JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2025
·
IF 2.6
Ding Binbin,Dai Hu,Xu Weilai,Chen Yuxi,Xia Xiaohong,Tang Qunli
Prussian white and its analogues are regarded as promising cathode candidates for sodium-ion batteries because of their high capacity, facile synthesis and abundant resource. However, their cyclic lifespans are limited. One of the main reasons is the complex phase transformations of their crystal structure during the insertion/desertion of sodium ions. Herein, nickel-doped manganese-based Prussian white composited with carbon nanotubes were synthesized with the aim to stabilize crystal structure during charging/discharging and consequently enhance cyclic performance. Structural and chemical characterizations indicate that the doped nickel atoms occupy lattice sites of manganese. Electrochemical evaluations indicate that the obtained cubic-structured Na 1.55 Mn 0.94 Ni 0.06 [Fe(CN) 6 ] 0.92 ∙2.74H 2 O/carbon nanotubes delivers a reversible capacity of 98 mAh g −1 with an initial coulombic efficiency of 97% at 1C and still maintains 64 mAh g −1 after 400 cycles. Serial ex situ X-ray diffractions disclose that the nickel-doped manganese-based Prussian white maintains its cubic structure during the insertion/desertion of the sodium ions. No phase transformation is observed except a little variation of the lattice constants. The structural stability enables high cyclic stability. Nickel doping and carbon nanotube composition are efficient ways to improve the electrochemical performance of the manganese-based Prussian white for sodium-ion batteries. Graphical abstract
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Zhongsheng Liu,Taixing Zhang,Hejing Wen,Pengfei Hu,Lei Chen,Jia Qiao,Jianchun Wu,Jianhong Yang
Aluminum-ion batteries (AIBs) have garnered significant attention due to their high theoretical capacity, low cost, and high safety. However, finding suitable cathode materials is a challenge due to the complex energy storage mechanism of multivalent ions, which severely limits the practical applications of AIBs. Polyaniline (PANI) is widely used in rechargeable batteries, but its polymerization reaction causes several problems that limit its use in AIBs. To address the issue, PANI material coordinated with Ni 2+ (Ni-PANI) is synthesized by introducing NiCl 2 ·6H 2 O with chemical oxidation, compared with PANI as the cathode materials for AIBs. A better electrochemical performance with Ni-PANI cathode is displayed at a voltage range of 0.1–2.2 V in comparison with PANI. Furthermore, the effects of introducing Ni 2+ are investigated on the reaction mechanism through ex-situ characterization. The coordination of Ni element with N in PANI increases the interaction between the molecular chains of polyaniline, and improves the mechanical strength, thus affecting its cycling stability. At the same time, the conversion between different N structures increases and improves the adsorption of AlCl 2 + , presenting high electrochemical performance of AIBs. A new strategy is presented for the development of organic polymer cathode materials for AIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Longyao Xu,Lin Hao,Ruohan Yang,Ming Su,Yufan Zhang
In this study, a simple one-pot method was employed to synthesize an iron-nickel-carbon composite material. Glucose-derived mesoporous carbon spheres (CS) were used as a template, while urea served as a linking agent. Well-defined iron-nickel nanoparticles (Fe-Ni NPs) were incorporated into the CS to form a passion fruit-shaped structure. The resulting FeNi/CS catalyst exhibits excellent synergistic effects, effectively promoting electron transfer and charge migration. This composite material also demonstrates outstanding electrocatalytic performance for detecting nitrobenzene (NB). The results show a wide detection linear range from 1 to 1000 μM, with a low detection limit of 0.12 μM, as well as good anti-interference capability and high sensitivity. Furthermore, NB monitoring in real water samples yields satisfactory recovery rates ranging from 97.18 % to 102.75 %. The unique electrochemical sensor offers a novel approach for NB detection.
