JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2017
·Vol. 21
·期 12
·3611-3618
·
IF 2.316
Luo Rongjie,Lu Yang,Hou Xiaoyi,Yu Qiuhong,Peng Tao,Yan Hailong,Liu Xianming,Kim Jang-Kyo,Luo Yongsong
Composites consisting of selenium/carbon (Se/C) encapsulated by ultra-thin Ni(OH) 2 nanosheet shell are synthesized as cathode for high-performance lithium-selenium batteries. The Se/C-Ni(OH) 2 cathode presents excellent discharge capacities and cyclic stability with almost 100% Coulombic efficiencies. It delivers a reversible capacity of 323 mAh g −1 after 300 cycles with almost negligible capacity degradation after 100 cycles at a high current density of 1 C. Several unique functional features of the composite electrodes are responsible for the findings. The uniform mixture of Se and carbon black in the composite promotes the utilization of the active materials with enhanced ion/electron transfer. The Ni(OH) 2 nanosheets maintain the integrity of Se/C core during cycles, reducing the shuttling effect reactions of polyselenides. These results demonstrate that the Se/C-Ni(OH) 2 composite cathode is a promising candidate for application in rechargeable lithium-selenium batteries.
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高影响因子
Sustainable Materials and Technologies
·
2021
·
IF 7.053
Pengyi Lu,Xiao Yan,Xinzhong Wang,Feng Hou,Ji Liang
Low-cost transition metal silicates are regarded as promising high-performance anode materials for cation storage due to their high capacitance. However, the intrinsically low conductivity of transition metal silicates should be properly addressed to fully utilize their high cation storage properties, which remains a challenge. Herein, we report a three-dimensional (3D) hybrid film featured with nickel silicate nanosheets combined with carbon nanotubes (Ni-silicate/CNTs) prepared by a one-step hydrothermal strategy. In the highly flexible film, bunches of ultrathin Ni-silicate nanosheets are uniformly anchored on the CNTs, which form a 3D interconnected network with open porosity. This Ni-silicate/CNT material shows excellent first cycle coulombic efficiency, good rate performance, and outstanding cycle performance (85.3% capacity retention after 1000 cycles at 3 A g −1 ) when used as binder-free electrodes for LIBs . In addition, it can also deliver a high electrochemistry performance in SIBs , and the average reversible specific capacity is 643.7 mAh g −1 at 0.05 A g −1 . Our results suggest the great potential of such Ni-silicate/CNT hybrid films as flexible LIB/SIB electrodes for practical applications.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zeng Fanen,Xu Bing,Jing Chenglong,He Xiaodong,Li Chunyang,Li Guojun
High-entropy oxides (HEOs) have attracted considerable attention for energy storage applications because of their multi-principal synergistic effects and excellent structural stability. In this study, polyethylene glycol (PEG) was used as a surfactant to synthesize (CrMnFeCoNi) 3 O 4 HEOs by tuning the molar ratio of PEG to metal cations ( P / M ). The results show that PEG plays three roles during synthesis, serving simultaneously as a coordinating dispersant, a structure-directing agent, and an in situ porogen. The optimized HEO ( P / M = 4/5) exhibits a uniform nanoparticle morphology and a well-developed pore architecture, delivering a specific capacitance of 557.6 F g –1 . Kinetic analysis further indicates that its pseudocapacitive behavior is from a cooperative effect involving both capacitive-controlled and diffusion-dominated mechanisms. The assembled asymmetric supercapacitor device achieves an energy density of 64.2 Wh kg –1 at a power density of 375.3 W kg –1 and retains 81.3% of its capacitance after 10000 charge/discharge cycles. These outstanding electrochemical properties highlight the promise of PEG template (CrMnFeCoNi) 3 O 4 HEOs for advanced energy storage applications. Graphical abstract
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POLYHEDRON
·
2022
·
IF 2.975
Yan-Ling Deng,Wei Li,Chun-Yang Pan
Two new metal hybrid borates , Na[Ni(py) 2 ] 2 ·[(C 4 H 2 O 6 ) 2 B]·H 2 O (py = pyridine) ( 1 ) and [Cu(H 2 O) 2 (1-EI) 4 ]·[B 5 O 6 (OH) 4 ] 2 ·H 2 O (1-EI = 1-ethylimidazole) ( 2 ), have been successfully synthesized. 1 features an interesting structure based on mixed borate-tartrate motifs. Two tartrate anions are condensed with one BO 4 to form the hybrid anionic group [(C 4 H 2 O 6 ) 2 B] 5− . The structure of 2 is composed of [B 5 O 6 (OH) 4 ] − clusters and [Cu(H 2 O) 2 (1-EI) 4 ] 2+ complexes, which exhibits hydrogen-bonded network formed by [B 5 O 6 (OH) 4 ] − clusters. These compounds are further confirmed by FTIR, PXRD and UV–vis. In addition, the catalyst prepared from 2 shows excellent electrocatalytic oxygen reduction reaction (ORR) activity.
