Kwaxelwa ukuba ekuqaleni kuka-Agasti, imboni entsha yemoto yamandla ibanjwe udliwano-ndlebe noSihlalo we-BYD u-Wang Chuanfu kwiNkomfa yomsebenzi wobuNjineli be-Hunan Shaoshan Sanji, eyabangela amaphephandaba abalulekileyo, iiwebhusayithi kunye nee-arhente, iingcali, kunye neendaba ezingaphezu kwekhulu kwiveki nje enye. Iingxelo zeendaba zasekhaya kunye namanqaku angamakhulu atsale umdla omkhulu kwimarike yemali. Ngaba ukuxinana kwamandla kuyenyuka ngenene? Ngaba i-lithium iron phosphate okanye i-lithium iron manganese phosphate? Ngaba izinto eziphathekayo ziya kutshintsha? Ngenxa yesi sizathu, abeendaba badlan’indlebe noDkt Weifeng Fan, umlawuli wezobugcisa we-Chengdu Xingneng New Materials Co., Ltd., i-Chengdu Institute of Organic Chemistry, i-Chinese Academy of Sciences.

I-lithium iron phosphate ayiyonto ikhethekileyo

ibhengeze iteknoloji entsha ye-BYD ye-lithium iron manganese phosphate ibhetri

UGqr Fan wathi akukho lithium iphosphate intsimbi kunye nezinye iintlobo ion zentsimbi, iphosphates compound, kunye nezichumisi, ammonium dihydrogen phosphate, ammonium phosphate, njl) ziyafana, kodwa izibalo ukunyibilika ezahlukeneyo, ngoko umntu Kusenokuthiwa ukusetyenziswa kwe-lithium iron phosphate kunye nezichumisi ze-phosphorus, kodwa ngokwenene, ukunyibilika kwe-lithium iron phosphate kubi kakhulu kwaye ayikwazi ukukhulula amacandelo e-phosphorus asebenzayo emhlabeni.

Umlandeli ukholelwa ukuba amaqela e-phosphate alolunye uhlobo lweekhompawundi ze-polyanionic (izinto ze-polyanionic anode), kuba amaqela e-phosphate ane-ion ye-oksijini eninzi kunye neendawo zokulungelelanisa, kwaye anokuthi enze isakhiwo se-polymer esine-steric kunye nee-ion zetsimbi zenguqu.

I-Polyanion yimbonakalo enkulu

ibhengeze iteknoloji entsha ye-BYD ye-lithium iron manganese phosphate ibhetri

Umlandeli wogqirha akanalo ixabiso eliphezulu, i-M imele enye intsimbi yangaphambili, i-manganese, i-cobalt, i-nickel, ithusi, i-chromium, njengawo nayiphi na into yentsimbi, i-M isiseko sesinyithi, isakhiwo sekhemikhali, sikhuselekile ukusebenzisa i-March kunye ne-lithium ion channel njengesixhobo. I-lithium ibhetri ye-Anode impahla, kodwa umthamo owahlukileyo, umbane, kunye nomlinganiselo wokusebenza, ubomi obahlukileyo …

I-asidi ye-phosphoric, i-lithium iron manganese okanye i-lithium iron manganese, akunjalo?

UDkt Weifeng Fan ukholelwa ukuba naluphi na uhlobo lwesihloko alubalulekanga. Undoqo ngumlinganiselo wentsimbi kwimanganese. Okwangoku, akukho mvumelwano ecacileyo kwizinto ezintathu ezifanayo (532, 111, 811, njl.). Phantsi kweziphi iimeko apho umlinganiselo wesinyithi kunye ne-manganese ubaluleke kakhulu. Kulungile? Ngenxa yokuzinza kunye nokusebenza kakuhle, isicelo sangempela kwixesha elizayo sinokuba yi-metal complex phosphates.

ibhengeze iteknoloji entsha ye-BYD ye-lithium iron manganese phosphate ibhetri

ibhengeze iteknoloji entsha ye-BYD ye-lithium iron manganese phosphate ibhetri

Ngaba ubunyani bobugcisa buyinyani?

Umthamo othile wethiyori we-lithium iron phosphate yi-170mAh / g, indlela yokukhupha yi-3.4V, kunye nobuninzi bamandla bezinto eziphathekayo yi-578Wh / kg. Umthamo wethiyori we-lithium manganese phosphate yi-171mAh / g, indlela yokukhupha yi-4.1V, kunye noxinano lwamandla ezinto eziphathekayo yi-701Wh / kg, eyi-21% ephezulu kuneyokuqala.

Ngokutsho kukaDkt. Fan Weifeng, kwinethiwekhi yebhetri yaseTshayina, ubuninzi bamandla ebhetri ye-lithium iron phosphate ekhoyo yi-90Wh/kg-130wh/kg. Ngokutsho kokuphuculwa kwe-21% kubuninzi bamandla wezinto eziphathekayo, nokuba i-lithium manganese phosphate ecocekileyo, uxinano lwamandla lunokufikelela kuphela Malunga ne-150Wh/kg, uxinano lwamandla okusebenzisa ibhetri ye-lithium manganese phosphate inokufikelela kuphela ngaphantsi kwe-150Wh/kg. Ukuthatha ibhetri ye-lithium yentsimbi ye-phosphate njengomzekelo, ukuba i-hypothetical best strategy (150Wh / kg) ithelekiswa neqhinga elibi kakhulu langoku (90Wh / kg), ukuphuculwa okuphezulu kunokuqikelelwa ukuba yi-67%, kodwa ngokucacileyo le ngcinga inokubakho kuphela. uqikelelo .