SURFACE & COATINGS TECHNOLOGY
·
2016
·
IF 2.139
Yun Chen,Yali Hao,Wei Huang,Yan Ji,Wenzhong Yang,Xiaoshuang Yin,Ying Liu,Xiang Ling
Ni-P-nano-Al 2 O 3 composite coatings on the mild steel were obtained by adding Al 2 O 3 nanoparticles into the traditional electroless Ni-P bath. Cationic and anionic surfactants were used to prevent the agglomeration of the incorporated nano-Al 2 O 3 . Surface morphology , compositions and microstructures of the coating were studied using scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) as well. Corrosion resistances of the modified mild steel samples were evaluated in 3.5 wt.% NaCl solution by electrochemical impedance spectroscopy (EIS). The results showed that compared to the pure Ni-P coating on the mild steel, the coating formed in the bath with 6 g/L nano-Al 2 O 3 performed the highest resistance. Under the optimal conditions, the adding of anionic surfactant (SDBS) improved the anti-corrosion performance of the samples further, while the addition of cationic surfactant led to a worse corrosion resistance. The potential mechanism was that anionic surfactant molecules would contact with active sites of Ni-P composite coating and nano-Al 2 O 3 in the bath, which would improve the dispersion of nano-Al 2 O 3 , thus leading to a homogeneous coating with better corrosion resistance.
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高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Hexin Liu,Xinyu Liu,Zhenyu Wang,Lingyun Zhu,Xing Zhang
All-solid-state batteries (ASSBs) have attracted much attention in the fields of energy storage, electric vehicles, and portable electronic devices due to their safety and high energy density. Ni-rich layered ternary materials (LiNi1–y–zCoyMnzO2, 1 – y – z ≥ 0.7) are considered to be among the most promising candidates for cathode materials in ASSBs due to their unique advantages. Nevertheless, the interfacial chemical reaction between the ternary cathode (NCM) and solid-state electrolytes (SSEs) has become the main issue to limit the long-cycle stability of the cathode. Relative studies have shown that when NCM materials are in direct contact with sulfide-based SSEs, byproducts generated by the interfacial chemical reaction accumulate at the interface, resulting in increasing interfacial impedance. However, up to now, the formation mechanism of the NCM/SSE interfacial chemical reaction, as well as its properties and evolution process, still lacks detailed characterization. In this paper, batteries at different stages during the long-cycling process are characterized to reveal the dynamic evolution process of the chemical reaction from the cathode–electrolyte interface to the interior of the particle and to determine the chemical reaction effect on the irreversible degradation of the battery capacity. On this basis, a surface coating of LiNbO3 is adopted to establish a passivation protection layer at the cathode–electrolyte interface. The coated battery has been subjected to 2000 charge/discharge cycles at a rate of 1 C and achieved a capacity retention rate of up to 82%.
