Electrochemical energy storage

Electrochemical energy storage includes lead-acid batteries, lithium-ion batteries, sodium-sulfur batteries, and flow batteries. (1) Lead-acid battery: It is a battery whose electrode is mainly made of lead and its oxide, and the electrolyte is a sulfuric acid solution. It is widely used in the world, with a cycle life of about 1000 times, efficiency of 80%-90%, [...]