Journal of the Taiwan Institute of Chemical Engineers
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2026
·
IF 6.3
Chen Feng,Haoxi Jiang,Hao Gong,Lingtao Wang,Guochao Yang
Background CO 2 methanation plays a critical role in reducing carbon emissions. The development of Ni-based catalysts with simple synthesis processes and low costs for low-temperature methanation demonstrates promising industrial application prospects, yet it also faces significant challenges. Ni-based catalysts generally require higher metal loadings, which in turn makes it difficult to achieve high metal dispersion, severely limiting their low-temperature catalytic activity. Methods In this study, a simple co-impregnation method was employed in combination with a dual-strategy approach: hydrogen peroxide pretreatment to increase the concentration of silanol groups on the SBA-15 silica support surface and the assistance of ethylene glycol (EG) during the impregnation process. Significant findings The significant finding of this work lies in the demonstrated synergy of a dual strategies to stabilize highly dispersed Ni catalysts for CO 2 methanation. While high dispersion and good low-temperature activity have been reported elsewhere, this study specifically shows that combining (1) ethylene glycol-assisted impregnation to improve initial dispersion with (2) the utilization of SBA-15 silanol groups as anchoring sites effectively mitigates sintering. This combined approach resulted in a catalyst achieving 77% CO 2 conversion and 100% CH 4 selectivity at 250 °C, with characterization confirming the enhanced stability afforded by the synergy.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Jiale Wang,Yan Nie,Chang Miao,Yi Tan,Minyue Wen,Wei Xiao
To optimize the electrochemical performance of Ni-rich cathode materials, the 0.005 mol of Mg 2+ and 0.005 mol of Ti 4+ co -doping LiNi 0.83 Co 0.11 Mn 0.06 O 2 composite powders, labeled as NCM-11, are successfully prepared by being calcinated at 750 °C for 15 h following by an appropriate post-treatment, which are confirmed by XRD, EDS and XPS. The results suggest that NCM-11 presents a well-ordered layered structure with a low Li + /Ni 2+ mixing degree of 1.46% and Mg 2+ and Ti 4+ ions are uniformly distributed across the lattice. The cell assembled with NCM-11 can deliver an initial discharge specific capacity of 194.2 mAh g −1 and retain a discharge specific capacity of 163.0 mAh g −1 after 100cycles at 2.0 C at 25 °C. Furthermore, it still maintains a discharge specific capacity of 166.7 mAh g −1 after 100cycles at 2.0 C at 60 °C. More importantly, it also exhibits a higher discharge specific capacity of about 150.7 mAh g −1 even at 5.0 C . Those superior electrochemical performance can be mainly ascribed to the synergistic effect of Mg 2+ and Ti 4+ co -doping, in which Mg 2+ ions can occupy the Li + layer to act as pillar ions and Ti 4+ ions can occupy the transition metal ions layer to enlarge the interplane spacing. Thus, the heterovalent cations co -doping strategy can be considered as a simple and practical method to improve the electrochemical performance of Ni-rich layered cathode materials for lithium-ion batteries.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Long Chen,Gen Chen,Zuxin Wen,Dan Wu,Zuoyu Qin,Ning Zhang,Xiaohe Liu,Renzhi Ma
Undesirable dendrite growth and infinite volume expansion are the major barriers to the potential application for next-generation safe Li metal batteries. To solve these problems, we herein report electroplating CuO nanoneedle arrays on Ni foam (NCNF) as 3D porous framework for Li metal batteries. The influence of different morphologies of CuO on guiding Li plating/stripping behavior has been investigated. The homogenous deposition of Li can be attributed to the interspace between the CuO nanoneedles, which is remarkably superior over granular CuO on Ni foam (GCNF) at high areal capacity. The hierarchical skeleton can not only decrease local current inhomogeneity but also alleviate the volume change of Li. The NCNF electrode delivers a higher Coulombic efficiency of Li deposition comparing with the bare Ni foam and GCNF. Furthermore, enhanced cycling stability with small overpotential can be achieved in symmetric cells. In a Li/LiFePO 4 full cell, the excellent cycling performance also proves the superiority of NCNF@Li composite electrode.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2018
·
IF 3.779
Na Ren,Hongfang Jiu,LiYa Jiang,Qing Zhang,Shaokang Yu,Yuying Gao,Zhonghao Gao,Lixin Zhang
Hierarchical porous ZnMn 2 O 4 rugby-balls on Ni foam were first synthesized via a hydrothermal method and then an annealing process . The ZnMn 2 O 4 rugby-balls were composed of interconnected nanosheets of about 25 nm. The growth mechanism is also proposed. In addition, the unique structure of hierarchical porous ZnMn 2 O 4 rugby-balls on Ni foam exhibited superior electrochemical performances including high specific capacity, long cyclic stability and good rate capability. At a constant current density of 100 mA g −1 , the initial discharge and charge capacities were 1584 mAh g −1 and 1114 mAh g −1 respectively, after 100 cycles, the reversible capacity could remain 614 mAh g −1 . These results demonstrate great potential of hierarchical porous ZnMn 2 O 4 rugby-balls on Ni foam in advanced LIBs . Furthermore, this method may provide a novel route for the synthesis of a series of hierarchical porous ternary spinel oxides rugby-balls.
