APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Xuesong Peng,Fan Meng,Jie Jiang,Yaqiang Li,Guangzhao Wang,Ruopeng Li,Jialuo Lin,Longhao Zhu,Linghui Meng,Zongtai Wang,Maozhong An
Ultra-thin copper foil is critical for high-density interconnects and flexible electronics, yet developing a reliable release layer remains challenging. Here, we report an amorphous Ni–W alloy release layer and systematically evaluate its performance through experimental characterization and theoretical analysis. The Ni–W alloy (59.9 % Ni, 40.1 % W) forms a smooth, defect-free surface with an average roughness of 0.9 μm. In 50-cycle peel tests, the average peel strength stabilizes at 0.038 N/mm with a standard deviation of only 0.003, demonstrating highly controllable and stable cyclic peel behavior. The release layer maintains thermal stability below 600 °C, and atomic diffusion of Ni and W at 200 °C over 50 h has negligible impact on the copper foil conductivity. Theoretical calculations indicate that the Cu/Ni–W interface exhibits lattice mismatch, leading to weak adhesion (W a d = 1.45 J/m 2 ); in contrast, a co-deposited Ni-enriched transition layer achieves coherent lattice matching, significantly enhancing Ni–W/Cu interfacial strength and enabling differential control of interface bonding. This study represents the first scalable electro-deposition of an amorphous alloy release layer, providing precise control over peel strength and robust industrial applicability for ultra-thin copper foil production.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
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IF 8.9
Qian Ren,Xiaoyu Zhang,Xin Zhang
Carbon fiber reinforced polymers (CFRP) are utilized in a variety of fields, but they are prone to delamination, which can cause substantial degradation to the properties and limit the usage. Here, Ni/PUF/PU@ER (NPPER) microcapsules were introduced into the composites to improve the interlaminar shear strength (ILSS). The PUF/PU@ER (PPER) microcapsules were first synthesized with epoxy resin as the healing agent, followed by electroless plating to deposit metal Ni on the surface. The microsphere compression tests demonstrated that the NPPER had superior strength (41.7 MPa) compared to the PPER. When 20 w.t.% PPER was added, the ILSS reduced to 32.8 MPa compared with the ILSS of the original specimen (36.7 MPa), and the healing efficiency increased to 81.8 %. However, due to the robustness of the NPPER, the ILSS increased to 40.3 MPa with 5 w.t.% NPPER, which was 9.8 % higher than that of the original specimen, and the highest healing efficiency was 52.0 % with 20 w.t.% NPPER. Furthermore, the NPPER with damage visualization was prepared using epoxy resin and 2′,7′-Dichlorofluorescein as core materials, which can be utilized to imply the occurrence and healing of damage by the change of color, promoting the development of intelligent and high-performance self-healing CFRP.
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Inorganic Chemistry Frontiers
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2025
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IF 6.4
Xiaopei Li,Xianxu Chu,Kefan Ying,Xi Chen,Peng Sun,Haiyun Xu,Lu Li,Jie Zhang,Wenjuan Li
The five novel nickel organic complexes featuring different electron-rich and electron-deficient groups were synthesized as electrocatalysts by using N-(aryl/alkyl)-2-isonicotinoylhydrazine-1-carbothioamide compounds in coordination with nickel acetate tetrahydrate and 1,10-phenanthroline. These Ni-complexes were characterized using infrared and Raman spectroscopy and were subsequently employed for the oxygen evolution reaction (OER) in water splitting under alkaline conditions. The overpotential and Tafel slope for Ni-based complex Ni-1 were as low as 454 mV and 111.90 mV dec-1, respectively, at a current density of 10 mA cm-2, indicating excellent electrochemical performance. Furthermore, Ni-1 demonstrated good electrochemical stability, with only minor voltage fluctuations observed during the continuous bubble generation over a 40 hours electrolysis period and nickel maintains a +2 oxidation state (Ni2+) in the complex both before and after the OER test via characterization of N2p spectra by X-ray photoelectron spectroscopy (XPS) measurements. This study confirms the electronic effect of substituent groups on the water-splitting ability of Ni-complexes bearing the two different organic ligands, showing that the overpotential and Tafel slope increase with a decrease in the electron-donating capacity of the substituent groups.
