JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Tongtong Zhang,Jiaqi Li,Ruobing Bi,Jun Song,Lijun Du,Tianbao Li,Huaiping Zhang,Qingping Guo,Jujie Luo
In this work, self-supported NiTe nanosheets were prepared via one-step microwave method. XRD and XPS spectroscopy showed the successful synthesis of NiTe material in the hexagonal crystal system. SEM and EDS were used to identify the microscopic morphology and composition of NiTe on nickel foam (NF). The electrode demonstrated specific capacitance (Cs) of 808.9 F g −1 and ultra-long cycle life of 60,000 cycles. In addition, a solid-state asymmetric supercapacitor consisted of NiTe@NF electrode as cathode material and demonstrated the largest energy density and power density of 94.4 μWh cm −2 and 7801.8 μW cm −2 , respectively, and the specific capacitance remained 83.3% after 20,000 cycles. Moreover, the as-obtained NiTe@NF catalyst also displayed an excellent catalytic activity for oxygen evolution reaction (OER), which achieved an ultra-low overpotential of 199.5 mV at 10 mA cm −2 .
研究领域:
材料科学
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电化学
·
能源存储与转换
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DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2018
·
IF 4.66
Zhichao Wang,Lixue Zhang
Developing effective and low-cost oxygen evolution reaction (OER) electrocatalysts based on earth-abundant elements is vital for future clean and regenerated energy systems. In this work, one-step growth of NiTe nanosheet film on nickel foam (NiTe/NF) via a facile tellurization treatment of NF has been demonstrated. This NiTe/NF electrode exhibits remarkable OER activity with overpotential requirement as low as 262 mV to deliver an anodic current density of 10 mA cm −2 , as well as superior durability in alkaline solution. This work provides an attractive earth-abundant 3D catalyst electrode for OER in overall water splitting.
研究领域:
材料科学
·
电化学
·
能源材料
·
催化
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Hugang Zhang,Yile Wang,Xinmiao Li,Kai Deng,Hongjie Yu,You Xu,Hongjing Wang,Ziqiang Wang,Liang Wang
Electrochemical upcycling of plastic waste to high-value chemicals is an ideal approach for the valorization of waste resources. In this study, we report the electro-reforming of polyethylene terephthalate (PET) plastic hydrolysate to valuable formate and hydrogen. Pd-deposited hierarchical aligned NiTe nanoarrays on Ni foam (Pd-NiTe/NF) is developed for oxidation of PET hydrolysate at anode and hydrogen evolution at cathode, with the overpotentials of 0.019 and 1.35 V at 10 and 100 mA cm -2 , respectively. In co-electrolysis system, the Pd-NiTe/NF exhibits high Faradaic efficiencies for concurrent production of value-added formate (95.6%) and H 2 (98.6%). The high activity and stability of Pd-NiTe/NF can be ascribed to that the interfacial heterostructures by incorporating Pd atoms and the strongly interfacial electronic interactions of between Pd and NiTe can synergistically promote PET-derived ethylene glycol to formate oxidation and hydrogen evolution. This work shows promising prospect in electro-reforming PET plastic waste to valuable chemicals.
研究领域:
环境科学
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材料科学
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电化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Ting Li,Hong Chuan Fu,Xiao Hui Chen,Fei Gu,Nian Bing Li,Hong Qun Luo
The development of highly efficient oxygen evolution reaction (OER) and urea oxidation reaction (UOR) electrocatalysts with abundant resources is necessary for green hydrogen production. Ni-based compounds have received attention as the most promising earth-abundant electrocatalysts for OER and UOR, whereas some compounds in this main group, e.g., nickel selenides and tellurides, have received little attention. Herein, we demonstrate the interfacial engineered Ni 0.85 Se/NiTe array on Ni foam as a highly efficient catalyst for the OER, which exhibits an overpotential of 200 mV to obtain a current density of 10 mA cm −2 in alkaline solutions. Meanwhile, it exhibits a low potential of 1.301 V for the UOR at a current density of 100 mA cm −2 . In particular, it even has the potential to be used in methanol oxidation reaction and ethanol oxidation reaction. The vertical NiTe array not only serves as the conductive substrate for highly improving the mass loading of Ni 0.85 Se, but also triggers the strong electron interaction between two components, leading to increased adsorption sites available for the intermediates formed in the OER and UOR on the Ni 0.85 Se surface. This study provides a broad avenue to construct hierarchical nanostructures as outstanding electrocatalysts for efficient OER and UOR.
