APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Zenghao Shi,Zhou Ren,Wenqiang Yang,Jingwei Li,Yang Zhao,Wenhao Cui,Feifei Xu,Shuwen Yu,Dehui Deng,Li Yan,Yunjie Ding
Ni/Rh nanoalloy matches the rates of two sub-reactions for urea electrosynthesis. • Rh-driven *CO dispatching redirects the reaction pathway from CO to urea. • Comprehensive in situ ATR-SEIRAS elucidates the distinct roles of Ni and Rh. • The FE Urea /FE CO for Ni/Rh nanoalloy boosts 30 times than that of Ni-BNC. The electrocatalytic co-reduction of CO 2 and nitrate (NO 3 - ) presents a sustainable route for urea synthesis, yet it is severely hampered by mismatched activation rates of the two sub-reactions (CO 2 reduction reaction and nitrate reduction reaction). Herein, building on our previous study of Ni-BNC for CO 2 to CO conversion, we constructed a Ni/Rh nanoalloy catalyst (Ni/Rh-BNC) via Rh-incorporation strategy to effectively redirect reaction pathway to urea from CO. Systematic in situ ATR-SEIRAS and Raman spectroscopy provide mechanistic insights into the intermediate evolution and reaction pathway switching. While Ni acts as a *CO generator, the incorporated Rh species serves a triple regulatory role: (i) activating NO 3 - to balance the two sub-reaction rates; (ii) stabilizing *CO intermediates generated from adjacent Ni sites via *CO transfer; and (iii) directly initiating C-N coupling to form urea. This Rh-driven *CO “dispatching” mechanism suppresses CO desorption and steers the pathway toward urea formation. Consequently, the urea-to-CO Faradaic efficiency (FE) ratio for Ni/Rh-BNC boosts nearly 30 times than that of Ni-BNC, achieving a urea FE of 31.2% at −0.7 V vs. RHE, with a maximum urea yield of 7981.8 mg·g metal −1 ·h −1 under low metal loading conditions. This strategy underscores a promising blueprint for rational catalyst design of dual metal sites enabling reaction pathway redirection and sub-reaction rate matching for multi-step electrocatalytic reactions. Download: Download high-res image (195KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Lin Tao,Sun Yaping,Wang Bo,Shao Huiping
In order to get a filter with oxidation resistance at high temperature, Ni–Cr alloy foam was prepared by vacuum evaporation deposition chromium on pure nickel foam. The effects of evaporation temperature and evaporation time on the Cr content, microstructure, compressive property and oxidation performance of the Ni–Cr alloy foams were investigated. The Ni–Cr alloy foam has a filament diameter of approximately 60–130 μm and a pore size of 200–330 μm, respectively. The results showed that increasing evaporation temperature and extending evaporation time can significantly increase Cr deposition and improve the uniformity of element distribution. The Ni–Cr alloy foam prepared by evaporation at 1100 ℃ for 1 h has a Cr content about 22.9 wt%, and its compressive strength reached 5.5 MPa at a strain of 0.35 while no fracture occurred. The Ni–Cr alloy foam has oxidation rates of 71.6, 79.2 and 171.0 mg/(m 2 ·h) at 600 °C, 700 °C and 800 °C, respectively, showing a good oxidation resistance. Therefore, vacuum evaporation deposition can realize alloying of pure nickel foam with chromium to get Ni–Cr alloy foam, with the characteristics of simple process, controllable composition and good properties.
✓ 已验证
DOI
高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 14
·e70928
·
IF 4.1
Jiaqi Cai,Kunlin Li,Jiang Li,Moshu Tan,Jingdong Lin,Shaolong Wan,Shuai Wang
Non-thermal plasma enables ammonia synthesis under mild conditions, but net performance is often limited by inefficient use of transient reactive species and plasma-driven NH 3 decomposition. Here we demonstrate that microporous confinement becomes decisively beneficial only when coupled to metal active sites. By benchmarking Ni catalysts supported on zeolites with distinct micropore architectures (BEA, MOR, FAU) against mesoporous and nonporous analogues in a dielectric barrier discharge (DBD) reactor, FAU emerges as the most effective microporous partner and delivers markedly improved activity and energy efficiency over mesoporous benchmarks. We elucidated the origin of this advantage using targeted controls (alkaline treatment/ion exchange), plasma electrical diagnostics (Q–V analysis/ignition behavior), and N 2 /H 2 /NH 3 adsorption/desorption probing under plasma. The results support a dual role of FAU micropores: enriching plasma-generated N/H species near Ni sites via confinement-enhanced residence time, and suppressing NH 3 loss through selective uptake into plasma-inaccessible micropores. MgO basic promotion further mitigates hydrogen over-coverage on Ni, yielding 7.55 mmol·h −1 ·g cat −1 and 1.65 g NH3 ·kWh −1 , competitive with reported Ni-based DBD plasma-assisted catalysts under comparable mild conditions. These findings establish micropore–metal synergy in zeolite-supported Ni catalysts as a guiding design principle for plasma-assisted ammonia synthesis. Graphical Micropore–metal synergy in zeolite-supported Ni catalysts promotes plasma-assisted ammonia synthesis by enriching plasma-derived N/H species and suppressing NH 3 decomposition. Additional MgO promotion relieves H over-coverage on Ni, further improving the NH 3 formation rate and energy efficiency.
