Kupanga kwa batri ya lithiamu-ion

Kupanga ndi kubwezeretsanso batire ya lithiamu-ion

Thebatri ya lithiamu-ionamapangidwa ndi eletrolyte, olekanitsa, cathode ndi anode ndi mlandu.

Ma electrolytemu batri ya lithiamu-ion ikhoza kukhala gel kapena polima, kapena kusakaniza gel ndi polima.

Ma electrolyte mu mabatire a Li-ion amakhala ngati sing'anga yonyamula ma ion mu batri.Nthawi zambiri imakhala ndi mchere wa lithiamu ndi organic solvents.Electrolyte imagwira ntchito yofunika kwambiri pamayendedwe a ion pakati pa ma elekitirodi abwino ndi oyipa a batri ya lithiamu-ion, kuwonetsetsa kuti batire ikhoza kukwaniritsa voteji yayikulu komanso kachulukidwe kamphamvu.Electrolyte nthawi zambiri imapangidwa ndi zosungunulira zamadzimadzi kwambiri, mchere wa lithiamu electrolyte ndi zowonjezera zofunika kuphatikiza mosamalitsa mosiyanasiyana malinga ndi momwe zinthu zilili.

Zinthu za cathodeMitundu ya batri ya lithiamu-ion:

• LiCoO2
• Li2MnO3
• LiFePO4
• NCM
• NCA

 Zida za cathode zimakhala ndi ndalama zoposa 30% za batri yonse.

Anodebatire la lithiamu-ion lili

Ndiye anode ya batire ya lithiamu-ion imakhala ndi pafupifupi 5-10 peresenti ya batire yonse.Zipangizo za anode zochokera ku carbon ndi zinthu zomwe zimagwiritsidwa ntchito kwambiri ndi anode pamabatire a lithiamu-ion.Poyerekeza ndi chikhalidwe zitsulo lithiamu anode, ali apamwamba chitetezo ndi bata.Zida za anode zochokera ku carbon makamaka zimachokera ku graphite yachilengedwe komanso yopangira, carbon fiber ndi zipangizo zina.Pakati pawo, graphite ndiye chinthu chachikulu, chomwe chili ndi malo apamwamba kwambiri komanso madulidwe amagetsi, komanso zida za kaboni zimakhala ndi kukhazikika kwamankhwala komanso kusinthikanso.Komabe, mphamvu ya zinthu za carbon-based negative electrode ndizochepa, zomwe sizingakwaniritse zofunikira za mapulogalamu ena apamwamba.Chifukwa chake, pakali pano pali kafukufuku wokhudza zida zatsopano za kaboni ndi zida zophatikizika, ndikuyembekeza kupititsa patsogolo mphamvu ndi moyo wozungulira wa zida za carbon-based negative electrode.

Akadali ndi silicon-carbon negtive electrode material.Zinthu za silicon (Si): Poyerekeza ndi ma elekitirodi achikhalidwe a carbon negative, ma elekitirodi a silicon ali ndi mphamvu zapadera komanso kachulukidwe kamphamvu.Komabe, chifukwa cha kuchuluka kwakukulu kwa zinthu za silicon, ndikosavuta kuyambitsa kukula kwa ma elekitirodi, potero kufupikitsa moyo wa batri.

Wolekanitsabatri ya lithiamu-ion ndi gawo lofunikira pakuwonetsetsa kuti batire ikugwira ntchito komanso chitetezo.Ntchito yayikulu ya olekanitsa ndikulekanitsa ma elekitirodi abwino ndi oipa, ndipo nthawi yomweyo, imatha kupanganso njira yoyendetsera ion ndikusunga ma electrolyte ofunikira.Ntchito ndi magawo okhudzana ndi cholekanitsa batire la lithiamu-ion amayambitsidwa motere:

1. Kukhazikika kwa Chemical: The diaphragm iyenera kukhala ndi kukhazikika kwamphamvu kwamankhwala, kukana bwino kwa dzimbiri komanso kukana kukalamba pansi pamikhalidwe yosungunulira ya organic, ndipo imatha kukhalabe yokhazikika pamikhalidwe yovuta monga kutentha kwambiri komanso chinyezi chambiri.

2. Mphamvu zamakina: Wolekanitsa ayenera kukhala ndi mphamvu zokwanira zamakina ndi kukhazikika kuti atsimikizire mphamvu zokwanira zolimba komanso kuvala kukana kuti zisawonongeke pamisonkhano kapena kugwiritsa ntchito.

3. Ionic conductivity: Pansi pa organic electrolyte system, ma ionic conductivity ndi otsika kuposa amadzimadzi a electrolyte, kotero olekanitsa ayenera kukhala ndi makhalidwe otsika kukana ndi ma ionic conductivity apamwamba.Pa nthawi yomweyi, pofuna kuchepetsa kukana, makulidwe a olekanitsa ayenera kukhala ochepa kwambiri kuti malo a electrode akhale aakulu momwe angathere.

4. Kukhazikika kwamafuta: Pamene zolakwika kapena zolephera monga kuchulukitsitsa, kutulutsa, ndi kufupikitsidwa kwafupipafupi kumachitika panthawi ya batri, wolekanitsa ayenera kukhala ndi kukhazikika kwabwino kwa kutentha.Pa kutentha kwina, diaphragm iyenera kufewetsa kapena kusungunuka, motero kutsekereza kuzungulira kwa mkati mwa batire ndikupewa ngozi zachitetezo cha batri.

5. Kunyowetsa kokwanira komanso kuwongolera pore: Mapangidwe a pore ndi zokutira pamwamba pa olekanitsa ayenera kukhala ndi kuwongolera konyowa kokwanira kuti atsimikizire olekanitsa, potero kuwongolera mphamvu ndi moyo wa batire.Nthawi zambiri, polyethylene flake (PP) ndi polyethylene flake (PE) ma diaphragms ang'onoang'ono ndi zida zodziwika bwino za diaphragm pakadali pano, ndipo mtengo wake ndi wotsika mtengo.Koma pali zida zina zolekanitsa batire la lithiamu-ion, monga poliyesitala, zomwe zimakhala ndi ntchito yabwino, koma mtengo wake ndi wokwera kwambiri.