Electrochemical in situ construction of vanadium oxide heterostructures with boosted pseudocapacitive charge storage

2020 ◽  
Vol 8 (3) ◽  
pp. 1176-1183 ◽  
Author(s):  
Ran Dong ◽  
Yu Song ◽  
Duo Yang ◽  
Hua-Yu Shi ◽  
Zengming Qin ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Vanadium Oxide ◽  
Electrochemical Deposition ◽  
Charge Storage ◽  
Deposition Method ◽  
High Quality ◽  
Oxide Heterostructures ◽  
Electrochemical Deposition Method ◽  
Enhanced Electrochemical Performance

An in situ electrochemical deposition method is demonstrated as an efficient strategy to build high-quality vanadium oxide heterostructures with enhanced electrochemical performance.

Controllable Synthesis of ZnO Nanostructures via Template-Free Electrochemical Deposition at Low Temperature and their Optical Properties

2014 ◽  
Vol 915-916 ◽  
pp. 540-544
Author(s):  
Jun Hong Duan ◽  
Jian Xing Sun
Keyword(s):  
Electrochemical Deposition ◽  
Zno Nanostructures ◽  
Deposition Method ◽  
Controllable Synthesis ◽  
High Quality ◽  
Ito Glass ◽  
Electrochemical Deposition Method ◽  
Tin Oxides ◽  
Device Applications ◽  
Template Free

We report template-free electrochemical deposition method for preparing ZnO nanostructures arrays on indium tin oxides (ITO) glass substrate. Multiform ZnO nanostructures, such as nanotubes, nanorods with tower-like tips, cone-like tips and groove-like tips, are controllably synthesized at 60 °C, which is lower compared with the prepared temperatures of reported works. The results of XRD indicate the wurtzite ZnO nanostructures are single-crystalline and grow along the c-axis perpendicularly on the substrate. These findings have potential for the growth of high-quality ZnO nanostructures arrays and device applications.

Modulating the surface states of electric field assembled CuO nanowires by electrochemical deposition method

2009 ◽  
Vol 95 (8) ◽  
pp. 083107 ◽  
Author(s):  
Lixiang Wang ◽  
Gang Cheng ◽  
Xiaohong Jiang ◽  
Shujie Wang ◽  
Xingtang Zhang ◽  
...  
Keyword(s):  
Electric Field ◽  
Electrochemical Deposition ◽  
Surface States ◽  
Deposition Method ◽  
Cuo Nanowires ◽  
Electrochemical Deposition Method

Electrochemical deposition induced continuum damage-healing framework for the cementitious composite

2021 ◽  
pp. 105678952199187
Author(s):  
Hehua Zhu ◽  
Qing Chen ◽  
J Woody Ju ◽  
Zhiguo Yan ◽  
Zhengwu Jiang
Keyword(s):  
Electrochemical Deposition ◽  
Planck Equation ◽  
Healing Time ◽  
Aqueous Environment ◽  
Continuum Damage ◽  
Deposition Method ◽  
Cementitious Composite ◽  
Current Conservation ◽  
Electrochemical Deposition Method ◽  
Damage Healing

The electrochemical deposition method is a promising approach to repair the deteriorated concrete in the aqueous environment. In this paper, a continuum damage-healing framework is presented for the electrochemical deposition method based on the multi-field coupling growth process of the electrochemical deposition products. The ion transportation and the electrode reactions are characterized by employing the Nernst-Planck equation and the current conservation equation. The level set method is adopted to capture the growth of the deposition products. Based on the deposition process, a new empirical healing law is presented, with which a new continuum damage-healing framework is presented for electrochemical deposition method. Numerical examples are conducted by applying the presented framework to the damaged cementitious composite under the tensile loadings. The presented framework is compared with the classic continuum damage-healing theory and the experimental data. The results show that the presented models can describe the electrochemical deposition method induced damage-healing for the cementitious composite. Furthermore, the effects of the healing time, the solution concentration and the external voltage on the damage-healing behaviors are investigated based on our proposed framework.

scholarly journals Preparation of Nanoparticle Porous-Structured BiVO4 Photoanodes by a New Two-Step Electrochemical Deposition Method for Water Splitting

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 136
Author(s):  
SocMan Ho-Kimura ◽  
Wasusate Soontornchaiyakul ◽  
Yuichi Yamaguchi ◽  
Akihiko Kudo
Keyword(s):  
Water Splitting ◽  
Electrochemical Deposition ◽  
Synthesis Method ◽  
Stoichiometric Ratio ◽  
Deposition Method ◽  
Hydrogen Electrode ◽  
Faradaic Efficiency ◽  
Xrd Pattern ◽  
Conversion Reaction ◽  
Electrochemical Deposition Method

