Indlela efanele yokwelashwa kwe-electrode esebenzayo ngaphambi kwe-lithiuming yezinkinga ze-lithium?

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - អ្នកផ្គត់ផ្គង់ស្ថានីយ៍ថាមពលចល័ត

Lesi sihloko se-lithium sesivele sikhuluma ngempilo yakudala. Senze isifinyezo esilula sokuphikiswa kwe-lithium kwamanje okujwayelekile. Ngokuvamile, i-metal Li powder kanye nepeni ye-Li foil isetshenziselwa ukufeza ubuchwepheshe be-tonifying obungalungile, futhi okwamanje Indlela eqinile esetshenziswa umenzi webhethri we-lithium-ion wamandla, kodwa izinkinga zokuphepha nezindleko eziphakeme yizinkinga i-Metal Li lys.

Ngokuphambene, ukuphakama okuhle kwenqubo ye-lithium kuhle, akuguquli inqubo ekhona, kodwa ukuvuthwa kobuchwepheshe kuphansi, futhi abakhiqizi bezinto ezifanele bazokwethula imikhiqizo ehambisanayo. Ukulungiswa kwe-electrode enhle Ngaphezu kokwengeza inani elincane lomthamo omkhulu ohlelweni oluhle lwe-electrode, kunezindlela zokwengeza ama-elementi e-Li ngokweqile kusuka ekuhlanganiseni kwezinto ezibonakalayo ze-electrode, ngaleyo ndlela kugcinwe i-LI eyeqile ezintweni ezinhle, enkokhelweni yokuqala Ama-LI angaphezu kwenqubo angakhulula izakhi ze-LI ezengeza ukusetshenziswa kwe-electrode engemihle, ngaleyo ndlela kufezeke inhloso yokuthuthukisa ukusebenza kahle kokuqala. Ngezindlela ezimbili zokwengeza i-lithium eyeqile entweni ye-electrode eqondile, eyokuqala iwukuthi endabeni ye-electrode enhle eshumekwe ukusabela kwe-electrochemical, impahla ye-electrode ephozithivu ngokuvamile yakheka ibe i-semi-battery, futhi impahla ye-electrode eqondile iyabhanqiswa.

Izinto ze-electrode ezinhle zibe sezibunjwa zibe ibhethri eliphelele ngokujwayelekile i-electrode engalungile, ngaleyo ndlela kuzuzwe i-lithium. Le ndlela ilula, futhi kungenzeka futhi ukulawula inani elifakwe ku-Li, elifanele ukusetshenziswa elabhorethri, kodwa ubungozi bubuye bucace kakhulu, ukusebenza kuyinkimbinkimbi kakhulu, futhi akukho nzuzo engokoqobo ekusetshenzisweni kwangempela. Enye indlela yokwengeza i-LI ngokweqile ngokusebenzisa izindlela zamakhemikhali.

Nakuba ubunzima bobuchwepheshe buphezulu uma kuqhathaniswa, ungangezi izinqubo ezengeziwe ekucutshungulweni kwebhethri, ngakho-ke inani elisebenzayo elengeziwe. Umqondo we-pre-lithium omuhle uvela eJalimane u-Giuliogabrielli et al, u-Giuliogabrielli ubike ngokokuqala ngqá ngendlela yamakhemikhali ngendlela yamakhemikhali, kodwa i-Giuliogabrielli iyafiseleka ukuhlanganisa i-Li1 + XNi0.5Mn1.

5O4 impahla (200mAh / g) Indlela impahla engu-lini0.5Mn1.5O4 (147 mAh / g) engumthamo obuyiselekayo kuze kube u-2017 u-Giuliogabrielli kanye namanye amathalente bathole amandla okusebenza kahle kokuqala kwebhethri le-Lithium-ion lamabhethri e-lithium-ion.

Ngemuva kwe-LI eyeqile yenqubo yokuqala yokushaja, impahla ye-Li1 + XNi0.5Mn1.5O4 yaguqulelwa ku-Li1 + XNi0 evamile.

