Journal of Energy Storage
·
2025
·
IF 9.8
Gang Li,Ye Jin,Zhongjia Dai,Rui Jiang,Jinyu Zheng
The high nickel stoichiometry in Li[Ni 0.8 Co 0.1 Mn 0.1 ]O 2 (NCM811) cathode materials, while advantageous for specific capacity enhancement, introduces concomitant challenges including (i) surface instability due to high surface residual Li compounds (RLCs) content, and (ii) accelerated structural degradation and deleterious phase transitions during electrochemical cycling. To address these challenges, NCM811 was treated with an aqueous solution of ammonium niobium oxalate, which not only reduced the RLCs content on the surface, but also in-situ constructed a LiNbO 3 coating layer on the surface of the NCM811 materials after the re-calcination process. Within a potential range of 2.75–4.3 V at 0.5C and 25 °C, the Nb-modified NCM811 materials exhibit the advantages of improved specific capacity of 215.3 mAh g −1 and excellent capacity retention of 92.3 % after 200 cycles. This integrated approach synergistically combines wet coating with re-calcination treatment to achieve dual modification of NCM811 cathodes-simultaneously reducing RLCs while enabling in-situ construction of a lattice-doped LiNbO 3 coating layer, demonstrating exceptional potential for scalable industrial implementation through its combined performance enhancement and process compatibility.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenyao Duan,Siwei Liu,Chunhao Wang,Guangmei Cao,Chunyun Hu,Xia Jiang
Green hydrogen production from biomass via gasification process is an emerging and widely concerned technology. However, tar as a byproduct of the gasification process can clog and corrode gasification equipment, thereby reducing gasification efficiency. While steam reforming technology can efficiently convert tar into H 2 , the catalyst deactivation remains a significant challenge. This research synthesized novel NiAl catalysts by one-pot evaporation-induced self-assembly (EISA) method for converting tar into H 2 . The results revealed that the 2.4-NiAl-7 catalyst was the most active, achieving a toluene conversion rate of 99.9 %, a hydrogen yield of 181.2 mmol/g toluene at 750 °C, and demonstrating excellent resistance to carbon deposition and long-term stability with a steam/carbon(S/C) ratio of 3. A series of characterizations confirmed that moderate metal-support interaction was crucial because of the confinement effect (embedding Ni nanoparticles into the mesopore) and the unique NiAl spinel structure. Additionally, the SRT performance (gas yields) was found to be positively correlated with the degree of Ni dispersion. This research reveals new insights in designing a catalyst for long-term practical applications in the conversion of tar into H 2 during steam reforming.
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Jiangnan Chen,Zhouchao Wang,Lin Xu,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
In the realm of glucose detection, nickel-based and copper-based nanocomposites have garnered significant attention due to their exceptional catalytic performance and high sensitivity. This study realized linear detection across dual concentration ranges in alkaline media by in situ growing Ni/Cu-BTC spherical nanocatalysts on reduced graphene oxide (rGO). From 350 μM to 2.95 mM, with a low detection limit (LOD L ) of 21.7 μM (S/N = 3) and a sensitivity (S L ) of 40 nA mM −1 cm −2 ; from 2.95 mM to 9.45 mM, the high-concentration detection limit (LOD H ) is 1.1 mM (S/N = 3), with an improved sensitivity (S H ) of 165.7 nA mM −1 cm −2 . The response time (t) is under 2 s. Additionally, the sensor demonstrated robust interference resistance, excellent stability (%RSD = 3.57 %), repeatability (%RSD = 2.27 %), and reproducibility (%RSD = 2.34 %). In real-world sample testing, this sensor measured glucose concentrations in plasma from healthy individuals both on an empty stomach and half an hour after eating, with a relative standard deviation range of 0.94 %–2.33 %. These results suggest that the rGO-Ni/Cu-BTC composite is a promising enzyme-free electrochemical sensing material for glucose detection