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JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Jianling Huang,Hui Wang,Liuzhang Ouyang,Jiangwen Liu,Min Zhu
MgNi-based alloys have high electrochemical capacity as anode of nickel-metal hydride (Ni/MH) battery (≥500 mAh g −1 ). However the capacity decay seriously in charge-discharge cycling, which is previously ascribed to the corrosion of Mg. To solve this problem and reveal the related mechanism, the electrochemcial properties of Mg 0.50 Ni 0.50 , Mg 0.45 Ti 0.05 Ni 0.05 and Mg 0.40 Ti 0.10 Ni 0.50 alloys are studied in combination with their hydrogen storage properties and microstuctural evolution during cycling. This work demonstrates the amorphous phase in milled Mg 0.45 Ti 0.05 Ni 0.50 and Mg 0.40 Ti 0.10 Ni 0.50 alloys has higher resistance to hydrogenation-induced crystallization than milled Mg 0.50 Ni 0.50 alloy. Thus, they show better hydrogen absorption/desorption reversibility and contribute to the reversible electrochemical capacity. Therefore, the cycle performance of the Mg 0.50 Ni 0.50 alloy electrodes shows obvious improvement after partially substituting Mg by Ti. The capacity retention rate increases from 24.0% (Mg 0.50 Ni 0.50 ) to 55.7% (Mg 0.40 Ti 0.10 Ni 0.50 ) after 30 cycles. In addition, the Ti addition results in the formation of TiNi phase, and thus, the alloys show better electrochemical reaction kinetics and their high-rate dischargeability (HRD) is significantly improved. At 300 mA g −1 , the HRD values of Mg 0.50 Ni 0.50 , Mg 0.45 Ti 0.05 Ni 0.50 and Mg 0.40 Ti 0.10 Ni 0.50 alloys are 41.7%, 83.7% and 90.3%, respectively. At higher discharge current density of 1200 mA g −1 , the HRD values are 26.7%, 34.8% and 46.2%, respectively.
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Desalination and Water Treatment
·
2024
·
IF 1
Qiuxiang Liu,Jinhui Fang,Sulin Ni,Shasha Tang,Zhiqiao He
A hybrid electrode comprised of Pd and Co 3 O 4 supported on Ni foam (Pd-Co 3 O 4 /Ni foam) was applied toward the dechlorination of 2,4-dichlorophenoxyacetic acid (2,4-D). The effects of the reaction condition, such as Co 3 O 4 and Pd loading, current density, initial concentration of 2,4-D, temperature and dissolved anions, on the electrochemical dechlorination process were investigated and interpreted based on an indirect reduction mechanism via active atomic H*. The optimal Pd and Co 3 O 4 loading were determined to be 0.47 and 0.51 mg/cm 2 , respectively. A highest current efficiency of 12.10% was obtained at a current density of 1.50 mA/cm 2 , an initial 2,4-D concentration of 50 mg/L and reaction temperature of 298 K, and the apparent activation energy of 2,4-D dechlorination by the Pd-Co 3 O 4 /Ni foam electrode was calculated to be 42.33 × 10 3 J/mol. In addition, dissolved anions such as S 2- , SO 3 2- and NO 3 - suppress the catalytic activity, whereas HCO 3 - and Cl - have a negligible effect on the reaction process. The Pd-Co 3 O 4 /Ni foam electrode can also be applied to the dechlorination of 2,4-D in natural water bodies as well as other chlorinated organic compounds, such as chlorophenols.