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高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xiaoyuan Qin,Chang Zhou,Zerui Su,Jianbing Huang,Jian Zhang
The selective hydrogenolysis of biomass-derived furfuryl alcohol (FOL) to 1,5-pentanediol (1,5-PeD) is a crucial yet challenging transformation in biorefinery. Herein, a NiPr-CTS-F catalyst synthesized via a formic acid-assisted carbothermal shock (CTS) strategy, which features an ultrafast, energy-efficient, and low-pollution process with minimal carbon residue, is reported for this reaction. Comprehensive characterization confirms the successful construction of an intimate Ni–PrO x interface accompanied by oxygen vacancies. This structure creates synergistic ternary active centers, integrating metallic Ni sites for H 2 activation, interfacial oxygen vacancies for adsorbing the O atom of C–O–C in the furan ring, and basic sites for anchoring the hydroxyl group. Mechanistic studies reveal that this synergistic site steers the key intermediate, tetrahydrofurfuryl alcohol (THFA), into a bidentate adsorption configuration that selectively stretches and polarizes the C 2 –O 1 bond, thereby facilitating its selective cleavage. Furthermore, the isopropanol (IPA) solvent participates via a Meerwein–Ponndorf–Verley (MPV) mechanism, supplying hydride ions (H ⁻ ) and dynamically regulating the surface hydrogen concentration to ensure high selectivity while suppressing over-hydrogenolysis. Under optimal conditions (180 °C, 3 MPa of H 2 , 24 h), a high 1,5-PeD yield of 72.1% is achieved with FOL conversion of 99.4%. The catalyst also exhibits excellent stability over five consecutive cycles with negligible activity loss. This work not only provides an efficient catalyst for 1,5-PeD synthesis but also offers molecular-level insights into selective C–O bond cleavage, demonstrating how rationally designed interfacial sites and solvent participation can cooperatively govern reaction pathways. These findings present a new paradigm for designing multifunctional catalytic interfaces for biomass valorization.
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高影响因子
BIOMASS & BIOENERGY
·
2026
·
IF 7
Yuhao Shi,Weiping Tang,Fei Ge,Xiaohui Yang,Minghao Zhou
FJH prepared carbon-coated Co-Ni-Al LDH catalysts and suppressed metal sintering. • Co 1 Ni 2 Al-850 catalyst afforded 100% vanillin conversion and 94.3% MCH yield in isopropanol solvent. • Ni species activated isopropanol to produce active hydrogen, while oxophilic Co promoted the cleavage of C-O bonds. • The Co 1 Ni 2 Al-850 catalyst effectively converted various lignin model compounds under mild conditions. Hydrodeoxygenation (HDO) is a key process for upgrading lignin derived bio-oil to high-quality fuels and chemicals. In this study, Co x Ni y Al-T catalysts with varying Co/Ni molar ratios and calcination temperatures were fabricated through flash Joule heating assisted carbon coating, with layered double hydroxides (LDHs) adopted as precursors. These catalysts were used for the hydrodeoxygenation of vanillin to 4-methylcyclohexanol (MCH). Under the optimized reaction conditions (180 °C, 2.5 h, 1 MPa N 2 ) with isopropanol serving as both hydrogen donor and solvent, the Co 1 Ni 2 Al-850 catalyst achieved nearly 100% vanillin conversion and a 94.3% yield of MCH. Based on various characterization results, Co 1 Ni 2 Al-850 catalysts exhibited suitable specific surface area, pore structure and acid sites. The excellent performance of Co 1 Ni 2 Al-850 catalyst was also attributed to the Co-Ni synergistic effect: Ni species accelerated the activation and dissociation of isopropanol to supply sufficient active hydrogen species for HDO; Co species promoted removal of methoxy groups in MMP. In addition, the presence of Al enhanced the structural stability. Based on the product distribution and characterization results, the possible reaction mechanism of the catalytic system was proposed. This study provides a new way for the development of efficient non noble metal catalysts for the hydrodeoxygenation system of biomass derivatives.