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Huazhang Zhou,Mingle Chu,Peng Gao,Xudong Li,Yongming Zhu
High-voltage degradation of Ni-rich single-crystal layered oxide cathodes (SC-NCM) is closely coupled with the cathode–electrolyte interface, where parasitic reactions, surface reconstruction, and kinetic deterioration are readily activated during deep delithiation. To clarify the role of interfacial reaction pathways in this degradation process, electrolyte additive chemistry was used as a molecular tool to regulate the initial interfacial reaction pathway without altering the bulk structure of the cathode. The results reveal that an uncontrolled interface accelerates electrolyte decomposition, charge-transfer resistance growth, Li + transport deterioration, high-voltage phase irreversibility, and layered-to-rock-salt surface reconstruction. In contrast, additive-regulated cathode–electrolyte interphase (CEI) formation stabilizes the interfacial reaction environment, suppresses parasitic surface reactions, and preserves charge-transfer and Li + diffusion kinetics during deep delithiation. Moreover, the regulated interface maintains the reversibility of the H2–H3-related phase evolution and mitigates stress concentration during the structurally sensitive phase-transition stage. This work demonstrates that regulating the initial cathode–electrolyte reaction pathway can mitigate interface-triggered degradation in SC-NCM, highlighting interfacial chemistry regulation as an effective strategy for stabilizing SC-NCM under high-voltage operation. Download: Download high-res image (89KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Fengyu Tian,Guangzheng Sun,Xianfu Zeng,Jingjing Liu,Yuhao Liang,Yuan Pan,Bin Dong,Yichuan Li,Yanpeng Li,Hailing Guo,Bin Liu,Chenguang Liu,Yongming Chai
Ni loading governs the structure and electronic properties of NiMoWS phases. • Moderate Ni promotes an optimal -SH/CUS balance at Mo(W) edges. • Excess Ni disrupts -SH/CUS matching, suppressing hydrodesulfurization activity. Stringent environmental regulations and the need to process heavy, sour crudes are driving the development of advanced hydrodesulfurization (HDS) catalysts, particularly Ni-promoted Mo/W sulfide catalysts. Although the promotional role of Ni in sulfide HDS catalysts is well recognized, the origin of activity suppression under Ni-rich conditions remains unclear. In this work, a series of high-loading NiMoW/SiO 2 catalysts with varying Ni contents were investigated to clarify why further Ni addition leads to activity suppression in the HDS reaction under Ni-rich conditions. Combined Py-IR, EPR, Raman, XPS, and DFT analysis reveal that the key factor is the balance between -SH and coordinatively unsaturated sites (CUS) on the sulfide surface. An appropriate Ni content increases the abundance of catalytically effective sites while maintaining favorable -SH/CUS matching, leading to the highest HDS activity for Ni 1 Mo 1 W 1 . In contrast, excess Ni causes a continuous increase in the relative abundance of -SH species without a corresponding effective generation of additional CUS sites, thereby disrupting the -SH/CUS balance and suppressing DBT conversion. The optimized Ni 1 Mo 1 W 1 catalyst also exhibited stable performance over five cycles and a 1.47-fold higher relative volume activity than the industrial NiMo/γ-Al 2 O 3 reference catalyst (8 MPa, 300 °C), and good stability during a 360 h real-oil hydrotreating test. This work identifies -SH/CUS imbalance as a major origin of activity suppression under Ni-rich conditions in NiMoW catalysts. Download: Download high-res image (170KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Wang Lei,Jia Bingzhe,Yang Huailin,Qiang Xinrui,Li Jiarui,Liu Yichi,Li Zhiqiang,Wang Jialei,Wu Xinming
The development of hybrid supercapacitors has accelerated to meet the demand for fast-charging and discharging energy storage technologies in automotive and other energy storage applications. These supercapacitors combine the fast-charging benefits of capacitors with the high-energy density of batteries. To achieve this, it is essential to develop electrode materials with excellent electrochemical activity and rapid ion diffusion capabilities. This paper employs metal–organic framework (MOF) and MXene composites to address these challenges. Specifically, a one-dimensional linear nickel metal–organic framework (Ni-MOF) is grown in situ between MXene layers. The structure and morphology of the Ni-MOF were analyzed using X-ray diffraction, transmission electron microscopy (TEM), and scanning electron microscopy (SEM).The abundant Faradaic active sites and the enhanced kinetics from the synergy