JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Mingru Su,Jinlin Li,Kuidong He,Kai Fu,Penghu Nui,Yichang Chen,Yu Zhou,Aichun Dou,Xiaochuan Hou,Yunjian Liu
Antimony anode has attracted much attention owing to its low lithium-embedded platform and high specific capacity. However, the dramatic volume expansion during the insertion and detachment of Li + seriously affects its application in lithium-ion batteries. In this work, NiSb alloy embedded in nitrogen-doped carbon (NiSb/C) derived from a Ni-based framework was synthesized by a simple hydrothermal reaction followed by annealing treatment. NiSb alloy nanoparticles could alleviate significant volume expansion during lithium/delithiation owing to the good buffering action of Ni. Nitrogen-doped carbon provides abundant active sites for Li + and serves as a conductive network to accelerate electron transport. Moreover, the uniformly dispersed NiSb alloy particles and the nitrogen-doped carbon can effectively cooperate to retain the structural completeness of antimony , which promotes the cycling stability and high-rate performance of the NiSb/C anode. At a high density of 2 A g −1 , the prepared NiSb/C anode exhibits a reversible specific capacity of 426 mAh g −1 after 450 cycles. It can also exhibit a superior rate capability of 387 mAh g −1 at 5.0 A g −1 , which can provide a possibility for designing new anode materials for rechargeable batteries.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Mei Wan,Congling Shi,Xiaodong Qian,Yueping Qin,Jingyun Jing,Honglei Che,Fei Ren,Jian Li,Bin Yu
In this study, three-dimensional flower-like Ni-MOFs were fabricated and successfully functionalized on multi-terminal lamellar MXene (Ti 3 C 2 T x ) by solvothermal method, and their flame retardant application in thermoplastic polyurethanes (TPU) was investigated. As expected, the addition of Ni-MOF@Ti 3 C 2 T x can improve the flame retardancy and smoke suppression properties of TPU. The heat release rate, the smoke release rate, total smoke production, CO and CO 2 release of the composite with only 1 wt% MOF@Ti 3 C 2 T x were significantly reduced by 15%, 44%, 26%, 18%, and 8%, respectively. Furthermore, the carbon residues of TPU/Ni-MOF@Ti 3 C 2 T x composites were about 2–5 times that of pure TPU, indicating that the Ni-MOF@Ti 3 C 2 T x can inhibit the thermal degradation of TPU. The mechanism illustrated that the excellent fire safety properties of TPU/Ni-MOF@Ti 3 C 2 T x composites are due to the physical barrier, catalytical carbonization, and gas-phase flame retardant of Ni-MOF@Ti 3 C 2 T x . In this work, the dispersity, thermal stability, and flame retardancy of MXene were improved due to the modification of MXene with Ni-MOF by chemical bonding and physical adsorption, which can broaden the range of applications of MOFs .
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高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Congwen Duan,Yating Tian,Xinya Wang,Mengmeng Wu,Dong Fu,Yuling Zhang,Wei Lv,Zhaohua Su,Zhiyong Xue,Ying Wu
MgH 2 is one of the most potential hydrogen storage material with a high gravimetric hydrogen storage capacity. however, its applications have been plagued by its high operating temperature and the relatively poor kinetics for releasing and absorbing hydrogen. In the present study, nanoconfinement or catalytic doping were introduced to improve de/rehydrogenation kinetic properties of MgH 2 . The MgH 2 @Ni-CNTs was fabricated by holding the MgH 2 particles on the surface of the CNT-Ni. MgH 2 supported by carbon nanotubes loaded with Ni nanoparticles (MgH 2 @Ni-CNTs) shows a superior H 2 de/ab-sorption kinetics than that of MgH 2 . This nano-composite releases H 2 at 250 °C with the dehydrogenation capacity of 7.29 wt% within 60 min. The dehydrogenation E a of MgH 2 in MgH 2 @Ni-CNTs is reduced to 74.8 kJ/mol by the confining and catalytic impact of Ni-CNTs. It also has a significant improvement on rehydriding kinetics, with a 7.20 wt% H 2 absorption in 30 min even at a temperature as low as 200 °C. Moreover, the MgH 2 @Ni-CNTs also shows good cycling stability without distinct capacity decay after cycling ten times. Studies show that during dehydrogenation and hydrogenation processes , the CNTs-Ni act as confining framework and catalyst, can accelerate diffusion of hydrogen and prevent the Mg/MgH 2 agglomeration. The application of this novel MgH 2 @Ni-CNTs extends the horizon of transition metallic catalyst and nanoconfinement, and offers a novel way to enhance the hydrogen storage property of the nanoconfined MgH 2 .
