Lithium Titanate kye ki?

Lithium titanate kirungo kya okisayidi ekitabuddwamu nga kigatta lithium, titanium, ne oxygen, nga kisinga kusangibwa nga Li1Ti1O12 nga kirimu ensengekera ya spinel crystal. Ekintu kino ekya seramiki kikola okusinga nga ekintu kya anode mu bbaatule ez’enjawulo eza lithium-ion, nga kiwa obukuumi obw’enjawulo n’obulamu bw’enzirukanya wadde nga density y’amasoboza entono bw’ogeraageranya ne anode za graphite eza bulijjo.

Lithium titanate eriwo mu ngeri z’eddagala eziwerako, naye enkyukakyuka ya spinel Li4Ti2O12 y’esinga okukozesebwa mu bbaatule. Ekirungo kino kirimu ekisenge kya kiyuubi eky’ebitundu bisatu-nga amasannyalaze ga litiyamu gakwata ebifo bya tetrahedral 8a, ate amasannyalaze ga titaniyamu gajjuza ebifo bya octahedral 16d munda mu nkola ya okisigyeni. Enteekateeka eno etondawo abanoonyereza kye bayita ensengekera ya "zero-strain"-lattice efuna enkyukakyuka ya voliyumu etasukka 1% mu kiseera ky'enzirukanya y'okusannyalala n'okufulumya.

Ensengekera ya spinel esobozesa ion za lithium okutambula mu kirisitaalo nga zibuuka wakati w’ebifo eby’ekika kya tetrahedral ne octahedral. Mu kiseera ky’okufuuka amayinja, ekintu kikyuka okuva ku Li4Ti1O12 okudda ku Li1Ti1O12, nga kisuza ayoni za litiyamu endala ssatu buli yuniti ya formula. Okuyingiza kuno kubaawo ku 1.55V okusinziira ku kyuma kya lithium, nga kiri waggulu nnyo okusinga 0.1V eya bulijjo eya graphite anodes.

Ebika ebirala ebya lithium titanate mulimu lithium metatitanate (Li2TiO3), butto omweru ng’asaanuuka okusukka diguli 1,533 akozesebwa mu kukola keramiki ne nukiriya, ne ramsdellite lithium titanate (Li2Ti3O3), eraga nti esuubiza mu kunoonyereza okw’enjawulo ku bbaatule. Buli nkyukakyuka erina emigerageranyo egy’enjawulo egya titanium-ku-lithium n’ensengeka za kirisitaalo, ekivaamu eby’enjawulo eby’obutonde n’eby’amasannyalaze.

Lithium Titanate

Bwe ekozesebwa nga anode ya bbaatule, lithium titanate ekola mu ngeri ya njawulo nnyo okusinga graphite eya bulijjo. Ekintu kino tekikola layeri ya solid electrolyte interface (SEI) mu biseera by’enzirukanya ezisooka kubanga voltage yaayo ekola eya 1.55V etuula munda mu ddirisa ly’okutebenkera kw’amasannyalaze ag’obusannyalazo obusinga obungi. Standard graphite anodes zikola okumpi ne 0V okusinziira ku lithium, ekivaako okuvunda kw’obusannyalazo okukola oluwuzi lwa SEI olukuuma naye nga luziyiza.

Mu kiseera ky’okucaajinga, ayoni za litiyamu zisenguka okuva mu katodi nga ziyita mu nsengekera y’obusannyalazo ne ziyingira mu nsengekera ya anoodi ya litiyamu titanate. Enkola ya nanocrystalline eya Li4Ti2O12 egaba square mita nga 100 ez’obuwanvu bw’okungulu buli gram-okusukka emirundi 30 egya graphite. Ekitundu kino eky’okungulu ekigaziyiziddwa kisobozesa obusannyalazo okuyingira n’okufuluma amangu, nga kiwagira emiwendo gy’okucaajinga amangu.

Enzirukanya ekyusibwamu egoberera: Li1Ti2O12 + 3Li+ + 3e− ↔ Li₇Ti2O22. Obusobozi bw’enzikiriziganya butuuka ku 175 mAh/g, wadde ng’okussa mu nkola mu nkola kutuuka ku 150-170 mAh/g. Nga graphite egaba obusobozi obw’enzikiriziganya obw’oku ntikko ku 372 mAh/g, lithium titanate eliyirira okuyita mu busobozi bw’omutindo ogw’oku ntikko n’obuwangaazi.

