Journal of Materials Chemistry C
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2026
·
IF 5.1
Ping Chen,Xiao-Ping Zhou
Room temperature liquid metals, such as galinstan, have emerged as promising candidates for stretchable and deformable electronics due to their superior fluidity and electrical conductivity. While incorporating metallic fillers can impart magnetism, the interfacial alloying reaction between galinstan and metals often compromises the stability and properties of the resulting composites. In this study, an in situ chemical reduction plating method is proposed to modify nickel (Ni) particles at room temperature. By depositing a tin (Sn) shell onto the Ni surface, Ni@Sn core–shell nanoparticles are synthesized and subsequently dispersed into a liquid metal (LM) to form liquid metal-based Ni@Sn magnetic suspensions (LMNSs). First principles calculations of the interfacial binding energy and electron localization function (ELF) elucidate the interfacial stability and bonding mechanism within the Ni@Sn structure. The Sn shell effectively shields the Ni core from corrosion by the liquid metal matrix. Flexible circuits fabricated from the LMNS composite exhibit outstanding electromechanical performance, including a high gauge factor (GF = 9.06 at 200% strain) and excellent stretchability (up to 200%). Furthermore, the LMNS demonstrates significant potential for applications in supercooled soft intelligent sensing, patterning, and magnetic manipulation. This work provides a facile strategy for the development of magnetic liquid metals with appealing properties and broad application prospects.
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ACS Applied Materials & Interfaces
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2026
·
IF 7.8
Cai Qingmei,Su Shengqi,Zhang Yunsheng,Yang Wenxiu,Zhang Wenhui,Lin Xijie
Ni-rich layered oxides, benefiting from their superior specific capacity, have emerged as pivotal cathode candidates for high-energy-density lithium-ion batteries (LIBs). Nevertheless, these materials suffer from severe intrinsic interfacial and structural degradation under high-voltage operation, which severely compromises their practical electrochemical performance. Herein, we developed a surface-bulk phase differentiated modification strategy integrating CeO 2 coating and Fe 3+ doping, leveraging the divergent diffusion behaviors induced by the different ionic radii of Ce 3+ and Fe 3+ ions. This targeted modification approach effectively mitigated the interfacial degradation and bulk structural deterioration of Ni-rich cathode materials. Specifically, the surface CeO 2 coating inhibited parasitic reactions at the cathode–electrolyte interface, and its rich oxygen vacancies efficiently suppressed lattice oxygen release during long-term cycling. Meanwhile, bulk Fe 3+ doping reduced Li + /Ni 2+ cation mixing, alleviated internal lattice strain, and reinforced the crystal framework. The synergistic effect of CeO 2 coating and Fe 3+ doping endowed the cathode with optimized interfacial integrity and structural durability. Taking LiNi 0.83 Co 0.11 Al 0.06 O 2 as a representative material, the CeO 2 -coated and Fe 3+ -doped cathode demonstrated significantly improved cycling performance at conventional 4.3 V and elevated 4.5/4.6 V. Specifically, after 200 cycles at 1 C within 3.0–4.6 V, the modified cathode retained a capacity retention of 76.9%, which was much higher than the 61.7% retention of the pristine sample. This study highlights the great potential of surface-bulk phase differentiated engineering for stabilizing Ni-rich cathodes, providing a feasible pathway for the development of high-energy-density LIBs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Shiquan Huang,Yizhi Hu,Xiaojing Xu,Qing Liu,Shuwen Yu,Feiyang Hu,Rongbin Zhang,Gang Feng,Chengyi Dai,Runping Ye
