High Surface Area Stainless Steel Brushes as Cathodes in Microbial Electrolysis Cells

2009 ◽  
Vol 43 (6) ◽  
pp. 2179-2183 ◽  
Author(s):  
Douglas F. Call ◽  
Matthew D. Merrill ◽  
Bruce E. Logan
Keyword(s):  
Stainless Steel ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Microbial Electrolysis Cells ◽  
Electrolysis Cells ◽  
Microbial Electrolysis

scholarly journals Synthesis of high surface area TiO2 coatings on stainless steel by electrophoretic deposition

2013 ◽  
Vol 28 (15) ◽  
pp. 2023-2030 ◽  
Author(s):  
Daniel Schiemann ◽  
Pierre Alphonse ◽  
Pierre-Louis Taberna
Keyword(s):  
Stainless Steel ◽  
Surface Area ◽  
Electrophoretic Deposition ◽  
High Surface ◽  
High Surface Area ◽  
Tio2 Coatings ◽  
Image Position

Abstract

Preparation of 1-D Nanostructured Tungsten Oxide Thin Film on Wire Mesh by Flame Vapor Deposition Process

2020 ◽  
Vol 20 (7) ◽  
pp. 4517-4520
Author(s):  
Sang-Hyeok Yoon ◽  
Kyo-Seon Kim
Keyword(s):  
Thin Film ◽  
Stainless Steel ◽  
Tungsten Oxide ◽  
Surface Area ◽  
Vapor Deposition ◽  
High Surface ◽  
High Surface Area ◽  
Wire Mesh ◽  
Oxide Thin Film ◽  
Process Conditions

Flame vapor deposition (FVD) process can be used to prepare the tungsten oxide thin film which has photocatalytic activity at visible light. The FVD process is fast and economical to prepare thin film on substrate comparing to other processes. Various nanostructured thin films could be easily prepared by controlling several process parameters in FVD. One-dimensional (1-D) nanostructures with high surface area also can be prepared reproducibly. The tungsten wire precursor was oxidized and vaporized in flame to be deposited onto the substrate. The nanostructure shapes can be adjusted by controlling nucleation and growth rates of tungsten oxide vapor on substrate. In this study, nanostructured tungsten oxide thin film was fabricated on stainless steel mesh by FVD process changing the process variables of FVD. We found that proper selection of suitable process conditions in FVD was quite important for the 1-D nanostructure growth on stainless steel wire mesh with high surface area, which is quite important for photocatalytic application.

scholarly journals Feasibility of Using Electrodes with Ultralow Pt Loading in Two-Chamber Microbial Electrolysis Cells

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7752
Author(s):  
Eunjin Jwa ◽  
Mijin Kim ◽  
Ji-Hyung Han ◽  
Namjo Jeong ◽  
Hyun-Chul Kim ◽  
...  
Keyword(s):  
Surface Area ◽  
Pt Catalyst ◽  
Wire Electrode ◽  
Disk Electrode ◽  
Microbial Electrolysis Cells ◽  
Electrolysis Cells ◽  
Current Densities ◽  
The Wire ◽  
Microbial Electrolysis ◽  
Substrate Concentrations

Decreasing the Pt loading and surface area of the cathode was found to accelerate the hydrogen evolution reaction in microbial electrolysis cells (MEC) at low substrate concentrations. The experimental wire cathode used in this study had a reduced Pt loading of 20 µg Pt/cm2 and only 14% of the surface area of the control disk-type cathode. With the wire cathodes, peak current densities of 33.1 ± 2.3 A/m2 to 30.4 ± 0.5 A/m2 were obtained at substrate concentrations of 0.4 g/L and 1.0 g/L, respectively, which were 5.4 to 6.2 times higher than those obtained with the disk electrode (5.1–5.7 A/m2). The higher cathode overpotentials and higher current densities obtained with the wire electrode compared to those observed with the disk electrode were advantageous for hydrogen recovery, energy recovery efficiencies, and the hydrogen volume produced (8.5 ± 1.2 mL at 0.4 g/L to 23.0 ± 2.2 mL at 1.0 g/L with the wire electrode; 6.8 ± 0.4 mL at 0.4 g/L to 21.8 ± 2.2 mL at 1.0 g/L with the disk electrode). Therefore, the wire electrode, which used only 0.6% of the Pt catalyst amount in typical disk-type electrodes (0.5 mg Pt/cm2), was effective at various substrate concentrations. The results of this study are very promising because the capital cost of the MEC reactors can be greatly reduced if the wire-type electrodes with ultralow Pt loading are utilized in field applications.

Manufacturing and Oxidation Property of Steel and Ti Metal Fibers

2005 ◽  
Vol 475-479 ◽  
pp. 273-276
Author(s):  
Dong Bok Lee ◽  
T.H. Kim ◽  
J.H. Ko
Keyword(s):  
Stainless Steel ◽  
Melting Point ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Steel Fibers ◽  
The Core ◽  
Steel Wires ◽  
Sheath Material

Stainless steel and Ti metal fibers having a diameter of 3 µm were produced from wires by multiple extrusions. The suitable sheath coating for stainless steel to extrude the core wires to fibers was the Cu coating having ~30 µm thickness. Zinc was not a suitable sheath coating, because Zn of the low melting point had diffused into the stainless steel wires during extrusion. The oxidation of stainless steel fibers produced using the Cu sheath coating oxidized rapidly above 750°C due to the high surface area of fibers. The utilization of the Cu coating as a sheath material to extrude the core Ti wires to fibers was not possible, because the highly reactive Ti wires resisted deforming to fibers.

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