between the one-dimensional hollow structure and the two-dimensional layered structure resulted in a specific capacitance of 960 F g −1 for the Ni-MOF/MXene composite at a current density of 0.5 A g −1 . A Ni-MOF/MXene//AC device with an operating voltage of 1.6 V was also fabricated, exhibiting a notable energy density of 26.1 Wh kg −1 and power density of 8000 W kg −1 . The device maintained 92.4% of its specific capacity after 5000 cycles, demonstrating excellent electrochemical performance. This study not only showcases the significant potential of Ni-MOF/MXene composites in electrochemical energy storage but also lays a theoretical foundation for the development of high-efficiency supercapacitors. Graphical abstract This study utilizes metal-organic framework (MOF) and MXene composites to address energy storage challenges. A one-dimensional Ni-MOF is grown in situ between MXene layers, resulting in a specific capacitance of 960 F g⁻¹ at 0.5 A g⁻¹. A Ni-MOF/MXene//AC device was also created, with an operating voltage of 1.6 V, an energy density of 26.1 Wh kg⁻¹, and a power density of 8000 W kg⁻¹. The device retained 92.4% of its capacity after 5000 cycles, demonstrating excellent performance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Ting Zhang,Juan Huang,Yongbin Yang,Chunmei Li,Jianfeng Tang,Qing Li,Hua Lin
The development of bifunctional non-noble metal electrocatalysts with high activity and stability remains a significant challenge. In this work, Fe@Ni aerogels with core-shell structure were synthesized by sol-gel method. The unique network-like architecture and amorphous core-shell structures of Fe@Ni aerogels provide abundant defects and unsaturated sites. Moreover, the tunable surface electronic structure enhances the availability of active catalytic sites, resulting in outstanding catalytic performance for both the oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). For OER, the FeNi 2 aerogel requires only an overpotential of 215 mV to achieve a current density of 10 mA cm −2 , along with a low Tafel slope of 31.7 mV dec −1 and excellent stability. For MOR, its specific and mass activities were as high as 213.6 mA cm −2 and 106.8 A g −1 , respectively. In addition, this study also elucidated the mechanism of the excellent bifunctional catalytic activity of Fe@Ni core-shell aerogels, which provides a new idea for the development of other high-activity non-precious metal electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 6
·576
·
IF 4
Lanqi Wang,Hui Ni,Jianing Yu,Jingyuan Zhang,Bin Zhao
In recent years, transition metal-based catalytic materials have garnered considerable attention, particularly those exhibiting high catalytic efficiency toward both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). In this work, a self-supporting ternary transition metal phosphide (CoFeNi0.2P) with a hierarchical structure was synthesized using the Prussian blue analogue (PBA)/zeolitic imidazolate framework-L (ZIF-L) template. Benefiting from the hierarchical structure of the PBA/ZIF-L precursor and the electronic structure modulation induced by Ni doping, the resulting CoFeNi0.2P demonstrates impressive bifunctional electrocatalytic activity. Specifically, in 1 M KOH electrolyte, the CoFeNi0.2P catalyst requires an overpotential of only 88 mV to deliver 10 mA cm−2for the HER and 248 mV to achieve 50 mA cm−2for the OER. Moreover, it demonstrates satisfactory stability toward both the HER and OER. When integrated into a two-electrode electrolyzer, CoFeNi0.2P enables a current density of 10 mA cm−2at a cell voltage of 1.59 V, maintaining robust performance for over 25 h. This study provides a feasible strategy for the rational design of hierarchical electrocatalysts for efficient overall water splitting.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zhang Tianyu,Wang Weibo,Liu Wenxian,Guo Zhengxiao,Liu Junfeng
Reconstruction of metal-organic frameworks often occurs under reaction conditions, thereby impeding true active species identification and hindering mechanism understanding. Herein, we present the mechanistic insight underlying the electrochemical synthesis of deprotonated anion of H 2 O 2 (HO 2 − ) via 2e − oxygen reduction by ultrathin Ni-benzenedicarboxylic acid (NiBDC), guided by its thickness-dependent performance and pH-induced reconstruction behavior. The real active species are identified as alkaline-reconstructed β-Ni(OH) 2 that is chemically coupled with 1,4-benzenedicarboxylic acid residual ligand. The hybrid catalyst is characterized to exhibit an optimized surface electronic structure, which improves the intrinsic activity and selectivity. Operando characterization and theoretical simulations further reveal that the residual ligand functionalization significantly boosts the formation and facilitates the adequate binding of *OOH intermediates. Thus, the ligand-functionalized Ni(OH) 2 exhibits high HO 2 − selectivity (>90%) in 0.1 M KOH across a broad current density up to 200 mA cm −2 . Moreover, high HO 2 − production rate of 13.7 mol g cat −1 h −1 with significant accumulation of 2.0 wt.