Indlela echanekileyo yezinto ezintle ze-electrode pre-lithiuming unyango lweengxaki ze-lithium?

著者：Iflowpower – Fornitur Portable Power Station

Esi sihloko se-lithium sele sithetha ngobomi obudala. Senze isishwankathelo esilula sokuxhathisa i-lithium yangoku. Ngokubanzi, i-metal Li powder kunye ne-Li foil pen zisetyenziselwa ukuphumeza iteknoloji ye-tonifying engalunganga, kwaye ikwangoku Indlela eqinile esetyenziswa ngumbane we-lithium-ion umenzi webhetri, kodwa imiba yokhuseleko kunye neendleko eziphezulu ziingxaki zeMetal Li lys.

Ngokwahlukileyo, ukuphakama okulungileyo kwenkqubo ye-lithium kulungile, ayitshintshi inkqubo ekhoyo, kodwa ukukhula kobugcisa kuphantsi, kwaye abavelisi bezinto ezifanelekileyo baya kuqalisa iimveliso ezihambelanayo. Isisombululo esihle se-electrode Ukongeza ekongezeni inani elincinci lomthamo ophezulu kwinkqubo ye-electrode elungileyo, kukho indlela yokongeza izinto ezingaphezulu kwe-Li ukusuka kwi-positive electrode material synthesis, ngaloo ndlela igcina i-LI engaphezulu kwizinto ezilungileyo, kwintlawulo yokuqala I-LIs engaphezulu kwinkqubo inokukhulula izinto ze-LI ezongeza ukusetyenziswa kwe-electrode engalunganga, ngaloo ndlela kufezekiswa injongo yokuphucula ukusebenza kakuhle kokuqala. Ngeendlela ezimbini zokongeza i-lithium engaphezulu kwezinto eziphathekayo ze-electrode, eyokuqala kukuba kwizinto eziphathekayo ze-electrode ezifakwe yi-electrochemical reaction, izinto eziphathekayo ze-electrode ngokuqhelekileyo zenziwe zibe yi-semi-battery, kwaye izinto eziphathekayo ze-electrode zidibene.

Izinto ezintle ze-electrode zenziwa zibe yibhetri iyonke kwi-electrode engalunganga ngokubanzi, ngaloo ndlela ifezekisa i-lithium. Le ndlela ilula kakhulu, kwaye iyakwazi ukulawula inani elifakwe kwi-Li, elilungele ukusetyenziswa kwibhubhoratri, kodwa ukungonakali kucacile kakhulu, ukusebenza kuyinkimbinkimbi, kwaye akukho xabiso elisebenzayo kwi-machining yangempela. Enye indlela kukongeza i-LI engaphezulu ngeendlela zemichiza.

Nangona ubunzima bobugcisa buphezulu kakhulu, musa ukongeza iinkqubo ezongezelelweyo ekusetyenzweni kwebhetri, ngoko ke ixabiso elisebenzayo. Ingcamango ye-pre-lithium emihle ivela eJamani uGiuliogabrielli et al, u-Giuliogabrielli wabika okokuqala nge-chemical method for first time by chemical method, kodwa u-Giuliogabrielli unqweneleka ukudibanisa i-Li1 + XNi0.5Mn1.

5O4 izinto (200mAh / g) Indlela lini0.5Mn1.5O4 izinto (147 mAh / g) umthamo ukuguqulwa de 2017 Giuliogabrielli kunye nezinye iitalente baye bafumanisa ukuba amandla ebhetri Lithium-ion yokuqala ibhetri lithium-ion.

Emva kokugqithiswa kwe-LI yenkqubo yokuqala yokutshaja, i-Li1 + XNi0.5Mn1.5O4 impahla yaguqulelwa kwi-Li1 + XNi0 eqhelekileyo.

5MN1.5O4 izinto kunye ne-lini0.5Mn1.