研究领域:
环境科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Junru Li,Hui Wang,Xuefei Wang,Jinmei Ye,Xiaodong Wang,Bingchun Xue
In this study, a bimetallic nickel-doped Zn-MOF (Ni@Zn-MOF) was successfully fabricated by the hydrothermal method for the removal of norfloxacin (NOR) in pharmaceutical wastewater. The structural and surface characteristics of Ni@Zn-MOF were systematically characterized using SEM-EDS, BET, XRD, FT-IR, XPS, and Zeta potential analyses. The experimental results demonstrated that NOR could be effectively removed within a wide pH range from 3 to 11, achieving a maximum removal efficiency of approximately 94% under optimal adsorption conditions. The adsorption behaviors of NOR were in good accordance with the pseudo-second-order kinetic model and the Freundlich isotherm model. The adsorption mechanism study revealed that the good adsorption performance originated from the synergistic effects of multiple interactions, including pore filling, metal coordination, electrostatic attraction, hydrogen bond, and π-π stacking interactions. Notably, the adsorption-saturated Ni@Zn-MOF demonstrated exceptional regeneration capability and stability, maintaining removal efficiencies above 60% for NOR after five consecutive adsorption-desorption cycles. The current study suggests that the engineered Ni@Zn-MOF nanocomposite can be as a promising functional material for sustainable removal of residual antibiotic contaminants in practical wastewater treatment applications.
研究领域:
环境科学
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材料科学
·
污染治理
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Xuanqi Hao,Wenbin Shi,Ping Yang
To address the issues of low photoluminescence quantum yields (PLQYs), broad PL spectra, and poor stability, multicolor carbon dots (CDs) were synthesized by using different precursors. Blue-emitting CDs were created via a solvothermal synthesis by using citric acid and ethylenediamine while green-emitting CDs were fabricated using O-phenylenediamine. Ni doping further increased the PLQYs and stability of CDs. Ni-doped CDs (Ni-CDs) with blue- and green-emitting were synthesized through a one-step solvothermal method. The PL peak wavelengths of Ni-doped blue CDs (Ni-BCDs) and Ni-doped green CDs (Ni-GCDs) were located at 450 and 540 nm, respectively. After Ni-doping, the average particle size of green-emitting CDs was increased from 2.35 to 2.65 nm. Compared with undoped CDs, Ni-CDs exhibited narrow PL spectra, high PLQYs, and long fluorescent lifetime. The PLQYs of Ni-BCDs and Ni-GCDs were increased to 83.92 and 35.60 %, respectively. Interestingly, the PL peak wavelengths of Ni-doped CDs revealed a red-shift with increasing the solvent polarity (e.g. acetone, acetonitrile , N, N-dimethylformamide, tetrahydrofuran, dimethyl sulfoxide , ethanol, methanol, and H 2 O). In addition, the PL peaks of green-emitting Ni-CDs generated a large red-shift with increase the ratio of water in organic solvents compared with blue one. Namely, solid Ni-GCDs powders also revealed water dependent PL. After incorporating the CDs in flexible films, Ni-GCDs still revealed high brightness and stability. These results supplied important possibility for the application of multicolor CDs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 27
·39439-39453
·
IF 0
Liu Shitong,Wang Jun,Liu Yang,Yang Baojun,Hong Maoxin,Yu Shichao,Qiu Guanzhou
Red mud (RM) is a typical bulk solid waste with Fe/Al/Si/Ca-rich characteristics that has been used to prepare various heterogeneous catalysts such as iron-based catalysts and supported catalysts. Prussian blue analogues (PBA) is a low-cost, environmentally friendly, and active site rich iron-based metal organic framework, but its catalytic properties are adversely affected by their easy aggregation. In this study, nickel-doped RM-based PBA (RM-Ni PBA) was synthesized by acid dissolution-coprecipitation method for the degradation of ciprofloxacin (CIP). The characterization showed that RM-Ni PBA was a material with excellent dispersibility, large specific surface area, and abundant active sites. The degradation results showed that the removal efficiency of CIP in the RM-Ni PBA/H 2 O 2 system was 16.63, 1.78, and 1.81 times that of RM, RM-PB, and Ni PBA, respectively. It was found that 1 O 2 was the main reactive oxygen species (ROS) dominated the degradation process, and its formation was accompanied by the mutual conversion of Ni(II)/Fe(II) and Ni(III)/Fe(III). Notably, the degradation process maintained a satisfactory efficiency over a wide pH range (3–9) and exhibited strong anti-interference ability against impurities such as Cl − , SO 4 2− , and NO 3 − . The components and contents of RM-Ni PBA remained relatively stable during the degradation process. In addition, the degradation intermediates of CIP were identified, and possible degradation pathways were proposed. This study is expected to provide theoretical basis and technical guidance for the application of RM-based heterogeneous catalyst in the treatment of antibiotic wastewater.