5MN1.5O4 impahla kanye ne-lini0.5Mn1.

5MN1.5O4 izinto ngokulawula izilinganiso ezahlukene. Izinto ezixubile, ezingalawula ngokunembile isilinganiso se-Li, esinxephezela ngokuphelele i-electrode engalungile emgudwini obuyiselekayo phakathi nenqubo yokuqala yokushaja, okubuye kube yinto emisha kanye nokuphumelela komphelelisi omuhle.

I-Giuliogabrielli synthesis ye-Li1 + XNi0.5Mn1.5O4 impahla iyindlela yokuhlanganisa amakhemikhali, futhi ekuhlanganiseni kwezinto zokwakha, ipeni lisanda kufakwa ohlelweni lokuhlanganiswa, ngakho-ke lisebenza kakhulu, elisebenza ngempumelelo ukwelapha ukusebenza kahle kokuqala kwamabhethri e-SiOx lithium-ion.

Indlela. Kodwa-ke, i-LI eyeqile yengezwa ezintweni ezinhle futhi yakha isakhiwo esizinzile, futhi iqinisekisa ukuthi ukusebenza komjikelezo wezinto ezibonakalayo akuwona umthelela, u-Xiaobian uphinde wazisa zonke izihloko ezishicilelwe nguGiuliogabrielli, futhi akazange abone Giuliogabrielli Indlela isetshenziswa kwezinye izinto (isb, izinto ze-NCA kanye ne-NCM), ebuye ibonise indlela esuka ohlangothini, engafanelekile kuzo zonke izinto ze-electrode ezinhle. I-Vanchiappanaravindan yaseNdiya ithola ukuthi le ndlela ingasetshenziswa nasezintweni ze-LIVPO4F.

Indlela i-Vanchiappanaravindan eyindlela elula eshumekiwe ye-electrochemical, okungukuthi, i-LIVPO4F ingeyokuqala ibhethri, okwenza i-Li + ishumeke izinto ze-LIVPO4F. I-Li1.26VPO4F iyakhiwa, bese ibhethri liyahlukaniswa, i-Li1.

I-26VPO4F, kanye ne-negative electrode material (A-Fe2O3 eqashiwe), kusetshenziswa okokusebenza kwe-Li1.26VPO4F ukunxephezela okubalulekile kwe-A-Fe2O3 kunqubo yokuqala ye-lithium Umthamo ongabuyiseleki emuva (cishe u-503mAh / g), uthuthukisa kakhulu ukuminyana kwamandla ebhethri lonke. Kodwa-ke, Izinyathelo kufanele kuqala zakhe i-half-cell.

Ukusetshenziswa kwendlela ye-electrochemical yokushumeka i-Li + ezintweni ezinhle, ngakho empeleni ukubaluleka kokusetshenziswa kwangempela ekucubunguleni kwangempela, ngakho okulandelayo kuzoqhubeka nokuhlola indlela yokudlula indlela yamakhemikhali eqondile synthesis lithium okweqile LI1.26VPO4F impahla, eqaphela tonic positive. I-pre-lithium enhle iyindlela ekahle yokwelapha i-electrode engalungile ye-SiOx futhi ithuthukisa ukuminyana kwamandla ebhethri ye-lithium ion, kodwa ukushumeka i-LI eyeqile ku-electrode enhle nokugcina isakhiwo esizinzile, sibhekene nenselele enkulu, ngakho-ke i-pre-lithium yamanje enhle Kudingeka ukugxila ku-LIMN2O4 ne-Lini0.

Izinto ze-5Mn1.5O4 ezigxiliswe esakhiweni esimelana nomgogodla, futhi ingxenye ye-LI eyeqile ingasetshenziswa ezintweni ze-NCA ne-NCM, futhi akuthinti ukusebenza kwezinto ze-NCA ne-NCM. Kuzoba nenani elikhulu lokusebenzisa.

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