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高影响因子
CERAMICS INTERNATIONAL
·
2018
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IF 3.057
Guangyuan Yang,Xu Wang,Zhixiong Huang
To improve the oxidation resistance ability of carbon fiber (CF) in the high temperature environment, the composite electroplating method had been used to fabricate SiC-ZrO-MoSi 2 /Ni coating at the surface of CF. Both nanoparticles and Ni-matrix were plated onto CF successfully while the mechanical property of coated CF was only slightly weakened. The oxidation resistance performance of CF and the CF reinforced phenolic resin composites had been improved obviously. The microstructure of coatings was investigated by scanning electron microscope and X-ray diffraction analysis. Thermal gravimetric analysis was applied to test the anti-oxidation ability of coated CF. The mechanism of oxidation process had been discussed. It can be concluded that composite plating is an effective way to make composite coatings which can enhance the anti-oxidation ability of CF.
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高影响因子
CORROSION
·
2023
·Vol. 80
·期 2
·187-196
·
IF 1.6
Li Bowen,Pan Fengze,Pan Chengyu,Lv Tianyi,Wang Xiaotian,Ju Xiang,Gong Kaifei,Zou Wenkai,Zheng Chuanbo
The Ag-Ni-Co alloy coating is prepared in the low eutectic solvent system by pulsed power supply technology. Infrared spectroscopy and cyclic voltammetry are used to confirm that the addition of metal salts does not change the low eutectic solvent system. When the current density is 1 A/dm 2 and the plating time is 40 min, the plating grain is mainly spherical; the coating is uniform and dense. After testing, the surface-specific resistance of the plating is only 1.295 mΩ·cm 2 , the microhardness reaches 214.8 HV, and the wear rate reaches 3.1. The corrosion resistance of the plating and the substrate is analyzed by a combination of macroscopic electrochemistry and microarea electrochemistry, and the results show that the corrosion potential of the plating reaches −0.141 V, and the corrosion current density reaches 1.299 × 10 −7 A/cm 2 . The corrosion resistance of the plating is much greater than that of the substrate.
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高影响因子
Journal of Central South University
·
2022
·Vol. 29
·期 5
·1423-1436
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IF 2.392
Liu Jun-ru,Li Zhi-bo,Chen Ben,Chou Kuo-chih,Zhang Guo-hua
In order to improve the low ductility of the Mo-Ni alloy, Fe is added and the effects of Ni/Fe mass ratio on the densification behavior, microstructure evolution and mechanical properties of alloy were investigated. The experimental results show that when iron is added to 95Mo-5Ni alloy, the formation of brittle intermetallic phase δ -MoNi at the grain boundary is avoided. Meanwhile, the grain growth of Mo is also effectively inhibited in the sintering process. However, the addition of iron reduces the degree of densification of alloy since the activation effect of Ni is superior to that of Fe. From the experimental results, it could be concluded that the maximum hardness and bending strength are achieved by 95Mo-1.5Ni-3.5Fe alloy, which are HV 614 and 741 MPa, respectively. Combined with the analyses of bending fracture mechanism, the improvement relative to Mo-Ni alloy is likely attributed to the inhibition of the brittle phase.
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高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 33
·11604-11609
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IF 4.39
Guojuan Hai,Jianfeng Huang,Liyun Cao,Koji Kajiyoshi,Long Wang,Liangliang Feng,Yijun Liu,Limin Pan
Designing cost-effective bifunctional catalysts with high-performance and durability is of great significance for renewable energy systems. Herein, typical Fe, Ni-codoped W18O49/NF was prepared via a simple solvothermal method. The incorporation of Fe ions enhanced the electronic interaction and enlarged the electrochemically active surface area. The increased W4+ leads to a high proportion of unsaturated WO bonds, thus enhancing the adsorption capacity of water. The valence configuration of nickel (Ni) sites in such dual-cation doping is well adjusted, realizing a high proportion of trivalent Ni ions (Ni3+). Due to the orbital interactions, the Fe3+/Ni3+ ions and OER reaction intermediates exhibit strong orbital overlap. The positions of the valence band and conduction band are well modulated. As a result, the Fe, Ni-codoped W18O49/NF shows improved electrocatalytic activity, and achieves a low decomposition voltage of 1.58 V at 10 mA cm−2 and retains long-time stability.