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Green Chemical Engineering
·
2024
·Vol. 7
·期 1
·51-60
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IF 9.1
Siqi Chen,Xin Zhou,Shuo Wang,Ping Zhang,Wenbin Wu,Xiaohong Liu,Guilin Feng,Bin Zhang,Wangyan Xing,Meihua Zuo,Ping Zhang,Wei Xiang
Incorporating high valence dopants, such as W 6+ and Mo 6+ has been verified to be effective for tuning the microstructure and grain boundary of polycrystal Ni-rich cathode. However, the hindered consolidation of primary particles induced by dopants during lithiation calcination limits the utilization of those dopants to crystalize single-crystal Ni-rich cathodes with stabilized lattice and surface. Herein, high performance single crystal LiNi 0.84 Co 0.11 Mn 0.05 O 2 cathode with Al 3+ and W 6+ regulated lattice and boundary phase was construed based on commercial process with two-step calcination process containing separated lithiation and crystallization. The introduction of appropriate amount of Al 3+ in the first lithiation calcination of 6 h endows the bulk of crystalline with enhanced lattice stability, while the incorporation of W 6+ with stoichiometrical LiOH in the secondary crystallization calcination of 6 h renders uniformly distributed surface layer without hampering the growth of single-crystal. With the Al 3+ doped bulk lattice, W 6+ doped subsurface region and hetero-epitaxially grown Li 2 WO 4 , the cathode infused by two-step calcination exhibits high discharge capacity, rate performance, and cycling stability. Specifically, the modified LiNi 0.84 Co 0.11 Mn 0.05 O 2 exhibits exceptional capacity retention, maintaining 88.98% of its initial capacity after 200 cycles at a rate of 1 C within a voltage window of 2.7–4.3 V at a temperature of 25 °C in half-cell. This performance is markedly superior to the capacity retention of 72.96% observed for pristine cathode. Even when subjected to a stringent test after 200 cycles at the same rate, the modified cathode sustains an impressive capacity retention of 82.41% at an elevated cut-off voltage of 4.5 V and a temperature of 30 °C.
研究领域:
材料科学
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电化学
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能源存储
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无机化学
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固体化学
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Journal of Materials Chemistry A
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2023
·Vol. 11
·期 6
·2979-2984
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IF 11.9
Wu Wei,Zhihong Wang,Liyun Yao,Hao Jiang,Chunzhong Li
Development of Ni-rich and Co-poor cathodes (Ni ≥ 80%, Co ≤ 5%) is indispensable for the next-generation lithium-ion batteries (LIBs) owing to the serious impact of scarce resources and fragile supply chain of cobalt, but they suffer from a more prominent lattice oxygen emission with serious Li/Ni intermixing as well as worsening crystal and interface structure. Herein, CeO2−x-coated LiNi0.9Co0.045Mn0.045Al0.01O2 has been demonstrated to stabilize lattice oxygen by the well-dispersed Al–O bonds and the reversible oxygen-storage protective layer. The in situ DEMS and ex situ spectral analyses verified the negligible O2 and CO2 emission, even charging to 4.4 V, and the formation of stable cathode–electrolyte interfacial membrane. The as-obtained cathode exhibited a reversible specific capacity as high as 223 mA h g−1 at 0.1C and 140 mA h g−1 even at 10C with 96.7% capacity retention at 1C after 100 cycles in a coin-type half-cell. About 90.1% capacity retention could still be obtained at 1C in a pouch-type full-cell after 300 cycles. This work provides a viable cathode for durable LIBs by stabilizing the lattice oxygen of Ni-rich and Co-poor cathodes.
研究领域:
电化学
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材料科学
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能源存储
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锂离子电池
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固态化学
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表面科学
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电极材料
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ADVANCED POWDER TECHNOLOGY
·
2026
·Vol. 37
·期 9
·105408
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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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BIOMASS & BIOENERGY
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2026
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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
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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
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2026
·Vol. 61
·期 34
·25602-25621
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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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