Designing and optimizing a stirring system for a cold model of a lithium electrolysis cell based on CFD simulations and optical experiments

RSC Advances ◽  
2015 ◽  
Vol 5 (103) ◽  
pp. 84503-84516 ◽  
Author(s):  
Ze Sun ◽  
Haiou Ni ◽  
Hang Chen ◽  
Suzhen Li ◽  
Guimin Lu ◽  
...  
Keyword(s):  
Electrolysis Cell ◽  
Lithium Metal ◽  
Cold Model ◽  
Cfd Simulations ◽  
Model Experiments ◽  
Electrolysis Cells

A new stirring system to separate lithium metal and chloride gas in lithium electrolysis cells has been designed and applied in cold model experiments.

scholarly journals Sustainable Syntheses and Sources of Nanomaterials for Microbial Fuel/Electrolysis Cell Applications: An Overview of Recent Progress

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1221
Author(s):  
Domenico Frattini ◽  
Gopalu Karunakaran ◽  
Eun-Bum Cho ◽  
Yongchai Kwon
Keyword(s):  
Microbial Fuel Cells ◽  
Noble Metals ◽  
Raw Materials ◽  
Nanoparticle Synthesis ◽  
Economic Feasibility ◽  
Electrolysis Cell ◽  
Microbial Electrolysis Cells ◽  
Electrolysis Cells ◽  
Bioenergy Generation ◽  
Valuable Compounds

The use of microbial fuel cells (MFCs) is quickly spreading in the fields of bioenergy generation and wastewater treatment, as well as in the biosynthesis of valuable compounds for microbial electrolysis cells (MECs). MFCs and MECs have not been able to penetrate the market as economic feasibility is lost when their performances are boosted by nanomaterials. The nanoparticles used to realize or decorate the components (electrodes or the membrane) have expensive processing, purification, and raw resource costs. In recent decades, many studies have approached the problem of finding green synthesis routes and cheap sources for the most common nanoparticles employed in MFCs and MECs. These nanoparticles are essentially made of carbon, noble metals, and non-noble metals, together with a few other few doping elements. In this review, the most recent findings regarding the sustainable preparation of nanoparticles, in terms of syntheses and sources, are collected, commented, and proposed for applications in MFC and MEC devices. The use of naturally occurring, recycled, and alternative raw materials for nanoparticle synthesis is showcased in detail here. Several examples of how these naturally derived or sustainable nanoparticles have been employed in microbial devices are also examined. The results demonstrate that this approach is valuable and could represent a solid alternative to the expensive use of commercial nanoparticles.

Comparison of Experimental Towing Test and CFD Analysis of a Bare Hull Model on the Surface

2021 ◽  
Vol 163 (A3) ◽  
Author(s):  
Thu Han Tun ◽  
Ye Thet Htun ◽  
Aung Khaing Min
Keyword(s):  
Model Test ◽  
Surface Resistance ◽  
Surface Condition ◽  
Wave Formation ◽  
Complex Nature ◽  
Cfd Analysis ◽  
Cfd Simulations ◽  
Hull Form ◽  
Model Experiments ◽  
Key Aspects

In designing submarines, hull form selection, resistance, and powering are key aspects. The bare hull form of a submarine can be considered according to five parameters. Surface resistance is important should it be necessary to operate at relatively high Froude Numbers. Due to the complex nature of the flow around the hull, model experiments are still the most reliable approach to determining surface resistance. CFD simulations enable surface condition analysis using FINEMarine. The towing mechanism must be taken into account and so this was designed to fix the pitch motion and measure the hydrodynamic forces. This paper outlines the towing method, comparing the model test and the CFD results, as well as providing a comparison of wave formation from the towing test and the CFD results. The results show that resistance increased significantly above a model speed of 1.4 m/s. Furthermore, above this speed, as the resistance of the model rose, the downforce gradually decreased.

Intermediate-temperature solid oxide electrolysis cells with thin proton-conducting electrolyte and a robust air electrode

2017 ◽  
Vol 5 (44) ◽  
pp. 22945-22951 ◽  
Author(s):  
Libin Lei ◽  
Zetian Tao ◽  
Xiaoming Wang ◽  
John P. Lemmon ◽  
Fanglin Chen
Keyword(s):  
Electrical Energy ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Chemical Energy ◽  
Electrolysis Cell ◽  
Proton Conducting ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Solid Oxide Electrolysis Cells

A proton-conducting solid oxide electrolysis cell (H-SOEC) is a promising device that efficiently converts electrical energy to chemical energy.

