NANO
·
2024
·
IF 1
Junxiang Mo,Jun Li,Jing Li,Yashan Li
The development of composite materials is a key area of research for enhancing the electrochemical performance of electrode materials. In this study, NiCo–S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using binary metal–organic frameworks (MOFs) as the sacrificial template through a two-step hydrothermal method. Ni–MOF was then deposited on the surface of NiCo–S/NF through the hydrothermal method and subsequently converted into Ni(OH) 2 through a subsequent alkalization treatment. The duration of the Ni–MOF hydrothermal process was varied as a parameter. NiCo–S@Ni–MOF/NF was prepared through hydrothermal reaction for 6 h, 9 h and 12 h, followed by heating in a 6 M KOH solution at 75 ∘ C for 6 h in a water bath. The electrode materials with the best morphology and electrochemical properties were obtained when the hydrothermal reaction time was 6 h. The optimized electrode had a specific capacity of 2533.2 F ⋅ g − 1 at 1 A ⋅ g − 1 and a capacity retention rate of 60.8% at 10 A ⋅ g − 1 , which indicated good rate performance. Additionally, the electrode material demonstrated excellent cycling stability, with a capacity retention rate of 95.3% after 5000 cycles at 50 mV ⋅ s − 1 . The energy density of the hybrid supercapacitor device assembled from this electrode material was 33.5 Wh ⋅ kg − 1 when the power density was 849.89 W ⋅ kg − 1 at a current density of 1 A ⋅ g − 1 .
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Yang Lanlan,Huang Dan,Liu Guoxiang,Wu Yihui
The urea oxidation reaction (UOR) has garnered significant attention as a promising alternative to the oxygen evolution reaction (OER) for water electrolysis, owing to its superior kinetic properties that enable enhanced hydrogen production efficiency. However, the practical deployment of UOR technology remains hindered by the persistent challenge of developing electrocatalysts that simultaneously achieve high activity, long-term operational stability, and cost-effectiveness. Herein, we report a facile, eco-friendly, one-step synthesis process to fabricate nickel–tin electrocatalyst (Ni–Sn) on Ni foam for catalyzing UOR via electrodeposition, using SnCl 2 ·2H 2 O and NiSO 4 ·6H 2 O as the Sn and Ni sources, respectively. Notably, the Ni–Sn electrocatalyst with a Ni/Sn ratio (90.39:8.61 at%) exhibits remarkable UOR activity, delivering a low potential of 1.493 V versus RHE to reach 10 mA·cm −2 , a small Tafel slope of 83.5 mV·dec −1 , and excellent stability with minimal decay after 100 h of continuous operation in alkaline urea electrolyte (1.0 M KOH + 0.33 M urea). The excellent activity of the Ni–Sn electrocatalyst for UOR benefits from the synergistic interaction between Ni and Sn, which modulates the electronic structure and accelerates charge transfer kinetics, thereby significantly enhancing reaction dynamics. Furthermore, the intrinsic superhydrophilicity of the Ni–Sn catalyst promotes efficient mass transport of reactants and products, contributing to its superior bifunctional catalytic performance for UOR.
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高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xinheng Li,Lei Qi,Wanfei Li,Mei Wang,Jianbin Xue,Muzi Chen,Guixin Wang
Electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) into 2,5-furandicarboxylate (FDCA) has attracted great attention due to its potential for producing degradable plastics. But, HMF electrooxidation still faces challenges such as high overpotentials and sluggish kinetics. Meanwhile, H2 evolution at the cathode is less cost-effective than cathodic reactions producing valuable chemicals. In view of this, a MOF-derived CoFeP cube anchored on rGO-encapsulated nickel foam (NF) via a facile wet-chemical method is reported. The CoFeP–rGO catalyst delivers a low potential of 1.38 V at a current density of 100 mA cm−2 in 1 M KOH containing 10 mM HMF, achieving ∼100% conversion, a 96% yield of FDCA, and 100% Faraday efficiency (FE). It acts as a bifunctional catalyst, demonstrating electrocatalytic reduction of nitrobenzene (NB) at low overpotential with 91% conversion. In the proposed mechanism, the CoFeP–rGO interface is proved to play a crucial role in increasing the catalytic activity via promoting dispersion of the CoFeP nanocrystals on the substrate and accelerating the electron transfer rate across the interface.
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高影响因子
Chemical Engineering and Processing-Process Intensification
·
2025
·
IF 3.9
Shichao Su,Yaqiao Tian,Huifeng Li,Weiyao Yang,Hongda Zhang,Feng Liu,Le Sang
The micropacked bed reactor (μPBR) with monolithic catalyst hydrogenation technology has received widespread attention due to its high efficiency, continuous operation, and safety. In this study, the Pd/PDA/foam catalyst was prepared via impregnation method and vanillin (VL) hydrogenation was investigated in green water solution based on the μPBRs. The effect of operating temperature, pressure, the number of foam catalyst block, VL concentration, liquid and H 2 flow rate on VL conversion and VA yield was discussed. The highest conversion of VL was 99.4% and product yield of vanillyl alcohol (VA) reached 84.9% with 2.8 MPa, 120°C, 22 blocks of Pd/PDA/Ni foam catalyst, H 2 flow rate of 10 mL·min −1 and liquid flow rate of 0.1 mL·min −1 , and short reaction time (0.106 h) in μPBRs. The kinetic of hydrogenation VL to VA was established. The reaction rate constant and activation energy in μPBRs were from 0.63 to 1.39 min −1 and 16.94 kJ·mol −1 . The STY of VA in μPBRs was 0.0824 kg·L −1 ·h −1 ·g −1 , which was bigger than that of batch hydrogenation devices.