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Coatings
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2025
·Vol. 15
·期 7
·775
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IF 2.8
Qian Sun,Song Li,Longlong Jin,Jingyao Xiao,Tuoya Wulin,Xianbin Hou,Xianhui Zhang
With the continuous advancement of electromagnetic protection technologies, the development of lightweight electromagnetic wave-absorbing materials with excellent absorption performance has become a critical challenge in the field. In this study, commercially available hollow glass microspheres (HGMs) were employed as templates, and Ni2+/Co2+metal ions were used to catalyze the polymerization of dopamine (PDA), forming HGM@NixCoy/PDA precursors. Subsequent high-temperature pyrolysis yielded lightweight composite absorbing materials, denoted as HGM@NixCoy/C. This material integrates dielectric loss, conductive loss, magnetic loss, and resonance absorption mechanisms, exhibiting outstanding electromagnetic wave absorption properties. The absorption performance can be effectively tuned by adjusting the Ni-to-Co ratio, with the optimal performance observed at an atomic ratio of 2:3. At a filler loading of 20 wt.%, HGM@Ni2Co3/C achieved an effective absorption bandwidth (EAB) of 6.83 GHz (ranging from 10.53 to 17.36 GHz) and a minimum reflection loss (RLmin) of −27.26 dB. These results demonstrate that the synergistic combination of hollow glass bubbles and carbon-based magnetic components not only significantly reduces the material density and required filler content but also enhances overall absorption performance, highlighting its great potential in the development of lightweight and high-efficiency electromagnetic wave absorbers.
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Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 6
·3682-3688
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IF 10.7
Hujun Zhang,Li Qin,Michal Sedlacik,Petr Saha,Qilin Cheng,Haifeng Yu,Hao Jiang
Single-crystalline nickel-rich cobalt-poor layered oxides are promising cathode materials for lithium-ion batteries due to their high safety and competitive cost. However, the severe cation disorder and lithium/oxygen (Li/O) loss during the high-temperature calcination process result in slow Li-ion diffusion and inferior O stability. Herein, a LiNi0.85Co0.05Mn0.10O2 (NCM85) single-crystalline cathode was prepared at relatively lower lithiation temperatures by barium/aluminum (Ba/Al) co-doping. The increase in the c-axis caused by Ba doping with a larger ion radius and the reduction in Li/Ni disorder can enhance the Li-ion diffusion kinetics, while the strong Ba–O and Al–O bonds considerably boost the lattice O stability to alleviate O escape during the charging process. The optimized cathode exhibits a high reversible capacity of 206.5 mA h g−1 at 0.1C and 115.6 mA h g−1 at 5C. Impressively, 87.5% of initial capacity is still maintained after 500 cycles at 1C in a pouch-type full cell. This finding provides a viable and flexible method to resolve the kinetics and stability issues of other layered oxide cathodes.
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Materials
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2024
·
IF 3.1
Xiaofei Hao,Ran Wang,Xiumin Tan,Xiufeng Zhang,Xupo Liu,Zhaoyang Wu,Dongli Yuan
Fabricating efficient oxygen evolution reaction (OER) electrocatalysts is crucial for water electrocatalysis. Herein, the spinel-type high-entropy oxides of (Co, Fe, Mn, Ni, Cr) 3 O 4 were synthesized through the high-temperature calcination approach. The influences of calcination temperatures on structures and electrochemical properties were investigated. The optimized catalyst of HEO-900 contains the hybrid structure of regular polyhedrons and irregular nanoparticles, which is beneficial for the exposure of electrochemically active sites. It was identified that the abundant high-valence metal species of Ni 3+ , Co 3+ , Fe 3+ , Mn 4+ , and Cr 3+ are formed during the OER process, which is generally regarded as the electrochemically active sites for OER. Because of the synergistic effect of multi-metal active sites, the optimized HEO-900 catalyst indicates excellent OER activity, which needs the overpotential of 366 mV to reach the current density of 10 mA cm −2 . Moreover, HEO-900 reveals the prominent durability of running for 24 h at the current density of 10 mA cm −2 without clear delay. Therefore, this work supplies a promising route for preparing high-performance multi-metal OER electrocatalysts for water electrocatalysis application.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Mingkai Liu,Zihan Wan,Yunlian Liu,Qian Jia,Ruqi Zhang,Yang Li,Ying Pan,Hongguang Jin
Hydrogen production is crucial for supporting the energy transition and achieving carbon neutrality goals. However, conventional natural gas steam reforming suffers from high temperatures, which lead to substantial exergy losses, promote carbon deposition, and compromise operational stability. Here, a mid-temperature (500–600 °C) chemical looping steam reforming (CLSR) process is proposed for efficient natural gas conversion. Fe Ni oxygen carrier particles were developed by varying Fe/Al precursors, calcination temperatures, and powder sizes to achieve modulated physico-chemical properties. Systematic evaluation of chemical reactivity and physical indicators identified nm-Fe 2 O 3 -γ-Al 2 O 3 calcined at 1200 °C as the optimal formulation, combining high reactivity with a mechanical strength of 55.3 N. Reaction behavior was further investigated in a bench-scale packed-bed reactor with 100 g oxygen carrier loading. At 600 °C and a steam-to‑carbon ratio of 1.5, the optimized process achieved over 85 % natural gas conversion and nearly 100 % ethane conversion, yielding a hydrogen production of 25 mL g OC −1 and an H 2 /CO ratio of 1.8. In addition, long-term stability tests confirmed that the oxygen carriers retained their oxygen transfer capacity and microstructure after 1000 isothermal redox cycles, while cold attrition tests showed a mass loss of only 0.73 % over 2 h. Furthermore, in-situ DRIFTs and XRD provided clear mechanistic insights into the CLSR process over Fe Ni oxygen carriers, confirming the reaction pathway of natural gas activation and hydrogen production. Collectively, these findings highlight the promising performance of CLSR as an efficient route for low-carbon hydrogen production from natural gas.`.
