Vim nws cov kev siv tshwj xeeb, tam sim no cov ntaub ntawv txhuas txhuas muaj cov kev cai nruj heev ntawm nws cov kev ntsuas ntau yam. Nws yog tus thawj coj hauv tsev neeg aluminium foil. Qee qhov kev xav tau tshwj xeeb yog raws li hauv qab no:
Cov teeb meem txawv teb chaws: cov roj teeb lithium yuav tsum muaj kev nyab xeeb siab thaum siv, yog li cov khoom txawv teb chaws ( impurities) ntawm qhov chaw yuav tsum tau tswj nruj me ntsis. Yog tias tsis muaj kev tswj xyuas cov teeb meem txawv teb chaws, nws tsis tuaj yeem siv los ua cov ntawv ci roj teeb uas tsim nyog. Cov khoom txawv teb chaws tuaj yeem yog txhuas hmoov lossis cov khoom sib nqus (hlau hmoov), thiab lwm yam. Tag nrho cov txheej txheem tsim khoom yuav tsum muaj kev tiv thaiv kom txo tau qhov kev nthuav qhia txawv teb chaws. Nyob rau hauv cov txheej txheem ntawm cov khoom tiav, ib lub cuab yeej los kuaj xyuas cov khoom txawv teb chaws yuav tsum tau teeb tsa thiab ntsuas kom raug. Cov teeb meem txawv teb chaws yuav tsum tsawg dua lossis sib npaug li 50mg / 300,000m2.