Izixhobo ze-5MN1.5O4 ngokulawula imilinganiselo eyahlukeneyo. Izinto ezixutywe, ezinokuthi zilawule ngokuchanekileyo umlinganiselo we-Li, ohlawulela ngokupheleleyo i-electrode engafanelekanga kwi-reversible capacity ngexesha lenkqubo yokuqala yokutshaja, ekwayinto entsha kunye nokuphumelela kokuncedisa okulungileyo.

I-Giuliogabrielli synthesis ye-Li1 + XNi0.5Mn1.5O4 impahla yindlela yokudibanisa imichiza, kwaye kwi-synthesis yezinto eziphathekayo, ipeni isanda kufakwa kwinkqubo yokudibanisa, ngoko ke iyasebenza ngakumbi, esebenzayo ukuphatha ukusebenza kakuhle kokuqala kwe-SiOx ibhetri ye-lithium-ion.

Indlela. Nangona kunjalo, i-LI engaphezulu yongezwa kwizinto ezintle kwaye zenze isakhiwo esizinzile, kwaye siqinisekise ukuba ukusebenza komjikelo wezinto eziphathekayo akuyiyo impembelelo, u-Xiaobian uyawaxabisa onke amanqaku apapashwe nguGiuliogabrielli, kwaye akazange abone uGiuliogabrielli Indlela isetyenziswe kwezinye izinto (umzekelo, izinto ze-NCA kunye ne-NCM), ebonisa kwakhona indlela esuka kwicala, ayifanelekanga kuzo zonke izinto eziphathekayo ze-electrode. UVanchiappanaravindan waseIndiya ufumanisa ukuba le ndlela ingasetyenziswa nakwizinto ze-LIVPO4F.

Indlela iVanchiappanaravindan yindlela elula edibeneyo ye-electrochemical, oko kukuthi, i-LIVPO4F iqala kwibhetri, eyenza i-Li + ifake izinto ze-LIVPO4F. I-Li1.26VPO4F yenziwe, kwaye ibhetri iyachithwa, i-Li1.

I-26VPO4F, kunye nezinto ezimbi ze-electrode (i-A-Fe2O3 eqeshwe), isebenzisa izinto ze-Li1.26VPO4F ukuhlawulela izinto ze-A-Fe2O3 kwinkqubo yokuqala ye-lithium Umthamo ongaguqukiyo (malunga ne-503mAh / g), uphucula kakhulu ubuninzi bamandla ebhetri yonke. Nangona kunjalo, amaNyathelo kufuneka aqale enze isiqingatha seseli.

Ukusetyenziswa kwendlela ye-electrochemical yokufakela i-Li + kwizinto eziphathekayo, ngoko ngokwenene ukubaluleka kokusetyenziswa kokwenene ekuqhutyweni kwangempela, ngoko okulandelayo kuya kuqhubeka nokuphonononga indlela yokudlula indlela yekhemikhali echanekileyo synthesis lithium engaphezulu kwe-LI1.26VPO4F, ukuqonda i-tonic efanelekileyo. I-pre-lithium efanelekileyo yindlela efanelekileyo yokuphatha i-electrode ye-SiOx engathandekiyo kwaye ikhulise ubuninzi bamandla ebhetri ye-lithium ion, kodwa ukubethelela i-LI engaphezulu kwi-electrode efanelekileyo kunye nokugcina isakhiwo esizinzile, esijongene nomngeni omkhulu, ngoko ke i-pre-lithium ekhoyo yangoku Kuyimfuneko ukugxila kwi-LIMN2O4 kunye ne-Lini0.

Izinto ze-5Mn1.5O4 ezigxininiswe kwisakhiwo esinganyangekiyo somqolo, kwaye i-LI element engaphezulu ingasetyenziselwa izinto ze-NCA kunye ne-NCM, kwaye ayichaphazeli ukusebenza kwe-NCA kunye ne-NCM. Kuya kuba nexabiso elikhulu lokusebenzisa.

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