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Molecular Catalysis
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2025
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IF 4.9
Shijun Huang,Yu Song,Shansi Zhong,Panpan Chang,Jinshi Dong,Jiaqiang Yang
Ni based catalysts are widely used in dry reforming of methane (DRM) but still face the issue of deactivation caused by sintering and carbon deposition. Pt doped Ni-Al 2 O 3 catalyst was found of great durability which kept 100 % conversion of CO 2 over 300 h without detectable loss in activity at 700 °C, while Ni-Al 2 O 3 catalyst only maintained ∼10 h at the same condition. It is revealed that Pt and Ni are separately dispersed on Al 2 O 3 with the structure of small Pt particles distributing around Ni like satellites. Kinetic experiments, temperature-programmed surface reactions (TPSR) and DFT calculations indicated that CH 4 prefers to dissociatively adsorb on Pt surface but is hard to deeply crack to carbon because of the high energy barriers. As a result, the respective adsorption of CO 2 on Ni and CH x on Pt surface largely reduced the bear of competitive adsorption and activation of both reactants on individual Ni and thus brought enhanced activity. Additionally, surrounding Pt effectively suppresses the sintering of Ni during reaction.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Beiping Wang,Hao Du,Fenggang Chao,Zhengke Liu,Yaoyao Wang,Zhongli Zou,Jiandong Wu,Chunping Hou
The Hf-doped Li[Ni 0.8- x Hf x Co 0.1 Mn 0.1 ]O 2 ( x = 0–0.04) materials were synthesized by the co-precipitation process combined with high-temperature solid-state reaction. First-principles calculations and Rietveld refinement confirm that Hf doping induces dual-pillar effect by forming more stable HfO 6 octahedrons in the transition metal layers and more NiO 6 octahedrons in the lithium layers, which collectively stabilize the layered structure. Moreover, Hf doping facilitates lithium-ion transport by lowering the diffusion energy barrier and enhances the electronic conductivity of Hf-doped NCMs by reducing the band gap. The 2 mol% Li[Hf 0.02 Ni 0.78 Co 0.1 Mn 0.1 ]O 2 cathode delivers a specific discharge capacity of 205.1 mAh g −1 at 20 mA g −1 and presents an impressive capacity retention of 87.0 % after 100 cycles at 200 mA g −1 at room temperature, with 13.6 % higher than the pristine cathode. At 1 A g −1 charge/discharge current density, the 2 mol% Hf-doped cathode achieves a discharge capacity of 142.4 mAh g −1 . These results further demonstrate the effectiveness of dual-pillar effect in constructing stable layered microstructure, significantly improving cycling stability and high-rate performance.
