Ku ya 21 Kanama, Prof. MA Cheng wo muri kaminuza y’ubumenyi n’ikoranabuhanga mu Bushinwa (USTC) na bagenzi be batanze ingamba zifatika zo gukemura ikibazo cy’itumanaho rya electrode-electrolyte kibuza iterambere ry’ibisekuruza bizaza bikomoka kuri Li. Ikomeye-ikomeye igizwe na electrode yaremye ubu buryo yerekanaga ubushobozi budasanzwe nigipimo cyibikorwa.
Gusimbuza amashanyarazi ya electrolyte muri bateri zisanzwe za Li-ion hamwe na electrolytite zikomeye birashobora kugabanya cyane ibibazo byumutekano, kandi birashobora kumena “ikirahuri cyikirahure” kugirango ingufu zongere ingufu. Nyamara, ibikoresho byingenzi bya electrode nabyo birakomeye. Kubera ko guhuza ibice bibiri bidashoboka nkaho bidashoboka kuba hafi nkuko biri hagati y’ibikomeye n’amazi, kuri ubu bateri zishingiye kuri electrolytite zikomeye ubusanzwe zigaragaza imikoreshereze mibi ya electrode-electrolyte hamwe n’imikorere yuzuye ya selile idashimishije.
Prof. MA Cheng wo muri USTC, umwanditsi mukuru w'ubwo bushakashatsi yagize ati: "Ikibazo cya electrode-electrolyte cyo guhura na bateri zikomeye zikomeye ni nkaho kimeze nk'igiti gito kigufi cy'igiti." Ati: "Mubyukuri, muri iyi myaka abashakashatsi bamaze gukora electrode nyinshi nziza na electrolytite zikomeye, ariko imikoranire mibi hagati yabo iracyagabanya imikorere yo gutwara Li-ion."
Kubwamahirwe, ingamba za MA zirashobora gutsinda iki kibazo gikomeye. Ubushakashatsi bwatangiriye kuri atom-by-atom isuzuma icyiciro cyanduye muri prototype, perovskite yubatswe na electrolyte ikomeye. Nubwo imiterere ya kristu yari itandukanye cyane hagati yumwanda na electrolyte ikomeye, byagaragaye ko bigize intera epitaxial. Nyuma yuruhererekane rwisesengura ryimiterere nuburyo bwa chimique, abashakashatsi bavumbuye ko icyiciro cyumwanda ari isostructural hamwe na Li-ikungahaye cyane kuri electrode. Nukuvuga ko prototype ikomeye ya electrolyte irashobora gutondekanya kuri "template" yashizweho na atomic framework ya electrode ikora cyane, bikavamo intera yimbere.
Umwanditsi wa mbere LI Fuzhen, usanzwe ari umunyeshuri urangije muri USTC yagize ati: "Mu byukuri biratunguranye." Ati: "Kuba hari umwanda uri mu bikoresho ni ibintu bisanzwe cyane, ku buryo akenshi bizirengagizwa. Icyakora, nyuma yo kubireba neza, twabonye iyi myitwarire idahwitse, kandi byaduteye inkunga mu buryo butaziguye kugira ngo tunoze umubano ukomeye."
Ugereranije nuburyo bukoreshwa muburyo bwo gukonjesha ubukonje, ingamba zashyizweho nabashakashatsi zirashobora gutahura neza, nta nkomyi hagati ya electrolytite ikomeye na electrode ku gipimo cya atome, nkuko bigaragara mumashusho ya microscopi ya electronique. （Yatanzwe nitsinda rya MA.）
Abashakashatsi bifashishije ibintu byagaragaye, bashakishije nkana ifu ya amorphous ifite ibice bimwe na electrolyte yubatswe na perovskite yubatswe hejuru y’uruganda rukungahaye kuri Li, kandi bashoboye kubona neza isano iri hagati y’ibikoresho byombi muri electrode ikomatanya. Hamwe na electrode-electrolyte ikibazo cyo guhura cyakemuwe, bene electrode ikomeye-ikomeye ikomeye itanga ubushobozi bwikigereranyo ndetse ugereranije nicyo kiva muri electrode ikomeye. Icy'ingenzi cyane, abashakashatsi basanze kandi ubu bwoko bwa epitaxial ikomeye-ikomeye ishobora kwihanganira ibintu byinshi bidahuye, bityo ingamba batanze zishobora no gukoreshwa mubindi byinshi bya perovskite ikomeye ya electrolytite na electrode.
MA yagize ati: "Aka kazi kerekanye icyerekezo gikwiye gukurikizwa." Ati: "Gushyira mu bikorwa ihame ryazamuwe hano ku bindi bikoresho by'ingenzi bishobora gutuma habaho imikorere myiza y'utugari ndetse na siyansi ishimishije. Turabitegereje."
Abashakashatsi bafite intego yo gukomeza ubushakashatsi bwabo muri iki cyerekezo, kandi bagashyira mu bikorwa ingamba ziteganijwe ku zindi cathodes zifite imbaraga nyinshi, zishobora kuba nyinshi.
Ubushakashatsi bwasohotse kuri Matter, ikinyamakuru cyamamaye mu Itangazamakuru ry'Akagari, cyiswe “Guhuza Atomike Imikoranire hagati ya Solid Electrolytes na Electrode ya Li Batteri”. Umwanditsi wa mbere ni LI Fuzhen, umunyeshuri urangije USTC. Abafatanyabikorwa ba Prof MA Cheng barimo Prof. NAN Ce-Wen wo muri kaminuza ya Tsinghua na Dr. ZHOU Lin wo muri Laboratwari ya Ames.
(Ishuri rya Chimie nubumenyi bwibikoresho)
Ihuza ry'impapuro: https://www.cell.com/ibintu/byuzuye/S2590-2385(19)30029-3
Igihe cyo kohereza: Jun-03-2019