Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Zi-Ye Liu,Jiu-Jiu Ge,Ji-Ming Hu
Nickel foam (NF) self-supported NiFe LDH electrodes have been widely studied for their excellent oxygen evolution reaction (OER) performance. However, the performance of electrodes synthesized via conventional electrodeposition or hydrothermal methods are still unsatisfactory owing to their insufficient specific surface area and suboptimal activity. In this study, we report NF-supported NiFe LDH electrodes directly derived from NF-supported-bimetallic MOF-74(NiFe). The as-prepared NiFe LDH exhibited a hierarchical structure and inherited the molecular level porosity of the MOF-74 precursor. The as-prepared electrode underwent self-optimization during the OER process, significantly increasing the electrochemical active surface area and providing numerous catalytic sites. In addition, the 2,5-dihydroxyterephthalate (DHTP) ligand released from MOF-74 during its dissociation chemically modified NiFe LDH. This ligand promoted the formation of Ni(III) and resisted Cl− corrosion. Thus, LDH-MOF74@NF outperformed almost all previously reported NiFe LDH@NF electrodes, exhibiting excellent OER performance and high durability in KOH and KOH/NaCl solutions with overpotentials of 244 mV and 254 mV at 100 mA cm−2, respectively.
研究领域:
材料科学
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电化学
·
催化
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
Jiajun Tang,Yanni Shen,Xueli Miao,Hao Qin,Dandan Song,Yanting Li,Yuning Qu,Zhen Yin,Jiahao Ren,Lili Wang,Bing Wang
Designing a reasonable structure for electrode materials is critical to increase the performance of supercapacitor . Herein, the 3D hierarchical structure composite materials contained carbon cloth, cobalt carbonate hydroxide nanorod and metal-organic frameworks derived layered double hydroxide cage hybrid arrays (CC@CCH-MOF-LDH HAs) are designed. This unique hierarchical structure and the synergistic effect of the bimetallic system improve the electrical conductivity of the material, provide more active sites and shorten the ion transport path, which are beneficial to increase the electrochemical performance of the composite material. Electrochemical measurements show that CC@CCH-MOF-LDH HAs have high specific capacitance of 1700 F g −1 at current density of 2 A g −1 , superior rate capability (even the current density was increased to 50 A g −1 , the capacitance retention rate reached 78.2%) and good cycling stability, which indicate that the CC@CCH-MOF-LDH HAs with 3D hierarchical structure is a very promising supercapacitor electrode material.
研究领域:
材料科学
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电化学
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能量存储
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纳米材料
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超级电容器
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 21.1
Junyang Zhou,Shudong Chen,Xiong Du,Jian Chen,Lielie He,Shuo Zhao,Yangen Zhou,Yanqing Lai
Alkaline seawater oxidation has attracted significant attention for hydrogen production via water splitting. However, the high concentration of Cl - and the corrosive intermediates from Cl - oxidation reaction pose serious challenges to the activity and durability of oxygen evolution reaction (OER) catalysts. Here, ultrafine NiFe-LDH supported on defect-rich graphite nanosheets is synthesized via a spatial confinement strategy. During the OER process, carbon defects of the graphite support undergo in situ oxidation to generate CO 3 2- species, which adsorb onto the ultrafine NiFe-LDH surface, forming an electrostatic repulsion network that effectively blocks Cl - access to active sites. Theoretical calculations further confirm that CO 3 2- adsorption modulates the electronic structure of catalytic active centers, enhancing their intrinsic activity. Consequently, the catalyst achieves a low overpotential of only 320 mV under a current density of 1 A cm −2 in simulated seawater and an outstanding selectivity with a Faradaic efficiency of 99.8 %. Under practical alkaline seawater, it maintains stable operation for over 1000 h at 0.5 A cm −2 . This work offers a promising route for designing high-performance and durable electrocatalysts for alkaline seawater electrolysis.
