Cathode materials

Ebook "Nanomaterials for fuel cell catalysis" provide an authoritative source of information on the use of electrochemical fuel cells, and in particular discuss the use of nanomaterials to enhance the performance of existing energy systems. The book covers the state of the art in the design, preparation, and engineering of nanoscale functional materials as effective catalysts for fuel cell chemistry, highlights recent progress in electrocatalysis at both fuel cell anode and cathode, and details perspectives and challenges in future research.

583p tracanhphuonghoa1007 22-04-2024 6 3   Download

Ebook "Direct alcohol fuel cells: Materials, performance, durability and applications" begins with an introductory overview of direct alcohol fuel cells (DAFC); it focuses on the main goals and challenges in the areas of materials development, performance, and commercialization. The preparation and the properties of the anodic catalysts used for the oxidation of methanol, higher alcohols, and alcohol tolerant cathodes are then described.

377p tudohanhtau1006 29-03-2024 2 1   Download

Ebok "Lithium-ion batteries: Science and technologies" contains an in-depth review of electrode materials, electrolytes and additives for LIB, as well as indicators of the future directions for continued maturation of the LIB. In developing electrochemical cells, one must keep in mind that the real goal is to package and control all the materials and components (cathode and anode active materials, electrolytes, separators, current collectors etc.) in a limited volume to enable maximum energy storage without creating any safety problems.

460p manmanthanhla0201 26-02-2024 2 1   Download

In this article, zinc-doped sodium manganese oxide (NZMC) was synthesized by a conventional solid-state reaction method. Structure and morphology of the NZMC material were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energydispersive X-ray spectroscopy (EDS).

10p viengels 25-08-2023 9 3   Download

Continued part 1, part 2 of ebook "Fundamentals of corrosion: Mechanisms, causes, and preventative methods" provides readers with contents including: Chapter 7 - Corrosion of paint; Chapter 8 - Corrosion of metallic coatings; Chapter 9 - Cathodic protection; Chapter 10 - Corrosion inhibitors; Chapter 11 - The equipment design process;...

209p hanlinhchi 29-08-2023 11 4   Download

Small polarons are quasi-particles in materials formed by a charge carrier and its self-induced distortion. In cathode materials containing transition metal elements, small polarons play an important role in the diffusion of charge carriers. In order to grasp the fundamentals of small polarons inside cathodes, we highlight the recent progress from both experiments and simulations focusing on the formation of small polarons and their migration.

13p viberbers 09-08-2023 7 3   Download

The high capacity electrode material design with rapid charging/discharging and long life capability has become a critical issue and main concern in recent years. Nickel oxide (NiO) has received much attention in the field of energy storage as a cathode electrode material owing to its layered structure with large spacing, crystal structure, and high specific surface area.

10p viberbers 09-08-2023 4 3   Download

We have effectively synthesized ZnS, FeSe2, and their nanocomposite using a straightforward and affordable solvothermal process. We also investigated for the first time their ideal electrochemical performance for supercapacitors.

10p viberbers 09-08-2023 9 3   Download

The reduction of carbon dioxide (CO2) to products electrochemically (RCPE) in 0.5 M NaHCO3 and Na2CO3 liquid phase electrolyte solutions was investigated. Cobalt oxide (Co3O4) as anode and cuprous oxide (Cu2O) as the cathode were considered, respectively. The impacts of applied potential with time of reaction during reduction of CO2 to products were studied.

7p viberbers 09-08-2023 9 3   Download

The simultaneous study on photoelectrochemical CO2 reduction with Brilliant Green (BG) dye removal was studied in the present work. Experimental studies were done in aqueous solutions of sodium and potassium based electrolytes using a cathode [Zinc (Zn) and Tin (Sn)] and a common cobalt oxide (Co3O4) anode electrocatalyst.

6p viberbers 09-08-2023 11 3   Download

In this work, NaNi0.5Ti0.5O2 cathode materials of sodium ion batteries were synthesized by a pre-milling combined with solid-state reaction method using sodium hydroxide (NaOH), nickel (II) acetate (2(CH3COO)Ni.4H2O), and titanium dioxide (TiO2) as the precursors.

