Ndeipi mamiriro ekusimudzira etitanium oxide lithium-ion bhatiri tekinoroji mukati uye nekunze?

Kubva pakugadzirwa kwemabhatiri e-lithium-ion muna 1991, graphite yanga iri iyo yakanyanya kunaka electrode zvinhu zvemabhatiri.Lithium titanate, serudzi rutsva rweasina kunaka electrode zvinhu zvelithium-ion mabhatiri, yakagamuchira kutariswa mukupera kwema1990 nekuda kwekuita kwayo kwakanaka.Semuenzaniso, lithium titanate zvinhu zvinogona kuchengetedza yakakwira dhigirii muchimiro chavo chekristaro panguva yekuiswa uye kubviswa kwelithium ion, ine shanduko shoma mulattice constants (vhoriyamu shanduko.
Iyi "zero strain" electrode zvinhu zvinowedzera zvakanyanya kutenderera hupenyu hwe lithium titanate mabhatiri.Lithium titanate ine yakasarudzika matatu-dimensional lithium ion diffusion chiteshi ine spinel chimiro, ine zvakanakira senge yakanakisa masimba masimba uye yakanakisa yepamusoro uye yakaderera tembiricha kuita.Kana ichienzaniswa necarbon negative electrode zvinhu, lithium titanate ine mukana wepamusoro (1.55V wakakwira kupfuura metallic lithium), izvo zvinoita kuti solid-liquid layer inowanzokurira pamusoro peelectrolyte uye carbon negative electrode isingaite pamusoro pelithium titanate. .
Zvinonyanya kukosha, zvakaoma kuti lithium dendrites iumbe pamusoro pe lithium titanate mukati memagetsi ekushandiswa kwebhatiri.Izvi zvinobvisa zvakanyanya mukana weiyo mapfupi maseketi akaumbwa ne lithium dendrites mukati mebhatiri.Saka kuchengetedzwa kwemabhatiri e-lithium-ion ane lithium titanate se electrode yakaipa iye zvino ndiyo yakakwirira pakati pemarudzi ose emabhatiri e-lithium-ion ayo munyori akaona.
Vazhinji veindasitiri vemukati vakanzwa kuti lithium bhatiri kutenderera hupenyu hwe lithium titanate kutsiva graphite sezvo iyo yakaipa electrode zvinhu inogona kusvika makumi ezviuru zvenguva, yakakwira zvakanyanya kupfuura yakajairwa echinyakare lithium-ion mabhatiri, uye inofa mushure mezviuru zvishoma chete kutenderera. .
Nekuda kwekuti vazhinji nyanzvi dze lithium-ion bhatiri nyanzvi hadzisati dzatombotanga kugadzira lithium titanate bhatiri zvigadzirwa, kana kuti vakangozviita kakati wandei uye vakapedzisira nekuchimbidza pavanosangana nematambudziko.Saka havana kukwanisa kudzikama uye kunyatsofunga kuti sei mabhatiri e lithium-ion akagadzirwa zvakakwana achikwanisa kupedzisa hupenyu hwe1000-2000 kuchaja uye kuburitsa mabhatiri?
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Ndicho chikonzero chikuru chehupenyu hupfupi hwemabhatiri e-lithium-ion nekuda kwechimwe chezvikamu zvayo zvakakosha - mutoro unonyadzisa we graphite negative electrode?Kana iyo graphite negative electrode ikatsiviwa ne spinel type lithium titanate negative electrode, iyo yakafanana lithium-ion bhatiri kemikari kemikari system inogona kuchovha makumi ezviuru kana kunyange mazana ezviuru zvenguva.
Pamusoro pezvo, kana vanhu vazhinji vachitaura nezve kushomeka kwesimba remabhatiri e-lithium titanate, vanofuratira chokwadi chiri nyore asi chakakosha: hupenyu hwekupedzisira kutenderera, kuchengetedzeka kunoshamisa, hunhu hwesimba hwakanakisa, uye hupfumi hwakanaka hwemabhatiri e-lithium titanate.Aya maitiro achave akakosha epakona kune iri kusimukira yakakura-yakawanda lithium-ion simba rekuchengetedza indasitiri.
Mumakore gumi apfuura kana zvakadaro, tsvakiridzo yelithium titanate bhatiri tekinoroji yanga ichikwira mukati mekunze nekunze.Iketani yayo yeindasitiri inogona kugoverwa mukugadzirira kwe lithium titanate zvinhu, kugadzirwa kwe lithium titanate mabhatiri, kubatanidzwa kwe lithium titanate bhatiri masisitimu, uye mashandisirwo avo mumotokari yemagetsi uye misika yekuchengetedza simba.
1. Lithium titanate zvinhu
Pasi rose, kune makambani anotungamira mukutsvagisa uye indasitiri yelithium titanate zvinhu, zvakaita seOti Nanotechnology yekuUnited States, Ishihara Industries yekuJapan, uye Johnson&Johnson wekuUnited Kingdom.Pakati pavo, iyo lithium titanate zvinhu inogadzirwa neAmerican titanium ine hunyanzvi hwekuita maererano nechiyero, chengetedzo, hupenyu hurefu hwebasa, uye tembiricha yakakwira uye yakaderera.Nekudaro, nekuda kwekurebesa uye kwakaringana nzira dzekugadzira, mutengo wekugadzira wakakwirisa, zvichiita kuti zviome kutengesa nekusimudzira.