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 6.9
Zhengquan Jiang,Zehan Zhang,Chuanwei Qiao,Aiyun Jiang,Xiaoyi Hu,Shihao Bai,Peisong Liu,Shengmao Zhang,I.N. Kavaliova,Maksim V. Prozhega,Weihua Li
High-performance lubricants are vital for industrial machinery operating under extreme loads and temperatures, yet conventional additives often fail to meet modern industrial demands due to limited tribological performance. This study reports an oleylamine-modified nickel-iron layered double hydroxide-molybdenum disulfide (OA-NiFe-LDH/MoS 2 ) nanocomposite, synthesized under mild conditions via in-situ surface modification in a one-pot liquid-phase route. The rigid NiFe-LDH lamellae provide abundant adsorption sites and cooperate with the low-shear-stress characteristic of flexible MoS 2 nanosheets to enable fast adsorption and high-load lubrication. Anti-wear and friction-reduction of the nanocomposite in poly-α-olefin-6 (PAO6) base oil were evaluated on a four-ball friction tester. Parallel tests on pristine OA-MoS 2 nanoparticles were conducted to isolate the contribution of the LDH component. At 75°C and 392 N, coefficient of friction (COF) decreased by 36 % to 0.066, with exceptional anti-wear performance maintained at 150°C, significantly outperforming neat PAO6 and OA-MoS 2 alone in steel-steel contacts. Spectroscopic and thermal analyses demonstrate superior dispersibility, while surface characterization reveals that the nanocomposite promotes extensive tribochemical formation of sulfides and oxides, forming a durable transfer film that minimizes metal contact and wear. Synergistic interplay between adsorption capacity of NiFe-LDH and lubricity of MoS 2 enables robust physical and chemisorbed films, ensuring stability under extreme conditions. Thermal stability and oxidation resistance of the nanocomposite mitigate lubricant degradation, offering a promising strategy for designing energy-efficient, durable lubricants for high-load, high-temperature industrial applications, with substantial potential to lower operational costs and environmental impact.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Minghao Li,Ye Zhang,Huiqi Shao,Guangwei Shao,Jinhua Jiang,Nanliang Chen,Jun Wang,Siyi Bi
Fabric-based electromagnetic wave (EMW) absorbers have attracted widespread attention due to their favorable flexibility. However, most fabric-based EMW absorbers are manufactured via surface coating on conventional fabric substrates, which not only confines the EMW-absorbing behaviors to the fabric exterior but also poses potential environmental hazards with the involvement of organic solvents during production. In this work, a green strategy is proposed for producing intrinsic EMW-absorbing fibers through an aqueous process, with the senary high-entropy layered double hydroxide integrating graphene oxide (GO@SHE-LDH) as a functional constituent and the sodium alginate (SA)-waterborne polyurethane (WPU) dual-network system as a fiber matrix. The GO@SHE-LDH/SA-WPU (GLSW) fibers are woven into plain-weave fabrics, exhibiting a minimum reflection loss (RLmin) of −69.6 dB and a maximum effective bandwidth (EABmax) of 7.1 GHz below 2.2 mm thickness, with favorable terahertz shielding/absorption performance (49.8 dB/45.6 dB) covering the 0.5–4.5 THz band, which is attributed to the synergistic EMW-absorbing effect of multiscale mechanisms. This work provides a promising eco-friendly method to produce functional fibers toward EMW absorption.
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DOI
PubMed
高影响因子
Small
·
2026
·
IF 11.8
Zhiyang Gao,Yujie Song,Kaili Wan,Shubo Tian,Aijuan Han,Junfeng Liu
Composite membranes play a pivotal role in alkaline water electrolysis for green hydrogen production. However, current membranes still suffer from low conductivity and inadequate long-term stability. Herein, we develop a sulfonated polyphenylene sulfide (sPPS) and NiFe-layered double hydroxide (LDH) composite membrane featuring a hydrogen bond network for highly efficient alkaline water electrolysis. This sPPS/LDH composite membrane is fabricated by a sulfonation-casting strategy. The resulting composite membrane exhibits excellent thermal stability, mechanical strength, hydrophilicity, high bubble point pressure, and low area resistance compared to the widely used commercial ZIRFON 500 composite membranes. Molecular dynamics simulations further reveal that more hydrogen bonds were formed due to the presence of LDH, accelerating the ion transport. When applied in an alkaline water electrolyzer, the optimized sPPS/LDH membrane enabled a current density of 936 mA cm −2 at 1.9 V in 30 wt.% KOH at 80°C and maintained stable operation for over 500 h at 500 mA cm −2 . This work sheds light on the way to form conductive and stable membranes through forming a hydrogen bond network within the composite membranes.