Conventional Ni-based catalysts often exhibit limited metal-support interactions (MSI) and limited density of active interfacial sites, which significantly restrict their low-temperature activity for CO 2 methanation. In this study, we report a binary inverse-structured CeO 2 /Ni catalyst synthesized via a facile one-pot sol-gel method. The optimal 10% CeO 2 /Ni catalyst achieved a CO 2 conversion of 85.4 ± 0.5% with 98.8 ± 0.2% CH 4 selectivity at 200 °C under a gas hourly space velocity of 12,000 mL·g cat −1 ·h −1 during 150 h long-term stability test, substantially outperforming the conventional 10% Ni/CeO 2 catalyst. Comprehensive characterizations collectively indicate that the enhanced low-temperature performance arises from synergistic effects induced by the inverse architecture. The MSI facilitates hydrogen spillover from metallic Ni to CeO 2 , while enriched interfacial oxygen vacancies provide abundant active sites for CO 2 adsorption and activation. In-situ diffuse reflectance infrared Fourier transform spectroscopy results further suggest that the inverse structure steers the reaction toward a highly efficient formate-mediated pathway. This work highlights structural inversion as a facile and effective design strategy to reinforce MSI, offering a promising approach for developing high-efficiency low-temperature CO 2 hydrogenation catalysts. Download: Download high-res image (152KB) Download: Download full-size image
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Jiang Tian,Chen Junjie,Lei Ying,Tao Zhilin,Li Jiaxin,Han Wenjing,Cheng Zheng,Zhang Bin,Li Jianying
Ni-rich layered oxide cathodes received considerable research interest due to their high energy density, yet their cycling stability was severely limited by irreversible H2–H3 phase transition-induced lattice strain accumulation and lattice oxygen release, especially at high voltage. Here, we report a coherent twin-phase engineering strategy by doping trace antimony (Sb) to stabilize layered LiNi 0.82 Co 0.12 Mn 0.06 O 2 (NCM) cathodes under deep delithiation. Aberration-corrected STEM reveals Sb-induced coherent twin phases that crystallographically connect layered and locally rocksalt-like domains while maintaining an intact layered oxygen framework. These coherent twin phases act as robust pinning interfaces that suppress irreversible H2–H3–induced c -axis contraction and mitigate anisotropic lattice stress during high-voltage cycling. Meanwhile, time-of-flight secondary ion mass spectrometry and theoretical calculations reveal that strengthened Sb–O bonding raises the oxygen-vacancy formation energy, stabilizing lattice oxygen and suppressing oxygen release, thereby preserving structural integrity and mitigating transition-metal dissolution. Benefiting from these synergistic stabilization effects, 0.75Sb-NCM exhibits a high discharge capacity of 209.61 mAh g –1 at 0.1 C and maintains 85.56% capacity retention after 200 cycles at 1 C within 2.8–4.5 V, significantly outperforming U-NCM (70.22%). This work highlights coherent twin phases as a robust structural pinning architecture for stabilizing Ni-rich layered cathodes at high states of charge.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 30
·40660-40671
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IF 7.8
Jin Zhao,Yao Shunyu,Sun Chang,Zhang Chunqi,Liang Licheng,Liu Yipeng,Yang Qingqing,Liang Fei
The practical deployment of magnesium-based alloys, despite their attractive hydrogen-storage capacity and economical advantage, faces critical barriers in the form of high dehydrogenation temperatures and inadequate sorption kinetics. To overcome these barriers, a two-dimensional layered La x @Ti 3 C 2 -derived catalyst was therefore developed, which exhibits high catalytic activity toward the Mg-4Ni-2Y alloy. The Mg-4Ni-2Y + 10 wt % La 0.2 @Ti 3 C 2 composite not only lowered the onset absorption/desorption temperatures to 23.3 ° C and 265.5 ° C but also enabled the composite to achieve superior sorption kinetics, absorbing 4.80 wt % H 2 in 1 min at 150 ° C and releasing 5.16 wt % H 2 in 4 min at 350 ° C. Furthermore, the apparent activation energy (E a ) was substantially reduced to 85.22 ± 2.38 kJ/mol for the composite, thereby decreasing the dehydrogenation temperature and accelerating the kinetics. Systematic analysis suggests that the catalytic enhancement is primarily associated with highly dispersed Ti 0 species, which are proposed to act as the primary active sites for hydrogen dissociation and recombination. La decoration is suggested to serve as an electronic promoter, modulating the electronic structure of Ti sites and stabilizing the interfacial environment. This synergistic Ti-La interaction facilitates hydrogen activation and interfacial transfer without altering the intrinsic Mg/MgH 2 thermodynamics, thereby significantly accelerating hydrogen sorption kinetics.