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ACTA PHYSICO-CHIMICA SINICA
·
2023
·
IF 10.9
Kezhen Lai,Fengyan Li,Ning Li,Yangqin Gao,Lei Ge
Hydrogen is an important zero-pollution green energy source with potential for alleviating environmental contamination and energy shortages. Hydrogen evolution via solar-energy-induced semiconducting water splitting is among the most environmentally friendly methods available to date. In this study, a metal–organic-framework-derived, Ni-decorated carbon nanotube (Ni-CNT) is used as a non-noble co-catalyst. This Ni-CNT is grown in situ on ZnIn 2 S 4 nanosheets using a simple one-step oil bath strategy, wherein Ni nanoparticles are wrapped around the top and cross sections of the nanotubes, preventing their agglomeration. Notably, Ni-CNT/ZnIn 2 S 4 heterostructures feature intimate contact interfaces that promote charge transfer, facilitating their use as efficient photocatalysts for hydrogen evolution. The 38Ni-CNT/ZnIn 2 S 4 sample exhibits a high H 2 production rate (12267 μmolꞏh −1 ꞏg −1 ), with an apparent quantum efficiency (AQE) of 11.3% under 420 nm monochromatic light irradiation, which is nearly 6.4 times that of pure ZnIn 2 S 4 . The results of X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) corroborate the observations on Ni-CNT/ZnIn 2 S 4 heterostructures. Electrochemical measurements reveal that the combination of the Ni-CNT and ZnIn 2 S 4 facilitates the transfer of photogenerated electrons and effectively prevents rapid recombination of photocarriers, thus improving the hydrogen evolution performance of ZnIn 2 S 4 . Electron spin resonance (ESR) results further prove that cocatalyst Ni-CNTs are beneficial for prolonging the lifetimes of ZnIn 2 S 4 photogenerated electrons, thereby achieving effective charge separation. A charge transfer pathway in the heterojunction interfaces is further explored and confirmed by density functional theory (DFT) calculations. The difference in the Fermi level energy ( E f ) contributes to both charge migration and the generation of a built-in electronic field (BEF), indicating that the energy band of ZnIn 2 S 4 bends downward, which is favorable for photogenerated electron flow from ZnIn 2 S 4 to the Ni-CNT electron acceptor. The results of planar-averaged electron density difference analysis confirm that the hot electrons are transferred from Ni nanoparticles to the CNT and then to the ZnIn 2 S 4 nanosheets, indicating the formation of a photogenerated electron transfer pathway of ZnIn 2 S 4 → CNT → Ni. Furthermore, Gibbs free energy of H* adsorption (Δ G H* ) and crystal orbital Hamilton population (COHP) analysis indicate that Ni nanoparticles can serve as active sites, promoting H 2 evolution. Thus, the present study formulates a new strategy for developing low-cost, high-efficiency, non-noble-metal co-catalysts for photocatalytic hydrogen production. Download: Download high-res image (88KB) Download: Download full-size image
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ACS Applied Optical Materials
·
2024
·
IF 0
Yonghang Li,Yang Lu,Haonan Ju,Wei Wang,Dong Tu,Hongyu Lu,Jiayu Wang,Hua Zou
Near-infared phosphor-converted light-emitting diodes (NIR pc-LEDs) are next-generation NIR light sources due to their long life, low cost, and compactness. Unfortunately, there is a lack of efficient NIR-II phosphors with high efficiency and large full width at half-maximum (fwhm) that can be excited by violet LED. Here, a series of Cr3+/Ni2+-codoped LiAlSiO4 with unprecedented emission peaking at 1150 nm (∼1000–1400 nm, fwmh ∼191 nm) were synthesized via a solid-state reaction. More importantly, the phosphors exhibit high efficiency and excellent thermal stability under violet emission excitation. Moreover, the NIR pc-LED devices as a NIR-II light source have been fabricated through a combination violet LED and optimized LiAlSiO4:Cr3+/Ni2+ phosphors, which are well applied to high-penetration imaging and nondestructive fruit damage inspection. These results indicate that the LiAlSiO4:Cr3+/Ni2+ phosphors have great potential applications as NIR light sources.
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Arabian Journal of Chemistry
·
2021
·
IF 5.165
Na Li,Kai Yuan,Tengjia Gao,Shun Li,Jianliang Qin,Yirong Zhu,Jingjing Du,Lijian Xu,Jianxiong Xu
Design of electrode materials with excellent electrochemical properties for advanced energy storage device are important to the sustainable development of energy resources. In this manuscript, a novel hierarchical nanoporous carbon@nickel hydroxide (HNCMs@Ni(OH) 2 ) composites were prepared through simple in-situ chemical deposition of Ni(OH) 2 nanocrystals on HNCMs. By tailoring the deposition amount, core–shell structured rambutan-like HNCMs@Ni(OH) 2 microspheres with hairy nickel hydroxide nanocrystal covered on HNCMs were obtained. Ascribed to the high specific capacitance of nickel hydroxide and the interconnected hierarchical porous structure of HNCMs, the resultant rambutan-like HNCMs@Ni(OH) 2 microspheres as electrode materials display outstanding electrochemical properties including high specific capacity of 248.9 mAh/g at 1 A/g and good capacitance retention of 62.9% at 20 A/g. Furthermore, a hybrid supercapacitor with rambutan-like HNCMs@Ni(OH) 2 microspheres as cathode and HNCMs as anode were assembled and showed a comparable energy density of 41.3 Wh/kg at the power density of 173.3 W/kg and high capacity retention of 85.2% after 20,000 cycles at 5 A/g. As a proof of concept example, the fabricated hybrid supercapacitor can be utilized as energy source to instantaneous light up a red LED indicator. We envisioned that the as-prepared rambutan-like HNCMs@Ni(OH) 2 microspheres have great potential in constructing of advanced energy storage devices.
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危险品化学品经营许可证（带存储）