In the next decade, the most promising energy storage technology is likely to be solid-state batteries. To put it bluntly, it is an upgraded version of the current lithium battery, replacing the flammable liquid electrolyte with solid materials. This makes the battery safer, less likely to explode, and smaller in size, with more power storage and faster charging. Many large companies like Toyota and Samsung are working on this, with the goal of making electric cars run farther, charge faster, and even be used in mobile phones in the future. In addition to this, sodium-ion batteries and flow batteries are also very attractive, especially large-scale energy storage such as large power grids, which are cheap, long-life, and require less maintenance, but they are still a bit far from being used by ordinary people. In general, if solid-state batteries can be mass-produced and costs can be reduced, it will really be a game-changing technology. Deepora AI