Cov roj teeb hauv lub xeev puas cuam tshuam los ntawm qhov txias?

Qhov txias npaum li cas cuam tshuam rau cov roj teeb hauv lub xeevthiab dab tsi tau ua txog nws:

Vim li cas qhov txias yog qhov nyuaj

1. Tsawg ionic conductivity

   • Cov khoom siv electrolytes (ceramics, sulfides, polymers) cia siab rau lithium ions hopping los ntawm cov khoom siv lead ua khov lossis cov khoom siv polymer.

   • Nyob rau hauv qis kub, qhov no hopping slows down, yog li covinternal kuj ncethiab lub zog xa khoom poob.

2. Interface teeb meem

   • Hauv cov roj teeb uas muaj zog, kev sib cuag ntawm cov khoom electrolyte thiab electrodes yog qhov tseem ceeb.

   • Qhov txias txias tuaj yeem txo cov khoom ntawm cov nqi sib txawv, tsimmicro-gapntawm interfaces → ua ion ntws tsis zoo.

3. Kev them nyiaj nyuaj

   • Ib yam li cov roj teeb lithium-ion ua kua, them nyiaj ntawm qhov kub thiab txias heevlithium plating(metallic lithium ua rau ntawm anode).

   • Nyob rau hauv solid-state, qhov no tuaj yeem ua rau muaj kev puas tsuaj ntau dua vim tias dendrites (koob zoo li lithium deposits) tuaj yeem tawg cov khoom electrolyte.

Piv rau lithium-ion li niaj zaus

• Ua kua electrolyte lithium-ion: Txias ua rau cov kua thicker (tsawg conductive), txo qhov ntau thiab them ceev.

• Solid-state lithium-ion: Muaj kev nyab xeeb hauv qhov txias (tsis muaj kua khov / tawm), tab sistseem poob conductivityvim tias cov khib nyiab tsis thauj ions zoo thaum lub sijhawm qis.

Cov kev daws teeb meem tam sim no hauv kev tshawb fawb

1. Sulfide electrolytes

   • Qee cov sulfide-raws li cov khoom electrolytes khaws cov conductivity siab txawm tias qis dua 0 ° C.

   • Kev cog lus rau EVs hauv cheeb tsam txias.

2. Polymer-ceramic hybrids

   • Kev sib xyaw ua ke ntawm cov polymers hloov tau nrog cov khoom siv ceramic txhim kho ion ntws ntawm qis temps thaum tswj kev nyab xeeb.

3. Interface engineering

   • Coatings los yog tsis txheej yog tsim los kom electrode-electrolyte tiv tauj ruaj khov thaum lub sij hawm kub viav vias.

4. Pre-heating systems hauv EVs

   • Ib yam li niaj hnub no EVs sov cov roj teeb ua kua ua ntej them, yav tom ntej solid-state EVs yuav siv tauthermal tswjkom cov hlwb nyob hauv lawv qhov zoo tshaj plaws (15-35 ° C).

Cov ntsiab lus:
Cov roj teeb-lub xeev muaj tseeb cuam tshuam los ntawm qhov txias, feem ntau yog vim qis ion conductivity thiab interface tsis kam. Lawv tseem muaj kev nyab xeeb dua li cov kua lithium-ion hauv cov xwm txheej, tab siskev ua tau zoo (ntau, tus nqi them, lub zog tso zis) tuaj yeem poob qis dua 0 ° C. Cov kws tshawb fawb tau nquag ua haujlwm ntawm electrolytes thiab cov qauv tsim uas nyob hauv qhov txias, tsom rau kev siv tau zoo hauv EVs txawm tias nyob rau lub caij ntuj no.