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Science Advances
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2025
·Vol. 11
·期 24
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IF 12.5
Jian-Yu Zou,Fang-Li Xing,Quan-Xing Zi,Hai-Wu Du,Meiwan Chen,Wei Shu
α-Chiral phosphorus compounds have broad applications as organic catalysts or ligands in organic chemistry and related areas. Herein, we disclose a Ni-catalyzed enantioselective cross-hydrodimerization of alkenyl phosphine sulfides with unactivated alkenes to access α-chiral phosphine sulfides, representing the first example of asymmetric hydrodimerization of electron-deficient alkenes with electron-rich alkenes. Key to success is the precise recognition between electron-deficient alkenes and electron-rich alkenes and streamlined alkyl-alkyl bond forming with the control of chemo-, regio-, and enantioselectivity. This strategy requires alkenes as sole precursors for asymmetric alkyl-alkyl cross-coupling, circumventing the use of stoichiometric amounts of alkyl electrophiles or alkyl nucleophiles as coupling partners. The mild conditions tolerate a wide range of functional groups, providing direct access to α-chiral phosphines through a carbon-carbon bond-forming process without prefunctionalized coupling precursors.
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Catalysis Science & Technology
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2025
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IF 4.2
Yifan Zhang,Jiaying Liu,Shiwei Wang,Zhihao Yu,Haojian Zhang,Dong Wang,Lin Zhu,Chunzheng Wu,Hongbo Yu
Modifying noble metal catalysts with transition metal oxides (MO x ) can markedly enhance catalytic performance through synergistic effects, yet precise spatial colocalization of active metal and promoter phases remains challenging. Here, we report the synthesis of KIT-6 supported Pd-MO x (M = Fe, Co, Ni) hybrid nanostructures via in situ transformation of bimetallic PdM nanoparticles under controlled thermal conditions. The resulting Pd-MO x /KIT-6 catalysts displayed superior activity and selectivity in the selective hydrogenation of acetophenone to 1-phenylethanol compared with monometallic Pd/KIT-6. Among them, Pd-CoO x /KIT-6 (Pd/Co=1:1) achieved the highest performance, with 99.7% acetophenone conversion and 98.2% selectivity, and demonstrated broad applicability for hydrogenating diverse ketones. Structural and kinetic studies revealed that interfacial Pd-CoO x sites play a pivotal role: Pd domains efficiently dissociate H 2 , while CoO x species enhance acetophenone adsorption. This synergistic interface-driven mechanism provides a general and costeffective strategy for the selective hydrogenation of multifunctional substrates.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Tengyu Zhang,Meijia Liu,Fangyi Wu,Yuanhang Wang,Yujia Ma,Lu Wang,Fangong Kong
Magnesium hydride (MgH 2 ) is regarded as a promising solid-state hydrogen storage material with high capacity and abundant resources, while its large-scale application is limited because of the inherent thermodynamic and kinetic issues. In this study, a nitrogen-doped carbon-coated Ni/MnO nanosphere catalyst (Ni/MnO@NC) was synthesized to enhance the hydrogen storage performance of MgH 2 by lowering the operating temperature and improving kinetic properties. Incorporation of 10 wt% Ni/MnO@NC lowered the onset dehydrogenation temperature of MgH 2 to 225.2 ℃ and reduced the dehydrogenation activation energy to 97.68 kJ/mol. At temperatures as low as 50 ℃, MgH 2 -Ni/MnO@NC composite achieved 2.92 wt% hydrogen absorption within 30 min. Moreover, the composite retains 97.4 % of its initial capacity after 30 cycles. Mechanistic analysis indicates that the superior hydrogen storage performance arises from synergistic catalysis among intermediate and derived phases, including the hydrogen pump effect of Mg 2 Ni/Mg 2 NiH 4 , enhancement of electron transfer by multivalent Mn, and suppression of MgH 2 particle aggregation and growth by nitrogen-doped carbon. These findings put forward a promising strategy to advance the practical application of MgH 2 in hydrogen storage systems.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Zhang Wen,Zhang Ning,Gao Jianyang,Liu Fusheng,Zhang Yang,Xu Guang-Rui,Wang Lei
