Ithini imeko yophuhliso lwetekhnoloji yebhetri ye-titanium oxide lithium-ion ngaphakathi nangaphandle?

Ukusukela kushishino lweebhetri ze-lithium-ion ngo-1991, igraphite ibe yeyona nto ibalaseleyo ye-electrode engalunganga kwiibhetri.I-Lithium titanate, njengohlobo olutsha lwezinto ezingalunganga ze-electrode kwiibhetri ze-lithium-ion, zafumana ingqwalasela ekupheleni kweminyaka yee-1990 ngenxa yokusebenza kwayo kakuhle.Ngokomzekelo, izinto ze-lithium titanate zinokugcina izinga eliphezulu lokuzinza kwi-crystal structure ngexesha lokufakwa kunye nokususwa kwe-lithium ion, kunye neenguqu ezincinci kwi-lattice constants (utshintsho lwevolumu
Le "zero strain" imathiriyeli ye-electrode yandisa kakhulu ubomi bomjikelezo weebhetri ze-lithium titanate.I-Lithium titanate ine-channel ye-lithium ion ekhethekileyo ye-lithium ion ekhethekileyo enesakhiwo se-spinel, esineenzuzo ezifana neempawu zamandla ezigqwesileyo kunye nokusebenza okuphezulu kunye nokushisa okuphantsi.Xa kuthelekiswa nezinto ze-carbon negative electrode, i-lithium titanate inesakhono esiphezulu (1.55V ngaphezu kwe-metallic lithium), nto leyo ekhokelela ekubeni umaleko oqinileyo wolwelo oludla ngokukhula kumphezulu we-electrolyte kunye ne-carbon negative electrode engenziyo kumphezulu we-lithium titanate. .
Okubaluleke ngakumbi, kunzima kwi-lithium dendrites ukuba yenze kumphezulu we-lithium titanate ngaphakathi koluhlu lombane wokusetyenziswa kwebhetri eqhelekileyo.Oku kakhulu kuphelisa ukubakho kweesekethe ezimfutshane ezenziwe yi-lithium dendrites ngaphakathi kwebhetri.Ngoko ukhuseleko lweebhetri ze-lithium-ion kunye ne-lithium titanate njengoko i-electrode engafanelekanga okwangoku iphakamileyo phakathi kwazo zonke iintlobo zeebhetri ze-lithium-ion umbhali azibonileyo.
Uninzi lwabangaphakathi kwishishini luvile ukuba ubomi bebhetri ye-lithium ye-lithium titanate ithatha indawo yegraphite njengoko i-electrode engalunganga inokufikelela kumashumi amawaka amaxesha, iphezulu kakhulu kuneebhetri zelithium-ion eziqhelekileyo, kwaye iya kufa emva kwemijikelo engamawaka ambalwa kuphela. .
Ngenxa yokuba uninzi lweengcali zebhetri ye-lithium-ion azizange ziqalise ukwenza iimveliso zebhetri ze-lithium titanate, okanye ziye zazenza amaxesha ambalwa kwaye zaphela ngokukhawuleza xa zidibana nobunzima.Ke abakwazanga ukuzola kwaye bacinge ngocoselelo malunga nokuba kutheni uninzi lweebhetri ze-lithium-ion ezenziwe ngokugqibeleleyo zinokugqiba ubomi be-1000-2000 yentlawulo kunye nemijikelo yokukhupha?
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Ngaba esona sizathu sisisiseko somjikelo omfutshane wobomi beebhetri ze-lithium-ion zendabuko ngenxa yesinye samacandelo ayo asisiseko - umthwalo ohlazo we-graphite negative electrode?Nje ukuba i-electrode engalunganga yegraphite ifakwe endaweni yohlobo lwe-spinel i-lithium titanate negative electrode, inkqubo yekhemikhali yebhetri ye-lithium-ion efana nqwa inokujikeleziswa amashumi amawaka okanye amakhulu amawaka amaxesha.
Ukongeza, xa abantu abaninzi bethetha ngoxinano lwamandla asezantsi ebhetri ye-lithium titanate, abayihoyi inyani elula kodwa ebalulekileyo: ubomi bomjikelo omde, ukhuseleko olungaqhelekanga, iimpawu zamandla ezibalaseleyo, kunye noqoqosho oluhle lweebhetri ze-lithium titanate.Ezi mpawu ziya kuba sisiseko esibalulekileyo kwishishini elikhulayo le-lithium-ion yokugcina amandla.
Kule minyaka ilishumi idlulileyo okanye kunjalo, uphando kwitekhnoloji yebhetri ye-lithium titanate belukhula ngaphakathi nangaphandle.I-chain chain chain iyakwazi ukwahlula ekulungiseleleni izinto ze-lithium titanate, ukuveliswa kweebhetri ze-lithium titanate, ukuhlanganiswa kweenkqubo zebhetri ze-lithium titanate, kunye nokusetyenziswa kwazo kwiimarike zombane kunye nokugcinwa kwamandla.
1. Izinto zeLithium titanate
Ngamazwe ngamazwe, kukho iinkampani ezikhokelayo kuphando kunye nokuveliswa kwezixhobo ze-lithium titanate, ezifana ne-Oti Nanotechnology evela e-United States, i-Ishihara Industries yaseJapan, kunye noJohnson & Johnson wase-United Kingdom.Phakathi kwabo, izinto ze-lithium titanate eziveliswa yi-titanium yaseMelika zisebenza kakuhle ngokwezinga, ukhuseleko, ubomi benkonzo ende, kunye nokushisa okuphezulu kunye nokuphantsi.Nangona kunjalo, ngenxa yobude obugqithisileyo kunye neendlela ezichanekileyo zemveliso, ixabiso lemveliso liphezulu, nto leyo eyenza kube nzima ukurhweba kunye nokukhuthaza.