Ukuphumelela kwiTekhnoloji yeBattery yeLithium-Ion yokuRecycling

Uphononongo lwakutsha nje olupapashwe ngoJulayi 29 kwijenaliIiMathiriyeli eziSebenzayo eziPhezuluichaza indlela ekhawulezayo, esebenzayo, kunye nokusingqongileyo yokubuyisela i-lithium ekhethiweyo usebenzisa i-microwave radiation kunye ne-solvent e-biodegradable kalula. Abaphandi kwiYunivesithi yaseRice eUnited States baye baphuhlisa le nkqubo entsha, enokubuyisela ukuya kwi-50% ye-lithium kwi-cathodes ye-lithium-ion ibhetri (LIB) echithiweyo ngemizuzwana nje ye-30, ukujongana ne-bottleneck ebalulekileyo kwi-teknoloji ye-LIB yokuphinda isetyenziswe.

Okwangoku, imfuno ye-lithium, intsimbi esiliva-emhlophe, iyanda, ikhupha unikezelo.

Iindlela zemveli zokubuyisela i-lithium kwiibhetri ezichithiweyo ziyingozi kwindalo kwaye ayisebenzi kakuhle. Imingeni ephambili ibandakanya ukungcoliseka kwe-lithium kunye nokulahleka ngexesha lenkqubo yokubuyisela, kunye nokusetyenziswa kwamandla aphezulu. Ekubeni i-lithium ikhutshwa ngokuqhelekileyo emva kwezinye iintsimbi, abaphandi baye bafuna iindlela ezijolise ngokukodwa ekubuyiseleni i-lithium.

Kulo cwaningo, abaphandi basebenzisa umxube we-choline chloride kunye ne-ethylene glycol njenge-solvent eutectic enzulu (DES). Ngaphambili bafumanisa ukuba ngexesha lenkqubo ye-leaching kunye ne-DES, i-lithium ion ijikelezwe yi-chloride ion kwi-choline chloride kwaye ifakwe kwisisombululo.

Ukukhupha ezinye izinyithi ezifana ne-cobalt okanye i-nickel, zombini i-choline chloride kunye ne-ethylene glycol ziyafuneka. Phakathi kwezi zinto, i-choline chloride kuphela ithatha ngokufanelekileyo ii-microwaves. Abaphandi bantywilisela inkunkuma yebhetri kwi-solvent kwaye bafaka imitha ye-microwave, eyenza ukukhetha i-lithium leaching kwezinye izinyithi.

Ukusebenzisa imitha ye-microwave kule nkqubo kufana nokufudumeza ukutya ngokukhawuleza kwi-oven microwave ekhitshini. Amandla adluliselwa ngokuthe ngqo kwiimolekyuli, okwenza ukusabela ngokukhawuleza kuneendlela zokufudumeza eziqhelekileyo.

Abaphandi bafumanisa ukuba ngenkqubo ye-microwave, ukuvuza i-87% ye-lithium kuthathe imizuzu eyi-15, ngelixa ukufikelela kwinqanaba elifanayo lokubuyisela kunye nokufudumeza kwe-oyile kufuna iiyure ezili-12. Le ndlela yokuqhawula umhlaba iphucula kakhulu ukusebenza kwezoqoqosho kunye nefuthe lokusingqongileyo kwe-lithium-ion battery recycling, enikezela ngesisombululo esitsha esizinzileyo kwingxaki yehlabathi ekhulayo.

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