Recently, zinc-air batteries have been of great interest due to their high theoretical specific energy that plays an important role in renewable energy conversion, while the sluggish kinetics of their half-reactions of oxygen reduction and oxygen evolution (ORR/OER) limit their widespread applications. Herein, we report the synthesis of self-assembly Ni@PdNiO x seashell-like nanostructures (Ni@PdNiO x NSs) with low Pd content through a novel one-step wet chemical method for the first time. The optimized self-assembly Ni@PdNiO x NSs with a thickness of 2.06 nm are connected self-assembled to form a network structure, which exhibits a large surface area and unprecedented ORR/OER with a positive half-wave potential of 0.892 V vs. RHE and an overpotential of 230 mV at 10 mA/cm 2 in alkaline solution, outperforming most of the PdNi catalysts. When the self-assembly Ni@PdNiO x NSs are applied as electrodes for zinc-air batteries, they deliver a high power density of 88.9 mW/cm 2 and an impressive energy density of 714 mA·h·g −1 . This work opens up a new strategy for generating superior oxygen electrocatalysis and provides new insight into the correlation of low Pd content and Ni in the improvement of alkaline oxygen electrocatalysis.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Kaijin Guo,Mingliang Li,Yahao Liu,Zhihui Zhu,Mengfei Wang,Xuewen Tang,Guangming Zhu
In the oxygen evolution reaction (OER), the lattice oxygen mechanism (LOM) has the potential to exceed the theoretical overpotential limit of approximately 370 mV associated with the traditional adsorbate evolution mechanism (AEM). Therefore, it is crucial to promote lattice oxygen involvement in the OER through careful design. We prepared a self-supported NiFeV hydroxide pre-catalyst electrode using a one-step electrochemical deposition method. Most of the V in the pre-catalyst dissolved during electrochemical activation, as confirmed by various ex situ and in situ characterization studies. The actual catalyst comprised V-doped FeOOH and NiOOH. Notably, significant oxygen vacancies were generated due to V element dissolution and leaching. The reconstructed catalyst can facilitate oxygen production via both the AEM and LOM, supported by theoretical calculations and experimental validation. It operates steadily for 750 hours at a current density of 50 mA cm−2, requiring only 200 mV and 253 mV overpotentials to achieve current densities of 10 mA cm−2 and 100 mA cm−2, respectively. This work elucidates the electrochemical reconstruction of V-containing hydroxides in alkaline media under anodic conditions while providing valuable insights into developing high-performance catalysts that involve the LOM.
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WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 8
·480
·
IF 3
Tao Nuoxi,Yu Hulei,Pan Zhidong,Wang Yanmin,Lu Youjun
A ternary nanocomposite integrating disodium ethylenediaminetetraacetate (EDTA), cetyltrimethylammonium bromide (CTAB) and illite/smectite (I/S) clay nanoflakes (denoted as C-I/S-E) was prepared by a mechanochemical route in a high energy–density stirred bead mill. The characterizations confirm the exfoliation of clay into nanoflakes and effective EDTA functionalization. The adsorption behavior of Ni (II) ions in aqueous solution was evaluated with respect to the effects of adsorbent dosage, contact time, and initial Ni (II) concentration. Meanwhile, the adsorption mechanism in an atomic scale was analyzed via the first-principles density functional theory (DFT) calculations. The integrated experimental and simulation findings indicate that the enhanced adsorption performance of the EDTA-modified I/S clay nanoflakes is attributed to a synergistic interplay of physical adsorption by the clay substrate and chemical chelation by the EDTA functional groups. The nanocomposite C-I/S-E shows a promising potential as an efficient adsorbent for removal of heavy metal ions from wastewater.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yufeng Huang,Linghui Tang,Shiwen He,Yue Wang,Yan Dong
We present an enzyme-free glucose sensor for on-site fruit testing based on a Ni-doped triblock hydrogel that couples ionic-channel conduction with hydrogen-bond–reinforced mechanics. In the hydrogel, the NiCl 2 -hydrogel (Ni-HG) pair generates continuous ion pathways that enhance charge transport, while phytic acid establishes multi-point hydrogen bonding and moisture retention, yielding a robust, highly adhesive network that conforms to diverse electrode formats. Within this hydrated, ion-permeable scaffold, Ni 2 + /Ni 3+ (Ni(OH) 2 /NiOOH) functions as a built-in redox mediator, enabling selective, enzyme-free oxidation of glucose in alkaline media. Under optimized conditions, the Ni-HG/GCE sensor delivers a broad linear range of 0.05–6.6 mM, limit detection of 10 μM, with high selectivity against common electroactive species, good repeatability, and reliable performance in real fruit samples. The hydrogel architecture supports rapid amperometric response and stable operation, while its strong adhesion and mechanical compliance facilitate integration with screen-printed electrodes for low-cost, disposable use. These attributes establish a practical platform for fast, sensitive, and selective glucose quantification in fresh produce and point-of-use food monitoring.
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