研究领域:
化学工程
·
催化科学
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DOI
高影响因子
SYNTHETIC METALS
·
2019
·
IF 2.87
Liang Zhang,Jishun Liu,Xiaolei Peng,Qiang Cui,Dong He,Chun Zhao,Hui Suo
Herein, an electrochemical ammonia sensor based on Ni foam-supported silver/polypyrrole and platinum nanoparticles electrode (Pt-Ag/PPy-NiF) was designed and constructed. The Ag/PPy layer was firstly grown on Ni foam surface via oxidation reduction reaction, and then Pt nanoparticles with great electrocatalytic activity were electrodeposited on the surface of Ag/PPy-NiF via cyclic voltammetry methodology. Electrochemical experiments demonstrated that the Pt-Ag/PPy-NiF electrode showed a great electrocatalytic ability of the oxidation of ammonia and an electrochemical aqueous ammonia sensor was proposed accordingly. The ammonia sensor showed a sensitivity of 0.089 mA μM −1 , a detection limit of 37 nM (S/N = 3) and a wide linear range, as well as presenting a good anti-interference capability against many common ions in water. These excellent performances can be mainly attributed to large specific surface of electrode and great electrocatalytic ability of Pt nanoparticles.
研究领域:
材料科学
·
分析化学
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DOI
高影响因子
Surfaces and Interfaces
·
2021
·
IF 4.837
Nanyu Fan,Quan Kong,Ruifeng Lang,Hongtao Guan,Gang Chen,Chengjun Dong
One-dimensional (1D) Zn 2 GeO 4 rods were in-situ grown on Ni foam (NF) using a ethylenediamine (En)/water mixed solvent by a hydrothermal route in one single step. Such rhombohedral phase Zn 2 GeO 4 rods are 1–2 μm in diameter and a few micrometers in length. Ethylenediamine is found to play a critical role in coordinating with starting zinc and germanium ions and acting as template. The Zn 2 GeO 4 /NF was developed as a new none-enzymatic hydrogen peroxide (H 2 O 2 ) sensor. In electrochemical studies, the Zn 2 GeO 4 /NF electrode exhibits high sensitivity (3974 μM mM −1 cm −2 ), wide linear detection range (1–4000 μM), fast response (<9 s), low detection limit (1 μM), excellent selectivity and stability towards H 2 O 2 . Several factors such as intrinsic nature of Zn 2 GeO 4 , the unique microstructure and the seamless contact with NF are believed to attributed to the excellent electrochemical sensing performances.
研究领域:
材料科学
·
生物传感技术
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高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Fangyou Meng,Yuan Yu,Dongfeng Sun,Li Li,Songmin Lin,Luo Huang,Wenhui Chu,Shufang Ma,Bingshe Xu
A novel three-dimensional (3D) flower-like tungsten phosphide (WP 2 ) nanowire arrays catalyst in-situ grown on nickel foam (NF) is explored. Since this 3D nanostructured electrocatalysts (WP 2 NW/NF) can expose the abundant active sites, and promote electrolyte osmosis to shorten the electron transfer path, the WP 2 NW/NF electrode shows excellent electrocatalytic performance. The current densities of the 3D nanostructured WP 2 NW/NF electrode achieve 10 mA cm −2 at lower cell potential of 1.65 V for overall water splitting, revealing that this 3D nanostructured electrode possesses great application prospect in electrolysis of water to produce large-scale hydrogen and oxygen.
研究领域:
材料科学
·
能源化学
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Hongjie Yu,Ziqiang Wang,Shuli Yin,Chunjie Li,You Xu,Xiaonian Li,Liang Wang,Hongjing Wang
As a promising alternative approach to industrial N2 fixation process, electrocatalytic N2 reduction reaction (NRR) can achieve efficient, sustainable, and eco-friendly ammonia production under ambient conditions. Developing efficient NRR catalysts is critical for the electrochemical ammonia synthesis. Herein, self-supported mesoporous Au3Pd film on Ni foam (mAu3Pd/NF) has been in situ synthesized via a micelle-assisted replacement strategy. Combination of bimetallic compositions, interconnected mesoporous structure, and binder-free characteristic, the mAu3Pd/NF shows a superior NRR performance in 0.1 M Na2SO4. This micelle-assisted replacement route is very important to construct efficient self-supporting mesoporous films for the NRR and other fields.