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DOI
PubMed
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2026
·
IF 3.6
Xinquan Zhao,Shisheng Li,Xinshu Zhang,Zhi Gao,Yi Du,Wanying Lei
Exploring efficient, stable, and earth-abundant electrocatalysts toward the oxygen evolution reaction (OER) is a central theme for realizing industrial application of water splitting. In this study, a 1D@2D heterostructure of Co 9 S 8 -Ni 3 S 2 @CoFe LDH/NF is constructed via hydrothermal and electrodeposition approaches, where ultrathin CoFe LDH nanosheets are interconnected and deposited onto Co 9 S 8 -Ni 3 S 2 nanorod arrays. This 1D@2D microstructure benefits from the exposure of a large number of accessible reactive sites. The strong interaction between the sulfide hybrid and LDH material could modulate the electronic structure of Co 9 S 8 -Ni 3 S 2 @CoFe LDH and generate a high concentration of high-valence metal sites. As a result, the optimal catalyst exhibits superior OER performance with a low overpotential of 189 mV at 10 mA cm −2 , a small Tafel slope of 30.22 mV dec −1 , and good stability in alkaline solution. This work opens up a possibility for obtaining efficient and cost-effective electrocatalysts for clean energy production through water splitting. Graphical Exploring efficient, stable, and earth-abundant electrocatalysts toward the oxygen evolution reaction (OER) is a central theme for realizing industrial applications of water splitting. In this study, a 1D@2D heterostructure of Co 9 S 8 -Ni 3 S 2 @CoFe LDH/NF is constructed via hydrothermal and electrodeposition approaches, where ultrathin CoFe LDH nanosheets are interconnected and deposited onto Co 9 S 8 -Ni 3 S 2 nanorod arrays. This 1D@2D microstructure benefits from the exposure of a large number of accessible reactive sites. The strong interaction between the sulfide hybrid and LDH material could modulate the electronic structure of Co 9 S 8 -Ni 3 S 2 @CoFe LDH and generate a high concentration of high-valence metal sites. As a result, the optimal catalyst exhibits superior OER performance with a low overpotential of 189 mV at 10 mA cm −2 , a small Tafel slope of 30.22 mV dec −1 , and good stability in alkaline solution. This work opens up a possibility for obtaining efficient and cost-effective electrocatalysts for clean energy production through water splitting.
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Rui Wang,Jingjing Lou,Haijie Cao
Peroxymonosulfate(PMS)-based advanced oxidation process has demonstrated significant potential for the remediation of emerging organic contaminants in water. In this study, a sea urchin-like nickel-cobalt double hydroxide (Ni 1 Co 2 -LDH) catalyst was developed and exhibited superior performance and robust durability in PMS activation. The system achieved 99.28% removal of sulfamethoxazole (SMX) within 60 minutes, with a reaction rate constant of 0.1393 min −1 , and also exhibits broad applicability for degrading various representative organic pollutants. Radical quenching experiments and electron paramagnetic resonance spectroscopy identified singlet oxygen ( 1 O 2 ) as the predominant reactive species responsible for SMX degradation, followed by hydroxyl and sulfate radicals. Density functional theory calculations further revealed the critical role of oxygen molecules in both PMS activation via electron transfer and the generation of O •− 2 , a key precursor to 1 O 2 . The singlet oxygen exhibited high selectivity in degrading SMX through 1,2-addition reaction pathways. This study highlights the role of oxygen in PMS activation and provides valuable insights for addressing the challenge of persistent organic pollutants in complex aquatic environments.
研究领域:
环境科学
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化学工程
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高级氧化技术
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水处理
·
催化
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产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Peiyuan Zhang,Tianhua Sun,Wen Liu,Shuwen Liu,Zhangpeng Li,Jinqing Wang
Solvent-free nanofluids (NFs) hold significant potential as lubricant additives, however, their dispersion in non-polar oils is hindered by polar shell components. To address this issue, we designed and synthesized a core-shell structured MgAl-LDH-NFs comprising a flower-like MgAl-LDH core with inherent lubricating properties and a hydrophobic KH560-FL1000 shell. This design achieved improved dispersion stability in liquid paraffin. At an optimal concentration of 0.75 wt%, the MgAl-LDH-NFs significantly reduced the coefficient of friction by 48.5% and wear volume by 88.8%. This enhancement is attributed to the synergistic effect of the shell’s adsorption capacity and the core’s lubricity, which promoted the formation of a robust protective tribofilm. Solvent-free LDH-based nanofluids demonstrate considerable promise for demanding industrial applications for high-load machinery and precision manufacturing.
