Chiyambireni mabatire a lithiamu-ion mu 1991, graphite yakhala chinthu chachikulu kwambiri chamagetsi pamabatire.Lithium titanate, monga mtundu watsopano wa zinthu zoipa elekitirodi kwa mabatire lithiamu-ion, analandira chidwi kumapeto 1990s chifukwa cha ntchito zake zabwino kwambiri.Mwachitsanzo, zida za lithiamu titanate zimatha kukhalabe okhazikika pamapangidwe awo a kristalo pakuyika ndi kuchotsedwa kwa ma lithiamu ion, ndikusintha pang'ono kwa ma lattice constants (kusintha kwa voliyumu).
Izi "zero kupsyinjika" elekitirodi zinthu kwambiri amakulitsa mkombero moyo wa mabatire lithiamu titanate.Lithium titanate ili ndi njira yapadera yolumikizira lithiamu ion yamitundu itatu yokhala ndi mawonekedwe a spinel, omwe ali ndi maubwino monga mawonekedwe abwino kwambiri amphamvu komanso magwiridwe antchito apamwamba komanso otsika kwambiri.Poyerekeza ndi carbon negative elekitirodi zipangizo, lithiamu titanate ali ndi kuthekera apamwamba (1.55V apamwamba kuposa zitsulo lifiyamu), zomwe zimabweretsa olimba-zamadzimadzi wosanjikiza kawirikawiri amakula pamwamba pa electrolyte ndi mpweya zoipa elekitirodi osati kupanga pamwamba pa lithiamu titanate. .
Chofunika kwambiri, ndizovuta kuti lithiamu dendrites ipange pamwamba pa lithiamu titanate mkati mwa voteji yogwiritsira ntchito batire.Izi makamaka zimachotsa kuthekera kwa mabwalo amfupi opangidwa ndi lithiamu dendrites mkati mwa batire.Chifukwa chake chitetezo cha mabatire a lithiamu-ion okhala ndi lithiamu titanate monga electrode yoyipa pakadali pano ndiyokwera kwambiri pakati pa mitundu yonse ya mabatire a lithiamu-ion omwe wolemba adawona.
Makampani ambiri Insider anamva kuti lifiyamu batire mkombero moyo wa lifiyamu titanate m'malo graphite monga zinthu zoipa elekitirodi akhoza kufika masauzande nthawi, apamwamba kwambiri kuposa chikhalidwe mabatire lifiyamu-ion, ndipo adzafa pambuyo m'zinthu zikwi zingapo. .
Chifukwa chakuti akatswiri ambiri odziwa batire a lithiamu-ion sanayambe kwenikweni kupanga zinthu za batri ya lithiamu titanate, kapena amangowapanga kangapo ndipo adatha mwachangu akakumana ndi zovuta.Kotero iwo sakanakhoza kukhala chete ndi kuganizira mofatsa chifukwa ambiri mwangwiro zopangidwa chikhalidwe lithiamu-ion mabatire akhoza kokha kumaliza moyo wa 1000-2000 mlandu ndi kutulutsa m'zinthu?
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Kodi chifukwa chachikulu cha moyo waufupi mkombero wa chikhalidwe mabatire lifiyamu-ion chifukwa chimodzi mwa zigawo zake zofunika - katundu manyazi graphite zoipa elekitirodi?Kamodzi graphite negative elekitirodi m'malo ndi spinel mtundu lifiyamu titanate negative elekitirodi, kwenikweni ofanana lifiyamu-ion batire dongosolo mankhwala akhoza panjinga makumi masauzande kapena mazana masauzande nthawi.
Kuphatikiza apo, anthu ambiri akamalankhula za kuchepa kwa mphamvu zamabatire a lithiamu titanate, amanyalanyaza mfundo yosavuta koma yofunika: moyo wautali wautali, chitetezo chodabwitsa, mphamvu zabwino kwambiri, komanso chuma chabwino cha mabatire a lithiamu titanate.Makhalidwewa adzakhala mwala wapangodya wofunikira pamakampani akuluakulu osungira mphamvu a lithiamu-ion.
M'zaka khumi zapitazi, kafukufuku wokhudza ukadaulo wa batri wa lithiamu titanate wakhala akuchulukirachulukira mdziko muno komanso padziko lonse lapansi.Unyolo wake wamafakitale ukhoza kugawidwa pokonzekera zida za lithiamu titanate, kupanga mabatire a lithiamu titanate, kuphatikiza machitidwe a batri a lithiamu titanate, ndikugwiritsa ntchito kwawo pamagalimoto amagetsi ndi misika yosungira mphamvu.
1. Lithium titanate zakuthupi
Padziko lonse lapansi, pali makampani otsogola pakufufuza ndi kukulitsa zida za lithiamu titanate, monga Oti Nanotechnology waku United States, Ishihara Industries waku Japan, ndi Johnson&Johnson waku United Kingdom.Pakati pawo, zinthu za lithiamu titanate zopangidwa ndi titaniyamu yaku America zimakhala ndi ntchito yabwino kwambiri pamlingo, chitetezo, moyo wautali wautumiki, komanso kutentha kwambiri komanso kutsika.Komabe, chifukwa cha njira zopangira nthawi yayitali komanso zolondola, mtengo wake ndi wokwera kwambiri, zomwe zimapangitsa kuti zikhale zovuta kugulitsa ndi kulimbikitsa.
Nthawi yotumiza: Mar-14-2024