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 7
·期 11
·10825-10834
·
IF 1.5
Zhenhua Yan,Min Wang,Baoxu Huang,Jinsheng Zhao,Renmin Liu
This work discusses a low-cost and high performance catalyst of the oxygen reduction reaction (ORR) in microbial fuel cells (MFCs). The catalyst was formed by Pt–Ni (15 wt% Pt) nanoparticles dispersed on carboxyl multi-wall carbon nanotubes (Pt-Ni/MWNT). The catalyst particle presents a nano- crystalline structure and has an average diameter of ca.7.1 nm based on the X-ray diffraction and transmission electron microscopy measurement. The electrocatalytic stability and activity of the catalyst was evaluated by cyclic voltammogram and chronopotentiometry. The MFC with a Pt-Ni/MWNT cathode produced a maximum power density of 1.22 W/m 2 , which was close to that with a Pt/C (20 wt% Pt) cathode (1.40 W/m 2 ); the Coulombic efficiency reaches 31.6%, which was better than that of the Pt/C (29.3%). The total cost of a Pt-Ni/MWNT catalyst was much lower than that of a Pt/C catalyst. Thus, the Pt-Ni/MWNT probably provides a new solution for finding effective cathode materials for MFC.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuanyuan Li,Jianwei Li,Zhen Zeng,Xiao Xu,Jun Cheng,Hongqiang Zhang,Jing Li,Yiwei Rao,Ying Deng,Lijie Ci,Deping Li
All-solid-state batteries (ASSBs) employing sulfide solid electrolytes (SSE) and high-nickel layered oxide cathodes have attracted considerable attention, attributed to their superior safety and great potential for high energy densities. However, the interface compatibility between SSE and nickel-rich oxide cathode remains a challenge. Here, a dual-functional strategy of Li 6.25 La 3 Zr 2 Al 0.25 O 12 surface coating and bulk Zr doping in LiNi 0.8 Co 0.1 Mn 0.1 O 2 was proposed (NCM811@CD-LLZAO), aiming to enhance the interfacial compatibility toward sulfide-based ASSBs. The fabricated ASSBs exhibit an impressive capacity retention rate of 91.1% after 100cycles at 0.1C and can sustain an ultra-long cycling performance over 1000cycles at 1.0C. Remarkably, even at a high rate of 11.0C, the battery still maintains a high capacity, highlighting its excellent rate performance. The distribution of relaxation time (DRT) analysis reveals that the LLZAO buffering layer can enhance the kinetics at the cathode/electrolyte interface. Theoretical calculation further confirms that the strong Zr-O bond formed by Zr doping can stabilize the lattice oxygen and effectively prevent the sulfide solid electrolyte from further electrochemical oxidation, thereby enhancing the interfacial dynamic and stability. These encouraging results provide a new strategy for the practical application of high-energy–density ASSBs, enabling fast charge transfer, extended cycle longevity and enhanced safety.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 37
·e74658
·
IF 2.3
Feifei Xing,Yuheng Jing,Fei Wang,Junfeng Feng,Yuwei Chen,Baining Lin,Rukuan Liu,Jianchun Jiang
Developing low-cost and sulfur-free catalysts is essential for converting waste lipids into green diesel. Herein, hydroxyapatite-supported Ni–Fe catalysts were prepared via a one-step co-precipitation strategy and evaluated for lipid hydrotreatment. The optimized 20Ni–Fe/HAP catalyst delivered 97.1% conversion and 89.1% alkane yield in fatty acid hydrotreatment at 240°C, far outperforming the impregnation-derived counterpart, which gave only 13.1% alkane yield under identical conditions. Characterization results revealed that the superior performance originated from the formation of highly dispersed Ni 3 Fe species, abundant accessible Ni active sites, enlarged surface area, and suitable acidity distribution. Increasing the Ni loading beyond 20 wt.% failed to further improve the activity because of reduced active-site accessibility and pore diffusion efficiency. The catalyst also showed excellent adaptability toward practical feedstocks, affording over 98% alkane yields from used cooking oil and acidified vegetable oil at 260°C. Moreover, 20Ni–Fe/HAP maintained stable performance during five consecutive runs, with negligible changes in conversion and C15–C18 alkane yield. This work provides an efficient Ni–Fe/HAP catalytic system for sustainable production of diesel-range alkanes from waste lipids. Graphical One-step coprecipitation creates a Ni 3 Fe catalyst supported on hydroxyapatite with abundant accessible Ni sites and suitable acidity for efficient lipid hydrotreatment. The optimized 20Ni–Fe/HAP catalyst affords high yields of diesel range alkanes under mild conditions, converts used cooking oil and acidified vegetable oil, and remains stable over five consecutive cycles without noble metals or sulfur.
