Tlhahlobo ea Lisosa tsa Tahlehelo ea Mocheso oa Lithium Ion Battery Positive Materials

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - პორტატული ელექტროსადგურის მიმწოდებელი

Koloi ea motlakase e emetsoeng ke Tesra e sebelisetsoa ho sebelisa NCA, NCM811 kapa NCM622 lisebelisoa tse phahameng tsa nickel e le lithium ion battery positive material. Leha ho le joalo, lisebelisoa tsena tsa electrode tse nang le sebopeho se phahameng sa nickel li na le mathata a polokeho, sehlopha sa polokelo ea matla sa mohloli oa khanya oa Canada Dr. Zhou Wei, Dr.

Wang Jian, Wang Jian, Chemical Imaging Line Station le motlatsi oa moprofesa oa Xiamen University of Science and Technology, ka lekhetlo la pele, kabo ea mohato oa e rarahaneng composite eleketrode mocheso ho fihlela e rarahaneng composite eleketrode mocheso tsoa taolong, le tse ngata-mohato karohano ketsahalo pele le ka mor&39;a tahlehelo mocheso. Bohlokoa bo bonoa ke nano-level, &39;me ho fumanoa hore mocheso o tsoa taolong o ka amana haufi-ufi le kabo ea li-conductor le li-binders. Betri ea lithium ion e emetsoeng ke NCA, NCM811 kapa NCM622 e na le melemo ea bokhoni bo phahameng, theko e tlaase, le likotsi tsa tikoloho.

Hona joale, koloi ea motlakase e emetsoeng ke Tesla e sebelisoa. Leha ho le joalo, ho na le bothata boteng ba polokeho ea li-electrode tse ntle tsa nickel tse nang le li-electrode tse ntle, haholo-holo ka mocheso o phahameng oa ho senyeha ha lintho tse bonahalang, ho lokolla oksijene, ho baka ho tsoa taolong ha mocheso, ho fella ka ho phatloha ha betri. Ho ea ka pono ea khopolo ea motheo, kutloisiso e tebileng ea karohano ea li-electrode tsa boemo bo tiileng tlas&39;a taolo ea mocheso ke ea bohlokoa ho rarolla mathata a botsitso ba thepa ena ea tlhaho.

Ho latela pono ea tlhahlobo e sebetsang, boits&39;oaro ba karolo ea thuto bo arotsoe ka elektrode e kopaneng ea porous, &39;me e tsamaellana le phello ea boholo ba lisebelisoa tse ntle tsa elektrode, khokahano lipakeng tsa taolo ea kristale ea holim&39;a metsi, le filimi ea phallo ea holim&39;a metsi, ke motheo oa lipatlisiso le mohato oa sebele oa kopo. Mokhoa o hlophisitsoeng o kopantsoeng. Leha ho le joalo, mohopolo ona o tlameha ho ba le sebopeho se tsoetseng pele se bolelang ho phethahala.

Dr. Zhou Wei, Sehlopha sa Canadian Light Source Storage Group, le Dr. Wang Jian seteisheneng sa Chemical Imaging Line o sebetsa haufi-ufi le motlatsi oa moprofesa oa mongoli oa litsela oa Univesithi ea Theknoloji ea Xiamen ho qapa mokhoa oa ho hlahloba X-ray oa likarolo le khetho ea orbit, lik&39;hemik&39;hale le mekhoa ea elektronike.

MicroT (PEEM) e sebelisetsoa ho ithuta boitšoaro ba karohano ea karolo ea thermostatic acid lithium lithium laminate particles ka porous electrode. Mosebetsi ona o tlalehoa e le ntlha ea bohlokoa ea lipatlisiso ka mokhoa oa ChemicalCommunications. Ka seithuti sa in situ, bangoli ba ile ba sebelisa kabo ea karolo ea mocheso o rarahaneng oa li-electrode ho fihlela mocheso o rarahaneng oa motsoako oa elektrode o tsoa taolong, &39;me khokahano ea liketsahalo tse fapaneng tsa karohano ea mekhahlelo pele le ka mor&39;a taolo ea mocheso e ne e bonoa.

