Tekinoroji yeKutarisira Kupisa Kwemotokari Dzemagetsi Dzakachena

Sisitimu yekutarisira kupisa yemotokari dzemagetsi dzakachena haingovimbisi chete kuti mutyairi agare zvakanaka pakutyaira, asiwo inodzora tembiricha, hunyoro, tembiricha yemhepo, nezvimwewo zvemukati meimba. Inonyanya kudzora tembiricha yebhatiri remagetsi. Kudzora tembiricha yebhatiri remagetsi ndekwekuona kuchengetedzeka kwemotokari yemagetsi. Chinhu chakakosha chinodiwa kuti mota dzishande zvakanaka uye zvakachengeteka.

Kune nzira dzakawanda dzekutonhodza mabhatiri emagetsi, dzinogona kukamurwa kuva kutonhodza kwemhepo, kutonhodza kwemvura, kutonhodza sinki yekupisa, kutonhodza zvinhu zvinochinja-chinja uye kutonhodza pombi yekupisa.

Kupisa kwakanyanya kana kuderera zvakanyanya kunokanganisa mashandiro emabhatiri e lithium-ion, asi tembiricha dzakasiyana dzine mhedzisiro yakasiyana pachimiro chemukati mebhatiri uye maitiro emakemikari ema ion.

Pakupisa kwakaderera, ionic conductivity ye electrolyte panguva yekuchaja nekuburitsa yakaderera, uye impedances pa positive electrode/electrolyte interface uye negative electrode/electrolyte interface yakakwira, izvo zvinokanganisa charge transfer impedance panzvimbo dze positive negative electrode uye kupararira kwe lithium ions mu negative electrode. speed, zvichizokanganisa zviratidzo zvakakosha zvakaita se battery rate discharge performance uye charge nekuburitsa zvakanaka. Pakupisa kwakaderera, chikamu che solvent mu electrolyte yebhatiri chichaoma, zvichiita kuti zviomere lithium ions kufamba. Sezvo tembiricha ichidzikira, electrochemical reaction impedance ye electrolyte salt icharamba ichiwedzera, uye dissociation constant yemaion ayo icharamba ichidzikirawo. Izvi zvinhu zvichakanganisa zvakanyanya. Movement rate yemaion mu electrolyte inoderedza electrochemical reaction rate; uye panguva yekuchaja bhatiri pakupisa kwakaderera, kuoma kwe lithium ion migration kuchaita kuti lithium ions dziderere kuita metallic lithium dendrites, zvichikonzera kuora kwe electrolyte uye kuwedzera concentration polarization. Uyezve, makona akapinza eiyi lithium metal dendrite anogona kubaya zviri nyore chikamu chemukati chebhatiri, zvichikonzera kupfupika kwemhepo mukati mebhatiri uye zvichikonzera tsaona yekuchengetedza.

Kupisa kwakanyanya hakuzokonzere kuti electrolyte solvent iome, uye hazvizoderedzi kupararira kwemaion emunyu e-electrolyte; pane kudaro, kupisa kwakanyanya kuchawedzera mashandiro emagetsi echinhu chacho, kuwedzera kupararira kwemaion, uye kukurumidzisa kufamba kwemaion e-lithium, saka neimwe nzira kupisa kwakanyanya kunobatsira kuvandudza mashandiro ekuchaja nekuburitsa mabhetri e-lithium-ion. Zvisinei, kana tembiricha yakakwira zvakanyanya, ichakurumidzisa maitiro ekuora kwefirimu reSEI, maitiro ari pakati pekabhoni yakaputirwa ne-lithium ne-electrolyte, maitiro ari pakati pekabhoni yakaputirwa ne-lithium ne-glue, maitiro ekuora kwe-electrolyte uye maitiro ekuora kwechinhu checathode, nokudaro zvichikanganisa zvakanyanya hupenyu hwebasa uye mashandiro ebhatiri. Shandisa mashandiro. Maitiro ari pamusoro apa anenge ese asingadzoreki. Kana kumhanya kwemaitiro kuchikurumidza, zvinhu zviripo zvemaitiro emagetsi anodzoserwa mukati mebhatiri zvichadzikira nekukurumidza, zvichiita kuti mashandiro ebhatiri adzikire munguva pfupi. Uye kana tembiricha yebhatiri ikaramba ichikwira kupfuura tembiricha yekuchengetedza bhatiri, maitiro ekuora kwe electrolyte nema electrodes anongoerekana aitika mukati mebhatiri, izvo zvinogadzira kupisa kwakawanda munguva pfupi, kureva kuti, kushaya simba kwebhatiri kuchaitika, izvo zvichaita kuti bhatiri riparadzwe zvachose. . Munzvimbo diki yebhokisi rebhatiri, kupisa kwacho kunonetsa kupera nekufamba kwenguva, uye kupisa kunoungana nekukurumidza munguva pfupi. Izvi zvinogona kukonzera kupararira nekukurumidza kwekushaya simba kwebhatiri, zvichiita kuti paki yebhatiri ipfute, ipfute kana kutoputika.