研究领域:
材料科学
·
电化学
·
能源材料
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small Methods
·
2019
·Vol. 3
·期 5
·1900113
·
IF 0
Liu Yang,Haoxiang Xu,Huibing Liu,Daojian Cheng,Dapeng Cao
Developing efficient non-precious bifunctional electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is highly critical for overall water splitting. Herein, vertically aligned CoTe and NiTe nanoarrays are synthesized in situ grown on Ni foams (marked as CoTeNR/NF and NiTeNR/NF) via a facile hydrothermal method, and further explore their catalytic activities for overall water splitting. The CoTeNR/NF catalyst exhibits not only excellent OER performance with a low overpotential of 350 mV to deliver 100 mA cm −2 , but also high HER activity only requiring 202 mV overpotential to yield 10 mA cm −2 in alkaline condition. Moreover, experimental technique and density functional theory are combined together to reveal that the real active sites of CoTeNR/NF for OER are from the in situ generated CoOOHspecies on CoTeNR/NF in the OER process, and also propose a new HER performance evaluation criteria of using H 2 O adsorption energy, H 2 O dissociation barrier, and H 2 /OH − desorption energy as an indicator. The new criteria can satisfactorily evaluate the HER performance of as-synthesized samples, while the traditional one of using H adsorption energy as an indicator fails in the HER performance evaluation of as-synthesized samples. It is expected that the new evaluation criteria can be used as a general criteria to evaluate the HER performance of other electrocatalysts.
研究领域:
材料科学
·
电化学
·
催化
·
能源材料
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产品关联
DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zahoor Ahmad,Jianjun Chen,Hafsa,Zaheer Hussain,Muhammad Arfan,Tauseef Shahid,Fakhr e Alam
Chopped carbon fiber (CC f ) reinforced SiC ceramic matrix composites (CC f /SiC CMCs) hold potential as thermal structural materials. In this work, we investigated the impacts of dual protective interphases (pyrolytic carbon/boron nitride (PyC/BN)) deposited via chemical vapor deposition (CVD), along with the incorporation SiC whiskers (SiC w ) contents (20 wt%) on the structure and properties of as-fabricated CC f /SiC CMCs by NITE route. Structural and mechanical characteristics were explicated by the relevant advanced characterization tools. The introduction of PyC/BN dual protective interphase effectively preserved its integrity at elevated temperature and improved the toughness significantly via fiber pull-out and interfacial debonding mechanisms. Furthermore, incorporating 20 wt% SiC whiskers (SiCw) as secondary reinforcement yielded a synergistic toughening effect, promoting both the crack bridging and fiber pull-out behavior. This dual toughening mechanism led to a notable enhancement in mechanical performance, revealing an optimum bending strength of ∼356 ± 9.089 MPa, and toughness of ∼5.31 ± 0.194 MPa m 1/2 . Additionally, the inclusion of SiCw contributed to the creation of spatial network structure, potentially reducing the thermal expansion. The insights from this study advance the understanding of microstructural engineering in CC f /SiC composites, enabling future low-cost design and manufacturing of high-performance composites for extreme environments.