Pono ya maikutlo. Ho lahleheloa ke mocheso pele le ka mor&39;a karohano ea mohato ka tekanyo e le &39;ngoe ea electrode e bontša ho se lekane ho sa lebelloang. Sena se se nang uniformization le boholo ba likaroloana, sebopeho sa holim&39;a kristale ha se totobetse, empa kabo ea li-conductive agents le li-binders li amana haufi-ufi.

Lena ke lekhetlo la pele la ho finyella pono ea nano e arohanngoa ke likaroloana tse tšoanang pele le ka mor&39;a tahlehelo ea mocheso, &39;me e amahanngoa le tikoloho ea eona ea electrode. Sena se bolela ho tebisa ka ho eketsehileng boitšoaro ba ho falla ha mocheso oa thepa ea laminated ke ea bohlokoa, e loketseng bakeng sa ho khothalletsa mochine o sebetsang hantle, mokhoa oa ho fokotsa mekhoa e meng ea li-electrode ho ithuta mocheso o sa laoleheng. Sengoliloeng se qala ho sebelisa kutloisiso ea mantlha ea likarolo tsa PEEM mabapi le karolo ea elektrode, ho kenyeletsoa lithium cobaltate, PVDF, le kabo ea khabone e ntšo ea motlakase.

Pele mocheso oa tahlehelo, moemeli oa conductive le binder li tsoakane ka mokhoa o ts&39;oanang, empa agglomeration ena ha e lekane ka holim&39;a likaroloana tsa lithium cobaltate le likaroloana. Tahlehelo ea mocheso ea PVDF e hlakile, athe conductive carbon black e ntse e ajoa ka mokhoa o ts&39;oanang ho lithium cobalt acid ka mokhoa oa agglomeration. PEEM e ka fihlela qeto ea sebaka sa 100 nm, &39;me e ka etsoa setšoantšo holim&39;a 50 um electrode surface.

Qeto e phahameng ea sebaka le nako ea ho nka litšoantšo tse phahameng li fihlella litšoantšo tse phahameng tsa likaroloana tse ngata. Morpholoji ea likaroloana tsa lithium cobaltate e ka sebelisoa ho ithuta mokhoa oa ho falla ha mocheso oa likaroloana tse tšoanang tsa electrode pele le ka mor&39;a thermostat. Tšibollo ea morao-rao ea li-conductive agents, kabo ea binder e ka fella ka setšoantšo sa 1 sa lithium-ion battery positive material out of control.

The elemental distribution and correlation and correlation diagram of after the thermostat (A, B) (C, D) e arotsoe ka mong le e mong The absorption spectrum ea cobalt element ea pixel unit cobalt element e sebelisa mohato o le mong, ho kenyeletsa le spectral decomposition fitting of CO2 + (thermal out-controlled release oxygen formation +), CO3 +3 charge.LCO (LCO) e feletseng). Ho se leka-lekane ho hoholo ha karohano ea mekhahlelo ho bonahala hantle ho Figure C le D.

Haeba &39;mapa oa karohano ea mohato o fumanoa ka profil ea karolo e hlahisitsoeng, karohano ea mohato ona e na le kamano e kholo le kabo ea khabone e ntšo ea conductive pele le kamora tahlehelo ea mocheso. Thermostat e fokolitse haholo boholo ba karohano ea mekhahlelo. E fapane le liqeto tse fumanoeng ka ho tjhaja lik&39;hemik&39;hale ka mor&39;a ho tjhaja lik&39;hemik&39;hale ka ho tjhaja lik&39;hemik&39;hale nakong e fetileng.

Litlamorao tsa likaroloana tsa li-electrode, boholo, le sebopeho sa bokaholimo ba kristale li tlase haholo ho feta tikoloho ea likaroloana, haholo-holo phello ea moemeli oa conductive.