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Kaiqiang Ma,Lan Zhang,Huizhong Ma,Na Li
In this study, the wear resistance of diamond dicing blades can be enhanced by electrodepositing a Ni-graphene coating. We prepared Ni-Gr (graphene)-diamond blades through composite electrodeposition in a nickel electrolyte containing varying concentrations of graphene. The microstructure of the composite coating was investigated using characterization techniques, while the deposition of the Ni-Gr was studied using commercial modeling software, namely the COMSOL® electrochemical module. The primary objective of this study was to investigate the pathways leading to the development of high-quality dicing blades. The results obtained from the COMSOL® simulations unveil the influence of graphene particles and cathode conditions on the microstructure and performance of the composite coating. Our experimental results demonstrate that the incorporation of graphene induces modifications in the texture of the Ni matrix, resulting in the emergence of a noncoherent phase boundary. This effect can be attributed to the preferential formation of nucleation sites at heterogeneous interfaces, which were facilitated by the embedding of graphene, resulting in non-uniform nucleation. Furthermore, to explore the mechanical properties of said noncoherent phase boundary, graphene electrodes were prepared using discharge plasma sintering, resulting in, a pure 20 μm thick Ni coating electrodeposited onto the graphene electrode. Micro-nano testing techniques using different peak loads at 25 °C were employed to analyze the mechanical behavior of the graphene substrate, Ni-Gr interface, and Ni phase. Nanoindentation testing revealed an interface adhesion strength of 12.89 N between the graphene substrate and the Ni coating. Indentation experiments in the Ni-Gr interface demonstrated that the elastic moduli of the interface were 23.91 GPa and 28.72 GPa at 20 mN and 300 mN loads, respectively. Additionally, the elastic moduli of the graphene phase was approximately between 6.25 % and 5.56 % that of the Ni phase.
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高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Jiaxing Zhang,Qi Jiang,Yongwang Li,Zheng Wang,Wanli Wang,Bingxin Zhu,Xingtao Wang,Kaiwei Wang,Yihao Wang,Yan Chen,Tianlei Wang,Xubin Zhang,Fumin Wang
SnO x clusters anchor and disperse Ni nanoparticles on Y zeolite. • Electronic transfer creates Ni δ+ sites, switching FOL adsorption flat to vertical. • Rearrangement Ea drops 52.9 to 38.8kJ·mol −1 ; over-hydrogenation Ea rises 59.9 to 88.3 kJ· mol −1 . • 10Ni/Sn-Y-30 affords 95.3% cyclopentanone yield at full conversion. The highly efficient and directionally selective hydrogenation-rearrangement of the biomass platform molecule furfural (FF) to high-value-added cyclopentanone (CPO) represents a core pathway for biomass upgrading and utilization. However, constructing highly active and selective non-noble metal catalysts that precisely suppress over-hydrogenation remains elusive. In this work, we report a SnO x cluster-modified Ni-based catalyst (10Ni/Sn-Y-30) supported on Y-type zeolite. According to the characterization and density functional theory (DFT) calculations, surface SnO x clusters act as robust anchoring sites for metallic Ni, thereby significantly boosting the dispersion of Ni nanoclusters. Furthermore, the directional electron transfer from Ni to SnO x creates electron-deficient Ni δ+ centers, which lowers the reduction energy barrier and optimizes the substrate adsorption configuration. The superiority of this regulation strategy is further corroborated by kinetic tests, attesting to its effective modulation of the rates of the primary and competing reactions. In an aqueous reaction system at 150 °C, the optimized 10Ni/Sn-Y-30 catalyst delivers exceptional catalytic activity, yielding a peak CPO yield of 95.3%. This study provides a novel design strategy for the precise structural modulation of low-cost, non-noble metal catalysts and the directional upgrading of biomass resources. Download: Download high-res image (125KB) Download: Download full-size image
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高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 150
·期 5
·1418-1426
·
IF 2.372
Ma Yuan,Liu Jiao,Chu Mo,Yue Junrong,Cui Yanbin,Xu Guangwen
Abstract The key challenge for CO 2 methanation, an eight-electron process under kinetic limitation, relies on the design of non-noble metal catalysts so as to achieve high activity at low reaction temperatures. In this work, four Ni-based catalysts with different supports were prepared and tested for CO 2 methanation at 250–550 °C in a fixed bed quartz reactor and further characterized to reveal the structure–function relationship. The Ni-based catalysts followed an activity order of Ni/CeO 2 > Ni/Al 2 O 3 > Ni/TiO 2 > Ni/ZrO 2 , especially at temperatures lower than 350 °C. H 2 -TPR and TPD results indicated that the interaction between nickel and support was strong and the metallic nickel was well dispersed in the Ni/Al 2 O 3 catalyst, while more amount of CO 2 was adsorbed on the weak basic sites in the Ni/CeO 2 catalyst. By establishing the correlation between the catalytic performance and the catalyst structure, it was found that the Ni nanoparticles and basic support serve as H 2 and CO 2 active centers respectively and cooperatively catalyze CO 2 methanation, resulting in high low-temperature reaction activity. Graphic Abstract High CO 2 conversion was achieved over Ni/CeO 2 catalyst at 300 °C for its high H 2 uptake on Ni nanoparticles and high CO 2 adsorption capacity on the support with weak basic sites and cooperatively to catalyze CO 2 methanation.