研究领域:
材料科学
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陶瓷基复合材料
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机械工程
·
热结构材料
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微观结构工程
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 109
·期 1
·e70477
·
IF 3.8
Xu Shen,Yu Zhang,Tianyuan Jiang,Feiyan Cai,Li Tian,Jinshan Yang,Shaoming Dong
Dense nano-infiltration and transient eutectic phase (NITE)-SiC f /SiC composites are prepared through low-temperature sintering technology at 1650°C. The densification of SiC matrix, as well as effects of BN interphase thickness and fiber volume fraction on the morphology and mechanical properties of SiC f /SiC composites are investigated. AlN‒Y 2 O 3 ‒SiO 2 can fully wet SiC at 1650°C and the matrix of SiC f /SiC composites can be densified via 40 wt% sintering aids. A thick BN interphase layer can reduce stress on the fiber and the interphase in stress concentration regions, but may exacerbate stress concentration in non-concentrated regions. A moderate fiber volume fraction is necessary to balance the content and damage of reinforcement to obtain SiC f /SiC composites with high mechanical property. The optimum volume density, open porosity, and flexural strength of SiC f /SiC composites is 2.98 ± 0.05 g/cm 3 , 3.5 ± 1.7%, and 430 ± 34.2 MPa. This work can provide conduction for fabrication and optimization of low-temperature sintering NITE-SiC f /SiC composites.
研究领域:
材料科学
·
陶瓷基复合材料
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复合材料加工
·
高温材料
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 8
·e71158
·
IF 4.2
Xu Shen,Tianyuan Jiang,Feiyan Cai,Li Tian,Jinshan Yang,Shaoming Dong
A novel Pr 3 Si 2 C 2 additive was introduced to lower the sintering temperature of NITE-SiC f /SiC composites to 1550°C–1650°C. Pr 3 Si 2 C 2 effectively promoted densification, achieving 3.11 g/cm 3 density and 4.9% open porosity at 1600°C. However, the densification process causes severe thermochemical damage to the interphase layers and fibers. At 1550°C–1600°C, a kinetically-dominated “transient Pr-rich layer” is formed at the fiber/interphase boundary. This stems from a three-order-of-magnitude disparity in Pr-ion diffusion coefficients between the BN interphase and SiC fiber (At 1550°C, D BN ≈ 9.66 × 10 −13 m 2 /s vs. D SiC ≈ 8.31 × 10 −16 m 2 /s). Above 1650°C, Pr 3 Si 2 C 2 decomposition products react with the BN to form SiC, Pr 25 B 14 C 26 , and Pr 6 O 11 , shifting interfacial bonding from weak (23 MPa) to strong (154 MPa). Concomitantly, the Pr-bearing liquid phase infiltrates fibers along grain boundaries, inducing abnormal grain growth (from 8.8 to 54 nm) via Ostwald ripening. This caused monofilament tensile strength to drop from 2771.5 to 624.6 MPa and the Weibull modulus from 6.11 to 3.65. Combined interfacial degradation and fiber lead to a decline in composite performance, with the fracture mode shifting from pseudoplastic to brittle. This study elucidates the corrosion mechanisms of Pr 3 Si 2 C 2 on SiC fibers and BN interphases, providing a crucial theoretical foundation for optimizing the processing window of NITE-SiC f /SiC composites.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zefan Chai,Jun Cao,Zhigang Wang,Hongquan Wang,Chunjie Yan,Heng Deng
The discovery of the “quantum tunneling fluid effect” in organisms has led to the exploration of constructing nanochannels for ultrafast transmission of ions or molecules, which is important for biochemical sensing, energy conversion, and mass transfer. Recently, responsive nanochannel membranes have been constructed by using 2D nanosheets and applied in the field of soft actuator fabrication. However, the response speed of these nanochannel membrane actuators (NMAs) is relatively slow compared to the ultrafast transmission of molecules within nanochannels. This delay can be attributed to the rate-limiting process of surface permeation. By increasing the surface defects on NMAs, the surface permeation process can be facilitated, resulting in improved response speed. In this study, we exploit the utilization of small active Laponite building blocks with a lateral size of 50 nm to induce more surface defects on NMAs. The resulting NMAs exhibit a rapid response speed of 175°/s (204 cm −1 /s) upon the stimuli of acetone vapor. Furthermore, we employ direct laser writing (DLW) to create Origami creases on NMAs, enabling programmable transformations and expanding their potential applications in soft grippers, responsive electrical switches, and soft robotics.