Obusobozi bwa redox obusingako obwa titanium oxide bw’ogeraageranya ne graphite buleeta enkizo ey’obukuumi obuzaaliranwa. Lithium dendrites-empiso-nga ensengekera z’ebyuma eziyinza okuboola ebyawula bbaatule ne zireeta short circuits-tezitera kutondebwa ku ngulu za lithium titanate. Omugatte guno ogw’obukuumi gulaga nti mukulu nnyo ku nkola ez’omulembe-ez’omulembe nga anode eza bulijjo zissa mu kabi ak’okudduka mu bbugumu.

Battery za lithium titanate ziraga obulamu bw’enzirukanya obusinga obutono ku kemiko endala eza lithium-ion. Obutoffaali obw’obusuubuzi bulijjo butuuka ku nsengekera z’okufulumya 10,000 ku 30,000 ezijjuvu-nga obusobozi tebunnakendeera okutuuka ku bitundu 80% eby’olubereberye. Toshiba's 2024 specifications claims 45,000 cycles ku 10C rate olw'obutoffaali bwazo obw'amaanyi amangi-SCiB. Bw’ogeraageranya, bbaatule za lithium-ion ezikozesa ebintu ebya bulijjo zitera okumala enzirukanya 2,000-3,000.

Obuwangaazi buno busibuka mu nsengekera ya ziro-ensengekera. Graphite anodes zigaziwa nga 10% mu kiseera kya lithiation, ekivaako okunyigirizibwa okw’ebyuma okukutula obutundutundu n’okukendeeza ku busobozi mu nsengekera eziddiŋŋana. Enkyukakyuka ya lithium titanate ey’obunene obutono ekuuma obulungi bw’ensengekera ne bwe wabaawo enzirukanya enkumi n’enkumi.

Okucaajinga amangu kukiikirira engeri endala etegeeza. Battery za lithium titanate zisobola okucaajinga okuva ku 0% okutuuka ku 80% capacity mu ddakiika 6-10 awatali kuvunda nnyo. Ekibinja kya bbaasi z’amasannyalaze eza Chongqing eza 2011 zalaga obusobozi buno mu nkola-bbaasi 37 eza mmita kkumi na bbiri nga zirina enkola za lithium titanate eza kWh 80 nga zicaajinga mu bujjuvu mu ddakiika 10 nga zikozesa chajingi za kW 400. Obutoffaali bwa Toshiba obusembyeyo obw’amaanyi amangi bucaajinga okutuuka ku bitundu 80% mu ddakiika emu yokka ku sipiidi ya 48C.

Enkola y’ebbugumu eyawula lithium titanate ku ndala. Battery zino zikola mu ngeri eyesigika okuva ku diguli -40 okutuuka ku diguli 60 awatali kufiirwa maanyi ga kemiko endala mu mbeera ezisukkiridde. Ensengekera ya spinel enywevu ekuuma obutambuzi bwa ayoni mu bbanga lino, ekifuula tekinologiya ono okubeera omulungi mu bifo eby’okuteekebwamu mu Arctic, okukozesa mmotoka eziri mu mbeera ey’ebbugumu, n’ebyuma ebikozesebwa mu bwengula ng’okufuga ebbugumu kwongera obuzito n’obuzibu.

Enkola y’obukuumi mu mbeera z’okukozesa obubi esukkulumye ku bika bya lithium-ion ebirala. Obutoffaali bwa lithium titanate buyita mu kugezesebwa kw’okuyingira kw’emisumaali, okumenyaamenya, n’okujjuza okusukkiridde awatali muliro oba okubwatuka. The material’s thermal runaway threshold sits around 270℃, waggulu nnyo ku bbugumu erikola era waggulu okusinga kemiko ezisinga obungi ez’enjawulo. Enkola eno ey’obukuumi eraga nti yeetaagibwa nnyo ku bifo ebinene-ebiteekebwawo nga ebifo eby’okuterekamu giridi nga okulemererwa kw’obutoffaali bumu kuyinza okugwa.

