Kev sib tsoo hauv Lithium-Ion Roj Teeb Siv Hluav Taws Xob Technology

Ib txoj kev tshawb fawb tsis ntev los no tau luam tawm thaum Lub Xya Hli 29 hauv phau ntawv xov xwmAdvanced Functional Materialspiav qhia txog txoj kev sai, ua tau zoo, thiab tus phooj ywg ib puag ncig rau kev xaiv lithium rov qab siv hluav taws xob microwave thiab ib qho yooj yim biodegradable hnyav. Cov kws tshawb fawb ntawm Rice University hauv Tebchaws Meskas tau tsim cov txheej txheem tshiab no, uas tuaj yeem rov qab tau txog li 50% ntawm lithium los ntawm siv lithium-ion roj teeb (LIB) cathodes hauv tsuas yog 30 vib nas this, hais txog qhov tseem ceeb hauv lub raj mis hauv LIB siv thev naus laus zis.

Tam sim no, qhov kev thov rau lithium, cov hlau dawb-dawb, tau nce siab, outstripping mov.

Cov txheej txheem niaj hnub ntawm kev rov qab lithium los ntawm cov roj teeb siv tau yog ib puag ncig kev puas tsuaj thiab tsis muaj txiaj ntsig zoo. Cov kev sib tw tseem ceeb suav nrog kev sib kis lithium thiab kev poob thaum lub sijhawm rov qab los, nrog rau kev siv lub zog siab. Txij li thaum lithium feem ntau yog muab rho tawm tom qab lwm cov hlau, cov kws tshawb fawb tau nrhiav txoj hauv kev tshwj xeeb los tsom rau lithium rov qab.

Hauv txoj kev tshawb no, cov kws tshawb fawb tau siv cov tshuaj sib xyaw ntawm choline chloride thiab ethylene glycol ua qhov sib sib zog nqus eutectic hnyav (DES). Lawv yav dhau los pom tias thaum lub sij hawm leaching txheej txheem nrog DES, lithium ions nyob ib puag ncig los ntawm chloride ions los ntawm choline chloride thiab leached rau hauv cov tshuaj.

Txhawm rau tshem tawm lwm cov hlau xws li cobalt lossis npib tsib xee, choline chloride thiab ethylene glycol yuav tsum tau ua. Ntawm cov tshuaj no, tsuas yog choline chloride zoo absorbs microwaves. Cov kws tshawb fawb tau muab cov roj teeb pov tseg rau hauv cov kuab tshuaj thiab siv hluav taws xob microwave, ua kom cov lithium leaching los ntawm lwm cov hlau.

Kev siv hluav taws xob microwave hauv cov txheej txheem no yog qhov zoo sib xws rau cov khoom noj cua sov sai sai hauv chav ua noj microwave qhov cub. Lub zog ncaj qha xa mus rau cov molecules, ua rau cov tshuaj tiv thaiv sai dua li cov txheej txheem cua sov.

Cov kws tshawb fawb pom tau tias nrog cov txheej txheem microwave, leaching 87% ntawm lithium siv sijhawm 15 feeb, thaum ua tiav cov txiaj ntsig zoo tib yam nrog cov roj da dej kub yuav tsum tau 12 teev. Qhov kev nthuav dav no ua rau muaj txiaj ntsig zoo txhim kho kev lag luam thiab kev cuam tshuam ib puag ncig ntawm lithium-ion roj teeb rov ua dua tshiab, muab cov kev daws teeb meem tshiab rau cov teeb meem loj thoob ntiaj teb.

Yog xav paub ntxiv txog kev lag luam thiab cov khoom lag luam, thov hu rau peb:
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