Indawo esetyenziswa kuyo ibhetri ye-polymer lithium ikwabaluleke kakhulu ekuphembeleleni ubomi bayo bomjikelo. Phakathi kwazo, ubushushu obuphakathi buyinto ebaluleke kakhulu. Ubushushu obuphakathi obuphantsi kakhulu okanye obuphezulu kakhulu bunokuchaphazela ubomi bomjikelo weebhetri ze-Li-polymer. Kwizicelo zebhetri yamandla kunye nokusetyenziswa apho ubushushu buyimpembelelo enkulu, ulawulo lobushushu lweebhetri ze-Li-polymer luyafuneka ukuphucula ukusebenza kakuhle kwebhetri.

Izizathu zokutshintsha kobushushu bangaphakathi kwibhetri yeLi-polymer

NgokubaIibhetri zeLi-polymer, ukuveliswa kobushushu bangaphakathi bubushushu bokusabela, ubushushu be-polarisation kunye nobushushu beJoule. Esinye sezizathu eziphambili zokunyuka kobushushu bebhetri yeLi-polymer kukunyuka kobushushu okubangelwa kukumelana kwangaphakathi kwebhetri. Ukongeza, ngenxa yokubekwa okuxineneyo komzimba weseli eshushu, ummandla ophakathi ubophelelekile ukuqokelela ubushushu obuninzi, kwaye ummandla womphetho uncinci, nto leyo enyusa ukungalingani kobushushu phakathi kweeseli nganye kwibhetri yeLi-polymer.

Iindlela zokulawula ubushushu bebhetri ye-polymer lithium

1. Uhlengahlengiso lwangaphakathi

I-sensor yobushushu iya kubekwa kwindawo emele kakhulu, utshintsho olukhulu lobushushu kwindawo, ingakumbi ubushushu obuphezulu nobuphantsi, kunye nombindi we-polymer ibhetri ye-lithium ubushushu obuqokelelweyo kwindawo enamandla ngakumbi.

1. Ummiselo wangaphandle

Ulawulo lokuphola: Okwangoku, xa kujongwa ubunzima besakhiwo solawulo lobushushu beebhetri zeLi-polymer, uninzi lwazo lusebenzisa indlela elula yokupholisa umoya. Kwaye xa kujongwa ukufana kokusasazwa kobushushu, uninzi lwazo lusebenzisa indlela yokungenisa umoya ehambelanayo.

1. Ulawulo lobushushu: eyona ndlela ilula yokufudumeza kukongeza iipleyiti zokufudumeza phezulu nasezantsi kwebhetri yeLi-polymer ukuze kuphunyezwe ukufudumeza, kukho umgca wokufudumeza ngaphambi nasemva kwebhetri nganye yeLi-polymer okanye ukusetyenziswa kwefilimu yokufudumeza ejikelezileyoIbhetri ye-Li-polymeryokufudumeza.

Izizathu eziphambili zokunciphisa amandla eebhetri ze-lithium polymer kumaqondo obushushu aphantsi

1. Ukuqhuba kwe-electrolyte kakubi, ukumanzisa kakubi kunye/okanye ukungena kakuhle kwe-diaphragm, ukuhamba kancinci kwee-ion ze-lithium, izinga lokudluliselwa kwetshaja elicothayo kwi-interface ye-electrode/electrolyte, njl.

2. Ukongeza, i-impedance ye-membrane ye-SEI iyanda kumaqondo obushushu aphantsi, nto leyo enciphisa isantya se-ions ze-lithium ezidlula kwi-interface ye-electrode/electrolyte. Esinye sezizathu zokwanda kwe-impedance yefilimu ye-SEI kukuba kulula ukuba ii-ion ze-lithium ziphume kwi-electrode engalunganga kumaqondo obushushu aphantsi kwaye kube nzima ukuzifaka.

3. Xa itshaja, i-lithium metal iya kuvela ize iphendule kunye ne-electrolyte ukuze yenze ifilimu entsha ye-SEI ukuze igubungele ifilimu yokuqala ye-SEI, nto leyo eyandisa ukuthintela kwebhetri ngaloo ndlela ibangela ukuba amandla ebhetri ehle.

Ubushushu obuphantsi ekusebenzeni kweebhetri ze-lithium polymer

1. ubushushu obuphantsi kwitshaja kunye nokusebenza kokukhupha

Njengoko ubushushu busiya buncipha, i-voltage yokukhupha umbane kunye nomthamo wokukhupha umbaneiibhetri ze-polymer ze-lithiumZiyancipha, ingakumbi xa ubushushu buyi--20 ℃, amandla okukhupha ibhetri kunye nombane oqhelekileyo wokukhupha umbane wehla ngokukhawuleza.

2. Ubushushu obuphantsi ekusebenzeni komjikelo

Umthamo webhetri ubola ngokukhawuleza xa i--10℃ ikwi--10, kwaye umthamo uhlala u-59mAh/g kuphela emva kwemijikelo eli-100, kunye nokubola komthamo we-47.8%; ibhetri ekhutshwe kubushushu obuphantsi ivavanywa kubushushu begumbi ukuze itshaje kwaye ikhuphe, kwaye ukusebenza kokubuyisela umthamo kuyahlolwa ngeli xesha. Umthamo wayo ubuyiselwe kwi-70.8mAh/g, kunye nokulahleka komthamo we-68%. Oku kubonisa ukuba umjikelo wobushushu obuphantsi webhetri unempembelelo enkulu ekubuyiselweni komthamo webhetri.

3. Impembelelo yobushushu obuphantsi ekusebenzeni kokhuseleko

Ukutshaja kwebhetri ye-polymer lithium yinkqubo yee-ion ze-lithium eziphuma kwi-electrode e-positive ngokusebenzisa ukufuduka kwe-electrolyte okufakwe kwizinto ezingalunganga, ii-ion ze-lithium ukuya kwi-polymerization ye-electrode engalunganga, ngee-athomu ezintandathu zekhabhoni zibamba i-ion ye-lithium. Kumaqondo obushushu aphantsi, umsebenzi we-chemical reaction uyancitshiswa, ngelixa ukufuduka kwee-ion ze-lithium kucotha, ii-ion ze-lithium kumphezulu we-electrode engalunganga azifakwanga kwi-electrode engalunganga zincitshisiwe zibe yi-lithium metal, kwaye ukuna kwemvula kumphezulu we-electrode engalunganga kwenza i-lithium dendrites, enokugqobhoza ngokulula i-diaphragm ebangela i-short circuit kwibhetri, enokwenzakalisa ibhetri kwaye ibangele iingozi zokhuseleko.

Okokugqibela, sisafuna ukukukhumbuza ukuba iibhetri ze-lithium polymer kungcono zingatshajwa ebusika kumaqondo obushushu aphantsi, ngenxa yamaqondo obushushu aphantsi, ii-ion ze-lithium ezifakwe kwi-electrode engalunganga ziya kuvelisa iikristale ze-ion, zigqobhoze ngqo i-diaphragm, nto leyo ebangela ukuba isekethe encinci ibe mfutshane, nto leyo echaphazela ubomi kunye nokusebenza, ukuqhuma okukhulu ngqo. Ngoko ke abanye abantu babonakalisa ukuba i-polymer yasebusika ayinakutshajwa, oku kungenxa yokuba inkqubo yolawulo lwebhetri ibangelwa kukukhuselwa kwemveliso.