In the synthesis method of a BiVO4 photoanode via BiOI flakes, a BiOI film is formed by electrochemical deposition in Step 1, and a vanadium (V) source solution is placed by drop-casting on the BiOI film in Step 2. Following this, BiVO4 particles are converted from the BiOI–(V species) precursors by annealing. However, it is challenging to evenly distribute vanadium species among the BiOI flakes. As a result, the conversion reaction to form BiVO4 does not proceed simultaneously and uniformly. To address this limitation, in Step 2, we developed a new electrochemical deposition method that allowed the even distribution of V2O5 among Bi–O–I flakes to enhance the conversion reaction uniformly. Furthermore, when lactic acid was added to the electrodeposition bath solution, BiVO4 crystals with an increased (040) peak intensity of the X-ray diffractometer (XRD) pattern were obtained. The photocurrent of the BiVO4 photoanode was 2.2 mA/cm2 at 1.23 V vs. reversible hydrogen electrode (RHE) under solar simulated light of 100 mW/cm2 illumination. The Faradaic efficiency of oxygen evolution was close to 100%. In addition, overall water splitting was performed using a Ru/SrTiO3:Rh–BiVO4 photocatalyst sheet prepared by the BiVO4 synthesis method. The corresponding hydrogen and oxygen were produced in a 2:1 stoichiometric ratio under visible light irradiation.

scholarly journals Construction of 1T@2H MoS2 heterostructures in situ from natural molybdenite with enhanced electrochemical performance for lithium-ion batteries

RSC Advances ◽  
2021 ◽  
Vol 11 (53) ◽  
pp. 33481-33489
Author(s):  
ChengLong Peng ◽  
Mingming Shi ◽  
Fei Li ◽  
Yang Wang ◽  
Xueqin Liu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Enhanced Electrochemical Performance

Natural molybdenite, an inexpensive and naturally abundant material, can be directly used as an anode material for lithium-ion batteries.

scholarly journals Enhanced electrochemical performance of α-MoO3/graphene nanocomposites prepared by an in situ microwave irradiation technique for energy storage applications

RSC Advances ◽  
2020 ◽  
Vol 10 (38) ◽  
pp. 22836-22847
Author(s):  
P. Nagaraju ◽  
M. Arivanandhan ◽  
A. Alsalme ◽  
A. Alghamdi ◽  
R. Jayavel
Keyword(s):  
Energy Storage ◽  
Microwave Irradiation ◽  
Electrochemical Performance ◽  
Graphene Sheets ◽  
Microwave Irradiation Method ◽  
Graphene Nanocomposites ◽  
One Step ◽  
Energy Storage Applications ◽  
Enhanced Electrochemical Performance

Nanoparticles of α-molybdenum oxide (α-MoO3) are directly grown on graphene sheets using a surfactant-free facile one step ultrafast in situ microwave irradiation method.

Stochastic micromechanics-based investigations for the damage healing of unsaturated concrete using electrochemical deposition method

2020 ◽  
Vol 29 (9) ◽  
pp. 1361-1378 ◽  
Author(s):  
Q Chen ◽  
HH Zhu ◽  
JW Ju ◽  
HX Li ◽  
ZW Jiang ◽  
...  
Keyword(s):  
Electrochemical Deposition ◽  
Effective Properties ◽  
Healing Process ◽  
Deposition Method ◽  
Computationally Efficient ◽  
Concrete Material ◽  
Aspect Ratios ◽  
Micro Cracks ◽  
Electrochemical Deposition Method ◽  
Damage Healing

The (micro-) cracks or (micro-) voids will lead to the damage of concrete material. A stochastic micromechanical framework is proposed to investigate the damage healing of the unsaturated concrete with the electrochemical deposition method. Stochastic micromechanical representations are presented based on the material’s random microstructures. Differential scheme-based multilevel homogenization procedures are proposed to quantitatively predict the effective properties of the repaired concrete. The probability density functions are obtained for the material’s effective properties with an efficient stochastic simulation framework, which is composed of the univariate approximation for the multivariate function, Newton interpolations and Monte Carlo simulations. Numerical examples are employed to verify the proposed stochastic micromechanical framework, which indicates that the presented framework is computationally efficient and capable of describing the electrochemical deposition method healing process for the unsaturated concrete considering the material’s inherent randomness. Finally, the influences of the saturation degrees and the equivalent aspect ratios on the probabilistic behavior of the repaired concrete are discussed on the basis of the proposed models.

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