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Remarkably enhanced water splitting activity of nickel foam due to simple immersion in a ferric nitrate solution

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Nano Research 2018年第8期11卷 3959-3971页

作者： Huajie Yin Lixue Jiang Porun Liu Mohammad AI-Mamun Yun Wang Yu Lin Zhong Huagui Yang Dan Wang Zhiyong Tang Huijun Zhao Centre for Clean Environment and Energy Gfiffith University Gold Coast Campus Queensland 4222 Australia Centre for Environmental and Energy Nanomaterials Institute of Solid State Physics Chinese Academy of Sciences Hefei 23003 China Huajie Yin and Lixue Jiang contributed equally to this work.

The development of a facile method to construct a high-performance electrode is of paramount importance to the application of alkaline water electrolysis. Here, we report that the activity of nickel foam （NF） towards the oxygen evolution reaction （OER） can be enhanced remarkably through simple immersion in a ferric nitrate （Fe（NOs）s） solution at room temperature. During this immersion process, the oxidation of the NF surface by NOs- ions increases the near-surface concentrations of OH- and Ni2＋, which results in the in situ deposition of a highly active amorphous Ni-Fe hydroxide （a-NiFeOxHy） layer. Specifically the OER overpotential of the NF electrode decreases from 371 mV （bare NF） to 270 mV （@10 mA-cm-2 in 0.1 M KOH） after immersion in a 20 mM Fe（NOs）s solution for just I min. A longer immersion time results in further increased OER activity （196 mV@10 mA,cm-2 in 1 M KOH）. The overall water splitting properties of the a-NiFeOxHy@NF electrode were evaluated using a two-electrode configuration. It is worth noting that the current density can reach 25 ***-2 in 6 M KOH at an applied voltage of 1.5 V at room temperature.

关键词： oxygen evolution reaction water electrolysis corrosion hydroxide nickel foam

Electrochemical capacitors based on the composite of graphene and nickel foam

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Science China Chemistry 2016年第4期59卷 405-411页

作者： Songwei Li Min Wang Yongfu Lian Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education School of Chemistry and Materials Science Heilongjiang University

An improved Hummers method was developed for the simple and efficient production of high-quality graphene oxide （GO）, and the composite of GO and nickel foam （NF）（GO/NF） was fabricated by ultrasonication-vacuum-assisted deposition of an aqueous solution of GO on NF. After chemical or thermal reduction, the composite of reduced GO and nickel foam （rGO/NF） was obtained. The electrochemical capacitance performance of rGO/NF was investigated using cyclic voltammetry and gal- vanostatic charge/discharge measurements. The chemically reduced rGO/NF composite （C-rGO/NF） exhibited high specific capacitance of 379 F/g at 1.0 A/g and 266.5 F/g at 10 A/g. We also prepared thermally reduced graphene oxide at 473 K in or- der to illuminate the difference in effect between the chemical and low-temperature thermal reduction methods on electro- chemical properties. The cycling performance of thermally reduced rGO/NF composite （T-rGO/NF） and C-rGO/NF had ~91% and ~95% capacitance retention after 2000 cycles in a 6 mol/L KOH electrolyte, respectively. Electrochemical experiments in- dicated that the obtained rGO/NF has very good capacitive performance and could be used as a potential application of elec- trochemical capacitors. Our work revealed high electrochemical capacitor performance of rGO/NF composite and provided a facile method of rGO/NF preparation.

关键词： electrochemical capacitor graphene oxide nickel foam reduction

Porous Cobalt Oxide@Layered Double Hydroxide Core-Shell Architectures on nickel foam as Electrode for Supercapacitor

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第4期35卷 603-610页

作者： Zhang Luojiang Hui Kwan San Department of Electrical Engineering The Hong Kong Polytechnic University School of Mathematics University of East Anglia

The high performance of an electrode relies largely on a scrupulous design of nanoarchitectures and smart hybridization of electroactive materials.A porous core-shell architecture in which one-dimensional cobalt oxide(Co_3O_4)nanowire cores are grown on nickel foam prior to the growth of layered double hydroxide(LDH)shells is *** precipitation and thermal treatment result in homogeneous forests of 70-nm diameter Co_3O_4 nanowire,which are wrapped in LDH-nanosheet-built porous covers through a liquid phase deposition *** to the unique core-shell architecture and the synergetic effects of Co_3O_4and NiAl-LDH,the obtained Co_3O_4@LDH electrode exhibits a capacitance of 1 133.3F/g at a current density of 2A/g and 688.8F/g at 20A/g(5.3F/cm^(2 )at 9.4mA/cm^(2 )and 3.2F/cm^(2 )at 94mA/cm^2),which are better than those of the individual Co_3O_***,the electrode shows excellent cycling performance with a retention rate of 90.4%after 3 000cycles at a current density of 20A/g.

