Tlhahlobo ea Flame Retardant le Litlhahiso bakeng sa Liaparo tsa Battery Separator

Tlhahlobo ea Flame Retardant le Litlhahiso bakeng sa Liaparo tsa Battery Separator

Moreki o hlahisa li-separators tsa betri, 'me sebaka sa karohano se ka koaheloa ka lera, hangata alumina (Al₂O₃) e nang le palo e nyane ea binder. Hona joale ba batla lisebelisoa tse ling tse thibelang malakabe ho nka sebaka sa alumina, ka litlhoko tse latelang:

• Ho lieha ho sebetsa ha lelakabe ho 140°C(mohlala, ho bola ho ntša likhase tse sa sebetseng).
• Elektrochemical botsitsole ho tsamaellana le likarolo tsa betri.

E khothalelitsoeng Flame Retardants le Analysis

1. Phosphorus-Nitrogen Synergistic Flame Retardants (mohlala, Modified Ammonium Polyphosphate (APP) + Melamine)

Mokhoa:

• Mohloli oa acid (APP) le mohloli oa khase (melamine) li kopanya ho lokolla NH₃ le N₂, ho hlapolla oksijene le ho etsa lesela la char ho thibela malakabe.
  Melemo:
• Phosphorus-nitrogen synergy e ka theola mocheso oa ho bola (o ka feto-fetoha ho ~140°C ka nano-size kapa sebopeho).
• N₂ ke khase e sa sebetseng; Tšusumetso ea NH₃ ho electrolyte (LiPF₆) e hloka tlhahlobo.
  Maikutlo:
• Netefatsa botsitso ba APP ho li-electrolyte (qoba hydrolysis ho asiti ea phosphoric le NH₃). Ho roala silika ho ka ntlafatsa botsitso.
• Teko ea ho lumellana le electrochemical (mohlala, cyclic voltammetry) ea hlokahala.

2. Li-Retardants tse thehiloeng ho Nitrogen (mohlala, Azo Compound Systems)

Mokhethoa:Azodicarbonamide (ADCA) e nang le li-activator (mohlala, ZnO).
Mokhoa:

• Mocheso oa ho bola o ka fetoloa ho 140-150 ° C, o lokolla N₂ le CO₂.
  Melemo:
• N₂ ke khase ea inert e loketseng, e seng kotsi ho libeteri.
  Maikutlo:
• Laola lihlahisoa (mohlala, CO, NH₃).
• Microencapsulation e ka khona ho lokisa mocheso oa ho bola.

3. Carbonate/Acid Thermal Reaction Systems (mohlala, Microencapsulated NaHCO₃ + Acid Source)

Mokhoa:

• Li-microcapsules li phatloha ka 140 ° C, e leng se etsang hore ho be le karabelo pakeng tsa NaHCO₃ le organic acid (mohlala, citric acid) ho lokolla CO₂.
  Melemo:
• CO₂ ha e sebetse ebile e bolokehile; karabelo mocheso oa laoleha.
  Maikutlo:
• Li-ion tsa sodium li ka kena-kenana le lipalangoang tsa Li⁺; nahana ka letsoai la lithium (mohlala, LiHCO₃) kapa "immobilizing Na⁺" ka ho roala.
• Ntlafatsa encapsulation bakeng sa botsitso ba mocheso oa kamore.

Likhetho tse ling tse ka khonehang

• Metal-Organic Frameworks (MOFs):mohlala, ZIF-8 e bola ka mocheso o phahameng ho lokolla khase; skrine bakeng sa li-MOF tse nang le mocheso o lumellanang oa ho bola.
• Zirconium Phosphate (ZrP):E theha lera la mokoallo holim'a ho bola ha mocheso, empa e ka hloka nano-size ho theola mocheso oa ho bola.

Likhothaletso tsa Teko

1. Tlhahlobo ea Thermogravimetric (TGA):Etsa qeto ea mocheso oa ho bola le thepa ea ho lokolla khase.
2. Teko ea Electrochemical:Lekola phello ho conductivity ea ionic, impedance interfacial, le ts'ebetso ea libaesekele.
3. Teko ea ho Rata Lelakabe:mohlala, teko ea ho chesa e otlolohileng, tekanyo ea ho honyela ha mocheso (ho 140°C).

Qetello

Thephosphorus-nitrogen synergistic flame retardant e fetotsoeng (mohlala, APP e koahetsoeng + melamine)e khothaletsoa pele ka lebaka la ho lieha ha eona ho leka-lekaneng lelakabe le mocheso oa ho bola oa ho senyeha. Haeba NH₃ e tlameha ho qojoa,litsamaiso tsa motsoako oa azokapamicroencapsulated CO₂-release systemske mekhoa e meng e sebetsang. Ho eletsoa ho netefatsoa ha liteko ho netefatsa botsitso ba electrochemical le bokhoni ba ts'ebetso.

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