ACS Omega
·
2022
·
IF 4.132
Xin Zhou,Shuangshuang Li,Aijiao Mao,Qi Wang,Jiachao Yang,Jingying Zheng,Na Wen,Hongbing Zhan,Yu-Ying Zheng,Yen Wei
With the rapid advance of laser technology in the photonicera, damage to precision optical instruments caused by exposure to sudden intense laser pulses has stimulated the search for effective optical power limiting materials exhibiting good dispersion, fast response speed, and good visible light transparency. In this study, novel binary Ni-based mixed MOF NSs (M = Mn, Zn, Co, Cd, Fe) were obtained, making the electronic transition more selective and changing the band gap to obtain an excellent reverse saturation absorption signal. The theoretical calculation results show that with the doping of the Fe element, the band gap of Ni-MOF NSs decreases from 3.12 to 0.66 eV of Ni-Fe-MOF NSs, indicating that the doping of the Fe element has a positive effect on the reverse saturated absorption. The experimental results prove that the optical limiting threshold of Ni-Fe-MOF NSs is better than the GNSs, indicating that the Ni–Fe-MOF NSs have a broad application prospect in the field of nonlinear optics and photonics.
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Jiao Chen,Hongye Qin,Yaping Pan,Jinli Wu,Jianan Liu,Wanying Lin,Jun Jiang,Enzuo Liu,Junwei Sha,Fang He,Liying Ma,Naiqin Zhao
It is necessary and challenging to develop platinum-based electrocatalysts with low Pt content and high performance for industrial development in a suitable strategy. Herein, ultralow Pt (0.35 wt%) loading Ni(OH) 2 nanosheets (named as 2-Pt/Ni(OH) 2 ) with cataphracted structure is synthesized on nickel foam by one-step hydrothermal process. It only needs an overpotential of 34 mV to achieve a current density of 10 mA cm -2 without any significant decrease for 40 hours. This excellent performance of hydrogen evolution reaction (HER) is attributed to the fact that the cataphracted structure not only has a larger active area and more active sites, but also effectively limits the size of Pt nanoparticles to 2~3 nm, which results in a higher active quality. In addition, the relatively simple and easily operational one-step method can reduce the Pt content to 0.35 wt% significantly. This facile strategy opens up new approaches in the rational design and synthesis of low loading Pt electrocatalysts with eminent electrocatalytic activity for industrial production.
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DOI
高影响因子
Energy Material Advances
·
2023
·
IF 12.9
Jiao Xiang,Yuanduo Qu,Yanxin Zeng,Senyu Hu,Huiling Xu,Hong Xia,Muwei Ji,Lianfeng Duan,Fushen Lu
Lithium–sulfur batteries are considered important devices for the power of movable equipment, but there are still some challenges that limit their applications, such as how to obtain a cathode for high sulfide adsorption and rapid conversion. Here, a new strategy is proposed to enhance the performance of lithium–sulfur batteries by growing 3-dimensional hydrogen-substituted graphdiyne (HsGDY) layers on Ni foam via Glaser cross-coupling reaction to anchor MoS2/Ni3S2, enhancing the conductivity of host material of S. The results show that the 3-dimensional HsGDY framework enables the fast adsorption of lithium polysulfides and the Ni3S2/MoS2 performs as the reaction center with a low charge transfer resistance. The charge capacity of Ni@HsGDY/MoS2/Ni3S2 cell is up to 1,234.7 mAh·g−1 at the first circle, and the specific capacity keeps 486 mAh·g−1 after 500 cycles at a current density of 2 C. The incorporation of HsGDY into the cathode promotes the adsorption and the conversion of polysulfides, paving a path to obtain lithium–sulfur batteries with high energy density.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2020
·Vol. 167
·期 14
·146509
·
IF 3.721
Yijun Liu,Suyu He,Fengping Zhan,Feng Gao,Wei Sun,Qingxiang Wang
Developing robust and low-cost electrocatalysts for efficient hydrogen evolution reaction (HER) through facile methods is of great significance to the energy and environment sustainability. Herein, a simple one-pot solvothermal method has been developed to synthesize a hybrid material of nickel@nickel carbide (Ni@Ni3C) nanochain embedded in a network of single-walled carbon nanotubes (SWCNTs). The electrochemical experiments indicate that the composite of Ni@Ni3C-SWCNTs has the HER electrocatalytic performance comparable to that of Pt/C in an acidic medium (0.5 M H2SO4). The overpotential to reach a current density of 10 mA cm−2 in 0.5 M H2SO4 is only −74 mV with a Tafel slope of 46.9 mV dec−1. Compared to Ni@Ni3C in the absence of SWCNTs, the enhanced HER performance of Ni@Ni3C-SWCNTs can be attributed to the increased intrinsic activity, improved electronic conductivity, and the electron coupling effect between Ni@Ni3C and SWCNTs. The Ni@Ni3C-SWCNTs composites also show high stability at the overpotential of −0.2 V for 24 h. This work provides guidance for the synthesis of high-performance non-precious metal electrocatalysts for HER.