关键词： core-shell cobalt oxide layered double hydroxide(LDH) nickel foam supercapacitor(SC)

Interwoven nickel(II)-dimethylglyoxime nanowires in 3D nickel foam for dendrite-free lithium deposition

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Chinese Chemical Letters 2022年第4期33卷 2165-2170页

作者： Tianyi Zhou Yanlu Mu Jianyang Wu Bing Zhong Chengkai Yang Qian Wang Wen Liu Henghui Zhou Peng Jiang CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Chemical Resource Engineering College of ChemistryBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China Institute of Energy Innovation College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China

Metal skeletons,such as nickel foam(NF) has attracted worldwide interests as stable host for lithium metal anode because of its high stability,large specific surface area and high ***,most metal skeletons have lithophobic surface and uneven current distribution that result in sporadic lithium nucleation and uncontrolled dendrites ***,we describe a sequential immersing strategy to generate interwoven nickel(Ⅱ)-dimethylglyoxime(Ni-DMG) nanowires at NF to obtain composite skeleton(NDNF),which can be used as an stable host for Li metal *** Ni-DMG has proved effective to realize uniform lithium nucleation and dendrite-free lithium *** with the three dimensional(3 D) hierarchical porous structure,the composite host shows a significantly improved coulombic efficiency(CE) than pristine commercial nickel ***,the corresponding Li‖Li symmetrical cells can run more than 700 h with low voltage hysteresis 22 mV at 1.0 mA/cm^(2),and Li@NDNF‖LiFePO;full-cell exhibits a high capacity retention of 82.03% at 1.0 C during 630 *** results proved the effectiveness of metal-organic complexes in governing Li metal growth and can be employed as a new strategy for dendrite-free Li metal anode and safe Li metal batteries(LMBs).

关键词： nickel(II)-dimethylglyoxime nickel foam Metal-organic complex Uniform nucleation Dendrite-free

Engineering of Self-Supported Electrocatalysts on a Three-Dimensional nickel foam Platform for Efficient Water Electrolysis

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Transactions of Tianjin University 2024年第2期30卷 103-116页

作者： Ceneng Chen Xian Wang Zijun Huang Jiahui Mo Xiaoyan Zhang Chao Peng Mohamed Khairy Junjie Ge Zhi Long Multiscale Crystal Materials Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China School of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China Chemistry Department Faculty of ScienceSohag UniversitySohâg 82524Egypt Dalian National Laboratory for Clean Energy Dalian 116023China

Economical water electrolysis requires highly active non-noble electrocatalysts to overcome the sluggish kinetics of the two half-cell reactions,oxygen evolution reaction,and hydrogen evolution *** intensive efforts have been committed to achieve a hydrogen economy,the expensive noble metal-based catalysts remain under ***,the engineering of self-supported electrocatalysts prepared using a direct growth strategy on three-dimensional(3D)nickel foam(NF)as a conductive substrate has garnered significant *** is due to the large active surface area and 3D porous network offered by these electrocatalysts,which can enhance the synergistic eff ect between the catalyst and the substrate,as well as improve electrocatalytic ***-assisted growth,microwave heating,electrodeposition,and other physical methods(i.e.,chemical vapor deposition and plasma treatment)have been applied to NF to fabricate competitive electrocatalysts with low overpotential and high *** this review,recent advancements in the development of self-supported electrocatalysts on 3D NF are ***,we provide future perspectives of self-supported electrode platforms in electrochemical water splitting.

关键词： nickel foam Water splitting Surface modification Hydrothermal method Microwave-assisted method Electrodeposition Chemical vapor deposition Plasma treatment

NiFe-based nanostructures on nickel foam as highly efficiently electrocatalysts for oxygen and hydrogen evolution reactions

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Journal of Energy Chemistry 2019年第12期28卷 39-53页

作者： Wei Zhang Daohao Li Longzhou Zhang Xilin She Dongjiang Yang State Key Laboratory of Bio-Fibers and Eco-Textiles Shandong Collaborative Innovation Center of Marine Biobased Fiber and Ecological TextileInstitute of Marine Biobased MaterialsCollege of Environment Science and EngineeringQingdao UniversityQingdao 266071ShandongChina School of Materials Science and Engineering Yunnan Key Laboratory for Micro/Nano Materials&TechnologyYunnan UniversityKunming 650091YunnanChina School of Natural Sciences and Queensland Micro-and Nanotechnology CentreGriffith UniversityNathan Campus 4111Australia