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Pengcheng Wang,Jiaxin Li,Xuanpan Xu,Zhanhong Peng,Yihui Song,Yuan Yao,Ting Zhu,Weibin Zhang,Qianjin Wang,Hong-En Wang,Chen Qing
Developing efficient electrocatalysts for the alkaline hydrogen evolution reaction (HER) remains challenging due to sluggish water dissociation and suboptimal hydrogen adsorption. Herein, we report an in-situ precursor-leaching-induced strategy for fabricating Co x Ni 1-x (OH) 2 solid solution nanorod arrays via complete Mo leaching from hydrothermally grown Co x Ni 1-x MoO 4 ·H 2 O on Ni-Co foam. This transformation preserves the one-dimensional architecture, yielding a Mo-free, binder-free electrode with exceptional HER activity, characterized by overpotentials of 38 mV and 208 mV at 10 and 50 mA cm -2 , respectively, and stability over 300 h at 100 mA cm -2 . Experimental and theoretical analyses reveal that adjacent Ni and Co sites synergistically optimize the adsorption thermodynamics of hydrogen intermediates and promote interfacial charge transfer, while Mo is fully removed as a sacrificial component that triggers the in-situ reconstruction into a Co–Ni hydroxide solid solution. This work provides a practical route to high-performance alkaline HER catalysts enabled by atomic-level Ni–Co electronic synergy.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Lei Zhang,Tian Ai,Nan Zhang,Bo Peng,Ya Gao,Quanying Ma
To efficiently and economically remove phosphates from wastewater, this study employed a microwave–assisted hydrothermal method to successfully synthesise a bimetallic Ni/Ce organic framework composite supported on biochar. Compared to other adsorbents, this composite exhibits smaller particle size, more uniform morphology and greater defect density. Its unique structure facilitates electron transfer between the metals and the support while increasing the number of oxygen vacancies, thereby significantly enhancing adsorption performance. Adsorption experiments demonstrate that NiCe–BC–MOFs achieves adsorption equilibrium within 80 min, with a maximum adsorption capacity of 266.67 mg P/g – far exceeding most reported values in the literature. The material exhibits excellent adaptability and stability across a broad pH range (2 – 10), in the presence of multiple coexisting anions, and within diverse aquatic matrices. Its high efficiency was further validated in real phosphorus–containing wastewater. Its adsorption mechanism involves the synergistic action of hydrogen bonding, ligand exchange, ion exchange, and electrostatic attraction. Furthermore, the incorporation of biochar effectively reduces material costs, and after five cycles, the adsorption capacity remains above 82%, demonstrating good regenerability. Consequently, NiCe–BC–MOFs represent a phosphate adsorption material that combines high efficiency, low cost, and environmental friendliness, offering broad application prospects.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Ting Xiao,Fozia Sultana,Xiaojing Liu,Yu Duan,Renkun Li,Kexin Sun,Tongtong Li,Renhong Li
Exploiting low-crystallinity as a structural feature offers a powerful route to unlock new catalytic functionalities by maximizing defect density, tuning electronic structures, and facilitating rapid charge transfer. Moreover, the disordered catalysts are prone to electrochemical reconstruction, generating highly active oxyhydroxide species, thus promoting the catalytic activity. Here, we first prepare a low-crystallinity Ni(OH) 2 /FeOOH heterojunction pre-catalyst directly grown on nickel foam via electrodeposition, followed by electrochemical reconstruction to synthesize the final electrocatalyst with surface-enriched Ni-Fe oxyhydroxide species (ER-Ni(OH) 2 /FeOOH). The defect-rich structure synergistically couples Ni and Fe species, enabling an exceptionally low overpotential of 241 mV at 100 mA cm −2 for the alkaline oxygen evolution reaction (OER), while maintaining stable operation for over 40 h. The density functional theory (DFT) calculations confirm that the low-crystallinity heterointerface tunes the electronic structure and lowers the energy barrier for the rate-determining (RDS) *OH→*O step, thus providing a theoretical basis for the observed enhancement in OER activity. This work underscores the potential of low-crystallinity interface engineering as a powerful approach for constructing next-generation OER catalysts.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 12