Ekizibu ekisinga obunene ye density y’amasoboza. Battery za lithium titanate zikola 30-110 Wh/kg zokka mu gravimetric ate okutuuka ku 177 Wh/L volumetrically. Battery za lithium-ion eza bulijjo ezikozesa anodes za graphite ne nickel-manganese-cobalt cathodes zituuka ku 200-300 Wh/kg. Obuzibu buno obw’emirundi esatu ku kkumi kitegeeza nti bbaatule za lithium titanate zitwala ekifo kinene ate nga zizitowa nnyo okutereka amaanyi ag’enkanankana.

Densite y’amasoboza eya wansi elondoola butereevu ku vvulovumenti ekola. Obutoffaali bwa lithium titanate bukola 2.3-2.4V vvulovumenti ey’erinnya bw’ogeraageranya ne 3.6-3.7V ku lithium-ion eya bulijjo. Okufiirwa kuno okwa vvulovumenti-okukiikirira nga 1V-kuvvuunula butereevu ku kukendeeza ku kutereka amasoboza buli yuniti y’obuzito. Enkola nga obuzito n’obuzito bikulu nnyo, gamba ng’ebyuma ebikozesebwa n’emmotoka ez’amasannyalaze ezitambula ewala, mu bujjuvu tebisobola kukkiriza kusuubulagana kuno.

Ebisale bireeta ekiziyiza ekirala ekiziyiza okuzaala abaana mu bantu bangi. Obutoffaali bwa bbaatule za lithium titanate bugula wakati wa doola nga 1.50 buli watt-essaawa, ate obutoffaali bwa lithium iron phosphate bugula ddoola nga 0.40 buli watt-essaawa. Omutemwa gw’ebbeeyi gusibuka ku nsonga eziwerako: ebyetaago ebizibu eby’okusengejja, okufuga obunnyogovu mu ngeri entuufu mu kiseera ky’okukola, ebisookerwako eby’ebbeeyi ebisinziira ku titanium-, n’obungi bw’okufulumya obutono bw’ogeraageranya ne kemiko omukulu.

Enkola y’okukola ebintu yeetaaga okugifuga n’obwegendereza. Okusiba Li4Ti2O12 kyetaagisa ebbugumu lya diguli 600-850 okusinziira ku nkola y’okusengejja, ng’ebiseera by’okulongoosa biwanvu okusinga okuteekateeka obusannyalazo bwa graphite. Ebiwandiiko bya anatase oba rutile TiO2 bisobola okutondebwa singa okufuga ebbugumu kulaga nti tekumala, ekikendeeza ku nkola y’amasannyalaze. Nanostructured lithium titanate ey’omutindo ogwa waggulu yeetaaga ebyuma ebiyiiya n’obukugu.

Bbaasi z’amasannyalaze zikiikirira enkola esinga okuteekebwa mu by’obusuubuzi eya tekinologiya wa lithium titanate. Obusobozi bwa kemiko eno obw’okucaajinga amangu busobozesa okucaajinga mu mikisa ku siteegi za bbaasi, ekisobozesa bbaatule entonotono ezisasula ekibonerezo ky’obuzito. Microvast egaba bbaatule za lithium titanate eri abakola bbaasi z’amasannyalaze mu Bulaaya omuli ne Wrightbus’s New Routemaster double-deckers mu London, nga yuniti 1,000 zikola nga zirina enkola za bbaatule za kWh 18.

Enkola z’okutereka amaanyi ga giridi zeeyongera okukozesa lithium titanate okulungamya frequency n’obuweereza obuyambi. Altairnano yazimba ekyuma ekitereka amasannyalaze ekya MW 20/5 MWh ng’ekozesa tekinologiya wa lithium titanate. Ebiteekebwa bino bikulembeza obudde bw’okuddamu n’obulamu bw’enzirukanya okusinga obubonero bw’obungi bw’amasoboza-nga lithium titanate y’esinga. Battery zino zisobola okuddamu mu milliseconds ku nkyukakyuka za grid frequency ne zigumira emyaka 30-40 nga zivuga obugaali buli lunaku.

