Ntchito yeniyeni ya magnesium oxide mu batri ya lithiamu

Magalasi a carbon elekitirodi opangidwa kuchokera ku nano oxide ali ndi makhalidwe osiyanasiyana, monga kukhazikika kwabwino kwa mabatire, kutsika kwapamwamba, kuyera kwakukulu, kulibe mpweya mu electrode Essence.Kusinthika kosavuta kwapamtunda, mphamvu yaying'ono ya haidrojeni ndi okosijeni, mtengo wotsika mtengo, etc. Komabe, izi zimanenedwa kawirikawiri, ndiye zotsatira zake za magnesium oxide mu mabatire a lithiamu ndi ziti?

Choyamba, kusankha 10-100g/L awiri a 10-100g/L awiri pakati 0.05-10 μm wa TiO2, SiO2, Cr2O3, ZrO2, CeO2, Fe2O3, BaSO, SiC, MgO etc insoluble particles olimba;zida zopangidwa ngati ma lithiamu ma ion zili ndi mawonekedwe a kulipiritsa bwino komanso kutulutsa bwino, kuchuluka kwamphamvu, komanso kukhazikika kwa kayendedwe ka magazi.

Kachiwiri, lifiyamu batire zabwino zakuthupi, nano -magnesium okusayidi monga conductive dopant, amapanga magnesium doped lithiamu chitsulo manganese mankwala mwa kukonza zifukwa, ndi zina kupanga nano-mapangidwe a zinthu zabwino elekitirodi.Kutha kwake kwenikweni kumafika 240mAh/g.Mtundu watsopano wa zinthu zabwino zama elekitirodi uli ndi mawonekedwe amphamvu kwambiri, chitetezo, komanso mitengo yotsika.Ndi oyenera madzi ndi colloidal lithiamu-ion mabatire, ang'onoang'ono ndi sing'anga-kakulidwe ma polima, makamaka mkulu -mphamvu mphamvu mabatire.

Kenako, mphamvu ndi mkombero ntchito ya spinel manganate lithiamu batire anali wokometsedwa.Mu lithiamu ion batire electrolyte ndi spinel lithiamu manganenate monga zinthu zabwino, nano-magnesium okusayidi anawonjezedwa monga deacidifier kuchotsa asidi, kuwonjezera kuchuluka ndi 0.5-20% ya kulemera kwa electrolyte.Pochotsa asidi mu electrolyte, zomwe zili mu asidi aulere a HF mu electrolyte zimachepetsedwa mpaka 20ppm, zomwe zimachepetsa kusungunuka kwa HF kukhala LiMn2O4, ndikuwonjezera mphamvu ndi kuzungulira kwa LiMn2O4.

Pomaliza, mu sitepe yoyamba, nano magnesium oxide monga pH regulator imasakanizidwa ndi yankho la alkali ndi yankho la ammonia ngati chopangira chophatikizira, ndikuwonjezera njira yosakanikirana yamadzi yokhala ndi cobalt ndi nickel salt kuti ipangitse ma hydroxides a Ni-CO. .

Gawo lachiwiri ndikuwonjezera lithiamu hydroxide ku Ni-CO composite hydroxide, ndikusakaniza kotenthetsera kutentha pa 280-420 ° C.

Mu sitepe yachitatu, mankhwala opangidwa mu sitepe yachiwiri ndi kutentha kutentha mu chilengedwe cha 650-750 ° C, chomwe chikugwirizana ndi nthawi ya co-precipitation.Wapakati tinthu kukula kwa lithiamu kompositi okusayidi amachepetsa kapena kachulukidwe chochulukira moyenerera.Pamene lithiamu kompositi okusayidi ntchito monga anode yogwira zakuthupi, mkulu mphamvu lithiamu ion yachiwiri batire akhoza analandira, ndipo kuchuluka kwenikweni kwa okusayidi magnesium amadalira chilinganizo enieni.