I agree with your points regarding some of the current limitations of aluminum-air batteries. However, I believe they still offer great potential, especially for emergency power and off-grid applications. As you mentioned, the single-use nature is a concern, but it’s important to note that while the aluminum anode is consumed, the air electrode remains intact and can be reused, which makes the battery more sustainable over time. So, while the aluminum needs to be replaced, it’s not as wasteful as it might seem at first glance.
Regarding the electrolyte, yes, it needs to be added before use, but this process is quite simple and quick. For emergency use, it’s actually very convenient, and I don’t think most users will find it cumbersome. For applications like vehicles, as you mentioned, replacing the battery at a station could be faster than recharging an EV, and the light weight and high energy density are significant advantages in such situations.