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高影响因子
IONICS
·
2026
·
IF 3.4
Gong Gu,Liu Xiangyu,Ma Hao,Lv Du,Luo Hao,Liang Miaomiao,Zhou Yuan,Wang Haiyang,Zhao Yuzhen,Lashari Najeeb ur Rehman,Miao Zongcheng
The development of high-performance supercapacitor electrodes relies on the rational design of material structures with optimized electrochemical properties. In this work, we report a two-dimensional sponge-like NiS 2 architecture synthesized via a MOF-derived sulfurization strategy. The unique hierarchical porous structure, featuring abundant mesopores and high specific surface area, facilitates efficient ion diffusion and provides numerous electroactive sites for redox reactions. The resulting NiS 2 electrode exhibits outstanding specific capacitance (1227.5 F g − 1 at 0.5 A g − 1 ) with good cycling stability in alkaline electrolyte. Moreover, the NiS 2 electrode demonstrates bifunctionality and can be effectively employed in aqueous Ni-Zn batteries, delivering high specific capacity and stable long-term performance. This study establishes NiS 2 as a promising electrode material for aqueous energy storage devices and provides a feasible synthetic pathway for designing high-performance transition metal sulfide electrodes.
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高影响因子
Catalysis Science & Technology
·
2025
·
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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高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Hai Zhang,Yixuan Meng,Fan Wang,Ze Zhang,Zhenyu Yang
This work introduces nickel (II) tetraphenylporphyrin (NiTPP) as a multifunctional electrolyte additive to simultaneously address polysulfide shuttle and uncontrolled lithium dendrite growth in lithium–sulfur (Li–S) batteries. Mobile NiTPP species act as homogeneous catalysts with Ni–N 4 centers for rapid polysulfide redox mediation to suppress migration, while planar molecules featuring lithium-affinity capability migrate to the lithium metal surfaces, enabling uniform lithium flux and anode protection. NiTPP-modified electrolytes significantly enhance Li–S battery performance, demonstrated by 634.9 mAh g −1 at 4C, 758.3 mAh g −1 after 100 cycles at 0.2 C (83.4% retention), and 757.5 mAh g −1 under high sulfur loading (2.9 mg cm −2 ) with lean electrolyte ( E / S = 5 μL mg −1 ), all with high Coulombic efficiency. Crucially, NiTPP, acting as a soluble dual-functional mediator enabling homogeneous operation in electrolytes, simplifies Li–S battery fabrication while demonstrating the commercial viability of molecularly engineered mobile active sites for stabilizing both electrodes in high-energy-density Li–S batteries.
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高影响因子
Energies
·
2025
·Vol. 18
·期 12
·3205
·
IF 3.2
Yao Lv,Liqiu Shi,Jianfeng Yu,Shifei Huang
Sodium-ion batteries are renowned for their abundant reserves, cost-efficiency, safety, and eco-friendliness and are prime candidates for large-scale energy storage applications. The development of cathode materials plays a crucial role in shaping both the commercialization path and the ultimate performance capabilities of SIBs. To overcome the intricate synthesis challenges associated with pure-phase sodium-ion cathode materials, this study introduces an innovative and streamlined electrochemical Li+/Na+exchange process, successfully fabricating a high-capacity Ni-rich cathode material. This cathode material boasts a remarkable reversible capacity of 180 mAh g−1at 0.1 C and retains a high-rate capacity of 115 mAh g−1even at 5 C. Additionally, it exhibits exceptional cycling stability, retaining about 85% of its capacity at 1 C after 50 cycles and still maintaining a capacity greater than 60% after 100 cycles. The Na-NMA85 full cell preserves a discharge capacity of 110 mAh g−1after 100 cycles, with a capacity retention rate of 80%. This research underscores innovative strategies for designing ion-intercalation-based cathode materials that enhance battery performance, providing fresh perspectives for advancing high-performance battery technologies.
