Zeziphi iindlela zokudilizwa kunye nokuphinda kusetyenziswe iibhetri ze-lithium iron phosphate? Phakathi kweebhetri ze-lithium iron phosphate eziye zachithwa, iibhetri ezingenalo ixabiso lokusetyenziswa kwezitebhisi kunye neebhetri emva kokuba izitebhisi zisetyenzisiwe zingena kwi-disassembly and recycling stage. Iibhetri zeLithium iron phosphate zahlukile kwiibhetri ze-ternary material kuba aziqulathanga isinyithi esinzima kwaye zihlaziywa ngokutsha ukusuka kwiLi, P, kunye neFe. Ixabiso elongeziweyo leemveliso ezisetyenzisiweyo liphantsi, kwaye iindlela zokurisayikilishwa kwexabiso eliphantsi kufuneka ziphuhliswe.

Zeziphi iindlela zokudilizwa kunye nokuphinda kusetyenziswe iibhetri ze-lithium iron phosphate?

Phakathi kweebhetri ze-lithium iron phosphate eziye zachithwa, iibhetri ezingenalo ixabiso lokusetyenziswa kwezitebhisi kunye neebhetri emva kokuba izitebhisi zisetyenzisiwe zingena kwi-disassembly kunye nesigaba sokuhlaziya. Iibhetri zeLithium iron phosphate zahlukile kwiibhetri ze-ternary material kuba aziqulathanga isinyithi esinzima kwaye zihlaziywa ngokutsha ukusuka kwiLi, P, kunye neFe. Ixabiso elongeziweyo leemveliso ezisetyenzisiweyo liphantsi, kwaye iindlela zokurisayikilishwa kwexabiso eliphantsi kufuneka ziphuhliswe. Zimbini iindlela zokurisayikilisha: indlela yokupeyinta kunye nendlela yokuziqhelanisa.

Lithium yentsimbi phosphate ibhetri

Indlela yokuzoba inkqubo yokurisayikilisha

Indlela yokudweba yemveli ye-lithium iron phosphate ibhetri d ngokubanzi ukutshisa i-electrode kwiqondo lokushisa eliphezulu. Ikhabhoni kunye ne-organic matter kwi-electrode fragments iyatshiswa, kwaye umlotha oseleyo ongenakutsha uhlolwe njengento ecocekileyo ye powder equkethe isinyithi kunye nee-oxide zetsimbi. Indlela inenkqubo elula, kodwa inenkqubo ende yokucubungula kunye nenqanaba eliphantsi lokubuyisela ioli kunye negesi.

Ukuphuculwa kweteknoloji yokubuyisela umzobo kukususa i-adhesive organic by calcination, kwaye ukwahlula i-lithium iron phosphate powder kwi-aluminium foil ukufumana i-lithium iron phosphate substance, uze udibanise umlinganiselo ofanelekileyo wezinto eziluhlaza ukuze ufumane umlinganiselo ofunekayo we-molar ye-lithium, intsimbi, kunye nephosphorus. Ukwenziwa kwe-lithium iron phosphate entsha ngobushushu obuphezulu bendlela yesigaba esiqinileyo. Ngokweendleko, inkunkuma ye-lithium ye-iron phosphate iibhetri inokubuyiselwa ngendlela ephuculweyo yokudweba indlela eyomileyo yokufumana inzuzo, kodwa ngokwale nkqubo yokubuyisela kwakhona, i-lithium iron phosphate esanda kulungiswa inokungcola okuninzi kunye nokusebenza okungazinzanga.

inkqubo emanzi yokurisayikilisha

Ukubuyiswa okumanzi kweebhetri ze-lithium iron phosphate ikakhulu zinyibilikisa i-ion zensimbi kwi-lithium iron phosphate ibhetri ngokusebenzisa izisombululo ze-acid-base, kwaye zikhupha i-ion zetsimbi ezinyibilikileyo zibe yi-oxides, iityuwa, njl. I-NaOH kwinkqubo yokusabela, i-H2O4 kunye neninzi ye-reagents. Inkqubo yokuphinda isetyenziswe emanzi ilula, iimfuno zezixhobo aziphezulu, kwaye zifanelekile kwimveliso ye-industrial-scale. Abaphengululi baye bafunda indlela yonyango yebhetri ye-lithium-ion eqhelekileyo eTshayina.

Ukurisayikilishwa okumanzi kweebhetri ze-lithium iron phosphate ikakhulu kukubuyisela i-positive. Xa usebenzisa inkqubo emanzi ukubuyisela i-lithium iron phosphate cathode, umqokeleli wangoku we-aluminium foil kufuneka ahlulwe kuqala kwi-anode esebenzayo. Enye yeendlela zokuqhaqha umqokeleli wangoku nge-lye, izinto ezisebenzayo aziyi kusabela nge-lye, kwaye izinto ezisebenzayo zingafumaneka ngokucoca. Okwesibini i-solvent ye-organic, engakwazi ukunyibilikisa i-PVDF enamathelayo, ihlukanise i-lithium iron phosphate cathode impahla kwi-foil aluminium, kwaye emva koko isebenzise i-aluminium foil ukwenza inkqubo elandelayo kwizinto ezisebenzayo. I-solvent ye-organic inokuphinda isetyenziswe emva kwe-distillation. Xa kuthelekiswa neendlela ezimbini, ezi zimbini zihambelana nokusingqongileyo kwaye zikhuselekile. Enye yokubuyiselwa kwe-lithium iron phosphate kwi-anode kukuveliswa kwe-lithium carbonate. Le ndlela yokuphinda isetyenziswe inexabiso eliphantsi kwaye yamkelwe yiinkampani ezininzi ze-lithium iron phosphate recycling, kodwa inxalenye ephambili ye-lithium iron phosphate (umxholo we-95%) ayiphinda isetyenziswe, ibangele inkunkuma yemithombo.

Indlela efanelekileyo yokuphinda isetyenziswe emanzi kukuguqula inkunkuma ye-lithium yentsimbi ye-phosphate cathode ibe yityuwa ye-lithium kunye ne-iron phosphate ukuqonda ukubuyiswa kwezinto zonke ze-Li, Fe, kunye ne-P. Lithium ye-iron phosphate kufuneka iguqulwe ibe yityuwa ye-lithium kunye ne-iron phosphate, Intsimbi ye-ferrous kufuneka ifakwe kwi-oxidized iron trivalent, kwaye i-lithium kufuneka ifakwe inaliti eneasidi okanye i-alkaline yokufunxa amanzi. Abanye abaphengululi basebenzisa calcination oxidative ukwahlula iiflakes aluminiyam kunye lithium iron phosphate, kwaye ke leached ngokusebenzisa sulfuric acid ukwahlula phosphate ekrwada yentsimbi, kwaye wasebenzisa isisombululo njenge sodium carbonate ukususwa ukungcola ukuba precipitate lithium carbonate.

I-filtrate i-evaporated kwaye i-crystallized nge-anhydrous sodium sulfate njengemveliso. I-iron phosphate ekrwada inokucocwa ngakumbi kwi-betri-grade iron phosphate kwaye isetyenziswe kulungiselelo lwemathiriyeli ye-lithium iron phosphate. Emva kweminyaka yophando, le nkqubo iye yakhula ngakumbi.