Mataki na ƙarshe na samar da baturin lithium shine yin ƙidi da duba baturin lithium don tabbatar da daidaiton tsarin baturi da kyakkyawan aikin na’urar baturi. Kamar yadda aka sani ga kowa, nau’ikan nau’ikan da suka ƙunshi batura tare da daidaito mai ƙarfi suna da tsawon rayuwar sabis, yayin da samfuran da ke da ƙarancin daidaito suna da saurin caji da wuce gona da iri saboda tasirin guga, kuma ana haɓaka haɓaka rayuwar batir ɗin su. Misali, iyawar baturi daban-daban na iya haifar da zurfafa zurfafa daban-daban na kowane igiyar baturi. Batura masu ƙananan ƙarfi da ƙarancin aiki za su kai ga cikakken cajin jihar a gaba. A sakamakon haka, batura tare da babban iya aiki da kyakkyawan aiki ba zai iya isa ga cikakken cajin jihar ba. Rashin daidaiton ƙarfin ƙarfin baturi yana haifar da kowane baturi a cikin layi ɗaya don yin cajin juna. Batirin da yake da mafi girman ƙarfin lantarki yana cajin baturin tare da ƙananan ƙarfin lantarki, wanda ke hanzarta lalata aikin baturi kuma yana cinye ƙarfin dukkan igiyoyin baturi. Baturi mai girman fitar da kai yana da babban asarar iya aiki. Matsakaicin adadin fitar da kai yana haifar da bambance-bambance a cikin halin da ake caji da ƙarfin lantarki na batura, yana shafar aikin igiyoyin baturi. Don haka waɗannan bambance-bambancen baturi, amfani na dogon lokaci zai shafi rayuwar gabaɗayan tsarin.

Hoton

FIG. 1.OCV- aiki ƙarfin lantarki – polarization ƙarfin lantarki zane

Rarraba baturi da dubawa shine don gujewa fitar da batura marasa daidaituwa a lokaci guda. Juriya na ciki na baturi da gwajin fitar da kai ya zama dole. Gabaɗaya magana, juriyar ciki na baturi ya kasu zuwa juriya na ciki ohm da juriya na ciki. Juriya na ciki na Ohm ya ƙunshi kayan lantarki, electrolyte, juriya na diaphragm da juriya na kowane bangare, gami da impedance na lantarki, impedance ionic da impedance lamba. Juriya na ciki yana nufin juriya da ke haifar da polarization yayin amsawar electrochemical, gami da juriya na ciki na electrochemical da juriya na ciki. Juriya na ohmic na baturin ana ƙaddara ta jimillar ɗawainiyar baturi, kuma juriya na polarization na baturin an ƙaddara shi ta ƙaƙƙarfan ƙayyadaddun lokaci na yaduwa na lithium ion a cikin kayan aiki na lantarki. Gabaɗaya, juriya na ciki na batirin lithium ba zai iya rabuwa da tsarin tsari, kayan da kansa, yanayi da sauran fannoni, waɗanda za a bincika da fassara su a ƙasa.

Na farko, tsarin tsari

(1) Abubuwan da aka yi amfani da su na lantarki masu kyau da marasa kyau suna da ƙananan abun ciki na wakili mai gudanarwa, wanda ya haifar da babban haɗari na watsawa na lantarki tsakanin kayan da mai tarawa, wato, babban ƙarfin lantarki. Batirin lithium yayi zafi da sauri. Koyaya, an ƙaddara wannan ta ƙirar baturin, alal misali, baturin wutar lantarki don la’akari da aikin ƙimar, yana buƙatar mafi girman adadin wakili mai gudanarwa, wanda ya dace da babban cajin kuɗi da fitarwa. Batirin ƙarfin yana da ɗan ƙara ƙarfin aiki, tabbatacce kuma ƙimar abu mara kyau zai ɗan ƙara girma. Ana yin waɗannan yanke shawara a farkon ƙirar baturin kuma ba za a iya canza su cikin sauƙi ba.

(2) akwai mai ɗaure da yawa a cikin dabarar lantarki mai kyau da mara kyau. Mai ɗaure gabaɗaya abu ne na polymer (PVDF, SBR, CMC, da sauransu) tare da aikin rufewa mai ƙarfi. Ko da yake mafi girma rabo na ɗaure a cikin asali rabo yana da amfani don inganta ƙarfin tsiri sanduna, yana da rashin amfani ga juriya na ciki. A cikin baturi zane don daidaita dangantakar dake tsakanin ɗaure da ɗaure sashi, wanda zai mayar da hankali a kan watsawa da ɗaure, wato, slurry shirye-shirye tsari, kamar yadda ya zuwa yanzu don tabbatar da watsawa da ɗaure.

(3) Abubuwan da ake amfani da su ba a tarwatsa su daidai ba, wakilin mai gudanarwa ba ya tarwatse sosai, kuma ba a kafa tsarin cibiyar sadarwa mai kyau ba. Kamar yadda aka nuna a cikin Hoto 2, A shine yanayin rashin tarwatsawar wakili, kuma B shine yanayin watsawa mai kyau. Lokacin da adadin wakili ya kasance iri ɗaya, canjin tsarin motsawa zai shafi tarwatsa wakili da juriya na ciki na baturi.