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Chemosensors
·
2026
·Vol. 14
·期 7
·166
·
IF 4.4
Peng Chen,Xin Zhang,Jiacheng Liu,Xu Li,Min Chen,Qingji Wang
Hydrogen is a clean energy carrier essential for carbon neutrality, but its invisible and odorless nature poses significant safety risks, particularly during low-concentration leaks. Although metal oxide semiconductor (MOS) sensors offer fast response and high sensitivity, their ability to detect ppb-level hydrogen remains limited. In this work, we present a high-performance hydrogen gas sensor based on nickel-doped tin dioxide (Ni-SnO2) nanorods, directly grown on planar electrodes via aerosol-assisted chemical vapor deposition (AACVD). By optimizing the Ni doping ratio and nanorod morphology, the 3 wt% Ni-SnO2sensor achieves a low detection limit of 100 ppb for H2, demonstrating promising potential for low-concentration hydrogen detection. Moreover, the sensor exhibits outstanding selectivity, with a response to 100 ppm H2nearly six times higher than that to the next most responsive interfering gas (NH3). Comprehensive XPS and Raman analyses reveal that Ni doping introduces abundant oxygen vacancies and lattice defects, which are the key origins of the enhanced sensing performance. Notably, the 3 wt% Ni-SnO2sensor strikes an optimal balance between lattice defects and structural stability, delivering both high sensitivity and good moisture resistance with minimal baseline drift over weeks of operation. This work establishes a facile and scalable AACVD strategy for engineering defect-rich SnO2nanostructures, enabling sub-ppm hydrogen detection with high selectivity and long-term stability—addressing a critical gap in practical hydrogen safety monitoring.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 34
·25602-25621
·
IF 4.4
Li Han,Wang Baichen,Lu Shaowei,Li Wei
Researchers have developed a novel anticorrosion particle, denoted as CPAM@Co/Ni MOF@BTA (CMB). In this system, benzotriazole (BTA) acts as a corrosion inhibitor and is incorporated into the Co/Ni MOF framework through an in-situ host–guest nano-confinement strategy. Meanwhile, cationic polyacrylamide (CPAM) serves as cladding layer and is electrostatically assembled onto the surface of Co/Ni MOF@BTA. The composite coating was prepared by dispersing these particles into an epoxy resin matrix. In immersion tests, the coating was found to effectively enhance the corrosion resistance of Q235 steel in a sodium chloride medium, with impedance remaining as high as 2.24 × 10 5 Ω·cm 2 after 45 days of exposure. In polarization measurements, a corrosion current density as low as 5.294 × 10 –10 A/cm 2 was observed, indicating a pronounced anodic inhibition effect. In scratch tests, a distinct self-healing capability was also demonstrated. These results confirm that the incorporation of CMB particles significantly improves the passive corrosion resistance of epoxy coatings and imparts self-healing properties.
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ADVANCED POWDER TECHNOLOGY
·
2026
·Vol. 37
·期 9
·105408
·
IF 4.5
Xiaoying Huang,Mingliang Xiang,Xiao Jin,Min Nie,Wei Xu,Rie Umetsu,Qing Yang,Yanan Chen,Jun-Qiang Wang,Yan Zhang
With the rapid advancement of power electronics toward high-frequency and miniaturization, there is an urgent demand for soft magnetic composites (SMCs) that possess both high permeability and low core loss. Herein, a novel Cr-O&(Ni,Zn)Fe 2 O 4 synergistic hybrid insulation was synthesized on FeSiBCCr amorphous powders via sequential hydrothermal and chemical co-precipitation methods. The oxygen partial pressure during annealing was optimized using 0.8 wt.% carbon powder to enhance the crystallinity and magnetic properties of the ferrite insulating coating. The resulting SMCs exhibited a saturation magnetization ( M s ) of 140.0 emu/g and an effective permeability ( μ e ) of 35.03. Notably, the core loss P 50mT/1MHz was reduced to 2143.10 mW/cm 3 , which is 50.72% lower than that of the core sample prepared by using raw powder without ferrite insulating coating. This synergistic hybrid insulation effectively suppresses inter-particle eddy currents and reduces domain wall pinning, offering a high-performance solution for high-frequency power electronics.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Changxin Yuan,Jinlong Li,Yan Zhuang,Dongxuan Guo,Shuang Meng,Dantong Zhang,Xue Yang,Guozhe Sui
