JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 8
·6036-6044
·
IF 2.22
Wang Shimin,Xiang Mingwu,Lu Yao,Guo Junming,Su Changwei,Bai Hongli,Liu Xiaofang
A series of aluminum and nickel (Al–Ni) co-doped LiAl 0.15 Ni x Mn 1.85− x O 4 composites are prepared through a facile solid-state combustion method. All the as-obtained materials show a spinel structure and analogous spherical morphology with uniform particle distribution. Moreover, the synergistic merits of Al and Ni dual substitutions endow the spinel LiMn 2 O 4 with an elevated Mn average valence state of 3.59 and relatively alleviative Jahn–Teller distortion. Among these samples, the LiAl 0.15 Ni 0.03 Mn 1.82 O 4 (LANMO-0.03) cathode exhibits an optimal electrochemical performance with the discharge capacities of 103.3 mAh g −1 and 102 mAh g −1 at 1 C and 5 C in the first cycle, and the capacity retentions are 72.0% and 68.6% after 1000 cycles, respectively. Even at 1 C and high temperature of 55 °C, an excellent capacity retention remained to be 76.6% after 200 cycles. Furthermore, the LANMO-0.03 has good Li + diffusion capability during charge/discharge, the D Li + value of the LANMO-0.03 (1.65 × 10 –11 cm 2 ∙s −1 ) is higher than that of the LiAl 0.15 Mn 1.85 O 4 (LAMO) (8.12 × 10 –12 cm 2 ∙s −1 ), and the charge transfer resistances of the LAMO and LANMO-0.03 samples are almost the same at 150 Ω before cycling but decrease to 130 Ω and 95 Ω after 1000 cycles at 1 C, respectively. These results demonstrate that the Al–Ni co-doped strategy can enhance the structural stability and provide stable Li + diffusion channel during the long cycles even at elevated temperature. Meanwhile, the facile solid-state combustion approach can also be extended to the preparation of other dual cation-doped electrode materials.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Tao Zhang,Zhiyuan Ling
Architecture construction of electrode is one key factor for hydrogen generation from electrochemical water splitting. To enhance the efficiency of oxygen evolution reaction (OER) at high current density , the architecture construction must be designed skillfully to prevent the surface blanketed by gas bubbles. In this work, we developed a three-level hierarchical surface with cluster-like nickel (Ni) nanowire array. The contact angle measurement indicates the surface having excellent hydrophilicity . The OER performance characterization reveals that after the surface is loaded with NiFe-based catalyst the Ni nanowire array electrode can deliver 500 mA cm −2 at an overpotential of 297 mV in 1 M KOH solution and can survive for over 24 h under 500 mA cm −2 operation. All the results demonstrate that the cluster-like nanowire array is beneficial for the spatial pathway separation for electrolyte supply and gas bubbles departure and the enhancement of OER efficiency.
研究领域:
材料科学
·
电化学
·
能源材料
·
纳米技术
·
催化化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Feihong Shen,Yanyan Zheng,Lei Miao,Chengyan Liu,Jie Gao,Xiaoyang Wang,Pengfei Liu,Kenta Yoshida,Huanfu Cai
At present, copper sulfide materials have been predicted as promising thermoelectric materials due to their inexpensiveness and nontoxicity property. Most researches on copper sulfide are focused on Cu2S and Cu1.8S because they are more easily synthesized into a single phase; however, the improper electrical conductivity greatly hindered their thermoelectric properties. In this work, a series of high-performance Cu1.9–xNixS (x = 0, 0.01, 0.015, and 0.02) bulk samples were fabricated by accurately manipulating the ratio of Cu/S with appropriate Ni-doping. The thermoelectric properties of Ni-doped Cu1.9S were explored in detail for the first time. It can be found that carrier thermal conductivity and lattice thermal conductivity of Cu1.9–xNixS were effectively reduced via Ni-doping, simultaneously, without the great influence on the power factor. Here, the carrier thermal conductivity (κe) was reduced due to the extreme reduction of Hall carrier concentration. In addition, amounts of nanopores introduced by Ni-doping and complex crystal structure from the phase transition of the second phase strengthen the phonon scattering and reduce lattice thermal conductivity (κl) remarkably. As a consequence, the lowest carrier thermal conductivity and lattice thermal conductivity reach 0.006 and 1.08 W m–1 K–1 for Cu1.88Ni0.02S at 773 K, and the average ZT is about 0.39 from 323 to 773 K (the ZTmax is about 0.9 at 773 K). This work demonstrates that low-cost and easily fabricated Ni-doped Cu1.9S is a pleasurable candidate for thermoelectric application despite it usually being treated as an ion conductor.
