Electrodes 🔋 🔋 ⚡️ ⚡️
As it is from my interest to know and learn about Chemistry and science (for more reference, check my Chemistry: A Truly Blue Sky blog), I visited Professor Jang Wook Choi from Seoul National University, as he tutored me about the basics of batteries and electrodes. As this is sort of my introductory blog, it is my role to summarize what I have learned from him. First, I learned that in a redox reaction, between two metals (for example, zinc and copper are placed like the image shown), when the zinc metal gives off electrons, zinc is currently being oxidized because it is giving its electrons, while copper is being oxidized, because it is receiving electrons from the zinc metal. As the image demonstrates, the one who gives off is also called an anode, and the one who receives is called cathode. The chemical reaction that happens in this instance shows that there are two independent half-reactions. Well, as the diagram shows, there are some inquiries that...