Enkola z’eggaali y’omukka zikozesa okugumira ebbugumu n’obukuumi bwa lithium titanate. Eggaali y’omukka eya Siemens Mireo Plus B eya bbaatule-yayingira mu mulimu mu April 2024 ng’ekozesa obutoffaali bwa Toshiba lithium titanate nga busuubirwa okumala emyaka 15-. Eggaali y’omukka eya British Rail Class 93 tri-mode ekozesa bbaatule za lithium titanate okutambulira ku bitundu bya layini ebitaliiko masannyalaze. Ennyonyi ya Japan eya N700S Shinkansen ekozesa tekinologiya ono okukola ku sipiidi entono mu bwangu mu biseera by’amasannyalaze agataataaganyizibwa.

Ebyuma ebikozesebwa mu byuma bikalimagezi byettanira lithium titanate mu mbeera ez’enjawulo ezeetaaga okucaajinga amangu oba okwesigika ennyo. Samsung's Galaxy Note series ekozesa bbaatule za lithium titanate mu S-Pen stylus, esobozesa okuyimirira okumala essaawa 10 okuva ku charge ya sikonda 40. Essaawa za Seiko Kinetic zakyusa capacitors ne zissaamu bbaatule za lithium titanate okutumbula obusobozi bw’okutereka amaanyi n’obulamu bw’okukola.

Ebyuma by’amakolero okuva ku mmotoka ezilung’amibwa mu ngeri ey’otoma okutuuka ku byuma eby’obujjanjabi ebiyitibwa mobile medical devices bilonda lithium titanate ng’obukuumi n’obulamu bwa cycle biwa obutuufu bw’okusaasaanya ssente ennyingi. Siteegi y’obudde eya Tempest ekozesa bbaatule ya lithium titanate eya mAh 1,300 ng’ecaajinga ng’eyita mu bikondo by’enjuba, nga yeetaaga omusana okumala essaawa 4 zokka buli luvannyuma lwa wiiki bbiri. Enkola z’amagye n’ez’omu bwengula zitwala omulimu gwa kemiko mu bbugumu erisukkiridde n’okugumira obulabe bw’omuliro ng’ekikulu.

Okutegeera lithium titanate w’ekwatagana, kiyamba okumanyabbaatule za lithium kye kiokutwaliza awamu-ze byuma ebitereka amasoboza ebiddamu okucaajinga ebitambuza amasannyalaze ga lithium wakati wa electrodes okutereka n’okufulumya amasoboza ag’amasannyalaze. Mu famire eno eya bbaatule ya lithium-ion, lithium titanate ekwata ekifo eky’enjawulo ekitegeezebwa ekintu kyayo ekya anode. Battery za lithium ezisinga zikozesa anodes za graphite ezigatta ne cathodes ez’enjawulo-lithium iron phosphate (LFP), nickel-manganese-cobalt (NMC), oba lithium cobalt oxide (LCO). Battery za lithium titanate zeeyawula nga zikozesa Li4Ti1O12 nga anode, mu ngeri entuufu nga zigatta ne lithium manganese oxide oba lithium iron phosphate cathodes.

Bw’ogeraageranya ne bbaatule za LFP, lithium titanate egaba obulamu bw’enzirukanya obuwanvu emirundi 5-10 n’okukola obulungi mu mbeera y’obudde ennyogovu-, naye egaba kimu kya kusatu kyokka ku kimu kya kusatu ku kitundu ky’amasoboza. Obutoffaali bwa LFP bugula ddoola nga 0.40/Wh okusinziira ku doola 1.50/Wh ku lithium titanate. Kemiko zombi zissa essira ku bukuumi okusinga obungi bw’amasoboza, ekizifuula eby’okulonda ebirala mu kukozesebwa ng’akabi k’omuliro kaleeta ebivaamu eby’amaanyi.

Battery za NMC ne NCA ze zisinga okukozesebwa mu mmotoka ez’amasannyalaze nga zeetaaga ebanga erisingako. Kemiko zino zituusa 200-250 Wh/kg-obungi bw’amasoboza ga lithium titanate emirundi ebiri oba esatu-ekisobozesa okutambula mayiro 300-500. Naye, zitambula emirundi 1,000-2,000 gyokka era zireeta obulabe obw’amaanyi obw’okudduka mu bbugumu. Mmotoka ez’amasannyalaze ezikulembeza ssente ezisaasaanyizibwa ku buli mayiro okumala ebbanga eddene n’okucaajinga amangu, gamba ng’ebidduka ebituusa ebintu mu bibuga ne bbaasi z’omu kibuga, ziyinza okukkiriza ekibonerezo kya lithium titanate eky’okutambula okuva mu bbanga olw’emigaso gy’emirimu.