Water splitting,as an advanced energy conversion technology,consists of two half reactions,including oxygen evolution reaction(OER)and hydrogen evolution reaction(HER).However,the ideal electrocatalysts are noble metal based *** high cost and scarcity in earth seriously restrict the large *** Fe-based materials have attracted great attention in recent years due to their excellent catalytic properties for OER and ***,their conductivity and electrochemical stability at high current density are unsatisfactory,resulting in ineffective water splitting due to high impedance and low ***,a series of catalysts coating Ni Fe-based materials on 3 D nickel foam were found to be extremely stable under the circumstance of high current *** this review,we summarized the recent advances of NiFe-based materials on nickel foam for OER and HER,respectively,and further provided the perspectives for their future development.

关键词： Electrocatalysis NiFe compound nickel foam HER OER

Highly-dispersed iron element decorated nickel foam synthesized by an acid-free and one-pot method for enzyme-free glucose sensor

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Journal of Central South University 2021年第3期28卷 669-678页

作者： ZHANG Yin-he HUANG Su-ping XIAO Qi State Key Lab of Powder Metallurgy Central South UniversityChangsha 410083China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

The highly-dispersed iron element decorated Ni foam was prepared by simple immersion in a ferric nitrate solution at room temperature without using acid etching, and characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), EDAX spectrum(EDAX mapping) and Raman spectroscopy. The EDAX spectrum illustrated that iron element was highly-dispersed over the entire surface of nickel foam, and the Raman spectroscopy revealed that both Ni-O and Fe-O bonds were formed on the surface of the as-prepared electrode. Moreover, the iron element decorated Ni foam electrode can be used as non-enzymatic glucose sensor and it exhibits not only an ultra-wide linear concentration range of 1-18 mmol/L with an outstanding sensitivity of 1.0388 m A·mmol/(L·cm2), but also an excellent ability of stability and selectivity. Therefore, this work presents a simple yet effective approach to successfully modify Ni foam as non-enzymatic glucose sensor.

关键词： one-pot synthesis acid-free highly-dispersed iron element nickel foam non-enzymatic glucose sensor

Research of preparation of nickel foam by molten salts electro-deoxidation

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Research of preparation of nickel foam by molten salts elect...

Compressive properties and energy absorption characteristics of open-cell nickel foams

The 3rd Asian Conference on Molten Salts and Ions Liquids

作者：董云会张丽鹏于先进李德刚刘品张菲菲 School of Chemical Engineering Shandong University of Technology Wan Jie Group CO.LTD

The electro-deoxidation of porous nickel precursors in molten calcium chlorides was *** powder mixtures of NiO powder with methylcellulose or graphite powders were compacted into pellets and sintered at 1173 *** this experimental condition,the pore-forming material in the sample could be completely removed in the process of *** foams were deoxidized in a molten system of CaCl-NaCl at 1073 K with sintered NiO as cathode and graphite as *** the experimental process,the free oxygen ions were released in the electro-deoxidation steps catalyzed by *** products were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS).It is found that the NiO cathode with 15%methylcellulose distributed uniformly after electrolysis with no flaky substance *** electrolysis is more complete,the particle distribution is well-distributed with good conductivity,high yield and more holes.

关键词： electro-deoxidation nickel foam electrochemistry rare earths

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Transactions of Nonferrous Metals Society of China 2017年第1期27卷 117-124页

作者：范素峰张涛余琨房宏杰熊汉青戴翌龙马家骥姜大越朱化龙烟台南山学院材料科学与工程系烟台265713 中南大学材料科学与工程学院长沙410083

Open-cell nickel foams with different relative densities and pre-stretching degrees were subjected to room temperature quasi-static compressive tests to explore their compressive properties. The compressive properties of the nickel foams including yield strength, elastic modulus, energy absorption density and energy absorption efficiency were calculated accurately. The results show that the compressive properties of yield strength, elastic modulus and energy absorption density increase with the increase of relative density of nickel foams. The compressive properties are sensitive to the pre-stretching degree, and the values of yield strength, elastic modulus and energy absorption density decrease with the increase of pre-stretching degree. However, the energy absorption efficiency at the densification strain state exhibits the independence of relative density and pre-stretching degree. The value of energy absorption efficiency reaches its peak when the strain is at the end of the collapse plateau region.

关键词： nickel foam compressive property relative density pre-stretching degree