Brass Cathode

A brass cathode is an electrode made from brass, a copper-zinc alloy, that serves as the site of reduction in an electrochemical cell. When an external circuit supplies electrons to the cathode, dissolved metal cations can gain those electrons and form a metallic coating on its surface, while the brass provides a conductive support. In chemistry, brass cathodes are used in electroplating and electrodeposition studies to examine coating formation, surface appearance, adhesion, and mass changes. Their behavior also helps connect alloy composition, solution chemistry, current, and applied potential with practical control of metal recovery and protective finishes.

Brass Cathode - Related Videos

Research

JoVE Journal - Engineering

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

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Cited by 7 •

2014

A method of fabricating, in ambient conditions, organic photovoltaic tandem devices in a parallel configuration is presented. These devices feature an air-processed, semi-transparent, carbon nanotube common cathode.

Education

JoVE Lab Manual - Chemistry

Electrolytic Cells - Student Protocol

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2020

Source: Smaa Koraym at Johns Hopkins University, MD, USA Electrolytic CellsExpand In this experiment, you will be assembling an electrolytic cell to perform electroplating. An electrolytic cell contains an anode and cathode connected by a power source, which drives the nonspontaneous redox reaction in the cell. When the anode material is oxidized, the ions travel to the cathode, where they are reduced and plated. In the case of this experiment, the electrolytic cell contains a copper anode...

Electrolytic Cells - Concepts

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2020

Electrochemistry Electrochemistry is a branch of chemistry that describes and measures the relationship between electrical energy and a chemical change. Electrochemical reactions involve the movement of electrons from one species to another. If the reaction is spontaneous, it can result in a generated current. If the reaction is not spontaneous, it can be driven by the application of current. In electrochemistry, the key reaction is the oxidation-reduction reaction, called a redox reaction. The...

Enhanced Electron Injection and Exciton Confinement for Pure Blue Quantum-Dot Light-Emitting Diodes by Introducing Partially Oxidized Aluminum Cathode

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Cited by 2 •

2018

A protocol is presented for fabricating high-performance, pure blue ZnCdS/ZnS-based quantum dots light-emitting diodes by employing an autoxidized aluminum cathode.

Establishing a Mouse Model of Burn Infections with Pathogenic Bacteria

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2026

Source: Wang, Y., et al. In Vivo Investigation of Antimicrobial Blue Light Therapy for Multidrug-resistant Acinetobacter baumannii Burn Infections Using Bioluminescence Imaging. J. Vis. Exp. (2017)This video demonstrates how to establish a burn infection in a mouse model by applying a heated brass block followed by pathogenic bacterial inoculum. The bacteria colonize the exposed extracellular matrix and form a biofilm, enabling in vivo studies of host-pathogen interactions.

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