Nws tau tshaj tawm tias thaum lub Yim Hli, lub zog tshiab kev lag luam tsheb tau xam phaj BYD Thawj Tswj Hwm Wang Chuanfu ntawm Hunan Shaoshan Sanji Engineering Work Conference, uas ua rau cov ntawv xov xwm tseem ceeb, cov vev xaib thiab cov neeg sawv cev, cov kws tshaj lij, thiab ntau tshaj li ib puas xov xwm hauv ib lub lis piam. Cov ntawv xov xwm hauv tsev thiab ntau pua ntawm cov kab lus kuj tau txais txiaj ntsig zoo los ntawm kev lag luam peev. Puas yog lub zog ceev tiag tiag nce? Puas yog lithium hlau phosphate lossis lithium hlau manganese phosphate? Cov khoom puas yuav hloov? Vim li no, cov xov xwm xam phaj Dr. Weifeng Fan, tus thawj coj ntawm Chengdu Xingneng New Materials Co., Ltd., Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences.

Lithium hlau phosphate tsis yog qhov tshwj xeeb

Tshaj tawm BYD cov thev naus laus zis tshiab lithium hlau manganese phosphate roj teeb

Dr. Ntxuam hais tias nws tsis yog lithium hlau phosphate thiab lwm yam hlau ions, compound phosphates, thiab chiv, ammonium dihydrogen phosphate, ammonium phosphate, thiab lwm yam) zoo sib xws, tab sis sib txawv solubility xam, yog li ib tug neeg yuav tau hais tias lub Kev siv cov lithium hlau phosphate thiab phosphorus chiv, tab sis qhov tseeb, solubility ntawm lithium hlau phosphate tsis zoo thiab tsis tuaj yeem tso cov phosphorus zoo hauv av.

Ntxuam ntseeg hais tias phosphate pawg koom nrog lwm hom polyanionic tebchaw (polyanionic anode cov ntaub ntawv), vim phosphate pawg muaj ntau cov pa oxygen ions thiab kev sib koom ua ke, thiab feem ntau tuaj yeem tsim cov qauv steric polymer nrog kev hloov hlau ions.

Polyanion yog ib qho loj spectrum

Tshaj tawm BYD cov thev naus laus zis tshiab lithium hlau manganese phosphate roj teeb

Tus kws kho mob kiv cua tsis muaj nqi siab, M sawv cev rau yav dhau los lwm yam hlau, manganese, cobalt, npib tsib xee, tooj liab, chromium, xws li cov khoom siv hlau, M yog lub hauv paus hlau, cov qauv tshuaj, muaj kev nyab xeeb siv lub Peb Hlis thiab lithium ion channel raws li ib tug lithium roj teeb Anode khoom, tab sis sib txawv muaj peev xwm, voltage, thiab piv ntawm kev ua tau zoo, txawv lub neej …

Phosphoric acid, lithium hlau manganese lossis lithium hlau manganese, txoj cai?

Dr. Weifeng Fan ntseeg tias txhua hom npe tsis tseem ceeb. Qhov tseem ceeb yog qhov piv ntawm hlau rau manganese. Tam sim no, tsis muaj kev pom zoo meej rau peb cov ntaub ntawv zoo sib xws (532, 111, 811, thiab lwm yam). Hauv qhov xwm txheej twg yog qhov piv ntawm cov hlau rau manganese qhov tseem ceeb tshaj plaws. Zoo? Vim nws txoj kev ruaj ntseg zoo thiab kev ua tau zoo, daim ntawv thov tiag tiag yav tom ntej yuav yog cov hlau ntau dua phosphates.

Tshaj tawm BYD cov thev naus laus zis tshiab lithium hlau manganese phosphate roj teeb

Tshaj tawm BYD cov thev naus laus zis tshiab lithium hlau manganese phosphate roj teeb

Puas yog technical authenticity yog qhov tseeb?

Lub peev xwm theoretical tshwj xeeb ntawm lithium hlau phosphate yog 170mAh / g, txoj kev tawm yog 3.4V, thiab lub zog ceev ntawm cov khoom yog 578Wh / kg. Lub peev xwm theoretical tshwj xeeb ntawm lithium manganese phosphate yog 171mAh / g, txoj kev tawm yog 4.1V, thiab cov khoom siv zog ceev yog 701Wh / kg, uas yog 21% siab dua li qub.

Raws li Dr. Fan Weifeng, nyob rau hauv Suav roj teeb network, lub zog ceev ntawm cov roj teeb lithium hlau phosphate uas twb muaj lawm yog 90Wh/kg-130wh/kg. Raws li 21% kev txhim kho nyob rau hauv cov khoom siv zog ceev, txawm tias ntshiab lithium manganese phosphate, lub zog ceev tuaj yeem ncav cuag li 150Wh / kg, lub zog ceev ntawm kev siv lithium manganese phosphate roj teeb tuaj yeem ncav cuag qis dua 150Wh / kg. Noj lithium hlau phosphate roj teeb ua piv txwv, yog tias lub tswv yim zoo tshaj plaws (150Wh / kg) piv nrog cov tswv yim phem tshaj tam sim no (90Wh / kg), qhov kev txhim kho siab tshaj plaws tuaj yeem kwv yees li 67%, tab sis pom tseeb qhov kev xav no tsuas yog tuaj yeem ua tau. ib hypothesis.