiC-SiC fibrous membrane exhibits exceptional high–temperature resistance (2000 °C) and long–term thermal stability (1800 °C for 5 h) in an inert atmosphere.
TiC-SiC fibrous membrane demonstrates stable resistivity up to 900 °C and shows sensing stability under butane flame (~1300 °C).
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Cuiyan Li,Jiaqi Liu,Haibo Ouyang,Lei Wang,Li Wang,Mengyao He,Tianzhan Shen,Leer Bao,Yanlei Li,Sirui Wu,Qianqian Chen,Qiaoqiao Wang
Lightweight TiC/ZrC ceramic foams were successfully fabricated using a self-foaming method to address thermal-electromagnetic coupling in extremely high-temperature environments. These ceramic foams feature an interconnected pore structure, achieving a porosity of 75.2% and a density of 0.41 g/cm3. The foam demonstrates low thermal conductivity of 0.21 W·m–1·K–1, promising broadband electromagnetic wave absorption with a minimum reflection loss (RLmin) of −33.9 dB and an effective absorption bandwidth (EAB) of 3.7 GHz. Additionally, it exhibits high load-bearing strength of 26 MPa. The exceptional multifunctionality of these ceramic foams is primarily due to their interconnected pore structure and the solid solution strengthening of TiC in ZrC ceramics. Notably, the ceramic foam also shows remarkable high-temperature resilience. After undergoing five thermal cycles at 1600 °C, the material maintains its structural integrity and performance stability, with electromagnetic absorption characteristics dropped to RLmin of −28.7 dB, along with a mechanical strength of 9 MPa.
研究领域:
材料科学
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陶瓷与复合材料
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电磁干扰屏蔽
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热工工程
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高温材料
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产品关联
DOI
PubMed
高影响因子
Journal of Macromolecular Science Part B-Physics
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2024
·
IF 1.2
Wei Zhang,Guoqin Jiang,Yang Liu,Zongyi Deng,Zhixiong Huang,Xueyuan Yang
Carbon fiber/phenolic resin composites (CF/Ph) are often used on the surface of hypersonic vehicles as thermal protection materials. In this paper, the composite materials were prepared by a compression molding process with carbon fiber and boron phenolic resin modified by TiC and B4C. The high-temperature flexural strength and anti-ablation behavior of the composites (TB) were studied. The results showed that the residual weight yield at 1500 °C of TB-10 (B4C content of 10 phr) increased by 39.22% compared to that with no B4C (TB-0). The flexural strength of TB-10 was increased by 19.51% and 19.69% at 1400 °C and 1600 °C, respectively, with respect to TB-0 at the same temperatures. The linear ablation rate and mass ablation rate of TB-10 were reduced by 24.32% and 5.58%, respectively, compared with TB-0. By exploring the anti-ablative mechanisms, it was revealed that PyC, liquid B2O3 and TiO2, all of which were formed at high temperatures, tended to fill the inner cracks of the composite and, therefore, prevent the oxide to further diffuse in. Along with the outer ceramic layer, the three components above play a synergistic effect to improve the ablative property.
研究领域:
材料科学
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航空工程
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复合材料
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高温技术
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2018
·
IF 6.434
Zimo Lou,Yizhou Li,Jiasheng Zhou,Kunlun Yang,Yuanli Liu,Shams Ali Baig,Xinhua Xu
Titanium carbide (TiC) with excellent electrical conductivity, chemical and thermal stabilities has been recognized as one of the most promising electrocatalysts. A novel cathode, titanium carbide doped palladium/nickel foam (TiC-Pd/Ni foam), was synthesized via electroless deposition to improve the performance of Pd/Ni foam in electrocatlytic hydrodechlorination (ECH). TiC can be co-precipitated onto the surface of cathode during galvanic replacement reaction between Pd(II) solution and Ni foam. Both constant potential and constant current tests proved that TiC-Pd/Ni foam cathode performed remarkably higher activity for 2,4-dichlorobenzoic acid (2,4-DCBA) than Pd/Ni foam cathode, owing to the excellent conductivity of TiC and enhanced water dissociation over TiC-Pd/Ni foam cathode. Under the optimized reaction conditions of –0.85 V ( vs Ag/AgCl), electrolyte of 10 mM and initial pH of 4, 99.8% of aqueous 2,4-DCBA (0.2 mM) was removed within 90 min. The removal process of the aqueous 2,4-DCBA obeyed first-order decay kinetic model. Over 86.3% of 2,4-DCBA can still be removed by TiC-Pd/Ni foam cathode in the fifth consecutive run within 120 min, which was much higher than that of Pd/Ni foam cathode (37.5%). Consequently, TiC-Pd/Ni foam cathode was a promising design for enhanced ECH activity and reduced operation cost.
研究领域:
环境科学
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材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Xianwei Geng,Ruowei Yi,Xiangfei Lin,Chenguang Liu,Yi Sun,Yingchao Zhao,Yinqing Li,Ivona Mitrovic,Rui Liu,Li Yang,Cezhou Zhao
Lithium-sulfur (Li–S) batteries have attracted more and more attention in recent years, as their theoretical capacity is several times larger than conventional lithium-ion batteries and they have a high energy density in secondary battery systems. In our work, a titanium carbide - titanium dioxide/single-walled carbon nanotube/sulfur (TiC–TiO 2 /SWCNT/S) cathode with high conductivity and effective polysulfides adsorption is prepared by a facile method for fabricating Li–S batteries. The batteries with this composite cathode show a good performance at 0.1 C due to relatively high utilization of sulfur, reaching 1338.6 mAh·g −1 specific capacity at first cycle and retaining 802.5 mAh·g −1 after 100 cycles. Meanwhile, it presents an excellent rate performance with 711.2 mAh·g −1 at 4 C, and recovers to 1006.9 mAh·g −1 when the current returns to 0.1 C. Also a slow capacity decay (0.045% decay rate per cycle) is observed at 1 C. These results suggest that a small amount of SWCNT can increase the conductivity of the whole composite to a great extent, and the strong adsorption ability of TiO 2 increases the cycle life. This work offers an efficient and low-cost strategy to obtain high performance batteries with great potential for commercial applications.
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
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zhiyuan Ma,Huichao Cheng,Jinglian Fan,Zhenwei Wang,Zhanggen Liu
In this study, to improve the fracture toughness of Si 3 N 4 ceramics and overcome the reduction in the hardness caused by toughening, the Si 3 N 4 -based composite ceramics were prepared by spark plasma sintering . Fixed amounts of Y 2 O 3 (7 wt%) and TiC (8 wt%) together with Mo adjusted in the range of 0-8 wt% were incorporated into the Si 3 N 4 matrix. Besides, Si 3 N 4 composites were also prepared as control groups by excluding TiC and Mo. The results reveal that the addition of TiC improves the hardness of the Si 3 N 4 composites by inhibiting the transformation from α-Si 3 N 4 to β-Si 3 N 4 and grain refinement. Meanwhile, the high hardness of the composites is maintained even after toughening with Mo. The addition of Mo promotes the nucleation and phase transformation of α-Si 3 N 4 by promoting the transfer of the Si and N atoms. At the same time, molybdenum silicide is formed in-situ, improving fracture toughness through various toughening mechanisms. The Si 3 N 4 composites with 8 wt% TiC and 8 wt% Mo sintered at 1700 °C exhibit the optimal properties, with Vickers hardness and fracture toughness determined to be 18.25 GPa and 10.2 MPa•m 1/2 , respectively.
研究领域:
材料科学
·
机械工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）