Photocatalytic hydrogen evolution represents a crucial pathway for sustainable energy conversion, where constructing efficient heterojunctions and employing strategic doping are key to enhancing performance. Herein, a Ni-doped CdZnS/Ti 3 C 2 T x Schottky heterojunction was constructed via a hydrothermal method to enhance photocatalytic hydrogen evolution. Ni doping introduces sulfur vacancies that improve charge conductivity, while coupling with Ti 3 C 2 T x MXene forms a Schottky junction that directs interfacial electron transfer and suppresses recombination. Density functional theory (DFT) calculations confirm that sulfur vacancies and the Schottky barrier act synergistically to optimize charge dynamics, and that Ti 3 C 2 T x shifts the d-band center of Ni toward the Fermi level of the sample, promoting hydrogen desorption process. The optimized Ni-CdZnS/Ti 3 C 2 T x composite exhibits a high visible-light driven hydrogen evolution rate of 13.67 mmol g −1 h −1 — 3.73-folds that of pristine CdZnS — along with an apparent quantum efficiency (AQY) of 20.15% at 365 nm, while maintaining favorable stability. This work demonstrates an effective strategy integrating defect engineering and Schottky junction design for efficient solar hydrogen evolution.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Xuehan Gao,Weifeng Zhi,Dongmei Huang,Wenyu Pan,Xinhang Ma,Liyi Pan,Zequan Li,Shuangliang Zhao
Hydrogenated nitrile butadiene rubber (HNBR) is a crucial material for high-performance sealing applications; however, conventional solution hydrogenation is often limited by high noble-metal consumption and the challenges in simultaneously achieving high activity, selectivity and stability. Herein, a synergistic design strategy integrating mass transfer enhancement, bimetallic electronic synergy, and support interface stabilization is proposed for efficient NBR hydrogenation. A Pd-Ni bimetallic-doped TiO 2 -Al 2 O 3 porous composite catalyst was synthesized through a sol–gel method, in which the pore size distribution was tuned to 15–18 nm by using an F127 template to facilitate macromolecular diffusion. Partial substitution of Pd with Ni modulates the electronic structure of Pd sites, promoting H 2 dissociation and selective C=C bond hydrogenation, while the TiO 2 -Al 2 O 3 composite support provides Lewis acid–base sites and oxygen vacancies that enhance metal dispersion and catalyst stability. The optimized Pd–1Ni catalyst achieves a hydrogenation degree of 92% at 120 °C and 4 MPa, and retains over 80% of its activity after five consecutive cycles. This work demonstrates an effective strategy for balancing catalytic activity, noble-metal utilization, and operational stability in heterogeneous NBR hydrogenation systems, providing a practical reference for catalyst design in polymer hydrogenation processes.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Haiming Gu,Minyu Yu,Peng Xu,Shanhui Zhao,Siwen Zhang,Yadong Yu
Integrated CO 2 capture and dry reforming of CH 4 (ICC-DRM) is an effective approach to mitigate CO 2 emissions while producing syngas, with dual-functional material (DFM) as the core. CaO-Ni/CeO 2 DFM shows great potential for ICC-DRM application, but the impact of synthesis methods on its' structure and performance remains unclear. In this study, CaO-Ni/CeO 2 was prepared via solution combustion (SC), wet ball-milling (WM), and co-precipitation (CP), characterized by XRD, BET, SEM-EDS TEM, TGA and H 2 -TPR. The ICC-DRM performance was evaluated in a fixed-bed reactor. The SC sample exhibited the most favorable surface structure, with well-developed porosity and uniform elemental distribution, achieving the highest CO 2 capture capacity (152 wt% at 650 °C), achieving the highest CO 2 capture capacity (152 wt% at 650 °C) The WM sample showed intermediate properties, while the CP sample had a dense morphology and elemental aggregation leading to poor performance. Elevated temperature (675–700 °C) promoted WM/CP reactivity (still lower than SC at 650 °C), but caused severe performance degradation and increasing carbon deposition (21% for WM and 37% for CP after 10 cycles), while the SC sample maintained stability. Further optimization confirmed 5% Ni as the optimal loading for SC-DFM, achieving 95%–97% CH 4 conversion and a stable H 2 /CO ratio (∼1) at 650 °C. This study clarifies the regulatory effect of synthesis methods on DFM structure-reactivity relationship, identifying SC as the optimal strategy for high-performance ICC-DRM materials.
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