Why are salt water batteries not used more to generate electricity on a larger scale? Putting 2 metal electrodes in salt water (like an ocean or sea?) seems so simple and inexpensive.
![How to make a salt water Rechargeable battery at home, नमक ओर पानी से बैटेरी बनाये! water battery / - YouTube How to make a salt water Rechargeable battery at home, नमक ओर पानी से बैटेरी बनाये! water battery / - YouTube](https://i.ytimg.com/vi/ARhqjnjrSgc/hq720.jpg?sqp=-oaymwEhCK4FEIIDSFryq4qpAxMIARUAAAAAGAElAADIQj0AgKJD&rs=AOn4CLCNRch3QCOvRfXSXIrk4-8TFjJHlQ)
How to make a salt water Rechargeable battery at home, नमक ओर पानी से बैटेरी बनाये! water battery / - YouTube
![Schematic illustration of the designed seawater desalination battery... | Download Scientific Diagram Schematic illustration of the designed seawater desalination battery... | Download Scientific Diagram](https://www.researchgate.net/publication/324760286/figure/fig1/AS:622644110061568@1525461332519/Schematic-illustration-of-the-designed-seawater-desalination-battery-system-and-schematic.png)
Schematic illustration of the designed seawater desalination battery... | Download Scientific Diagram
![Homemade massive rechargeable battery. Output is 1.2 v 1.25 amps. (I know it looks like a bomb) : r/batteries Homemade massive rechargeable battery. Output is 1.2 v 1.25 amps. (I know it looks like a bomb) : r/batteries](https://i.redd.it/g2dvkm749ee11.jpg)