Ukutshaja i-lithium ibhetri ye-anode yokwandiswa kwezinto kunzima ukoyisa indlela entsha ye-United States kunye ne-China R <000000> Iqela le-D

Mwandishi:Iflowpower- Leverandør av bærbar kraftstasjon

Ngokweengxelo zeendaba zangaphandle, ekubeni i-silicon inobuninzi bamandla aphezulu, iye yaba yinto ekhangayo kakhulu ye-lithium-ion yebhetri ye-anode. Nangona kunjalo, ngexesha lokutshaja, i-shrinkage yokwandisa inokufikelela kwi-300% xa i-silicon kwiseli isebenzisana ne-lithium. Kwaye ekuhambeni kwexesha, kuya kunciphisa kakhulu ukusebenza, isiphaluka esifutshane sebhetri, kwaye ekugqibeleni sikhokelela kwi-battery scrap.

Ukuze kuphuculwe okungalunganga okungentla kwaye ngokuqhelekileyo kugcinwe ubuninzi bamandla ebhetri, i-anode yebhetri ye-lithium-ion isetyenziswa ngoku kusetyenziswa i-silicon monoxide (SiOx, X≈1). Ukusetyenziswa kwe-silicon-based oxide anode kuphezulu kakhulu, kwaye ukusebenza komjikelo kuphuculwe. Nangona kunjalo, izinto eziphathekayo azikwazi ukuthintela utshintsho lwevolumu, kwaye i-conductivity ebuthathaka ibuthathaka.

Inani elikhulu lomsebenzi wophando lwenziwe ukujongana nezi ngxaki zobugcisa zingentla. Namhlanje, iqela lophando kwilizwe lam kunye ne-United States lipapashe iziphumo zophando kwaye lifumene iindlela ezimbini ezintsha zokuphucula. Iziphumo zophando zeqela lase-US: I-silica oxide engekho-adhesive / carbon complex IYunivesithi yaseKentucky (UNIVERSITYE) iqela lophando Emva kokuxuba i-silicon-based oxide particles kunye ne-kraftlignin, ukudibanisa ukusebenza okuphezulu okungahambiyo kwe-Silicon-based oxide / carbon complex (Binder-freesiox / c) yokwenza i-electrodes yeebhetri ze-lithium ion.

Emva kokunyangwa kobushushu, i-lignin yenza umzimba oqhubayo (i-ConductiveMatrix), onokubamba inani elikhulu lee-silicon-based oxide particles ukuqinisekisa ukuhanjiswa kwe-elektroniki, ukudibanisa, kunye nokulungelelanisa kwi-lithiation / deodentation reaction ngexesha le-lithiation / Delithiation. Ukutshintsha umthamo. Lo mbandela awudingi ukusebenzisa izibophelelo eziqhelekileyo okanye ii-conductor.

Ukusebenza kwe-electrode eyenziwe ngezinto ezidibeneyo zigqwesileyo ngokugqithisileyo. Xa kuthelekiswa ne-silicon-based oxide electrode encinci (160%) yereyithi yokutshintsha umthamo, iipropathi zomatshini we-electrochemical zigqwesile, i-ferbonmatrix inkulu, kwaye inokuhlengahlengiswa kutshintsho lwevolumu. Iziphumo zophando lweqela lethu: I-Micro SiOx / C Cabens (i-Core-Shell) Umdibaniso weqela lophando lwelizwe lam liphuhlise isisombululo esisebenzayo ukulungiselela i-micro SiOx / C core shell complex.

Iqela lophononongo elixubene ne-citricacid kunye nebhola yokugaya i-silicon-based oxide yenza ukuba ibe yikhabhoni, ilandelwa yi-textured SiOx / C-core shell shell complex - i-SiOx micro core kunye ne-citrate carbon CONFORMALCARBONSHELL. Iqokobhe lekhabhoni linyuse kakhulu ukuhanjiswa kombane kwe-silicon-based oxides, kunye notshintsho lwevolumu ekuziqhelaniseni ne-lithiuming / deod lithium reaction. Ii-electrode ezenziwe yi-SiOx / C complex ziyi-1296.

I-3mAh / g, kunye ne-COMBICEFFICIENCY iphezulu njenge-99.8%, kwaye izinga lokugcinwa kwamandla yi-65.1% (843.

5mAh / g) emva kokuhlawula kunye nokukhutshwa ngamaxesha angama-200. Ngokutsho kweqela lophando, ukukhutshwa kokusebenza kwe-complex kuhle kakhulu. Indlela inokufikelela kwimveliso yobuninzi, indleko-esebenzayo, inokuvelisa izinto eziphezulu ze-anode ezenziwe kwii-composites ze-SiOx / C eziyinkimbinkimbi.