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高影响因子
RSC Advances
·
2020
·Vol. 10
·期 14
·8055-8065
·
IF 3.119
Wenpeng Han,Shanmin Wang,Xuekuan Li,Ben Ma,Mingxian Du,Ligong Zhou,Ying Yang,Ye Zhang,Hui Ge
The effect of Fe, Co and Ni promoters on supported MoS2 catalysts for hydrogenation of nitroarenes were systematically investigated via experiment, characterization and DFT calculation. It was found that the addition of promoters remarkably improved the reaction activity in a sequence of Ni > Co > Fe > Mo. Meanwhile Ni promoted catalyst with the best performance showed good recyclability and chemoselectivity for a wide substrate scope. The characterization results revealed that the addition of promoters decreased the interaction between Mo and support and facilitated the reductive sulfidation of Mo species to produce more coordinated unsaturated sites (CUS). DFT calculations showed that the addition of promoters increased the formation of CUS, and enhanced the adsorption of hydrogen. The influence degree of promoters followed the sequence Ni > Co > Fe > Mo, which was consistent with those of the activities. Nitrobenzene hydrogenation and hydrogen activation occurred at the S and Mo edge, respectively. The adsorbed hydrogen diffused from the Mo edge to the S edge to participate in the hydrogenation reaction. Mechanism investigation showed that the main reason for increased activity by the addition of promoters was the increase of amounts of CUS and the secondary reason was the augmentation of intrinsic activity of CUS. The present studies give a new understanding for promoter modified MoS2 catalysts applied for hydrogenation of nitroarenes.
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高影响因子
FUEL
·
2019
·
IF 5.128
Tengfei Yang,Congcong Liu,Chuan Li,Liyong Gan,Wenan Deng,Qingshan Niu
Nickel sulfide is regarded as one of the most promising substitutes for the best-performing disposable molybdenum catalyst in the hydrogenolysis of lignite and heavy residue, but its practical application is hindered severely by insufficient catalytic activity and a prohibitively large dosage. Herein, we report that the issues of activity and cost of nickel sulfide can be addressed simultaneously by employing a combination of iron incorporation and a dispersing strategy via oil-soluble ligands. Motivated by first-principles calculations where iron incorporation in nickel sulfide would lead to a better activity towards the rate-limiting step of hydrogenolysis compared with nickel sulfide alone, we successfully prepared a well-dispersed Fe-Ni-S catalyst by coordinating active metal salts with carboxylate ligands and a subsequent essential sulfurization. The synthesized Fe-Ni-S catalyst outperformed not only the monometallic nickel catalyst but also the commercial molybdenum catalyst in the hydrogenolysis of lignite and heavy residue, and exhibited a high conversion efficiency, hydrogen consumption, hydrogen/carbon product atomic ratio, and dispersibility of solid residues, with an economic nickel dosage of as low as ~250 μg·g −1 . Structural changes of raw coal and solid residues further confirmed the role of the Fe-Ni-S catalyst in facilitating the hydrogenolysis of lignite and heavy residue.
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高影响因子
危险品化学品经营许可证（带存储）