Differences between room temperature superconductors and energy storage batteries

What would a room temperature superconductor do?

(Source: Wikimedia Commons) A room temperature superconductor would likely cause dramatic changes for energy transmission and storage. It will likely have more, indirect effects by modifying other devices that use this energy. In general, a room temperature superconductor would make appliances and electronics more efficient.

What is the difference between a battery and a supercapacitor?

Energy density: Energy density indicates the energy a device can hold relative to its mass or volume. Batteries have much higher energy densities than supercapacitors, making them appropriate for applications that require long-lasting energy storage, such as electric vehicles and renewable energy systems.

Are high-T C superconductors better than batteries?

A high-T c superconductor would allow for efficient storage (and transport) of power. Batteries are also much easier to keep refrigerated if necessary, and there are greater efficiency gains to be had. Superconducting batteries are the real energy gain from high-T c superconductors. There are, however, limits to this approach.

Would a room temperature superconductor make trains more efficient?

For the most part, they are not very popular due to their high cost. A room temperature superconductor would make the construction of these trains much easier, and would enable new, more energy efficient transport. It would also be possible to turn more mundane transit systems like subways into levitating systems.