Ho ile ha tlalehoa hore mathoasong a August, indasteri e ncha ea likoloi tsa motlakase e ile ea buisana le Molula-setulo oa BYD Wang Chuanfu Sebokeng sa Mosebetsi oa Boenjiniere oa Hunan Shaoshan Sanji, se ileng sa baka likoranta tsa bohlokoa tsa tšireletso, liwebsaete le baemeli, litsebi, le litaba tse fetang lekholo ka beke e le ‘ngoe feela. Litlaleho tsa mecha ea litaba ea lapeng le lihlooho tse makholo le tsona li hohetse tlhokomelo e kholo ho tsoa ‘marakeng oa lichelete. Na matla a matla a ntse a eketseha? Na ke lithium iron phosphate kapa lithium iron manganese phosphate? Na lintho tse bonahalang li tla fetoha? Ka lebaka lena, mecha ea litaba e ile ea buisana le Dr. Weifeng Fan, mookameli oa theknoloji oa Chengdu Xingneng New Materials Co., Ltd., Setsi sa Chengdu sa Organic Chemistry, Sekolo sa Sechaena sa Saense.

Lithium iron phosphate ha se taba e khethehileng

e senotse theknoloji e ncha ea BYD ea lithium iron manganese phosphate betri

Dr. Fan o itse ha se lithium iron phosphate le mefuta e meng ea li-ion tsa tšepe, phosphates ea motsoako, le menontsha, ammonium dihydrogen phosphate, ammonium phosphate, joalo-joalo) li tšoana, empa lipalo tse fapaneng tsa solubility, kahoo motho e mong Ho ka boleloa hore tšebeliso ea lithium iron phosphate le menontsha ea phosphorus, empa ha e le hantle, ho qhibiliha ha lithium iron phosphate ho fokola haholo ‘me ha ho khone ho lokolla likarolo tse sebetsang tsa phosphorus mobung.

Fan o lumela hore lihlopha tsa phosphate ke tsa mofuta o mong oa metsoako ea polyanionic (lisebelisoa tsa polyanionic anode), hobane lihlopha tsa phosphate li na le li-ion tse ngata tsa oksijene le libaka tsa ho hokahanya, ‘me hangata li ka etsa sebopeho sa steric polymer le li-ion tsa tšepe tsa phetoho.

Polyanion ke sebopuoa se seholo

e senotse theknoloji e ncha ea BYD ea lithium iron manganese phosphate betri

Mofani oa ngaka ha a na boleng ba tlhōrō, M e emela tšepe e ‘ngoe e fetileng, manganese, cobalt, nickel, koporo, chromium, joalo ka ntho leha e le efe ea tšepe, M ke tšepe ea motheo, sebopeho sa lik’hemik’hale, se bolokehileng ho sebelisoa March le lithium ion channel lithium betri Anode thepa, empa matla a fapaneng, voltage, le karo-karolelano ea ts’ebetso, bophelo bo fapaneng …

Phosphoric acid, lithium iron manganese kapa lithium iron manganese, ho joalo?

Dr. Weifeng Fan o lumela hore mofuta ofe kapa ofe oa sehlooho ha o bohlokoa. Ntho ea bohlokoa ke karo-karolelano ea tšepe ho manganese. Hona joale, ha ho na tumellano e hlakileng mabapi le lisebelisoa tse tharo tse tšoanang (532, 111, 811, joalo-joalo). Ke tlas’a maemo afe moo karo-karolelano ea tšepe le manganese e leng ea bohlokoa ka ho fetisisa. Ho lokile? Ka lebaka la botsitso le ts’ebetso ea eona e ntle, kopo ea sebele nakong e tlang e ka ‘na ea e-ba li-phosphates tse rarahaneng tsa tšepe.

e senotse theknoloji e ncha ea BYD ea lithium iron manganese phosphate betri

e senotse theknoloji e ncha ea BYD ea lithium iron manganese phosphate betri

Na bonnete ba tekheniki ke ‘nete?

Matla a theoretical a khethehileng a lithium iron phosphate ke 170mAh / g, tsela ea ho tsoa ke 3.4V, mme matla a matla a thepa ke 578Wh/kg. Matla a theoretical a lithium manganese phosphate ke 171mAh / g, tsela ea ho tsoa ke 4.1V, ‘me matla a matla a thepa ke 701Wh/kg, e leng 21% e phahameng ho feta ea pele.

Ho ea ka Dr. Fan Weifeng, marang-rang a betri ea Chaena, matla a matla a betri ea lithium iron phosphate e teng ke 90Wh/kg-130wh/kg. Ho ea ka ntlafatso ea 21% ea matla a matla a thepa, esita le phosphate ea lithium manganese e hloekileng, matla a matla a matla a ka fihla ho hoo e ka bang 150Wh/kg, matla a matla a ho sebelisa lithium manganese phosphate betri a ka fihla ka tlase ho 150Wh/kg. Ho nka mohlala oa betri ea lithium iron phosphate, haeba leano le molemo ka ho fetisisa la ho nahana (150Wh / kg) le bapisoa le leano le lebe ka ho fetisisa (90Wh / kg), ntlafatso e kholo e ka hakanyetsoa ho 67%, empa ho hlakile hore khopolo ena e ka ba feela. khopolo-taba .