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高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 2
·650-657
·
IF 6.8
Qin Li,Yu Haifeng,Jiang Xin,Chen Ling,Cheng Qilin,Jiang Hao
Single-crystalline ternary cathodes prepared through all-dry solid-phase synthesis (ADSPS) are perceived as prominent candidates for lithium-ion batteries (LIBs) because they are inexpensive and effluent-free. However, the aggravated lithium/oxygen (Li/O) loss and sluggish lithiation process during sintering result in an unstable layered structure and a large amount of surface residual alkali. Herein, a lithium borate (LBO)-coated and strontium/titanium (Sr/Ti) co-doped single-crystalline nickel (Ni)-rich ternary cathode with a highly ordered layered structure is prepared via ADSPS for the first time. The synergistic effect of Sr/Ti ions considerably promotes grain growth with decreased lithiation temperature, which alleviates the Li/Ni disorder and stabilizes the lattice O. After coating with a layer of LBO, the surface residual alkali has been considerably depleted with favorable Li-ion transfer at the interface. Consequently, the as-obtained cathode delivers a high reversible capacity of 191.1 mA h g −1 at 0.1 C in coin-type half cells and superior retention of 90.1% after 500 cycles at 1 C in pouch-type full cells. The unique insight and strategy in this research will promote the application of ADSPS in single-crystalline Ni-rich ternary cathodes for LIBs.
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高影响因子
ACS Applied Nano Materials
·
2020
·
IF 0
Yixiang Pan,Xiaoyan Wang,Jianguo Lu,Qing Yan,Weiyong Yuan,Chang Ming Li
Metal–organic complex (MOC) multilayers are, for the first time, conformally constructed on Ni foam (NF) via a three-component sequential layer-by-layer (LbL) self-assembly approach and converted to three-dimensional (3-D) NF-supported interconnected CoO nanoparticles (NPs)/N-doped carbon nanohybrid multilayers via calcination. The obtained nanoarchitecture delivers an overpotential of 318 mV to achieve 10 mA cm–2 and a Tafel slope of 46.1 mV dec–1. This activity is superior to most reported oxygen evolution reaction (OER) catalysts, and even much better than those of Ir- and Ru-based ones measured under the same conditions (0.1 M KOH). Additionally, this electrode undergoes negligible potential and current change after 19.8 h chronopotentiometric measurement and 300 cyclic voltammetry cycles. The outstanding catalytic performance is mainly attributed to the ultrasmall and high-density CoO NPs embedded in N-doped carbon uniformly assembled on the 3-D substrate significantly increasing electrochemically accessible active sites and durability and the N-doped carbon greatly promoting intrinsic activity of CoO. This work not only creates 3-D highly tunable networked nanostructured electrodes with excellent durability for high-efficiency electrocatalysis but also develops a facile, economical, and extremely versatile strategy to controllably self-assemble conformal MOC-based multilayers with multifunctionality and superior performance on essentially any substrate at the molecular level for broad applications.
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JOURNAL OF NANOPARTICLE RESEARCH
·
2013
·Vol. 15
·期 8
·1-8
·
IF 2.175
Wang Minmin,Ren Wanzhong,Zhao Yunan,Liu Yan,Cui Hongtao
In this work, β-Ni(OH) 2 monolayer nanosheets, which had been thought to be unachievable, were successfully prepared for the first time by a one-pot strategy using epoxide as precipitation agent and sodium dodecyl sulfate (SDS) as surfactant. The characterization results indicate that the formation of monolayer morphology depends on the mediation of SDS molecules. The XRD patterns demonstrate the loose and defective packing of Ni(OH) 2 layers in the SDS intercalated samples. The disappearing of vibration band of free hydroxyl groups in the FTIR spectra suggests the interlayer separation resulted by SDS. The TEM and AFM images further confirm the formation of monolayer nanosheets. It is proposed that the in situ modification of the secondary growth unit of β-Ni(OH) 2 by SDS allows its two-dimensional anisotropic growth through steric hindrance of SDS molecules. In addition, this effect allows isolation of β-Ni(OH) 2 from solvent with keeping of monolayer nanosheet state in dry powder. The electrochemical measurement results indicate that β-Ni(OH) 2 monolayer nanosheets own much higher urea electrolysis performance than their corresponding multilayer structure.