研究领域:
材料科学
·
热电材料
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无机化学
·
能量转换材料
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高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xinping Duan,Jinlin Lu,Zhaojun Wen,Xuelian Liang,Haiqiang Lin,Linmin Ye,Youzhu Yuan
In supported metal catalysis, conventional strong metal-support interaction (SMSI) often leads to the encapsulation of active metal sites, thereby suppressing catalytic performance, for instance, nickel-based in thermocatalytic CO 2 hydrogenation. Here, we demonstrate that constructing a defective TiO x overlayer on anatase TiO 2 via room-temperature NaBH 4 treatment effectively transforms the classical SMSI state into a quasi-reactive metal-support interaction (quasi-RMSI) in Ni/TiO 2 -based catalysts. This pre-engineered interface, abundant in Ti 3+ and oxygen vacancies, prevents the formation of a dense TiO x encapsulation layer while facilitating electron transfer to Ni nanoparticles and promoting the activation of both CO 2 and H 2 . As a result, the Ni catalyst exhibits a one-order-of-magnitude increase in the CO 2 methanation rate with nearly 100% CH 4 selectivity, a 12-fold enhancement in turnover frequency, and exceptional long-term stability over 200 h. Combined spectroscopic and microscopic analyses reveal that the quasi-RMSI creates a highly active and accessible Ni-TiO x interface, which significantly accelerates CO 2 dissociation and sequential hydrogenation. This work establishes a general defect-engineering strategy for designing high-performance CO 2 methanation catalysts via tailored quasi-RMSI.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zeming Yuan,Yize Sun,Chenxu Liu,Tingting Zhai,Xia Li,Zhonggang Han,Yanghuan Zhang
A novel catalyst of Ni/CeVO 4- x @NC (nano carbon) was prepared via the coprecipitation-reduction method and then ball-milled with MgH 2 . During the precipitation process, elemental Ni was formed in situ. The catalyst was characterized to have a multiphase structure, with CeVO 3 as the main phase coexisting with the CeVO 4 phase; the latter contains abundant oxygen vacancies (denoted as CeVO 4- x ). Oxygen vacancy defects facilitate the efficient dissociation of MgH 2 and exert a synergistic catalytic effect with metallic Ni, as well as multivalent Ce and V species. The MgH 2 + 4 wt% Ni/CeVO 4- x @NC composite absorbs 5.36 wt% H 2 within 2 min at 553 K and releases 5.71 wt% H 2 within 78 min. This composite exhibits an initial hydrogen desorption temperature of 465 K, which contributes to the reduction of MgH 2 's thermodynamic stability. First-principles calculations were performed on the MgH 2 + Ni/CeVO 3 @NC model, encompassing the states of the composite both before and after hydrogen absorption and desorption. It was found that the introduction of metallic Ni provides additional quantum states and active sites for electron migration, thereby enhancing the electron transfer capability of the composite surface.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Mengyue Liu,Hao Tian,Zhuang Jiang,Yong Gao,Zhenwen Yu,Ruize Xu,Kun Chang
Achieving long-term stable zinc anodes at high currents and capacities remains a great challenge for practical aqueous alkaline zinc-nickel batteries. Herein, we construct a coordination-gradient interphase by integrating a carboxyl-functional carbon shell with spatially graded Zn 2 + binding affinity. The resulting interphase exhibits a stratified distribution of oxygen-containing groups, establishing a directional pathway for Zn 2 + transport. This gradient structure suppresses hydrogen evolution and passivation by preserving ZnO lattice integrity, while simultaneously regulating the electric field and Zn 2 + flux to promote uniform deposition and inhibit dendrite growth under demanding operating conditions. As a result, the coordinated-gradient Zn anode enables stable cycling for over 900 h in a Zn||Zn symmetric cell at 5 mA cm − 2 with negligible polarization, which outperforms most previously reported modified Zn anodes in alkaline electrolytes. The proposed gradient interphase design is scalable, and a high-performance Zn-Ni full battery with high mass loading (50 mg cm − 2 ) is also demonstrated, delivering an areal capacity of 17 mAh cm − 2 at 80 mA cm − 2 and retaining nearly full capacity over 9000 cycles with a Coulombic efficiency of 92%.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Dawei Zhang,Lei Huang,Haoyu Li,Menglin Niu,Zeeshan Abbasi,Yue Li,Tongqi Ye,Xuelan Hou,Maofeng Zhang,Jie Ren
The development of high-activity Ni-based catalysts for efficient CO2 methanation remains challenging, primarily due to Ni particle aggregation under high loading conditions, which limits their long-term stability at low temperature. To address this issue, this work evaluates the effect of doping with typical metals M (i.e., Co, La, Fe, and Ce) on the properties of Ni–Mg–Al layered double oxides (LDOs). The Ni–Co LDO (Ni/Co = 18:2, wt%), with the lowest activation energy (i.e., 54.5 kJ/mol), achieved 80% CO2 conversion and 99.9% CH4 selectivity at 350 °C, while Ni–La LDO only showed 73% CO2 conversion. The catalytic performance of optimized Ni–Co LDO is also quite stable under a 140 h time-on-stream thermal shock evaluation. Comprehensive characterization reveals that Co doping is particularly effective in generating abundant oxygen vacancies, creating numerous interfacial basic sites and stabilizing small Ni particles. In situ DRIFTS analysis further elucidates the resulting differences in reaction intermediates, pathways, and coordination environments, linking the enhanced structural properties to superior catalytic performance.