研究领域:
材料科学
·
生物化学
·
软体机器人技术
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Yiping Qiu,Xingyue Wu,Denghui Tang,Junyao Li,Wenrong Cai,Laidi Xu,Yong Kong,Zheng-Zhi Yin
A Prussian blue analogue is grown in situ on nickel foam (NF) by a co-precipitation strategy, which is further converted into Ni-Co tellurides ((Ni-Co)Te)/NiTe through a hydrothermal method. The obtained (Ni-Co)Te/NiTe shows a heterogeneous and multi-dimensional structure, which displays a high areal specific capacitance of 2390.7 mF cm −2 at 1 mA cm −2 and a high capacitance retention of 80.3 % after 5000 cycles. Further, a hybrid supercapacitor (HSC) is assembled by using the (Ni-Co)Te/NiTe grown on NF (NF@(Ni-Co)Te/NiTe) as the cathode and activated carbon (AC) supported on NF (NF@AC) as the anode, respectively. The HSC exhibits a maximum energy density of 95.6 Wh kg −1 at the power density of 444.5 W kg −1 , which is higher than most of the HSCs previously reported. The synergistic effect of the heterojunction in the (Ni-Co)Te/NiTe and its multi-dimensional structure plays a crucial role in the enhanced reaction kinetics of the HSC.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhiyuan Wang,Ce Zheng,Hongru Jin,Yichun Bi,Shengkai Wang,Xiaoqiang Li
This study investigates the densification, mechanical properties, and irradiation response of NITE-SiC fabricated using two low-content quaternary sintering additive systems: AlN-Y 2 O 3 -CeO 2 -MgO (AN-SiC) and Al 2 O 3 -Y 2 O 3 -CeO 2 -MgO (AO-SiC). The incorporation of nitrogen significantly enhances densification by increasing liquid phase viscosity, thereby suppressing additive evaporation and enabling >99.5 % relative density. Multi-cation doping (Y, Ce, Mg, Al) into the Y 2 Si 2 O 7 intergranular phase reduces eutectic temperature and promotes homogeneous sintering. Under irradiation to 7–8 dpa at 550–750 °C, both systems exhibit exceptional stability, attributed to the highly ionic Y 2 Si 2 O 7 structure resisting amorphization and accommodating dopants without segregation. Damage remains dominated by intragranular defect evolution in SiC grains, while AN-SiC demonstrates reduced radiation hardening and enhanced modulus recovery, highlighting the synergistic role of nitrogen in improving sintering and radiation resistance for Gen-IV reactor applications.
研究领域:
材料科学
·
核材料
·
陶瓷工程
·
辐照效应
·
烧结技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Yang Xiang,Kun Xiong,Lijuan Sun,Jianfeng Song,Min Deng,Jia Chen,Haidong Zhang
Achieving efficiency and low-energy electrochemical hydrogen production by water splitting still faces significant challenges currently. Replacing the oxygen evolution reaction (OER) of water splitting with urea oxidation reaction (UOR) is one of the promising strategies to improve hydrogen production efficiency and reduce energy consumption. In this work, a NiSe 2 /NiTe@Ni 2.86 Te 2 heterostructure composite catalyst was successfully constructed on nickel foam via an in-situ synthesis strategy. Benefiting from the functional synergy and electronic redistribution between the NiSe 2 and NiTe components at the heterojunction interface, the NiSe 2 /NiTe@Ni 2.86 Te 2 exhibits excellent electrocatalytic performance for both the HER and UOR. When assembled into a urea electrolysis system as both cathode and anode, the NiSe 2 /NiTe@Ni 2.86 Te 2 requires only a voltage of 1.59 V to achieve a current density of 50 mA cm −2 in 1.0 M KOH with 0.3 M urea, which is significantly lower than that of overall water splitting (1.78 V). This system also demonstrates excellent stability and continuous operation in both real human urine and simulated urea environments, offering a new pathway for achieving highly energy-efficient hydrogen production while enabling the resource utilization of urea-rich wastewater.
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DOI
高影响因子
危险品化学品经营许可证（带存储）