Ku tekinologiya agenda okuvaayo nga bbaatule z’embeera enkalu-n’obutoffaali bwa sodium-ion, lithium titanate ekiikirira tekinologiya akuze, akakasiddwa mu by’obusuubuzi. Battery za solid-state zisuubiza amaanyi agasingako n’obukuumi naye zisigala mu nkulaakulana nga tezinnaba -ebyobusuubuzi nga zirina okusoomoozebwa mu kukola. Battery za sodium-ion ziwa ssente entono ez’ebintu naye nga zirina density y’amasoboza efaananako ne lithium titanate nga zirina obulamu bw’enzirukanya obutono. Okuteebereza akatale ka 2025-2033 pulojekiti ya lithium titanate okukuuma ebitundu by’akatale eby’enjawulo ate nga tekinologiya omupya akola ku nkola z’akatale akanene.

Lithium Titanate

Akatale ka bbaatule za lithium titanate mu nsi yonna kaatuuka ku buwumbi bwa ddoola 75.61-80.65 mu 2024 okusinziira ku kkampuni eziwera ezinoonyereza ku katale, ng’okuteebereza kuli wakati w’obuwumbi bwa ddoola 237-308 mu mwaka gwa 2033-2034. Kino kitegeeza emiwendo gy’okukula kw’omwaka okugatta ebitundu 10-14.4%, okusinga okuvugibwa okwettanira mmotoka ez’amasannyalaze, okugaziya okutereka emikutu, n’obwetaavu bw’ebikozesebwa ebisasula amangu.

Asia-Pacific y’esinga okufulumya n’okukozesa, ng’ekola ebitundu nga 60% ku bwetaavu bwa bbaatule za lithium titanate mu nsi yonna mu 2024. Enteekateeka ya China ey’emyaka etaano-ey’emyaka etaano-ey’omulundi ogwa 14 etunuulidde okukula kw’amasannyalaze agazzibwawo ebitundu 50% okuva mu 2020-2025, okutumbula okussa ssente mu kutereka emikutu gy’amasannyalaze ng’obulamu obuwanvu bwa lithium titanate buwa ebyenfuna ebirungi mu bulamu bwa pulojekiti obw’emyaka 20-30. Japan, amaka ga tekinologiya wa Toshiba owa SCiB, ekuuma enkola ey’amaanyi ey’okukozesa lithium titanate mu ntambula y’eggaali y’omukka n’okukozesa mu makolero.

North America erina akatale ka bitundu nga 36%, nga abakola ebintu abamanyiddwa nga Altairnano n’abazannyi abakyakula nga Grinergy bagaziya obusobozi bw’okufulumya. Ekitongole ky’amasoboza ekya Amerika obukadde bwa ddoola 258 kye yateeka mu tekinologiya wa bbaatule ow’omulembe mulimu okukola lithium titanate okukozesebwa mu ngeri ez’enjawulo nga lithium-ion eya bulijjo eraga nti temala.

Abakulu abakola bbaatule eno kuliko Toshiba (ekika kya SCiB), Altairnano (Nanosafe), Microvast (LpTO), Leclanché (TiBox), n’aba China abakola bbaatule omuli Yinlong Battery Technology eyagulibwa kkampuni ya Gree Electric. Okugaziya obusobozi bw’okufulumya essira kulissa ku kukendeeza ku nsaasaanya nga tuyita mu kulongoosa enkola n’ebyenfuna eby’omutindo okusinga enkyukakyuka ez’omusingi mu kemiko.

Endagiriro z’okunoonyereza ziggumiza okukola ku bizibu ebisookerwako ebya lithium titanate. Ttiimu mu nsi yonna zinoonyereza ku kukozesa eddagala lya niobium, magnesium oba ebintu ebirala okusobola okutumbula obutambuzi n’obusobozi. Enkyukakyuka mu ngulu omuli okusiiga kaboni ne nanostructuring bigenderera okulongoosa omulimu gw’omutindo. Enkola z’okusiba amayinja (overlithiation strategies) zinoonyereza ku kuvuga obugaali okusukka Li1⁄4O12 okukwata obusobozi obw’enjawulo, wadde nga kino kitta enkizo ya zero-strain.