8p viberkshire 09-08-2023 6 4   Download

Based on the density functional theory, we propose a promising cathode material, Na2Fe3(SO4)4, applicable for sodium-ion batteries. The crystal structure, stability, average voltage, and diffusion mechanism are carefully investigated to evaluate the electrochemical properties.

9p vispiderman 15-06-2023 3 2   Download

Recently, rechargeable aqueous Zn-ion batteries have attracted much attention and are potential candidates for grid storage applications because of their low cost and safety. However, to approach practical applications, suitable cathode materials must be developed. As a two-dimensional layered material, MoS2-based materials are very potential candidates.

4p vigeneralmotors 13-07-2022 961 5   Download

Optimization of the LiFePO4 cathode active material synthesis process in the hydrothermal method consists of many factors, including pH, carbon coating, particle size optimization, sintering and hydrothermal synthesis temperature. The main goal of this study is to determine the effect of particle size, pH and carbon coating on capacity and cycle performance. In this study, LiFePO4 cathode active materials were prepared at different pH (6.5 and 8.5) and temperature (160 and 180◦C) levels using the hydrothermal method.

12p langthannam 29-12-2021 18 1   Download

Olivine LiFePO4 has been studied for more than a decade as a promising cathode material for rechargeable lithium batteries. However, the low electric conductivity and tap density still hinder its large-scale commercialization. Micro-sized LiFePO4 is prepared by an optimized hydrothermal method in this paper. The influence of postannealing on the physicochemical properties of LiFePO4 and FePO4 is investigated to understand the plausible mechanism for performance degradation.

13p langthannam 29-12-2021 6 0   Download

This study reports the effect of vanadium on the crystal structure and electrical and electrochemical properties of La0.6−x VxSr0.4MnO3−δ (x = 0.005–0.1) perovskite-based cathode materials in solid oxide fuel cells. Crystal structure, morphology, and porosity of prepared cathode materials are characterized by X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy. Using XPS analysis it was established that the La3+ cation is exchanged by the V4+/5+ cation in the perovskite structure.

31p tudichquannguyet 29-11-2021 11 2   Download

In the past years there has been a great interest in self-doped TiO2 nanotubes (blue TiO2 nanotubes) compared to undoped ones owing to their high carrier density and conductivity. In this study, blue TiO2 nanotubes are investigated as photoanode materials for photoelectrochemical water splitting. Blue TiO2 nanotubes were fabricated with enhanced photoresponse behavior through electrochemical cathodic polarization on undoped and annealed TiO2 nanotubes.

13p tudichquannguyet 29-11-2021 10 0   Download

Nanocomposite material LiFe1-xMxPO4/Gr was successfully synthesized achieving it with single phase. It’s response required electrochemical parameters of positive electrode materials for Li-ion batteries such as: improved diffusion coefficient and conductivity, higher capacity comparative with LFP in same conditional synthesis.

28p capheviahe26 25-01-2021 18 3   Download

In this paper, Ba doped LaMnO3 nanoparticles (LBMO), a promissing material for making cathode of SOFC, were prepared by microwave combustion method. This material has many advantages. Effect of the amount fuel in the combustion reaction on the products was studied by various methods such as: X-ray diffraction measurement, scanning electron microscopy, energy dispersive Xray spectroscopy. The results showed that each doping rate requires an appropriate amount of fuel to obtain pure and crystalline product.

9p trinhthamhodang9 10-12-2020 12 1   Download

This study we attempt to (i) discover a better performing electrode material to minimize the internal resistance of the MFC, (ii) modify the anodic electrode spacing to determine a design that better supports the electrochemical activity of acting bacteria, and (iii) reduce losses during the electron transfer process (from the electron donor at the anode to the electron acceptor at the cathode) via optimization of the cathode oxygen supply rate and the external resistance using polarization analysis.

7p chauchaungayxua8 02-10-2020 17 1   Download