研究领域:
环境科学
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材料科学
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废水处理
✓ 已验证
产品关联
DOI
PubMed
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Jing Zhang,Sara Paydar,Nabeela Akbar,Chunjie Yan
Nowadays, semiconductor ionic materials have drawn significant attention for developing new electrolytes in low temperature solid oxide fuel cells (LT-SOFCs). Here we investigate the effect of nickel doping on ionic conductivity of Sm 2 O 3 as an electrolyte material for low temperature SOFCs. The amount of Ni ion doping has an intense effect on the electrochemical properties and power generation . An optimized composition of 10 mol% nickel doped samarium oxide (10NSO) as an electrolyte in the fuel cell has a high open circuit voltage (OCV) of 1.09 V and a notable power output of 1080 mW cm −2 at 520 °C. Further investigation revealed that the 10NSO displays a superior ionic conduction up to 0.26 S cm −1 at 520 °C. Moreover, the cell demonstrates high stability up to 80 h. The high electrochemical property and good stability recommend that the NSO is a favorable candidate for symmetrical SOFC electrolyte .
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Shuanglong Lu,Junjie Wu,Hongyin Hu,Xingxing Pan,Zhenbin Hu,Huining Li,Han Zhu,Fang Duan,Mingliang Du
Exploring efficient, stable, and earth-abundant electrocatalysts for oxygen evolution reaction (OER) is of great significance for clean and renewable energy conversion technologies. In this work, in situ uniform Ni-doped tungsten carbide (Ni/WC X ) nanoparticles (~3 nm) on carbon nanofibers (Ni/WC X -CNFs) that were to function as efficient OER catalysts were developed. Both the composition and electronic state of tungsten carbide (WC X : W-WC-W 2 C) could be regulated through varied Ni coupling. Owing to the synergistic effect between Ni and WC X , the reaction kinetics were facilitated, resulting in improved OER activity with low overpotentials of η 10 = 350 mV (modified glassy carbon electrode) and η 10 = 335 mV (self-supporting electrode). This work opens a facile territory for the development of cost-effective and highly promising OER electrocatalysts for use in real life applications.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2019
·Vol. 144
·期 24
·7283-7289
·
IF 4.019
Yuan-Fei Gao,Xing Jin,Fen-Ying Kong,Zhong-Xia Wang,Wei Wang
In this contribution, a one-pot method possessing the advantages of easy preparation, rapidness, efficiency and environmental friendliness has been developed for the first time for the facile synthesis of highly fluorescent actinian nickel-doped carbon nanoflowers (Ni-CNFWs) by using nickel(II)acetylacetonate as a metal–carbon source. Various characterization studies indicate that metal nickel atoms have been successfully doped into carbon nanoflower frameworks with a weight percentage of 1.46 wt%. The Ni-CNFWs showed a “shell–core” actinian structure with ∼400 nm diameter and highly efficient fluorescence quenching ability in the presence of quercetin (Qut) due to the formed Meisenheimer complexes via the conjugation effect of p, π-electrons between Ni-CNFWs and Qut, which allowed the analysis of Qut in a very facile method. Under the optimal conditions, the decreased fluorescence of Ni-CNFWs showed a good linear relationship with the concentration of Qut ranging from 0.5 to 300.0 μM, and the limit of detection was 0.137 μM (3σ/k). Finally, the content of Qut in bovine serum was successfully detected with the novel on–off sensor, and the recoveries were 97.3–101.9%, which indicate that the constructed on–off sensor has a high selectivity and accuracy.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Yaning Wang,Xiaohang Sun,Xiaohan Yu,Rongjun Zhang,Binhang Yan