Hoto 2. Rashin tarwatsawa na wakili (A) Uniform dispersion of conductive agent (B)

(4) Ba a narkar da abin ɗaure gaba ɗaya ba, kuma wasu ƙwayoyin micelle sun wanzu, yana haifar da babban juriya na ciki na baturi. Komai busassun hadawa, juzu’in busassun bushewa ko tsarin hadewar rigar, ana buƙatar foda mai ɗaure gaba ɗaya narkar da shi. Ba za mu iya biyan inganci da yawa kuma mu yi watsi da manufar buƙatun cewa mai ɗaure yana buƙatar wani ɗan lokaci don a narkar da shi gabaɗaya.

(5) Ƙaƙƙarfan ƙarancin wutar lantarki zai shafi juriya na ciki na baturi. Matsakaicin adadin farantin wutar lantarki kadan ne, kuma porosity tsakanin barbashi da ke cikin farantin wutar lantarki yana da yawa, wanda ba shi da amfani ga watsa electrons, kuma juriya na ciki na baturi yana da yawa. Lokacin da takardan lantarki ya dunƙule da yawa, ƙwayoyin foda na lantarki za su iya ƙwanƙwasa su, kuma hanyar watsa wutar lantarki za ta daɗe bayan murkushewa, wanda ba shi da amfani ga caji da fitar da aikin baturi. Yana da mahimmanci don zaɓar madaidaicin ƙarancin ƙima.

(6) Bad waldi tsakanin tabbatacce da korau electrode lug da ruwa mai tarawa, kama-da-wane waldi, high baturi juriya. Ya kamata a zaɓi sigogin walda masu dacewa yayin waldawa, kuma sigogin walda kamar ƙarfin walda, amplitude da lokaci yakamata a inganta su ta hanyar DOE, kuma yakamata a tantance ingancin walda ta hanyar walƙiya da ƙarfi.

(7) ƙarancin iska ko ƙarancin lamination, rata tsakanin diaphragm, faranti mai kyau da faranti mara kyau yana da girma, kuma impedance ion yana da girma.

(8) Baturin electrolyte bai cika kutsawa cikin ingantattun na’urorin lantarki da na’urori masu kyau da kuma diaphragm ba, kuma alawus ɗin ƙira na electrolyte bai isa ba, wanda kuma zai haifar da babban impedance na baturi.

(9) Tsarin tsari ba shi da kyau, graphite anode surface SEI ba shi da kwanciyar hankali, yana rinjayar juriya na ciki na baturi.

(10) Wasu, kamar marufi mara kyau, rashin walda na kunun sandar sanda, zubar batir da yawan danshi, suna da tasiri sosai kan juriya na ciki na batirin lithium.

Na biyu, kayan

(1) Juriya na anode da anode kayan yana da girma.

(2) Tasirin kayan diaphragm. Kamar kaurin diaphragm, girman porosity, girman pore da sauransu. Kauri yana da alaƙa da juriya na ciki, ƙananan juriya na ciki ya fi ƙanƙanta, don cimma babban cajin wuta da fitarwa. Ƙarƙashin ƙaƙƙarfan mai yuwuwa ƙarƙashin takamaiman ƙarfin injina, mafi girman ƙarfin huda shine mafi kyau. Girman pore da girman ramuka na diaphragm suna da alaƙa da rashin ƙarfi na jigilar ion. Idan girman pore ya yi ƙanƙanta, zai ƙara haɓakar ion. Idan girman pore ya yi girma sosai, maiyuwa ba zai iya ware gabaɗayan foda mai kyau da mara kyau ba, wanda zai kai ga gajeriyar kewayawa ko kuma a soke shi ta lithium dendrite.

(3) Tasirin kayan lantarki. Ƙarfafawar ionic da danko na electrolyte suna da alaƙa da impedance ionic. Mafi girman ƙarfin canja wurin ionic, mafi girman juriya na ciki na baturin, kuma mafi tsanani da polarization a cikin caji da aiwatar da caji.

(4) Tasirin ingantaccen kayan PVDF. Babban rabo na PVDF ko babban nauyin kwayoyin zai kuma haifar da babban juriya na ciki na batirin lithium.

(5) Tasirin kayan aiki mai kyau. Zaɓin nau’in nau’in wakili shima maɓalli ne, kamar SP, KS, graphite conductive, CNT, graphene, da sauransu, saboda nau’ikan ilimin halittar jiki daban-daban, aikin ƙarfin baturi na lithium ya bambanta, yana da mahimmanci don zaɓar zaɓi. da conductive wakili tare da high conductivity kuma dace da amfani.

(6) tasirin abubuwan kunnuwa masu kyau da mara kyau. Kauri daga cikin kunnen sanda yana da bakin ciki, rashin daidaituwa ba shi da kyau, tsabtar kayan da aka yi amfani da su ba su da yawa, rashin ƙarfi ba shi da kyau, kuma juriya na ciki na baturi yana da girma.

(7) foil ɗin tagulla yana oxidized kuma yana walda shi da kyau, kuma kayan foil na aluminum yana da ƙarancin aiki ko oxide a saman, wanda kuma zai haifar da babban juriya na ciki na baturi.

Hoton

Sauran bangarorin

(1) Juriyar juriya na ciki na kayan aikin gwaji. Ya kamata a duba kayan aiki akai-akai don hana sakamakon gwajin da ba daidai ba ya haifar da rashin ingancin kayan aiki.

(2) Rashin juriya na ciki na baturi mara kyau wanda ya haifar da rashin aiki mara kyau.

(3) Rashin muhallin samarwa, kamar rashin sarrafa ƙura da danshi. Kurar taron bitar ta zarce ma’auni, zai haifar da haɓaka juriya na ciki na baturi, zubar da kai ya tsananta. Danshin zaman bita yana da yawa, kuma zai yi lahani ga aikin batirin lithium.