Preparation and electrochemical properties of Al/TiB2/β-PbO2 layered composite electrode materials for electrowinning of nonferrous metals

Abstract In this paper, Pb-63%Sn alloy was selected as an intermediate layer to plate on Q235 steel by the hot dipping method, and then the hot-dipped steel and the lead plate were welded by roll-bonding technology to prepare the lead-steel layered composite electrode materials. Scanning electron microscopy (SEM), Energy dispersion spectrum (EDS) and X-ray diffraction (XRD) were used to characterize the interface morphology and phase composition of samples, and the interface formation mechanism was also discussed. The electrochemical properties of the lead-steel layered composite electrode under different rolling reduction ratio were studied by linear sweep voltammetry (LSV), Tafel polarization curves (Tafel) and weight-loss method. Subsequently, the prepared lead-steel layered composite electrodes were applied to the industrial production experiment for adiponitrile. The results indicated that lead-steel layered composite electrodes with excellent electrochemical properties were successfully prepared by hot dipping and roll-bonding technology. Analysis of microstructure and phase composition showed that the metallurgical bond of hot-dipped steel and lead plate could be achieved by the process of rolling, and the fracture feature was ductile fracture. And the conductivity, electrocatalytic activity and corrosion resistant of lead-steel layered composite electrode material were improved with the increase of rolling reduction ratio. The industrial production results showed that, compared with the traditional Pb-0.6%Ag electrode, the prepared lead-steel layered composite electrode at the rolling reduction ratio of 40% exhibited the best industrial performance, the current efficiency was increased by 4.94%, the average cell voltage was reduced by 19.4%, and the adiponectin yield was increased by 4.86%.

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Preparation and Electrochemical Properties of Functionalized Graphene/Polyaniline Composite Electrode Materials

Acta Physico-Chimica Sinica ◽

10.3866/pku.whxb201406162 ◽

2014 ◽

Vol 30 (9) ◽

pp. 1659-1666 ◽

Cited By ~ 2

Author(s):

WANG Li-Li ◽

◽

XING Rui-Guang ◽

ZHANG Bang-Wen ◽

HOU Yuan

Keyword(s):

Electrochemical Properties ◽

Composite Electrode ◽

Electrode Materials ◽

Functionalized Graphene

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Preparation of Li2S-FeS2 Composite Electrode Materials and their Electrochemical Properties

Journal of the Japan Society of Powder and Powder Metallurgy ◽

10.2497/jjspm.60.13 ◽

2013 ◽

Vol 60 (1) ◽

pp. 13-18 ◽

Cited By ~ 1

Author(s):

Tomonari TAKEUCHI ◽

Hiroyuki KAGEYAMA ◽

Koji NAKANISHI ◽

Toshiaki OHTA ◽

Atsushi SAKUDA ◽

...

Keyword(s):

Electrochemical Properties ◽

Composite Electrode ◽

Electrode Materials

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The Study of Ti-Al Layered Composite Electrode in the Anti-Gravity Casting Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.487.45 ◽

2014 ◽

Vol 487 ◽

pp. 45-49

Author(s):

Zhao Hui Han ◽

Pei Xian Zhu ◽

Xiu Qin Yang ◽

Sheng Gang Zhou

Keyword(s):

Composite Electrode ◽

Electrode Materials ◽

Mold Temperature ◽

Layered Composite ◽

Polarization Potential ◽

Casting Method ◽

Gravity Casting ◽

Metallurgical Bonding ◽

Al Composite ◽

Better Than

The structure and properties of the Ti-Al composite electrode materials prepared by the anti-gravity casting method was analyzed by SEM, EDS, four-probe method and electrochemical workstation. The results show that the metallurgical bonding of Ti and Al can be achieved by the method of anti-gravity casting with the Al temperature800°C, mold temperature of 400°C, pressure difference 0.5MPa. The electrochemical properties of the composite electrode materials is much better than pure Ti anode. Under the same condition,polarization potential of composite materials will fell by 32mV~43mV in polarization potential of pure Ti, it can be increased by 60% or more in current density, the resistivity was only 1/10 of pure Ti.

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One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Crystals ◽

10.3390/cryst12010076 ◽

2022 ◽

Vol 12 (1) ◽

pp. 76

Author(s):

Ruiyu Wang ◽

Mengfan Zhang ◽

Hao Xu ◽

Shuo Guo ◽

Mengqi Chi ◽

...

Keyword(s):

Liquid Phase ◽

Electrochemical Properties ◽

Composite Electrode ◽

Electrode Materials ◽

Specific Capacity ◽

Co3o4 Nanoparticles ◽

X Ray ◽

Plasma Electrolysis ◽

One Step ◽

Liquid Phase Plasma

In this study, a novel assisted liquid−phase plasma electrolysis was developed to realize one−step synthesis of popcorn biomass−derived porous carbon/cobalt tetroxide (popcorn−carbon/Co3O4) composites, effectively improving the structural stability and conductivity of Co3O4. The phase structure, morphologies, chemical composition, and weight ratio of the as−prepared popcorn−carbon/Co3O4 composites were systematically analyzed. The results of X−ray diffraction (XRD), Raman spectrometer, Fourier infrared spectrometer (FTIR), X−ray photoelectron spectrometer (XPS), and thermogravimetry analyzer (TG) proved the synthesis of the popcorn−carbon/Co3O4 composites. Co3O4 nanoparticles were distributed relatively uniformly on the popcorn−carbon surface. The electrochemical properties of the popcorn−carbon/Co3O4 composite electrode materials were analyzed for exploring the influence of different Co/C ratios on the electrochemical properties of composites. The results showed that the popcorn−carbon/Co3O4 composite electrode materials prepared under 200:1 mass ratio of Co(NO3)2·6H2O and popcorn−carbon possessed a specific capacitance and specific capacity of almost 1264 F/g (594 C/g) at a current density of 1 A/g, exhibiting a better electrochemical property. The efficient, fast, and novel assisted liquid−phase plasma electrolysis provides a new method for the preparation of composite electrode materials on the supercapacitors.

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The Study of the Interface Evolution and the Performance of the Ti-Al Composite Electrode Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.3135 ◽

2011 ◽

Vol 239-242 ◽

pp. 3135-3141

Author(s):

Zhao Hui Han ◽

Pei Xian Zhu ◽

Xiu Qin Yang ◽

Jian Xu

Keyword(s):

Electrochemical Properties ◽

Composite Electrode ◽

Electrode Materials ◽

Bonding Temperature ◽

Base Material ◽

Interface Evolution ◽

Preparation Conditions ◽

Metallurgical Bonding ◽

Al Composite ◽

The Cost

The Ti-Al composite electrode materials was prepared by hot press diffusion bonding in this article, and by the scanning electron microscopy (SEM), the energy dispersive spectroscopy (EDS), four-probe method, electrochemical workstation test means were used to test the structure and properties of the samples. The results show that the method of hot pressing diffusion sintering can achieve metallurgical bonding of Ti and Al with static pressure of 6MPa, holding times of 120min, in Ar and bonding temperature higher than 550°C,as well resistivity of the composite had dropped significantly, it was only 1/10 of pure Ti. The electrochemical properties of the composite electrode materials is also much better than pure Ti anode, and preparation conditions on electrochemical properties and the resistivity is consistent with law. This also shows that the conductivity of metal matrix will directly affect the catalytic properties of electrode materials for electrochemical. Therefore, changes in the composition of the electrode base material and structure not only reduces the cost and improve the performance of the electrode, also reached the purpose of energy saving.

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