Power-to-gas systems utilizing methanation reaction in solid oxide electrolysis cell cathodes: a model-based study

2020 ◽  
Vol 4 (6) ◽  
pp. 2691-2706
Author(s):  
Naoya Fujiwara ◽  
Shohei Tada ◽  
Ryuji Kikuchi
Keyword(s):  
Solid Oxide ◽  
Electrolysis Cell ◽  
Direct Power ◽  
Electrolysis Cells ◽  
Gas System ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Power To Gas ◽  
Solid Oxide Electrolysis Cells ◽  
Cell Cathodes

A novel direct power-to-gas system utilizing solid oxide electrolysis cells was modelled and evaluated to clarify its potential advantages.

scholarly journals The application features of the modified graphitized carbon lining materials in the alumina electrolysis cell

2018 ◽  
pp. 56-65
Author(s):  
A. V. Saitov ◽  
V. Yu. Bazhin
Keyword(s):  
Diffusion Activation Energy ◽  
Bottom Surface ◽  
Electrolysis Cell ◽  
Preliminary Treatment ◽  
Graphitized Carbon ◽  
Electrolysis Cells ◽  
Lithium Vapor ◽  
Protection Technology ◽  
Sodium Diffusion ◽  
Sodium Penetration

It was studied how Sodium penetrates inside the samples of the Lithium-modified graphitized carbon material (GCM). The Sodium diffusion coefficients were defined after the GCM's treatment by the Lithium vapor and the diffusion activation energy was calculated for different conditions. The obtained kinetic dependencies allowed to establish the mechanism of Sodium diffusion into the modified GCM. It was shown to be reasonable to expose the GCM's samples to the preliminary treatment by the Lithium vapor which prevents the destruction of the alumina electrolysis cells' cathode surface's lining layers and thus increases its service life. As the tested GCM's samples demonstrated, the possibility was achieved to develop the protection technology of the bottom surface of the Sodium penetration in course of the electrolysis in the alumina-cryolite melts.

scholarly journals Cold Model Experiments on the Dynamic Behavior of Bubbles Rising in Highly Viscous Liquid

1992 ◽  
Vol 78 (9) ◽  
pp. 1456-1463 ◽  
Author(s):  
Manabu IGUCHI ◽  
Akira KAWAJIRI ◽  
Hiroshi TOMIDA ◽  
Zen-ichiro MORITA
Keyword(s):  
Dynamic Behavior ◽  
Viscous Liquid ◽  
Cold Model ◽  
Model Experiments

13 Electrochemistry in Laboratory Flow Systems

2022 ◽  
Author(s):  
A. A. Folgueiras-Amador ◽  
J. W. Hodgson ◽  
R. C. D. Brown
Keyword(s):  
Mass Transport ◽  
Parallel Plate ◽  
Electrolysis Cell ◽  
Flow Reactors ◽  
Flow Cells ◽  
Electrochemical Processes ◽  
Electrolysis Cells ◽  
Plane Parallel Plate ◽  
Rotating Electrodes ◽  
Enhance Mass

Organic electrosynthesis in flow reactors is an area of increasing interest, with efficient mass transport and high electrode area to reactor volume present in many flow electrolysis cell designs facilitating higher rates of production with high selectivity. The controlled reaction environment available in flow cells also offers opportunities to develop new electrochemical processes. In this chapter, various types of electrochemical flow cells are reviewed in the context of laboratory synthesis, paying particular attention to how the different reactor environments impact upon the electrochemical processes, and the factors responsible for good cell performance. Coverage includes well-established plane-parallel-plate designs, reactors with small interelectrode gaps, extended-channel electrolysis cells, and highly sophisticated designs with rapidly rotating electrodes to enhance mass transport. In each case, illustrative electrosyntheses are presented.

Hierarchically ordered porous Ni-based cathode-supported solid oxide electrolysis cells for stable CO2 electrolysis without safe gas

2017 ◽  
Vol 5 (46) ◽  
pp. 24098-24102 ◽  
Author(s):  
Dehua Dong ◽  
Shanshan Xu ◽  
Xin Shao ◽  
Leigh Hucker ◽  
Justin Marin ◽  
...  
Keyword(s):  
Solid Oxide ◽  
Electrolysis Cell ◽  
Electrolysis Cells ◽  
Solid Oxide Electrolysis ◽  
Solid Oxide Electrolysis Cell ◽  
Solid Oxide Electrolysis Cells ◽  
Co2 Electrolysis ◽  
Ordered Porous

This study reported a hierarchically ordered porous Ni-based cathode of a solid oxide electrolysis cell to realise stable CO2 electrolysis without the need for safe gas.

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