Passivation mu Mabatire a Lithium
Kupititsa patsogolo mabatire a lithiamu, makamaka omwe amagwiritsa ntchito lithiamu thionyl chloride (LiSOCl2) chemistry, imatanthawuza chinthu chodziwika bwino pamene filimu yopyapyala imapanga pa lithiamu anode. Kanemayu amapangidwa makamaka ndi lithiamu chloride (LiCl), wopangidwa ndi zomwe zimachitika mu cell. Ngakhale kusanjikiza uku kumatha kukhudza magwiridwe antchito a batri, makamaka pakatha nthawi yayitali osagwira ntchito, kumathandizanso kwambiri kukulitsa moyo wa alumali wa batri ndi chitetezo.
Kupanga kwa Passivation Layer
M'mabatire a lithiamu thionyl chloride, kusuntha kumachitika mwachibadwa chifukwa cha zomwe zimachitika pakati pa lithiamu anode ndi thionyl chloride (SOCl2) electrolyte. Izi zimapanga lithiamu chloride (LiCl) ndi sulfure dioxide (SO2) monga zopangira. Lifiyamu kloridi pang'onopang'ono amapanga wosanjikiza woonda, wolimba pamwamba pa lithiamu anode. Chosanjikiza ichi chimagwira ntchito ngati insulator yamagetsi, zomwe zimalepheretsa kutuluka kwa ayoni pakati pa anode ndi cathode.
Ubwino wa Passivation
The passivation layer sizowononga kwathunthu. Ubwino wake waukulu ndikukulitsa moyo wa alumali wa batri. Pochepetsa kutsika kwa batire, gawo la passivation limatsimikizira kuti batire imasungabe chiwongolero chake pakanthawi kosungirako, ndikupanga mabatire a LiSOCl2 kukhala abwino kwa mapulogalamu omwe kudalirika kwanthawi yayitali popanda kukonza ndikofunikira, monga nthawi yadzidzidzi komanso mphamvu zosunga zobwezeretsera. zida, zida zankhondo, ndi zamankhwala.
Komanso, passivation wosanjikiza amathandizira pachitetezo chonse cha batri. Zimalepheretsa kuchitapo kanthu kwakukulu pakati pa anode ndi electrolyte, zomwe zingayambitse kutenthedwa, kuphulika, kapena kuphulika nthawi zambiri.
Mavuto a Passivation
Ngakhale zili zopindulitsa, kuyimitsa kumabweretsa zovuta zazikulu, makamaka betri ikabwezeretsedwanso pakatha nthawi yayitali osagwira ntchito. The insulating katundu wa passivation wosanjikiza angayambitse kukana kwamkati, zomwe zingayambitse:
● Kuchepetsa mphamvu yamagetsi (kuchedwa kwamagetsi)
●Kuchepa mphamvu
●Kuyankha mochedwa
Izi zitha kukhala zovuta pazida zomwe zimafunikira mphamvu yayikulu mukangotsegula, monga ma tracker a GPS, ma transmitters adzidzidzi, ndi zida zina zamankhwala.
Kuchotsa kapena Kuchepetsa Zotsatira za Passivation
1. Kuyika Katundu: Njira imodzi yodziwika bwino yochepetsera zovuta za passivation imaphatikizapo kugwiritsa ntchito mphamvu yamagetsi yapakati pa batri. Katunduyu amathandizira 'kuphwanya' gawo la passivation, zomwe zimapangitsa kuti ma ion ayambe kuyenda momasuka pakati pa ma elekitirodi. Njirayi imagwiritsidwa ntchito nthawi zambiri pamene zipangizo zimachotsedwa kusungirako ndipo zimayenera kuchita mwamsanga.
2. Kuthamanga kwa Pulse: Pazovuta kwambiri, njira yotchedwa pulse charger ingagwiritsidwe ntchito. Izi zimaphatikizapo kugwiritsa ntchito ma pulse afupikitsa, apamwamba-panopa ku batri kuti asokoneze gawo la passivation mwamphamvu kwambiri. Njirayi ikhoza kukhala yothandiza koma iyenera kuyang'aniridwa mosamala kuti isawononge batri.
3. Kusintha kwa Battery: Zipangizo zina zimakhala ndi ndondomeko yowonongeka yomwe nthawi ndi nthawi imagwiritsa ntchito katundu ku batri panthawi yosungira. Njira yodzitetezerayi imathandizira kuchepetsa makulidwe a passivation layer yomwe imapanga, kuwonetsetsa kuti batire imakhalabe yokonzeka kugwiritsidwa ntchito popanda kuwonongeka kwakukulu kwa magwiridwe antchito.
4. Zinthu Zosungidwa Zosungidwa: Kusunga mabatire pansi pazikhalidwe zoyendetsedwa ndi chilengedwe (kutentha koyenera ndi chinyezi) kungachepetsenso kuchuluka kwa mapangidwe a passivation. Kutentha kozizira kumatha kuchepetsa kukhudzidwa kwa mankhwala omwe amakhudzidwa ndi passivation.
5. Zowonjezera Zamankhwala: Ena opanga mabatire amawonjezera mankhwala opangira ma electrolyte omwe amatha kuchepetsa kukula kapena kukhazikika kwa gawo la passivation. Zowonjezera izi zapangidwa kuti zisunge kukana kwamkati pamiyezo yoyendetsedwa bwino popanda kusokoneza chitetezo kapena alumali moyo wa batri.
Pomaliza, ngakhale kuthamangitsidwa kumawoneka ngati choyipa mu mabatire a lithiamu thionyl chloride, ndi lupanga lakuthwa konsekonse komwe kumaperekanso zopindulitsa kwambiri. Kumvetsetsa chikhalidwe cha passivation, zotsatira zake, ndi njira zochepetsera zotsatirazi ndizofunikira kuti muwonjezere magwiridwe antchito a mabatirewa pakugwiritsa ntchito. Njira monga kuyika katundu, kuthamanga kwa pulse, ndi batire yokhazikika ndizofunikira kwambiri pakuwongolera kukhazikika, makamaka pamapulogalamu ovuta komanso odalirika kwambiri. Pamene ukadaulo ukupita patsogolo, kuwongolera kwina kwa chemistry ya batri ndi kasamalidwe ka ma batri akuyembekezeka kupititsa patsogolo kasamalidwe ka zinthu, potero kukulitsa magwiridwe antchito komanso mphamvu ya mabatire a lithiamu.
Nthawi yotumiza: May-11-2024