·10761
·
IF 6.1
Wenbin Jia,Pengju Wu,Chao Wu,Meng Yang,Ying Wu
Developing highly efficient and stable selenium-doped transition metal bimetallic catalysts to replace precious metal electrocatalysts for the alkaline oxygen evolution reaction (OER) remains an ongoing challenge. This paper reported the synthesis of a highly efficient redox-active selenium-doped bimetallic composite catalyst (Se–CoNi@NCNTs) via a one-step pyrolysis method using cobalt-nickel and g-C 3 N 4 as precursors. The Se–CoNi@NCNTs catalyst delivered a current density of 10 mA cm −2 at a low overpotential of merely 289 mV. Furthermore, in a 1 M KOH solution, the Tafel slope for electron transfer kinetics was determined to be 66.94 mV dec −1 . It exhibited excellent stability during 100 h of alkaline overcurrent operation, with negligible electrocatalytic current density loss during 100 h of continuous electrolysis. Enhanced electrochemical performance was observed in 1 M KOH + 0.33 M urea electrolyte, requiring only a low overpotential of 98 mV to deliver a current density of 10 mA cm −2 . Utilizing in situ catalysis of g-C 3 N 4 precursors with metallic nanoparticles to generate nitrogen-doped carbon nanotubes (NCNTs) endows the composite CoNiSe compound with high intrinsic activity and conductivity, enabling highly efficient water oxidation. Developing highly efficient and stable selenium-doped transition metal bimetallic catalysts to replace precious metal electrocatalysts for the alkaline oxygen evolution reaction (OER) remains an ongoing challenge.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2026
·
IF 13.1
Shengxiong Huang,Chunhao Wang,Guangmei Cao,Haijun Wu,Ping Zou,Shuxian Weng,Xia Jiang
Ni-loaded perovskite catalysts are one of the most promising catalytic materials for industrial applications and have received a great deal of attention in the field of steam reforming of biomass tar into hydrogen (H2). In this study, the Ni-LaFeO3 catalysts with different Ni coordination states were comparatively analyzed in terms of toluene steam-reforming performances. A significant correlation was found between support Ni (NiSup) ratio and H2 yield, with a NiSup ratio of 64.68% corresponding to the highest hydrogen yield of 171.35 mmol of H2/g of toluene (conversion rate of 93.88%). In-situ DRIFTS experiments and DFT calculations demonstrated that NiSup could promote the adsorption of toluene and the desorption of −COO*─a key intermediate of the rate-determining step─thereby enhancing catalytic activity and hydrogen yield. This finding confirms the effect of the Ni coordination state on catalytic activity and provides an important pathway for Ni-based perovskite catalyst design to support biomass-derived hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 8
·10028-10034
·
IF 3.45
Dengwei Hu,Fan Zhao,Lei Miao,Zhen Zhang,Yan Wang,Hualei Cheng,Yinfeng Han,Meijuan Tian,Hongxi Gu,Rong Ma
The present work investigated the effect of the addition of V 2 O 5 and MnCO 3 on the microstructure and magnetic properties of Ni-Zn ferrite ceramic samples prepared by a conventional ceramic sintering method at different temperatures. With this aim, a series of samples were prepared by varying the loadings of V 2 O 5 -MnCO 3 (un-doped, 0.4–0.1 wt%, 0.1–0.4 wt%, 0.2–0.3 wt%, 0.3–0.2 wt%, and 0.5–0.1 wt%, denoted as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6, respectively). The initial permeability and power loss of the different Ni-Zn ferrites were investigated with respect to the sintering temperature . The V 2 O 5 and MnCO 3 dopants significantly improved the initial permeability and power loss characteristics of the Ni-Zn ferrite at frequencies ≥0.5 MHz. When sintered at 1100 °C, sample 2 showed a maximum initial permeability of 931.23 H/m at a frequency of 1 MHz combined with a minimum power loss of 339.2 kW/m 3 . Co-doping with V 2 O 5 and MnCO 3 also resulted in the sintered samples with larger average grain sizes and higher density, while the sintering temperature of Ni-Zn ferrites was significantly reduced.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yanshuai Yuan,Lei Wang,Qiangchao Sun,Wei Nie,Linhui Chang,Shuangqiang Chen,Hongwei Cheng