% HO 2 − under alkaline conditions is achieved at 200 mA cm −2 over 100 h, suggesting the promising potential for large-scale electrosynthesis of HO 2 − in industrial applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Wei Shan,Man Liang,Jianan Zan,Lin Liu,Lu Guo,Kwan San Hui,Min Luo,Fuming Chen
The sustainable recovery of valuable metals from spent lithium-ion batteries (LIBs) is crucial for a circular and environmentally friendly economy as the LIBs market expands. However, separating and recovering Ni 2+ and Co 2+ is challenging due to their similar physicochemical properties. This study presents a new approach to enhance Ni/Co separation by manipulating chloride coordination to impart opposite charges to the metal ions. By adjusting the Cl − concentration, Ni 2+ and Co 2+ are selectively complexed into [Ni(H 2 O) 5 Cl] + and [CoCl 4 ] 2− clusters, respectively. Coupling this coordination strategy with electrodialysis, we achieved a remarkable Ni 2+ /Co 2+ separation selectivity of up to 370.70. When applied to NCM or NCA battery leachate solutions, the separation selectivity remained high, reaching 90.60 and 109.42, respectively, despite variations in metal ion concentration ratios. This chloride coordination-assisted electrodialysis strategy offers a promising alternative for Ni/Co separation, a critical step in the hydrometallurgical recycling of LIBs
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zengkun You,Tian Tang,Kai Ou,Yuxiang Ni,Yudong Xia,Hongyan Wang
The escalating global energy crisis has intensified research efforts toward developing heterogeneous structures capable of addressing the sluggish kinetics of the hydrogen evolution reaction and oxygen evolution reaction in electrocatalysis. In this study, a novel strategy for the design of highly efficient bifunctional electrocatalysts was proposed. Uniform Ni nanolayers were successfully deposited on Nb 2 CT x /CNT hybrid supports through a combination of CVD and magnetron sputtering techniques. The resulting Ni/Nb 2 CT x /CNT@NF catalyst demonstrated exceptional electrocatalytic performance in 1 M KOH. For HER, it achieved remarkably low overpotentials of 41 mV@10 mA cm −2 and 196 mV@100 mA cm −2 . Similarly, for OER, the catalyst exhibited outstanding activity with overpotentials of 299 mV@20 mA cm −2 and 337 mV@50 mA cm −2 . Furthermore, the catalyst maintained stable performance at 20 mA cm −2 for 48 h without significant degradation, highlighting its excellent long-term stability. The superior catalytic performance can be attributed to several key factors: (1) The uniform distribution of Ni nanolayers enhances intrinsic conductivity and increases the density of active sites; (2) The incorporation of CNTs expands the reaction interface, facilitating charge and mass transfer; and (3) The electronic interaction between Nb 2 CT x and Ni further optimizes the catalytic kinetics.
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 1
·e01678
·
IF 3.9
Zien Bao,Xiaohong Ren,Xiaoxin Wang,Zeming Rong
This study focuses on the catalytic transformation of a lignin model compound, 4-propylguaiacol, without external hydrogen. The reaction using a Ni/MgO catalyst and water as the solvent, conducted at 220°C under 5 bar N 2 for 2 h, achieved 97.8% conversion and 94.8% selectivity toward phenolic products. During the reaction, the methoxy group in 4-propylguaiacol is cleaved from the aromatic ring at Ni active sites and subsequently reacts with hydrogen radicals generated from water dissociation to form methanol. The methanol then undergoes aqueous-phase reforming, providing additional in-situ hydrogen to drive the hydrodeoxygenation process. The Ni/MgO catalyst showed good recyclability over three consecutive cycles, with only a slight decline in activity. Furthermore, this catalyst was applied to the depolymerization of real lignin, and the effects of reaction parameters on product yield were investigated. Among the tested conditions, a maximum monomer yield of 76.7 wt% was obtained at 280°C under 5 bar N 2 for 6 h. Graphical This work presents a sustainable strategy for producing phenolic monomers from lignin-derived compounds using non-noble metal catalysts without external hydrogen.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）