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高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 17
·e71045
·
IF 4.1
Sheng Huang,Lianwei Deng,Gao-Feng Chen,Liang-Xin Ding,Haihui Wang
Electrocatalytic ozone production (EOP) provides a sustainable route for advanced oxidation processes. Among various candidates, β-PbO 2 stands out as a proven ozone catalyst; however, its widespread implementation is severely hindered by sluggish kinetics and poor selectivity. Herein, we report a Ni-mediated electrocrystallization strategy that perturbs the local Pb–O environment within the β-PbO 2 framework without appreciable Ni incorporation into the final catalyst. Synchrotron x-ray absorption spectroscopy (XAS), combined with x-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS), suggests the presence of lattice strain, electronic-state redistribution, and enhanced local structural disorder. These coupled geometric and electronic changes are consistent with enhanced lattice-oxygen participation during EOP. Consequently, the lattice oxygen-activated PbO 2 (O act -PbO 2 ) exhibits an O 3 yield of 425.6 mg h −1 g cat −1 (a 4.21-fold enhancement over pristine PbO 2 ) and a Faradaic efficiency of 14.73% at 2.5 V versus Ag/AgCl. Notably, an O 3 concentration of 12.30 mg L −1 is achieved within 5 min, and the electrode maintains stable operation for 300 h at 100 mA cm −2 . Furthermore, we establish a rapid and reliable analytical protocol for the quantification of electrogenerated O 3 . This work provides atomic-level insights into lattice oxygen activation and offers an effective strategy for the design of high-efficiency ozone electrosynthesis catalysts. Graphical A Ni-mediated electrocrystallization strategy is employed to regulate the local Pb–O framework without appreciable Ni incorporation. The resulting geometric and electronic modulations favor lattice-oxygen participation during ozone electrosynthesis, enabling an O 3 concentration of 12.30 mg L −1 and stable operation for 300 h.
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高影响因子
ACS Catalysis
·
2026
·Vol. 16
·期 17
·16793-16808
·
IF 13.6
Wang Nan,Fan Guorui,Guo Junhao,Chen Yuqiu,Liu Sibao,Liu Guozhu
To address the challenge of mixed plastic waste management, we present a one-pot hydrodeoxygenation (HDO) process that selectively converts mixed oxygenated aromatic plastics including polyethylene terephthalate (PET), polycarbonate (PC), polyphenyl ether (PPO), and bisphenol-A-based epoxy resin (E20) into high-value cycloalkanes suitable as blendstocks for aviation fuel. Employing a cost-effective Ni−Re/SiO 2 bimetallic catalyst with metal loadings of 15.0 wt % Ni and 11.9 wt % Re, we achieve near-quantitative conversion (up to ca. 94% carbon yield) under mild reaction conditions (240 ° C, 4 MPa H 2 ) and at a high substrate loading of 11.4 wt %. The HDO reaction proceeds through the initial depolymerization of the polymers via acyl and alkyl C−O hydrogenolysis, followed by hydrogenation and deoxygenation. Mechanistic studies including systematic characterizations, control experiments with model compounds, in situ spectroscopy, and DFT calculations indicate that Ni−Re alloy serves as the active site for HDO, with electron-deficient metallic Ni facilitating hydrogen activation and aromatic ring hydrogenation, while oxophilic Re species promote the adsorption and cleavage of diverse C−O bonds. Furthermore, the upscaling potential of this catalytic process was evaluated by integrating laboratory-scale batch experiments with steady-state process simulation (Aspen Plus). Techno-economic analysis (TEA) and life cycle assessment (LCA) reveal that increasing the plastic feedstock concentrations from 4.5 wt % to 11.4 wt % significantly optimizes both economic and environmental performance: the minimum selling price (MSP) is reduced by 6.89% (from 1349 $/t to 1256 $/t), and the global warming potential (GWP) is lowered by 20.7% (from 3.05 to 2.42 kg CO 2 eq). This work provides a practical and non-noble-metal approach for chemically upcycling high concentrated mixed plastic waste, effectively bridging plastic waste valorization with aviation fuel production.