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高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Congwen Duan,Yating Tian,Xinya Wang,Mengmeng Wu,Dong Fu,Yuling Zhang,Wei Lv,Zhaohua Su,Zhiyong Xue,Ying Wu
MgH 2 is one of the most potential hydrogen storage material with a high gravimetric hydrogen storage capacity. however, its applications have been plagued by its high operating temperature and the relatively poor kinetics for releasing and absorbing hydrogen. In the present study, nanoconfinement or catalytic doping were introduced to improve de/rehydrogenation kinetic properties of MgH 2 . The MgH 2 @Ni-CNTs was fabricated by holding the MgH 2 particles on the surface of the CNT-Ni. MgH 2 supported by carbon nanotubes loaded with Ni nanoparticles (MgH 2 @Ni-CNTs) shows a superior H 2 de/ab-sorption kinetics than that of MgH 2 . This nano-composite releases H 2 at 250 °C with the dehydrogenation capacity of 7.29 wt% within 60 min. The dehydrogenation E a of MgH 2 in MgH 2 @Ni-CNTs is reduced to 74.8 kJ/mol by the confining and catalytic impact of Ni-CNTs. It also has a significant improvement on rehydriding kinetics, with a 7.20 wt% H 2 absorption in 30 min even at a temperature as low as 200 °C. Moreover, the MgH 2 @Ni-CNTs also shows good cycling stability without distinct capacity decay after cycling ten times. Studies show that during dehydrogenation and hydrogenation processes , the CNTs-Ni act as confining framework and catalyst, can accelerate diffusion of hydrogen and prevent the Mg/MgH 2 agglomeration. The application of this novel MgH 2 @Ni-CNTs extends the horizon of transition metallic catalyst and nanoconfinement, and offers a novel way to enhance the hydrogen storage property of the nanoconfined MgH 2 .
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Guangyuan Yang,Xu Wang,Zhixiong Huang
To improve the oxidation resistance ability of carbon fiber (CF) in the high temperature environment, the composite electroplating method had been used to fabricate SiC-ZrO-MoSi 2 /Ni coating at the surface of CF. Both nanoparticles and Ni-matrix were plated onto CF successfully while the mechanical property of coated CF was only slightly weakened. The oxidation resistance performance of CF and the CF reinforced phenolic resin composites had been improved obviously. The microstructure of coatings was investigated by scanning electron microscope and X-ray diffraction analysis. Thermal gravimetric analysis was applied to test the anti-oxidation ability of coated CF. The mechanism of oxidation process had been discussed. It can be concluded that composite plating is an effective way to make composite coatings which can enhance the anti-oxidation ability of CF.
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高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 33
·11604-11609
·
IF 4.39
Guojuan Hai,Jianfeng Huang,Liyun Cao,Koji Kajiyoshi,Long Wang,Liangliang Feng,Yijun Liu,Limin Pan
Designing cost-effective bifunctional catalysts with high-performance and durability is of great significance for renewable energy systems. Herein, typical Fe, Ni-codoped W18O49/NF was prepared via a simple solvothermal method. The incorporation of Fe ions enhanced the electronic interaction and enlarged the electrochemically active surface area. The increased W4+ leads to a high proportion of unsaturated WO bonds, thus enhancing the adsorption capacity of water. The valence configuration of nickel (Ni) sites in such dual-cation doping is well adjusted, realizing a high proportion of trivalent Ni ions (Ni3+). Due to the orbital interactions, the Fe3+/Ni3+ ions and OER reaction intermediates exhibit strong orbital overlap. The positions of the valence band and conduction band are well modulated. As a result, the Fe, Ni-codoped W18O49/NF shows improved electrocatalytic activity, and achieves a low decomposition voltage of 1.58 V at 10 mA cm−2 and retains long-time stability.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Yanting Tian,Xiang Guo,Pingping Wu,Xu Zhang,Zhongquan Nie
Ni-based anode supports with straight open pores were well prepared using self-organization process. The scanning electron microscopy (SEM) results of YSZ ceramic skeletons showed that honeycomb-like structures with highly ordered straight pores were obtained. The regulation of solid loading and CaCl 2 concentration on the morphology of YSZ skeletons were discussed. The YSZ skeleton with solid loading of 10 wt% and CaCl 2 concentration of 1.5 mol L −1 delivered a pore size of 99 μm and a porosity of 46.9%. The solid oxide fuel cell based on Ni-YSZ anode possessed a maximum power density of 253 mW cm −2 and an ohmic resistance of 0.16 Ω cm 2 at 800 °C. The pore diameter and porosity of the ceramic supports could be adjusted to expected values by further optimization of the parameters. The self-organization method will become a feasible and valid operation to produce anode supports with appropriate morphologies.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Qu Tang,Xiaobo Zhou,JinXia Liu,Mingmin Wu,Haiwei Ji,Qi Wang,Guo Li,Hui Cong,Yuling Qin
The use of Formic acid as an alternative to fossil fuels is promising, both from economical and ecological standpoints, and has received great of attention owing to its inherently superiority in recent decades. Nevertheless, efficient and low-cost solid catalyst for formic acid dehydrogenation at room temperature still constitutes a biggish challenge. Moreover, comparing to increase the catalytic performance of catalysts, very little attention payed to the kinetic mechanism of dehydrogenation reaction because of the lack of effective characterization artifice. Here, the as-prepared Ni@Pd nanoparticles by a sequential reduction process can be useful catalyst for formic acid decomposition at room temperature without a promoter. Thanks to the effective catalyst and isotope distribution technique, preliminary mechanistic results firstly reveal that hydrogen is obtained via a H-atom recombination on isolated sites after the proton exchange randomly between activated H and solvent.
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高影响因子
危险品化学品经营许可证（带存储）