Effects of A-site cation substitution and B-site active metal doping-segregation on physicochemical properties of Ni-doped perovskite-structured LnFe 0.7 Ni 0.3 O 3 (Ln = La, Nd, Sm, Eu) catalysts and their catalytic performance for dry reforming of ethane (DRE) were studied. The DRE activity follows the trend: NdFe 0.7 Ni 0.3 O 3 > SmFe 0.7 Ni 0.3 O 3 > EuFe 0.7 Ni 0.3 O 3 > LaFe 0.7 Ni 0.3 O 3 . The doping-segregation process of Ni was demonstrated by in-situ X-ray Diffraction (XRD) and X-ray Absorption Fine Structure (XAFS) measurements, which significantly improves the dispersion of Ni and enhance the interaction between metal and support. The results of temperature-programmed surface reactions (TPSR) and pulse reactions indicate that oxygen vacancies generated by the exsolution of Ni play an important role in the elimination of coke and shift the product from surface carbon to gaseous CO. According to the in-situ Raman experiments, the superior catalytic stability (no coke deposition or activity loss over 100 h) of NdFe 0.7 Ni 0.3 O 3 is ascribed to its strong resistance towards carbon deposition.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 17
·2942
·
IF 5.719
Fancong Zeng,Yingrui Sui,Meiling Ma,Na Zhao,Tianyue Wang,Zhanwu Wang,Lili Yang,Fengyou Wang,Huanan Li,Bin Yao
Cu2Ni0·05Zn0·95Sn(S,Se)4(CNZTSSe) films were synthesized on Mo-coated glass substrates by the simple sol–gel means combined with the selenization process, and CNZTSSe-based solar cells were successfully prepared. The effects of selenization temperature on the performance and the photoelectric conversion efficiency (PCE) of the solar cells were systematically studied. The results show that the crystallinity of films increases as the selenization temperature raises based on nickel (Ni) doping. When the selenization temperature reached 540 °C, CNZTSSe films with a large grain size and a smooth surface can be obtained. The Se doping level gradually increased, and Se occupied the S position in the lattice as the selenization temperature was increased so that the optical band gap (Eg) of the CNZTSSe film could be adjusted in the range of 1.14 to 1.06 eV. In addition, the Ni doping can inhibit the deep level defect of SnZnand the defect cluster [2CuZn+ SnZn]. It reduces the carrier recombination path. Finally, at the optimal selenization temperature of 540 °C, the open circuit voltage (Voc) of the prepared device reached 344 mV and the PCE reached 5.16%.Keywords:solar cell;selenidation temperature;CNZTSSe;sol gel
研究领域:
材料科学
·
太阳能电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHEMISTRY
·
2020
·Vol. 88
·期 6
·532-539
·
IF 1.099
Ruifang CHEN,BiXia WEN,Changwei SU,Wei BAI,Junming GUO
LiMn2O4 cathodes are prepared by a rapid microwave-induced solution combustion method. Their initial discharge capacity is significantly improved by introducing trace Ni. For example, the LiMn1.975Ni0.025O4 (LMNO-0.025) cathode releases an initial discharge capacity of 134.1 mAh g−1 at 1 C, even 144.5 mAh g−1 at 0.5 C, which is far higher than of the pristine LiMn2O4 cathode (119.7 mAh g−1 at 1 C) and close to its theoretical capacity of 148.2 mAh g−1. After 1000 cycles, the capacity retention of the LMNO-0.025 sample reaches 56.53 % at 1 C, and it can be presented the higher capacity retentions of 66.79 % at 5 C and 66.89 % at 20 C. The robust structure stability proved by XRD, SEM and HRTEM data, and the good kinetics testified by CV and EIS data of the Ni-doped material are responsible to improve the high-rate capability and long cycle properties.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）