Lithium Ion roj teeb yam ntxwv

Lithium yog cov hlau me tshaj plaws thiab muaj zog tshaj plaws nyob rau hauv chemical periodic table. Me me, muaj peev xwm ceev, dav txais tos los ntawm cov neeg siv khoom thiab engineers. Txawm li cas los xij, yog tias cov khoom siv tshuaj muaj zog heev, nws yuav ua rau muaj kev pheej hmoo siab. Thaum cov hlau lithium raug rau saum huab cua, nws yuav tsim cov tshuaj tiv thaiv oxidation hnyav nrog oxygen thiab tawg. Txhawm rau txhim kho kev nyab xeeb thiab hluav taws xob, cov kws tshawb fawb tau tsim cov khoom siv xws li graphite thiab lithium cobalt oxide los khaws cov lithium atoms. Cov qauv molecular ntawm cov ntaub ntawv no tsim cov nano nplai zoo cia lattice, uas tuaj yeem siv los khaws cov lithium atoms. Nyob rau hauv txoj kev no, txawm tias lub roj teeb lub plhaub tawg thiab cov pa oxygen nkag mus, cov pa oxygen molecules loj dhau los nkag mus rau cov cell me me, kom lithium atoms yuav tsis tiv nrog oxygen thiab tsis txhob tawg. Lub hauv paus ntsiab lus ntawm lithium-ion roj teeb no ua rau tib neeg ua tiav lub peev xwm siab thiab kev nyab xeeb tib lub sijhawm.

Thaum lub roj teeb lithium-ion raug them, lub lithium atom ntawm qhov zoo electrode yuav plam electrons thiab oxidize rau lithium ions. Lithium ions ua luam dej mus rau qhov tsis zoo electrode los ntawm electrolyte, nkag mus rau hauv lub cell ntawm qhov tsis zoo electrode, tau txais ib qho hluav taws xob, thiab txo rau lithium atoms. Thaum tso tawm, tag nrho cov txheej txheem yog thim rov qab. Txhawm rau tiv thaiv luv luv vim yog kev sib cuag ncaj qha ntawm qhov zoo thiab qhov tsis zoo ntawm lub roj teeb, ib daim ntawv diaphragm uas muaj ntau qhov zoo yuav raug ntxiv rau hauv lub roj teeb kom tiv thaiv luv luv. Daim ntawv diaphragm zoo kuj tseem tuaj yeem kaw qhov pores thaum lub roj teeb kub siab dhau lawm, kom lithium ions tsis tuaj yeem hla dhau, kom pov tseg kev sib ntaus sib tua thiab tiv thaiv kev phom sij.