Nzira yekugadzirira sei mabhatiri e-ultra-low tembiricha lithium ion anogona kushanda zvakajairika paminus 60°C?

Munguva pfupi yapfuura, Ding Jianning weJiangsu University nevamwe vakashandisa lithium iron phosphate yakavharwa mesoporous carbon seyakanaka electrode material uye hard carbon material yakapfuma mumesoporous structure yakagadzirwa neelectrospinning technology sechinhu chisina kunaka che electrode. Lithium bistrifluoromethanesulfonimide LiTFSi munyu uye electrolyte yeDIOX (1,3-dioxane) + EC (ethylene carbonate) + VC (vinylidene carbonate) zvinonyungudutsa zvinounganidzwa mubhatiri re lithium-ion. Iyo bhatiri midziyo yebhatiri yeyakagadzirwa ine yakanakisa ion kutapurirana maitiro uye nekukurumidza kuparara maitiro e lithium ion, pamwe neyakadzika-tembiricha electrolyte inochengetedza kuita kwakanaka pakudziya kwakadzika, kuve nechokwadi kuti bhatiri rinogona kushanda zvakajairika paminus 60 °. C.

Seye tekinoroji inokurumidza kusimukira muindasitiri yemabhatiri, veruzhinji vanogashira mabhatiri e-lithium-ion kune yavo yakakwira voltage yekushanda, yakakwira simba density, hupenyu hurefu hwekutenderera, kudzika-kuzviburitsa, kusarangarira mhedzisiro, uye "girinhi" kuchengetedza kwezvakatipoteredza. Iyo indasitiri yakaisawo mari yakawanda yekutsvaga. Kune kwakawanda uye kwakawanda kutsvagisa nezve lithium ion inogona kuchinjika kune yakanyanya-yakaderera tembiricha. Zvisinei, pasi pemamiriro ekunze ekupisa, viscosity ye electrolyte ichawedzera zvakanyanya, uye ichawedzera nguva yekufamba kwemabhatiri e-lithium-ion pakati pezvinhu zve electrode. Mukuwedzera, iyo electrolyte ichave yakanaka pane yakaderera tembiricha. Iyo SEI layer yakaumbwa mune yakashata electrode ichaita shanduko yechikamu uye inova isina kugadzikana. Nokudaro, zvinhu zvakanaka uye zvisina kunaka zve electrode mukugadzirwa kwemazuva ano zvinopa nzvimbo yakagadzikana yeSEI yekugadzira, kureba kwekufambisa kure, uye electrolyte ine viscosity yakaderera pakudziya kwakaderera, ichiziva lithiamu bhatiri rinogona kushanda pane yakanyanya-yakaderera tembiricha. kubva pa60°C. . Dambudziko rehunyanzvi rinogadziriswa nekugadzirwa nderekukunda kuganhurirwa kwekushandiswa kwe lithium bhatiri zvinhu munzvimbo dzakaderera-tembiricha uye dambudziko repamusoro viscosity yezvakajairwa maelectrolytes pakudziya kwakaderera uye yakaderera ion kufamba, uye kupa yakakwirira-chiyero kuchaja. uye kuburitsa kune yakanyanya-yakaderera tembiricha Iyo lithium-ion bhatiri uye nzira yekugadzirira iyo inoshandisa lithium-ion bhatiri kuwana yakanakisa kuchaji uye kuburitsa kuita pakudziya kwakaderera.

Mufananidzo 1 Kuenzanisa kwe electrochemical performance ye low-temperature lithium-ion mabhatiri pakupisa kwekamuri uye kupisa kwakadzika.

Kubatsira kunobatsira kwechigadzirwa ndechekuti kana iyo inokuvadza electrode zvinhu inoshandiswa seye electrode sheet, hapana binder inodiwa. Izvo hazvizodzikisi conductivity, uye inosimudzira mwero wekuita.

Kusungirirwa: ruzivo rwepa patent

Patent zita: Kugadzirira nzira yeultra-yakaderera tembiricha lithium-ion bhatiri inogona kushanda paminus 60°C.

Nhamba yekushambadzira yekunyorera CN 109980195 A

Chiziviso chekunyorera zuva 2019.07.05

Nhamba yekunyorera 201910179588 .4

Zuva rekushandisa 2019.03.11

Munyoreri Jiangsu University

Inventor Ding Jianning Xu Jiang Yuan Ningyi Cheng Guanggui