Nickel-rich layered oxides are considered one of the most promising cathode materials for efficient lithium-ion batteries due to their high energy density and reasonable cost. However, at high cut-off voltage, the interfacial instability and structural degradation lead to severe capacity attenuation and poor thermal stability, which greatly hinder their large-scale applications. Herein, a multifunctional antispinel NiFe 2 O 4 coated LiNi 0.6 Co 0.2 Mn 0.2 O 2 (NCM@NFO) material is in-situ induced by co-precipitation and subsequent sintering, boosting the cycling stability of Ni-rich materials. Coupling in-depth characterizations ( in-situ X-ray diffraction, etc.) with density functional theory calculations, the versatility of the NFO coating has been revealed. Including suppressing the transition metal dissolution, preventing the unwanted phase transition, inhibiting the oxygen vacancy generation, and stabilizing the crystal structure of the NCM by forming an M-O-N bonding network. More importantly, attributing to the high ion/electron conductivity of the NFO layer, the Li + transport kinetics between NCM@NFO particles have been facilitated. Benefitting from the collaborative effect of the protective NFO coating, the optimized 2 wt% NFO@NCM (NCM@NFO-2) sample achieves higher capacity retention (81.25 vs 67.88% after 200 cycles) at high voltages (2.75 ∼ 4.5 [email protected] ) and more excellent rate capabilities (109.86 vs 49.52 mAh·g −1 at 10C), as well as impressive capacity retention of 81.72% after 100 cycles (at 60 °C@1C). Constructing a versatile bimetallic oxide protective layer at the secondary particle surface of layered oxides provides an effective strategy for Ni-rich cathodes towards high-energy, long-duration, and safe lithium ion batteries.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Ruxia Song,Shihong Zhang,Yi He,Teng He,Hongjie Li,Bo Liu,Zhifei Zhang,Yahui He
A new type of Ni-Cu/Si 3 N 4 nanocomposites was prepared by pulse electrodeposition technology, which can be used for corrosion protection in seawater environment. XRD , SEM, AFM, EDS and XPS were used to study the structure, morphology, and surface composition of the deposited layers. The hardness and anti-corrosion performance of the deposits were evaluated using a microhardness tester and an electrochemical workstation. Meanwhile, the samples were characterized by EIS , SEM, EDS and XPS after immersion in simulated seawater for 7 days, 14 days, and 28 days. The results show that the average crystallite size of the nanocomposite with face-centered cubic structure is 13.2 nm, and has a dense granular nodular structure without obvious defects. EDS and XPS demonstrated the successful embedding of Si 3 N 4 nanoparticles with uniform distribution in the coating. Besides, it was found that embedding Si 3 N 4 particles in Ni-Cu alloy coatings can significantly strengthen the microhardness and anti-corrosion performance of the material. Furthermore, the Ni-Cu-Si 3 N 4 (0.7 g·L −1 ) nanocomposite exhibited excellent corrosion resistance even after immersion in simulated seawater medium for 28 days.
✓ 已验证
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2013
·
IF 2.915
Songbai Qiu,Xue Zhang,Qiying Liu,Tiejun Wang,Qi Zhang,Longlong Ma
A simple method for preparing highly active and dispersed supported metal catalysts was developed by co-impregnation. Compared with conventional wetness impregnation, addition of moderate ethylene glycol into the metal nitrate aqueous solution could enhance interaction with MCM-41 surface, resulting in formation of very small NiO particle size (3.5 nm) and high dispersion of the active phase. The Ni/MCM-41 catalysts using co-impregnation exhibited excellent catalytic performance for low temperature hydrogenation of naphthalene with 100% conversion at 55 °C, which could rival the activity of commercial Raney Ni catalyst. The obtained catalysts were characterized by XRD, TEM, TG-DSC, FT-IR, BET and TPR.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）