Ngaba kunokwenzeka ukubuyisela izinto ezingalunganga ze-electrode kwibhetri yenkunkuma?

2022/04/08

Umbhali :Iflowpower-UMboneleli weSikhululo saMandla esiphathwayo

Ngaba i-electrode engalunganga yezinto ezijikelezayo kwiibhetri ezahlukeneyo, ingaba ibhetri inokuhambelana? Ukuze uxoxe ngeempawu zeendlela ezahlukeneyo zokuphinda zisebenzise izixhobo ze-electrode ezimbi, izinto ezingalunganga ze-electrode ezivela kwiibhetri ezahlukeneyo zibuyiswa, kwaye i-electrode engafanelekanga iphinda yenziwe, kwaye i-morphology ibonwa nge-SEM, njengoko kubonisiwe. Kuyabonakala ukuba i-morphology ye-VG kunye ne-RAM ihluke kakhulu, kwaye i-VG iyinto yoluhlu lwegraphite yesakhiwo sephepha. I-reaction yenziwe ngeshadi elincinci lokumila, elingekho kakuhle njenge-VG.

I-Epoxification, kodwa ayichaphazeli ukusebenza komjikelo jikelele. Umzobo. I-SEM (a) yezinto zeVG, (b) imithombo emibini eyahlukeneyo ye-RAM izinto ze-SEM (C).

(D). (E), ukongeza, uvavanyo oluncinci olwandisiweyo, ngqina ukuba kunokwenzeka ukubuyisela izinto ezingalunganga ze-electrode kwiibhetri zenkunkuma ze-lithium. Xa kuthelekiswa nokusebenza kovavanyo, ukwenzela ukuba kuqinisekiswe ukhuseleko lwenkqubo yokuqhawula, uvavanyo lokwandisa kufuneka luqhutywe kwindawo engasebenzi.

Iziphumo zibonisa ukuba izinto ezingalunganga ze-electrode kwibhetri yenkunkuma zinokulawulwa ngendlela yomatshini ukusuka kwibhetri yorhwebo, kwaye ibhetri eveliswe kwibhetri ephelelweyo ayincitshiswanga kakhulu kumjikelo wokuqala weeveki ezili-10. Ukusebenzisa i-RAM engayazi imbali yayo ye-loop kunye nomgangatho wokuvelisa, unokwenza ngokwenene ukulinganisa iimeko zokubuyisela i-LIB kwihlabathi lokwenyani. Umphumo wokubeka i-RAM kwimveliso entsha ye-electrode engalunganga ingabonwa kwi-SEM, kwaye kukho indlela entsha yokuchithwa kwebhetri ye-lithium.

Nangona i-morphology ye-RAM yahlukile, akukho mahluko ubalulekileyo ekusebenzeni. Kulo lonke uvavanyo, nangona lungekho ngokubanzi, kusenokwenzeka ukujonga into eyenziwa yi-pre-lithium graphite material, ukwenzela ukuba ubukho be-lithium embedding material carbon inobungqina. Ngonyango olufanayo, i-electrode engalunganga eveliswa yi-RAM kunye ne-VG ibonisa ukuzinza okufanayo okujikelezayo, kwaye i-RAM engalunganga iphezulu.

Umjikelo wokuqala we-RAM kunye neebhetri ze-VG ubonisa ukuba nangona isetyenziswa, ubomi buphelile, kwaye i-RAM isagcina i-crystallinity. Ukuphuculwa komthamo wokuqala wokujikeleza kubangelwa ikakhulu kwizinto ezingalunganga ze-electrode emva komjikelezo we-lithium ion embedding, kwaye ayibangeli ukusetyenziswa komxholo we-Li. Nangona kunjalo, kuyimfuneko ukuqinisekisa ukuba i-pre-lithiance inceda ukusekwa kwakhona kwe-SEI kwibhetri ye-RAM, kufuna uphando olongezelelweyo.

Ukongeza, idatha eninzi kufuneka ivavanywe, njengotshintsho kwimijikelezo yexesha elide, ukuxhomekeka kokukhulisa, njl. Ngokutsho kohlalutyo, ibhetri ye-lithium ikwinkqubo yokuhlawula kunye nokukhupha, kunye nezinto ezingalunganga ze-electrode ngokuqinisekileyo ziya kuthatha ngaphezulu okanye. ikristale ulwakhiwo ngaphantsi utshintsho, kunye nebhetri negative material ukupheliswa kobomi lunqweneleka ukuba ihambelane engasetyenziswanga negative electrode ulwakhiwo yokusebenza impahla okanye akunakwenzeka. Kwangaxeshanye, ingqiqo yesampulu kuvavanyo kufuneka ithathelwe ingqalelo ukuba uvavanyo lwentsebenzo ye-electrochemical ayibanzi, kwaye kuyafuneka ukuba kuqwalaselwe ngakumbi.

Ukuphinda kusetyenziswe izinto ze-electrode ezingalunganga kuyindlela elungileyo yonyango lwenkunkuma, ukwahlula iindidi ezahlukeneyo zezixhobo ze-electrode ezingalunganga, kunye nokuhlolwa komgangatho ngokuhambelana nokusetyenziswa kwemveliso kunokuqinisekisa umgangatho wemveliso kunye nokusetyenziswa kwenkunkuma ngokufanelekileyo. .

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