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高影响因子
CARBON
·
2026
·
IF 12.7
Xiao Zhang,Yuan Zhuang,Haozhong Yuan,Kaixuan Wei,Renlong Ma,Huiting Hu,Zhixiang Zeng,Yuanxian Gao,Wenliang Bi,Hongchen Liu,Jian Liu
The electrocatalytic CO 2 reduction reaction (ECR) represents a promising strategy for converting CO 2 into value-added chemicals while mitigating greenhouse gas emissions. However, developing efficient and stable electrocatalysts remains challenging. In this study, we synthesized a Ni-based single-atom catalyst (Ni/NSP-C) via pyrolysis of a PZS/Ni-ZIF-8 precursor derived from ZIF-8. The resulting catalyst exhibits a hollow polyhedral structure with high surface area and porosity. Crucially, heteroatoms S and P were successfully incorporated into the primary coordination shell of Ni active sites, forming Ni-S and Ni-P bonds that modulate the electronic structure. Electrochemical tests revealed that Ni/NSP-C exhibits efficient ECR performance: a high current density of 402.3 mA cm -2 at -1.5 V vs. RHE, and CO Faradaic efficiency above 94 % over a wide potential window (-0.4 to -1.2 V), reaching 99.61 % at -0.8 V. The catalyst also demonstrated excellent stability over 24 h. Density functional theory (DFT) calculations further revealed that the S and P co-doping lowers the energy barrier for *COOH formation and suppresses the hydrogen evolution reaction, thereby enhancing ECR selectivity and efficiency. This work provides a universal coordination engineering strategy for optimizing the performance of single-atom catalysts in various electrocatalytic applications.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Jiling Zhao,Zhaonan Yan,Qing Zhao,Weiran Diao,Ruichao Zhang,Jingyi Feng,Pingxia Zhang,Juan Wen,Yong Qin
The pursuit of high-purity cobalt is driven by its irreplaceable role in advanced electronic devices, particularly as a promising interconnect material for next-generation integrated circuits. However, the coexistence of nickel, which shares highly similar physicochemical properties with cobalt, presents a critical bottleneck in achieving electronic-grade purity cobalt. Developing efficient and selective separation materials is therefore paramount. In this study, we designed and synthesized an environmentally friendly adsorbent-chitosan beads functionalized with bis(2-pyridylmethyl)amine (CBs-PY). The CBs-PY adsorbent exhibits exceptional selectivity for Ni(II) over Co(II) under strongly acidic conditions (pH 2), achieving a remarkable separation factor of 100.31, significantly outperforming conventional pyridine-based resins. X-ray absorption spectroscopy (XANES/EXAFS) revealed the formation of stable Ni–N2 coordination structure on CBs-PY, with adsorbed Ni(II) ions showing low surface oligomerization. Furthermore, the adsorbent demonstrats excellent acid stability, reusability, and consistent performance in high-salinity environments. This work provides a sustainable and efficient strategy for the separation of Ni(II) and Co(II) in acidic media, offering significant potential for applications.
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PubMed
高影响因子
International Journal of Applied Ceramic Technology
·
2026
·Vol. 23
·期 1
·e70146
·
IF 2.6
Kiran Shoukat,Muhammad Irfan,Saba Shoukat,Syed Imran Abbas Shah,Kareem Yusuf,Adeel Hussain Chughtai,Muhammad Fahad Ehsan
Simplifying water electrolysis systems and enhancing hydrogen production efficiency can be achieved by developing high-performance electrocatalysts. This paper presents the synthesis of nickel-doped indium selenide (Ni@InSe) on nickel foam (NF) through a hydrothermal reaction. The distinct three-dimensional structure of NF acts as the reaction skeleton, facilitating gas diffusion and electron conduction. Different physical and electrochemical techniques successfully characterize the synthesized materials. InSe carries 0.10043 s − 1 , while the doped material Ni@InSe carries 0.1308 s − 1 TOF values. The XRD results show that InSe and Ni@InSe exhibited crystal sizes of about 45 and 30 nm, respectively. InSe and Ni@InSe revealed an overpotential of 349 and 260 mV at 10 mA·cm −2 current density through a minor Tafel slope value of 70 and 35 mV·dec −1 , respectively, within 1.0 M KOH electrolyte. Doped material also exhibits excellent stability as well. These extraordinary results are owing to the extremely crystalline nature, several active sites, great electrical conductivity, and porosity of the synthesized material, which refers it to its use in different energy-related fields.
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高影响因子
危险品化学品经营许可证（带存储）