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DOI
高影响因子
Catalysis Science & Technology
·
2019
·Vol. 9
·期 20
·5736-5744
·
IF 5.726
Weiyang Jin,Fang Liu,Xiaoliang Guo,Jun Zhang,Lekai Zheng,Yongchuan Hu,Jing Mao,Hui Liu,Yanming Xue,Chengchun Tang
The exploration of high-performance, cost-effective, and stable electrocatalysts for the oxygen evolution reaction (OER) is crucial for future energy storage and conversion technologies. Cobalt-based hydroxides and oxides have been considered as ideal OER electrocatalysts and have been intensively studied; however, their catalytic activity is still unsatisfactory. It is known that the interfacial electron and structure engineering of composite electrocatalysts often results in synergistically enhanced catalytic performance. Herein, a self-supported binary heterogeneous catalyst composed of CoFe LDH/Co0.85Se nanosheet arrays vertically grown on carbon cloth has been reported. The heterostructure electrocatalyst exhibits excellent activity for the OER in alkaline electrolyte, requiring an overpotential of only 241 mV at a current density of 10 mA cm−2 with a small Tafel slope of 48 mV dec−1. These performances are significantly better than those of the bare CoFe LDH and Co0.85Se catalysts. Moreover, the composite electrodes exhibit outstanding durability within 40 h of testing. Our further electrochemical results show that the excellent activities of the heterostructure electrodes should be ascribed to the interfacial coupling effect, increased number of activity sites, accelerated electron transfer, and strong structural stability. This work paves an interesting route for boosting the OER performance of oxide-based electrocatalysts by the regulation of electronic structure through introducing non oxide electrocatalysts for various applications.
研究领域:
材料科学
·
电化学
·
能源转换
·
纳米材料
·
催化化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Quan Zhou,Xingjian Dai,Xinfang Zhang,Xiaoying Liu,Jinsong Rao,Yuxin Zhang,Yi Hou
The harsh marine environment demands enhanced corrosion resistance and compatibility of wave-absorbing materials for ship platforms. Urgently required are wave-absorbing composites with both efficient performance and corrosion resistance. In this work, a core–shell composite NiCoFe LDH@SiC nw was specifically designed and synthesized using a one-step hydrothermal in-situ growth method. Through precise tuning of the LDH content on the composite surface, combined with the principle of impedance matching, the dielectric loss is kept within a moderate range. The effective absorption bandwidth (EAB) of LDH 2 @SiC nw at a thickness of 2.47 mm is as high as 6.19 GHz when the filling ratio is only 3 %. Because the synergistic effect of the porous LDH shell and the core–shell heterostructure to enhance the dielectric loss and multiple scattering absorption of microwave in the composite. Significantly, the LDH 2 @SiC nw anti-corrosion coating exhibits exceptional long-term corrosion resistance owing to the barrier effect provided by SiC nw and the Cl - inhibition of LDH, the |Z| 0.01Hz remains at 7.8 × 10 9 Ω·cm 2 even after 30 days of immersion in 3.5 wt% NaCl solution. Hence, the LDH@SiC nw composites developed in this study hold significant potential in advancing the progress of functionalized MA materials with enhanced corrosion resistance.
研究领域:
材料科学
·
电磁学
·
腐蚀与防护
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Mengyuan Huang,Chengcheng Dai,Zhanling Liu,Renyu Zhang,Yuchuan Zhou,Yu Zhong,Jun Wang,Yaping Zhang,Jinchao Li,Xiaofeng Zhu,Yongfa Zhu
The anion exchange membrane water electrolysis (AEMWE) offers a promising prospect for large-scale hydrogen electro-generation. Nevertheless, current AEMWE is still criticized by large overpotentials and poor anti-reverse current capability of the anodic oxygen evolution reaction (OER). The key challenge lies in tailoring adsorption evolution mechanism (AEM) to lattice oxygen mechanism (LOM), thereby circumventing the overpotential limitation caused by inherent scaling relationship. Here, we designed and fabricated a flexible CC-NCNTs-FeNi catalyst by integrating a hydrophobic carbon nanotube network with hydrophilic FeNi layered double hydroxides (LDH) on carbon cloth (CC), with the interface-induced formations of N-doped LDH and Fe/Ni single-atomic sites. Within lab-made AEMWE setups, the catalyst achieves unprecedented OER performance, rendering 100 mA cm −2 with an overpotential of 250 mV for 100 h. Meanwhile, interface-induced atom exchange endows the catalyst with catalytic multi-functionality, enabling a superior robustness for anti-reverse currents in on-off cycling. The in-situ characterizations and theoretical simulations collectively confirm that N-doping modulates Ni 3 d band center and enhances Ni-O covalency, thus favoring a transition from AEM to LOM-dominated pathway for OER.
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DOI
高影响因子
危险品化学品经营许可证（带存储）