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Jian Tian,Xuwen Zhang,Mengge Wu,Benhuan Xu,Kok Bing Tan,Bin Chen,Guowu Zhan
The conversion of stearic acid to linear hydrocarbons represents a critical step in the advancement of sustainable biofuels and biochemicals. In this work, a confined NiCo bimetallic catalyst (Nix-Co/C@TSC) was assembled on biochar derived from natural Tung shell (TS) using an in situ growth approach for the H2-free catalytic deoxygenation of fatty acids. The catalyst exhibited exceptional catalytic performance, achieving a high conversion of 98.2% and a remarkable selectivity of 82.8% for heptadecane. Multiple characterization revealed that the Tung shell-derived biochar (TSC) support significantly enhanced the spatial dispersion of Co and Ni species, promoting the formation of the NiCo alloy phase. This structural modification, combined with improved reactant adsorption capabilities, synergistically boosted the overall catalytic activity. In situ DRIFTS analysis revealed that CoOx species activate stearic acid via strong carboxyl-group adsorption, while Ni preferentially promotes the decarboxylation pathway by stabilizing key intermediates, collectively facilitating heptadecane formation. This work develops a novel dual carbon-supported bimetallic catalyst system, offering a promising strategy for the efficient conversion of stearic acid into high-value hydrocarbon products.
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Lingying Chen,Jiangchuan Liu,Qinke Tang,Qingzhu Wang,Zeyang Zhang,Kai Liu,Wenrui Li,Jiguang Zhang,Rui Shi,Yana Liu,Jun Wang,Yunfeng Zhu
Active metal hydrolysis is favored for safety and environmental friendliness in the field of hydrogen generation. In practice, however, dense oxide/hydroxide films form instantaneously on the metal surface; these passivating layers act as electronic insulators that severely curtail charge transfer and, consequently, suppress hydrogen evolution. Herein, a novel heterostructure of NiO/Ni(OH)2 was designed to enhance the electron transfer rate in the magnesium powder hydrolysis system, achieving rapid hydrogen production. Surprisingly, Mg-2 wt % NiO/Ni(OH)2 achieved a near 100% conversion rate, producing 880.2 mL g–1 of H2 in only 20 s at 30 °C. Its maximum hydrogen generation rate (mHGR) surpassed that of pure magnesium by 35-fold, and such hydrolysis performance is superior to all the reported results of catalyzed-Mg systems so far. Theoretical studies confirmed that the space charge region in NiO/Ni(OH)2 affects the electronic structure; thus, the correspondingly generated built-in electric field accelerated the hydrolysis of magnesium and greatly facilitated the electron transfer of the system. This work provides a strategy for designing nickel-based oxides/hydroxides catalysts for light metal hydrolysis and facilitates the understanding of the catalytic mechanism in multiphase catalytic systems.
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产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2019
·
IF 7.723
Yuanyuan Ma,Zhongling Lang,Jing Du,Likai Yan,Yonghui Wang,Huaqiao Tan,Shifa Ullah Khan,Yang Liu,Zhenhui Kang,Yangguang Li
Selective reduction of nitroarenes is extremely valuable in industrial chemical production. The main reduced products are usually aniline derivatives obtained using single-component noble- or transition-metal catalysts; however, other important products such as hydrazobenzene derivatives always involve in harsh conditions and multiple reaction steps. Here, we realize an unexpected switchable reduction of nitroarenes into aniline or hydrazobenzene derivatives with high yield and selectivity just by controlling the molar ratio of nitroarenes to N 2 H 4 ·H 2 O with a nickel–tungsten carbide composite nanocatalyst loaded on carbon (Ni-WC/C). A series of control experiments and density functional theory (DFT) calculations indicate that the multiple interfaces between Ni and WC can induce a synergistic effect, significantly modulating the electronic structure of the Ni-WC/C catalyst, and endowing the catalyst with switchable selectivity and high activity for the reduction of nitroarenes by hydrogenation. This synergistic multi-interfacial catalyst may offer a new way to design and explore highly efficient and selective catalysts for the controllable reduction of nitroarenes and similar hydrogenation reactions.
研究领域:
催化化学
·
有机合成
·
纳米材料
·
表面科学
·
工业化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）