Lithium-ion bhatiri yakagadzirwa

Kuumbwa uye kudzokororwa kwe lithium-ion bhatiri

Thelithium-ion bhatiriinoumbwa neeletrolyte, separator, cathode uye anode uye kesi.

Iyo electrolytemu lithium-ion bhatiri inogona kuva gel kana polymer, kana musanganiswa wegel uye polymer.

Iyo electrolyte mumabhatiri eLi-ion inoshanda senge svikiro yekutakura maion mubhatiri.Iyo inowanzo ine lithium munyu uye organic solvents.Iyo electrolyte inoita basa rakakosha mukutakura ion pakati peiyo yakanaka uye isina kunaka maelectrode e lithium-ion bhatiri, kuve nechokwadi chekuti bhatiri rinogona kuwana yakakwira voltage uye yakakwira simba density.Iyo electrolyte inowanzo umbwa nepamusoro-kuchena organic zvinonyungudutsa, lithium electrolyte munyu uye zvinodiwa zvinowedzera zvakanyatsobatanidzwa muzvikamu zvakati pasi pemamiriro chaiwo.

Iyo cathode zvinhumhando dze lithium-ion bhatiri:

• LiCoO2
• Li2MnO3
• LiFePO4
• NCM
• NCA

 Iyo cathode zvinhu ine inodarika 30% mutengo webhatiri rese.

The anodeyebhatiri ye lithium-ion ine

Ipapo anode yerithium-ion bhatiri ine inenge 5-10 muzana yemitengo yebhatiri rese.Carbon-based anode zvinhu zvinowanzoshandiswa anode zvinhu zve lithium-ion mabhatiri.Kana ichienzaniswa neyechinyakare simbi lithium anode, ine kuchengetedzwa kwepamusoro uye kugadzikana.Carbon-based anode zvinhu zvinonyanya kubva kune zvakasikwa uye zvekugadzira graphite, kabhoni fiber uye zvimwe zvinhu.Pakati pavo, graphite ndiyo huru zvinhu, iyo ine yakakwirira chaiyo nzvimbo uye magetsi conductivity, uye kabhoni zvinhu zvakare zvine yakanaka kugadzikana kwemakemikari uye kudzokorodza zvakare.Nekudaro, huwandu hwekabhoni-based negative electrode zvinhu zvakaderera, izvo zvisingakwanisi kuzadzisa zvinodiwa zvemamwe maapplication epamusoro kugona.Naizvozvo, pari zvino kune dzimwe tsvakiridzo pazvinhu zvitsva zvekabhoni uye zvinhu zvinoumbwa, vachitarisira kuenderera mberi nekuvandudza kugona uye kutenderera hupenyu hwekabhoni-yakavakirwa negative electrode zvinhu.

Ichiri nesilicon-carbon negtive electrode zvinhu.Silicon (Si) zvinhu: Kana ichienzaniswa neyakajairwa kabhoni negative electrode, silicon negative electrode ine yakakwirira chaiyo kugona uye simba density.Nekudaro, nekuda kwehukuru hwekuwedzera kweiyo silicon zvinhu, zviri nyore kukonzera kuwanda kwevhoriyamu ye electrode, nekudaro kupfupisa hupenyu hwebhatiri.

Muparadziye lithium-ion bhatiri chikamu chakakosha chekuvimbisa kushanda kwebhatiri uye kuchengeteka.Basa guru rekuparadzanisa nderokuparadzanisa magetsi akanaka uye asina kunaka, uye panguva imwe chete, inogonawo kugadzira chiteshi chekufamba kweion uye kuchengetedza electrolyte inodiwa.Kuita uye zvinoenderana nemaparamita eiyo lithium-ion bhatiri separator inounzwa seinotevera:

1. Kugadzikana kwekemikari: Iyo diaphragm inofanira kuva yakanakisa kugadzikana kwemakemikari, kunaka kwekudzivirira kusvibiswa uye kukwegura kusinganzwisisi pasi pemamiriro ezvinhu e-organic solvent, uye inogona kuchengetedza kushanda kwakagadzikana pasi pemamiriro ezvinhu akaoma akadai sekushisa kwepamusoro uye kunyorova kwepamusoro.

2. Mechanical simba: Muparadzi anofanira kunge ane simba rakakwana remagetsi uye elasticity kuti ave nechokwadi chesimba rakakwana rekusimba uye kupfeka kusagadzikana kudzivirira kukanganisa panguva yekusangana kana kushandiswa.

3. Ionic conductivity: Pasi pegadziriro ye electrolyte, iyo ionic conductivity yakaderera pane yeaqueous electrolyte system, saka muparadzi anofanira kunge ane maitiro ekudzivirira pasi uye high ionic conductivity.Panguva imwecheteyo, kuitira kuti kuderedze kushorwa, hupamhi hwekuparadzanisa hunofanira kuva hutete sezvinobvira kuita kuti nzvimbo ye electrode ive yakakura sezvinobvira.

4. Thermal kugadzikana: Kana zvisizvo kana kukundikana zvakadai sekuwedzera, overdischarge, uye short circuit inoitika panguva yekushanda kwebheteri, muparadzi anofanira kuva nekugadzikana kwakanaka kwekushisa.Pane imwe tembiricha, diaphragm inofanira kupfava kana kunyunguduka, nekudaro ichivharira dunhu remukati rebhatiri uye kudzivirira njodzi yekuchengetedza bhatiri.

5. Kunyorova kwakakwana uye kudzoreka kwepore chimiro: Chimiro chepore uye pamusoro pekuvhara kwepaparadzi inofanira kuva nekugadzirisa zvakakwana wetting controllability kuti ive nechokwadi chekuparadzanisa, nokudaro kuvandudza simba uye kutenderera hupenyu hwebheteri.Kazhinji kutaura, polyethylene flake (PP) uye polyethylene flake (PE) microporous diaphragms zvinhu zvakajairika diaphragm zvinhu parizvino, uye mutengo wacho wakachipa.Asi kune mamwe ma lithium-ion bhatiri separator zvinhu, senge polyester, zvine maitiro akanaka, asi mutengo wakanyanya kukwirira.