研究领域:
材料科学
·
电化学
·
催化
·
可持续化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·
IF 4.229
Le-Qing Fan,Fei Pan,Qiu-Mei Tu,Yun Gu,Jian-Ling Huang,Yun-Fang Huang,Ji-Huai Wu
Recently more and more concerns have been paid on ternary metal sulfides for use in supercapacitors because of their better electrochemical performances compared with binary counterparts. In this work, CuCo 2 S 4 nanosheet arrays on Ni foam were prepared by a sequential ion-exchange strategy under hydrothermal conditions, where Co 3 O 4 was converted into Co 4 S 3 by an anion-exchange reaction between Co 3 O 4 and S 2− ions, subsequently the Co 4 S 3 was transformed into CuCo 2 S 4 through a cation-exchange reaction with Cu 2+ ions. The as-prepared CuCo 2 S 4 was characterized by powder X-ray diffraction, high-resolution X-ray photoelectron spectroscopy, field emission scanning electron microscopy and transmission electron microscopy . The CuCo 2 S 4 arrays were composed of interconnected thin nanosheets with thickness of about 10 nm. The CuCo 2 S 4 nanosheet arrays on Ni foam were directly employed as a binder-free electrode showing a high specific capacitance of 3132.7 F g −1 at a current density of 1 A g −1 . Besides, an asymmetric supercapacitor based on this synthesized CuCo 2 S 4 electrode as positive electrode and active carbon as negative electrode can deliver a high energy density of 46.1 Wh kg −1 at a power density of 991.6 W kg −1 , and exhibits good rate capability and cycling stability.
研究领域:
材料科学
·
电化学
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高影响因子
Journal of Energy Chemistry
·
2018
·
IF 3.886
Shuai Wang,Jiguo Tu,Jiusan Xiao,Jun Zhu,Shuqiang Jiao
The growing global demands of safe, low-cost and high working voltage energy storage devices trigger strong interests in novel battery concepts beyond state-of-art lithium-ion battery. Herein, a dual-ion battery based on nanostructured Ni 3 S 2 /Ni foam@RGO (NSNR) composite anode is developed, utilizing graphite as cathode material and LiPF 6 -VC-based solvent as electrolyte. The battery operates at high working voltage of 4.2–4.5 V, with superior discharge capacity of ∼90 mA h g −1 at 100 mA g −1 , outstanding rate performance, and long-term cycling stability over 500 cycles with discharge capacity retention of ∼85.6%. Moreover, the composite simultaneously acts as the anode material and the current collector, and the corrosion phenomenon can be greatly reduced compared to metallic Al anode. Thus, this work represents a significant step forward for practical safe, low-cost and high working voltage dual-ion batteries, showing attractive potential for future energy storage application .
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
IONICS
·
2019
·Vol. 25
·期 11
·5485-5494
·
IF 2.289
Wang Xiaoqing,Tian Songran,Zhang Xiaoqing,Li Guoyan,Liu Ying,Chen Botao,Cheng Bowen
A 3D Ni 3 S 2 @Mn-Co-OH/NF cross-linked nanosheet heterostructure composite electrode has been successfully fabricated by a facile two-step hydrothermal method. The as-prepared Ni 3 S 2 @Mn-Co-OH/NF composite electrode exhibits a high capacitance (3163 F g −1 at a current density of 3 mA cm −2 ), a superior rate performance (2071 F g −1 at a current rate of 30 mA cm −2 ), and stable cycling property (maintaining 96.6% of the initial capacitance after 4000 cycles at a current rate of 10 mA cm −2 ). This excellent electrochemical performance can be ascribed to the unique cross-linked nanosheet heterostructure formed directly on Ni foam current collector and the synergistic effect between Mn-Co-OH and Ni 3 S 2 of the composite electrode.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Dawei Zhang,Lijuan Jiang,Yiyi Liu,Lijun Qiu,Jinming Zhang,Dingsheng Yuan
In order to solve the problem of large overpotential in water electrolysis for hydrogen production , transition metal sulfides are promising bifunctional electrocatalysts for hydrogen evolution reaction/oxygen evolution reaction that can significantly reduce overpotential. In this work, Ni 3 S 2 and amorphous MoS x nanorods directly grown on Ni foam (Ni 3 S 2 -MoS x /NF) were prepared via one-step solvothermal process, which were used as a high-efficient electrocatalyst for overall water splitting. The Ni 3 S 2 -MoS x /NF composite exhibits very low overpotentials of 65 and 312 mV to reach 10 mA cm −2 and 50 mA cm −2 in 1.0 M KOH for HER and OER, respectively. Besides, it exhibits a low Tafel slope (81 mV dec −1 for HER, 103 mV dec −1 for OER), high exchange current density (1.51 mA cm −2 for HER, 0.26 mA cm −2 for OER), and remarkable long-term cycle stability. This work provides new perspective for further the development of highly effective non-noble-metal materials in the energy field.
研究领域:
材料科学
·
电化学
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高影响因子
危险品化学品经营许可证（带存储）