Kufambira mberi nekukurumidza kwemotokari dzemagetsi nemidziyo yemagetsi ine simba guru kwawedzera kudiwa kwemabhatiri e-lithium-ion anochaja nekukurumidza. Kunyange zvakadaro, mabhatiri e-lithium-ion aripo iye zvino anotambura nekuora kwesimba zvakanyanya panguva yekuchaja nekukurumidza uye anogona kutokonzera kutadza kushanda zvakanaka, izvo zvinounza njodzi dzekuchengetedza. Izvi zvinonyanya kubva mukusagadzikana kwemagetsi pa-anode-electrolyte interface, zvichikonzera kugadzika kwesimbi-lithium pamusoro pebhatiri uye kusagadzikana kwekupisa kwakashata.
Mumakore achangopfuura, zvinhu zvine anode ine simba guru zvave nzira dzinovimbisa zvikuru dzekudzivirira kupararira kwe lithium uye kuumbwa kwezvikamu zvisina kusimba zve electrolyte interphase (SEI). Pasinei nesimba iri, zvinhu zvemazuva ano zvichiri kuganhurirwa ne conductivity ye ionic isingagutsi uye kugadzikana kwekupisa, izvo zvinoderedza simba rinobuda uye kuvimbika kwenguva refu.
Sekureva kwemishumo yenhau dzekunze, kuti vagadzirise matambudziko aya, timu yekutsvagisa inotungamirwa naProfessor Dongwook Han paSeoul National University of Science and Technology yakagadzira chinhu chisina kusimba chelithium titanium phosphate anode chine chimiro cheNASICON. Chinhu ichi chinozivikanwa nekugadzikana kwakanyanya muchimiro uye kupisa. Dhizaini yacho inogona kukonzera shanduko yezvikamu zvega zvega pasi pezvinhu zvinoshanda kuti zvipfuure nepakati pemiganhu yekinetic uye zviwane kushanda kwakasimba kwekuchaja nekukurumidza.
Zvakawanikwa pakutsvagurudza zvine chekuita nazvo zvakaburitswa mujenari rinonzi Advanced Functional Materials.
Kugadziriswa Kwepamusoro Kwekufambisa Ion Inokurumidza
Lithium titanium phosphate (LTP) ine chimiro che sodium super ionic conductor (NASICON), chine kugadzikana kwakanaka kwechimiro uye kupisa pamwe ne lithium ion diffusion channels. Kuti vashandise kugona kwayo kwakazara, vaongorori vakatora nzira yekugadzira isina stoichiometric uye vakawedzera nemaune chiyero che phosphorus (P) kune titanium (Ti). Kushomeka kwe titanium kwakadaro kunogadzira titanium phosphate (TPO) domains dziri pedyo nepamusoro pe LTP particles.
Nzvimbo idzi dzine TPO dzakapfuma dzinoshanda senzira dze kinetic dzinoshanda zvakanaka, dzichideredza simba rinovhara kutakurwa kwe lithium ion kuburikidza ne anode electrolyte interface uye dzichivaka nzira dzinokurumidza dzekutumira ma ion pedyo nenzvimbo dzezvimedu. Pamusoro pezvo, ma P‑O‑P bonds anochinjika zvikuru mukati meTPO framework anopa kushanduka kwechimiro kuti chigone kuchinja vhoriyamu panguva yekuchaja nekukurumidza uye kudzivirira chimiro cheNASICON kubva mukukuvadzwa kusingadzoreki.
Kushanda Kwakasimba Mumamiriro Ekukurumidza Kuchaja
Saka, mukuyedza kugona kwemuyedzo, chiratidzo chakakosha chinoongorora kugona kwekuchaja nekukurumidza, iyo OS-LTP-carbon (OS-LTP/C) composite anode yakachengetedza 86% inoshamisa yesimba rayo rekutanga pasi pe10C charger rate, nepo kugona kweiyo pristine LTP/C composite anode kwakadzikira zvakanyanya.
Chigadzirwa ichi chinopawo kugadzikana kwakanaka kwekufamba kwemhepo mushure mekufamba kwemitambo inodarika 250. Magadzirirwo emasero akazara anoratidza kushanda kwakanaka uye kushanda kwakafara nema cathode ane voltage yakawanda.
Nzira Yakafara Yekuenda Kumabhatiri Akachengeteka
"Nzira yedu inogadzira nzira itsva yekugadzira mabhatiri ekuchaja nekukurumidza, uye inogona kushandiswa zvakanyanya kune akawanda masisitimu ekuchengetedza simba mune ramangwana kusanganisira mabhatiri akasimba," akadaro Han. "Iyi nzira yekugadzira inogona kuita kuti mota dzemagetsi dzive nyore kushandisa nekupfupisa nguva yekuchaja, kuvandudza kuchengetedzeka uye kupa rutsigiro kumagridi emagetsi anodzokororwa."
Mukupedzisa, nzira iyi yekugadzira zvinhu zvisiri zvechimiro inogadzirisa chimwe chezvipingamupinyi zvikuru zvinosangana nemabhatiri anogona kuchajwazve uye inopa nzira yakanaka ye tekinoroji yekuchengetedza simba inochajwa nekukurumidza.
Nguva yekutumira: Nyamavhuvhu-07-2026