Mokhoa oa ho lokisa libeteri tsa lithium ion tsa mocheso o tlase haholo tse ka sebetsang ka tloaelo ho minus 60°C?

Haufinyane tjena, Ding Jianning oa Univesithi ea Jiangsu le ba bang ba sebelisitse lithium iron phosphate coated mesoporous carbon e le thepa e ntle ea electrode le thepa e thata ea carbon e ruileng ka sebopeho sa mesoporous e lokiselitsoeng ke theknoloji ea electrospinning e le lisebelisoa tse mpe tsa electrode. Lithium bistrifluoromethanesulfonimide LiTFSi letsoai le electrolyte ea DIOX (1,3-dioxane) + EC (ethylene carbonate) + VC (vinylidene carbonate) li-solvents li kopantsoe ka har'a betri ea lithium-ion. Thepa ea betri ea betri ea tlhahiso-pele e na le litšobotsi tse ntle tsa phetisetso ea ion le litšobotsi tse potlakileng tsa ho senyeha ha lithium ion, hammoho le electrolyte ea mocheso o tlase o bolokang ts'ebetso e ntle ka mocheso o tlase, ho netefatsa hore betri e ntse e ka sebetsa ka tloaelo ho minus 60 °. C.

E le theknoloji e ntseng e tsoela pele ka potlako indastering ea betri, sechaba se amohela ka ho pharaletseng libeteri tsa lithium-ion bakeng sa motlakase oa tsona o phahameng oa ho sebetsa, matla a mangata a matla, bophelo ba nako e telele, ho itšehla thajana, ha ho na phello ea mohopolo, le "botala" ts'ireletso ea tikoloho. Indasteri le eona e tsetetse lipatlisiso tse ngata. Ho na le lipatlisiso tse ngata mabapi le li-ion tsa lithium tse ka ikamahanyang le mocheso o tlase haholo. Leha ho le joalo, tlas'a maemo a tlaase a mocheso, viscosity ea electrolyte e tla eketseha haholo, 'me e tla lelefatsa ho tsamaea ha libeteri tsa lithium-ion pakeng tsa lisebelisoa tsa electrode. Ho phaella moo, electrolyte e tla ba e ntle ka mocheso o tlaase. Sekhahla sa SEI se entsoeng ka electrode e mpe e tla fetoha phetoho ea mohato 'me e be e sa tsitsang haholoanyane. Ka hona, lisebelisoa tse ntle le tse mpe tsa li-electrode tse qapiloeng hona joale li fana ka tikoloho e tsitsitseng ea sebopeho sa SEI, sebaka se khuts'oane sa phetisetso, le electrolyte e nang le viscosity e tlase ka mocheso o tlase, ho hlokomela betri ea lithium e ntseng e ka sebetsa ka mocheso o tlase haholo. ka tlase ho 60°C. . Bothata ba botekgeniki bo lokelang ho rarolloa ke ho qaptjoa ke ho hlola moeli oa ts'ebeliso ea lisebelisoa tsa betri ea lithium maemong a mocheso o tlase le bothata ba viscosity e phahameng ea li-electrolyte tse tloaelehileng ka mocheso o tlase le motsamao o tlase oa ion, le ho fana ka tefiso e phahameng. le ho ntša mocheso o tlase haholo Betri ea lithium-ion le mokhoa oa ho e lokisa o sebelisa betri ea lithium-ion ho fihlela tefiso e ntle haholo le ts'ebetso ea ho lahla mocheso o tlase.

Setšoantšo sa 1 Papiso ea ts'ebetso ea electrochemical ea li-betri tsa lithium-ion tsa mocheso o tlase mocheso oa kamore le mocheso o tlase.

Phello e ntle ea ho qaptjoa ke hore ha thepa e kotsi ea electrode e sebelisoa e le letlapa la electrode, ha ho hlokahale hore ho be le binder. E ke ke ea fokotsa conductivity, 'me e tla ntlafatsa sekhahla sa tshebetso.

Sehlomathiso: litaba tsa patent

Lebitso la Patent: Mokhoa oa ho lokisa oa betri ea lithium-ion ea mocheso o tlase haholo e ka sebetsang ka tlase ho 60°C

Nomoro ea phatlalatso ea kopo CN 109980195 A

Letsatsi la tsebiso ea kopo 2019.07.05

Nomoro ea kopo 201910179588 .4

Letsatsi la kopo 2019.03.11

Mokopi Univesithing ea Jiangsu

Moqapi Ding Jianning Xu Jiang Yuan Ningyi Cheng Guanggui