Indlela yokuphucula ukhuseleko lweebhetri ze-lithium

Inzuzo yezithuthi zamandla amatsha kukuba ziphantsi kwekhabhoni kunye nokusingqongileyo kunobungane kuneenqwelo zepetroli. Isebenzisa i-futha yemoto engaqhelekanga njengomthombo wamandla, njengeebhetri ze-lithium, i-hydrogen fuel, njl. Ukusetyenziswa kwebhetri ye-lithium-ion kubanzi kakhulu, ngaphandle kwezithuthi zamandla amatsha, iiselfowuni, ii-laptops, ii-PC zethebhulethi, amandla eselula, iibhayisikili zombane. , izixhobo zombane, njl.

Nangona kunjalo, ukhuseleko lweebhetri ze-lithium-ion akufanele kujongelwe phantsi. Inani leengozi libonisa ukuba xa abantu behlawuliswa ngokungafanelekanga, okanye ubushushu be-ambient buphezulu kakhulu, kulula kakhulu ukuqalisa ukutsha kwe-lithium-ion ibhetri ngokukhawuleza, ukuqhuma, okuye kwaba yeyona ndawo ibuhlungu ekuphuhlisweni kweebhetri ze-lithium-ion.

Nangona iipropathi zebhetri ye-lithium ngokwayo inquma "ixesha elivuthayo kunye nokuqhuma", kodwa akunakwenzeka ngokupheleleyo ukunciphisa umngcipheko kunye nokhuseleko. Ngenkqubela phambili eqhubekayo yeteknoloji yebhetri, zombini iinkampani zeeselfowuni kunye neenkampani zezithuthi zamandla amatsha, ngokusebenzisa inkqubo yokulawula ibhetri efanelekileyo kunye nenkqubo yokulawula i-thermal, ibhetri iya kukwazi ukuqinisekisa ukhuseleko, kwaye ayiyi kuqhuma okanye isiganeko esizenzekelayo sokuvutha.

1.Ukuphucula ukhuseleko lwe-electrolyte

Kukho i-reactivity ephezulu phakathi kwe-electrolyte kunye nee-electrode ezilungileyo kunye ne-negative, ngakumbi kumaqondo aphezulu. Ukuphucula ukhuseleko lweebhetri, ukuphucula ukhuseleko lwe-electrolyte yenye yeendlela ezisebenzayo. Ngokongeza izongezo ezisebenzayo, usebenzisa i-lithium salts entsha kunye nokusebenzisa i-solvents entsha, iingozi zokhuseleko ze-electrolyte zinokusombululwa ngokufanelekileyo.

Ngokwemisebenzi eyahlukeneyo yezongezo, zinokwahlulwa zibe zezi ndidi zilandelayo: izongezo zokukhusela ukhuseleko, izongezo ezenza ifilimu, izongezo zokukhusela i-cathode, izongezo zokuzinzisa ityuwa ye-lithium, izongezo zokunyusa i-lithium precipitation, i-collector fluid anti-corrosion additives, i-additives ephuculweyo yokumanzi. , njl.

2. Ukuphucula ukhuseleko lwezinto ze-electrode

I-lithium iron phosphate kunye ne-ternary composites zithathwa njengexabiso eliphantsi, "ukhuseleko olugqwesileyo" izinto ze-cathode ezinokuthi zisetyenziswe ngokudumileyo kushishino lwezithuthi zombane. Kwizinto ze-cathode, indlela eqhelekileyo yokuphucula ukhuseleko lwayo kukuguqulwa kwengubo, njengee-oxide zetsimbi kumphezulu wezinto ze-cathode, inokuthintela ukudibanisa ngokuthe ngqo phakathi kwezinto ze-cathode kunye ne-electrolyte, inqanda ukuguqulwa kwesigaba se-cathode, ukuphucula isakhiwo sayo. uzinzo, ukunciphisa ukuphazamiseka kwe-cations kwi-lattice, ukuze kuncitshiswe imveliso yobushushu esecaleni.

Izinto ezimbi ze-electrode, ekubeni ubuso bayo buhlala buyinxalenye yebhetri ye-lithium-ion eyona nto ichaphazeleka kakhulu kwi-thermochemical decomposition kunye ne-exotherm, ukuphucula ukuzinza kwe-thermal yefilimu ye-SEI yindlela ephambili yokuphucula ukhuseleko lwezinto ezimbi ze-electrode. Ukuzinza kwe-thermal yezinto ze-anode kunokuphuculwa nge-oxidation ebuthakathaka, isinyithi kunye ne-metal oxide deposition, i-polymer okanye i-carbon cladding.

3. Phucula uyilo lokhuseleko lokhuseleko lwebhetri

Ukongeza ekuphuculeni ukhuseleko lwezixhobo zebhetri, amanyathelo amaninzi okukhusela okhuseleko asetyenziswa kwiibhetri ze-lithium-ion zorhwebo, ezifana nokuseta iivalvu zokhuseleko lwebhetri, iifuse ezinyibilikayo ze-thermal, ukudibanisa amacandelo ane-coefficients efanelekileyo yokushisa kuluhlu, usebenzisa i-diaphragms etywinwe ngokufudumeleyo, ukulayisha ukhuseleko olukhethekileyo. iisekethe, kunye neenkqubo zolawulo lwebhetri ezizinikeleyo, zikwayindlela yokuphucula ukhuseleko.

Ixesha lokuposa: Feb-14-2023