Whats the difference between li-ion and li-polymer?
In terms technologies, their main difference is in battery packaging. Their positive and negative electrodes have similar chemical composition. Li-ion technology uses metal enclosure to limit the expansion of chemical materials over the battery’s life. Li-polymer uses polymer fibers to tie the chemical materials together. So it can use soft materials for enclosure, such as plastic or aluminum foil. For a thickness of 3mm or less, li-polymer has advantage in capacity. For a thickness more than 3mm, li-ion has more advantages, especially in price.