Okukola lithium titanate kutera kugoberera amakubo g’okusengejja mu mbeera enkalu-embeera oba amazzi-embeera, nga buli limu lirina enkizo ez’enjawulo. Enkola ey’ekinnansi ey’embeera enkalu-ey’ebbugumu eringi-etabula lithium carbonate (Li2CO3) ne titanium dioxide (TiO2) mu migerageranyo gya stoichiometric, olwo n’eyokya omutabula ku diguli 700-850 okumala essaawa 10-24. Enkola eno eraga nti nnyangu era esobola okulinnyisibwa naye efulumya obutundutundu obunene ennyo (500nm-5μm) obulina obuwanvu bw’okungulu obutono.

Enkola za Sol-gel ziwa okufuga okulungi ku sayizi y’obutundutundu n’enkula y’obutundutundu. Abanoonyereza basaanuusa titanium alkoxides nga tetrabutyl titanate ne lithium hydroxide mu biwunyiriza ebiramu, olwo gel ne calcine ku 600-800℃. Ekivaamu lithium titanate kirimu obunene bw’obutundutundu wansi wa 200nm n’ebitundu eby’okungulu ebya waggulu ebisemberera 100 m2/g ekisobozesa okucaajinga amangu. Naye enkola za sol-gel zeetaaga okufuga obunnyogovu n’obwegendereza era ziraga nti za bbeeyi okusinga okusengejja mu mbeera enkalu.

Okusengejja okw’amazzi (hydrothermal synthesis) kuleeta lithium titanate ku bbugumu eri wansi ennyo (120-200℃) nga tukola ebisookerwako mu biwujjo by’amazzi ebinyigirizibwa. Enkola eno ekola nanotubes ne nanowires ezirina enkula ez’enjawulo, naye yeetaaga ebyuma eby’enjawulo ebya puleesa eya waggulu era ekola emigga gya kasasiro ow’amazzi ezeetaaga okulongoosebwa.

Enkola y’omunnyo ogusaanuuse eyimiriza ebirungo ebikola mu kinaabiro ky’omunnyo ekisaanuuka ekitono- (mu ngeri entuufu ebitabuddwa bya LiCl-KCl) ku diguli 500-700 . Ekisengejjero ky’amazzi kyanguyiza okusaasaana kwa ion okw’amangu, ne kikola lithium titanate eya kirisitaalo ennyo ng’erina eby’obusannyalazo ebirungi. Wadde ng’amasoboza-makola bulungi bw’ogeraageranya n’amakubo ag’ennono ag’embeera enkalu, enkola z’omunnyo ogusaanuuse zeetaaga enkola z’okuzzaawo omunnyo n’okuddamu okukola.

Okulondoola omutindo mu kiseera ky’okukola ebintu kiraga nti kikulu nnyo. X-ray diffraction ekakasa obulongoofu bwa phase, nga trace amounts ya anatase oba rutile TiO2 ekendeeza ku performance. Engabanya y’obunene bw’obutundutundu ekosa okukola kw’obusannyalazo n’omutindo gwa bbaatule-obunene nnyo era obutambuzi bubonaabona, butono nnyo era obutundutundu ne bukuŋŋaanyizibwa. Obunnyogovu bulina okusigala wansi wa 100 ppm okuziyiza okuvunda kw’obusannyalazo mu kiseera ky’okukuŋŋaanya obutoffaali.

Battery za lithium titanate zitera okutuuka ku 10,000 ku 30,000 full charge-discharge cycles nga tezinnaba kutuuka ku 80% capacity, nga ezimu ku high-power variants ezipimiddwa 45,000 cycles. Battery za lithium-ion eza bulijjo ezikozesa anodes za graphite zimala enzirukanya 2,000-3,000 mu mbeera ezifaanagana. Enkizo eno ey’obuwangaazi obw’emirundi 5-15 evvuunula obulamu bw’emirimu egy’emyaka 20-30 mu nkola n’okuvuga obugaali buli lunaku, bw’ogeraageranya n’emyaka 5-8 ku lithium-ion eya bulijjo.

