Phofo ea li-ion tse mpe ke mofuta oa diminerale tse kopantsoeng tse entsoeng ka maiketsetso kapa tse aroloang ke batho ka mokhoa oa ho hlahisa li-ion tse mpe tlhahong. Ka kakaretso ke phofo ea tourmaline + likarolo tsa lanthanide kapa likarolo tsa rare earth. Karolo ea likarolo tsa rare earth e kholo haholo ho feta ea phofo ea tourmaline le likarolo tsa rare earth. E baloa ka ho feta 60%.

Phofo ea rona ea ion negative e ka lokolla mahlaseli a ion negative le a infrared a hole, bophelo bo botle le tlhaho.