Obuzibu mu bungi bw’amasoboza bufuula lithium titanate obutaba bwa mugaso eri ebyuma ebikozesebwa mu byuma ebikozesebwa. Battery ya smartphone ekozesa lithium titanate yandibadde nnene emirundi 2-3 era nga nzito okusinga dizayini eziriwo kati okusobola okuwa obudde obwenkanankana. Abaguzi bakulembeza sayizi n’obuzito bw’ekyuma okusinga emigaso gya lithium titanate egy’okucaajinga amangu n’okuwangaala. Omuwendo omunene gwongera okumalamu amaanyi okwettanira mu butale bw’abaguzi obufaayo ku miwendo.

Yee, bbaatule za lithium titanate zisobola okucaajinga amangu nnyo okusinga Tesla Superchargers eziriwo kati nga zikoleddwa bulungi. Obutoffaali bwa Toshiba obusembyeyo okucaajinga okutuuka ku bitundu 80% mu ddakiika 1-6 okusinziira ku mutindo gw’amaanyi, ate Tesla Superchargers zeetaaga eddakiika 15-20 ku mitendera gya chajingi egy’enjawulo. Naye kino kyetaagisa enkola ey’enjawulo ey’okucaajinga ey’amaanyi amangi (400+ kW) etasangibwa nnyo, era ekibonerezo ky’amaanyi g’amaanyi kitegeeza nti mmotoka za lithium titanate zandibadde n’obuwanvu obutono ku buzito bwa bbaatule obwenkanankana.

Ensonga ssatu erongoosa obukuumi bwa lithium titanate: Ekisooka, obusobozi bw’okukola obwa 1.55V buziyiza okutondebwa kwa lithium dendrite ekivaako short circuits ez’omunda mu anodes za graphite. Ekyokubiri, ekintu tekikola nsengekera ya busannyalazo nkalu eyinza okuvunda mu ngeri ey’obugumu obw’ebweru. Ekyokusatu, ekipimo ky’okudduka eky’ebbugumu ekya diguli 270 kisukka ebbugumu erisinga obungi ery’embeera y’okukozesa obubi, era ensengekera ya ziro-okunyigirizibwa eziyiza okwonooneka kw’ebyuma okuva mu kukubwa. Engeri zino zisobozesa obutoffaali bwa lithium titanate okuyita mu kugezesebwa kw’okuyingira kw’emisumaali n’okumenya awatali muliro oba okubwatuka.

Lithium Titanate

Lithium titanate ekwata ekifo ekitegeerekese naye nga kikula mu kutereka amaanyi. Tekinologiya ono tajja kudda mu kifo kya lithium-ion eya bulijjo mu ssimu ez’amaanyi oba mmotoka ez’ebanga eddene-nga obungi bw’amasoboza bwe busalawo okukozesebwa. Wabula, ekwata ku nkola nga obulamu bw’enzirukanya, obukuumi, okucaajinga amangu, oba okugumiikiriza ebbugumu biwa obutuufu bw’okukkiriza density y’amasoboza entono n’ebisale ebingi.

Enkola y’okukula esinga okutegeerekeka erabika mu ntambula ey’olukale, ng’okucaajinga emikisa kusobozesa bbaatule entonotono ezikendeeza ekitundu ku bibonerezo by’obuzito, era ng’okukyusa bbaatule ssente ezisukka mu myaka 12-15 egy’obulamu bw’emmotoka zisinga kwagala kemiko eziwangaala. Okutereka mu giridi kukiikirira okukwatagana okulala okw’obutonde, naddala ku mpeereza z’okulungamya emirundi ezeetaaga enkumi n’enkumi z’enzirukanya ezitali nnene buli lunaku mu makumi g’emyaka.

Enkulaakulana eyaakakolebwa mu nkola za hybrid eraga nti esuubiza-okugatta lithium titanate anodes ne cathodes ez’omulembe ez’obusobozi obw’amaanyi-, oba okukozesa lithium titanate mu mmotoka ezigaziyiziddwa mu bbanga-nga bbaatule entono etera okutambula. Nga minzaani y’okukola ebintu n’ebisale bikendeera, kemiko eyinza okugaziwa n’efuuka obutale obw’enjawulo obw’enjawulo. Kati, lithium titanate eraga nti kemiko ya bbaatule ennungi esinziira ddala ku byetaago by'okukozesa okusinga okugoberera tekinologiya omu "asinga" ku nkozesa zonna.