Vatsvagiri kuDhipatimendi reUS reUS (Doe) Argonne National Laboratory vane nhoroondo refu yeyako yekupayona yakawanikwa mumunda weLithium-ion mabhatiri. Mazhinji emhedzisiro iyi ndezve bhatiri Cathode, inonzi NMC, Nickel Manganese uye Cobalt oxide. Bhatiri neiyi Cathode ikozvino inochengetedza chevrolet bolt.
Argonne vaongorori vakawana imwe breakthrough muNMC cathodes. Chikwata chitsva chechidiki cheti cathode chimiro chingaitwe kuti bhatiri raizokweretesa uye rakachengeteka, rinogona kushanda pamwe chete voltages uye kupa marefu emari.
"Iye zvino tine nhungamiro yekuti vagadziri vebhatiri vanogona kushandisa kumanikidza, zvishandiso zvepasina mhosva," Khahil Amin, Argonne shamwari.
"Iripo NMC Cathode inoisa dambudziko rakakura rebasa rakakura kwazvo," akadaro Mushandi weChemist Guemig Xu. Aine muridzi-discharge cycling, performance madonhwe nekukurumidza nekuda kwekuumbwa kwemazamu mune cathode svina. Kwemakumi emakore, vaongorori vebetsero vakatsvaga nzira dzekugadzirisa idzi marara.
Imwe nzira munguva yakapfuura yakashandisa zvidiki zvidiki zvemagetsi zvinoumbwa nezvakawanda zvidiki zvidiki zvidiki. Mahombekombe makuru enhetems ari polycrystalline, ine crystalline domains yezvikamu zvakasiyana. Nekuda kweizvozvo, ivo vane izvo masayendisiti aidaidza zviyo zvemiganhu pakati pezvidimbu, izvo zvinogona kukonzera bhatiri kupaza panguva yekutenderera. Kuti udzivise izvi, vatinoshanda navo uye vaArgonne vaimbove vakambogadzira polymer yekudzivirira kutenderedza chikamu chimwe nechimwe. Uku kuunganidza kwakakomberedza kwakakura kwechidimbu zvidimbu uye zvidiki zvidiki mukati mazvo.
Imwe nzira yekudzivirira rudzi urwu rwekupaza ndeye kushandisa imwe crystal cryles. Electron microscopy izvi zvimedu zvakaratidza kuti havana miganhu.
Dambudziko reboka racho raive rekuti Cathodes dzakagadzirwa kubva kuCoated PolycryStles uye imwechete makristasi ichiri kupaza panguva yekukwira. Naizvozvo, ivo vakaita kuongororwa kwakakura kwezvinhu izvi zvezvikwata zvekati
Various X-Ray Aryzes yakaitwa pane mashanu APS MaArms (11-BM, 20-BM, 2-ID-D, 11-ID-C uye 34-ID-E). Zvinoitika kuti izvo izvo masayendisiti aimbofunga kuti ndege imwechete, sezvakaratidzwa neyemagetsi uye X-ray microscopy, yaive nemiganhu mukati. Kuongorora uye kutapurirana Electron microscopy yeCnm yakasimbisa mhedzisiro iyi.
"Patakatarisa pamhepo morphology yezvidimbu izvi, vairatidzika semakristuru," akadaro Phikissicist wenjun Liu. "" <但是, 当我们在 APS 使用一种称为同步加速器 x, 我们发现边界隐藏在内部. " """Zvisinei, patakashandisa nzira inonzi synchrotron X-ray fifacction microscopy uye dzimwe nzira pana APS, takawana kuti miganhu yakavanzika mukati."
Zvakakosha, timu yakagadzira nzira yekuburitsa makristasi asina kuroora pasina miganhu. Kuedza masero madiki neiyi-crystal cathode kuwanda kwakakura kwakaratidza 25% kuwedzera kwesimba kuchengetedza chikamu cheyunemu pamwe nekurasikirwa mukuita pamusoro pebasa rinopfuura zana. Mukupesana, NMC Cathodes inoumbwa yehuwandu-interface imwechete makristasi kana akanyoreswa mapuranga airatidza kudonha kwe60% kusvika 88% pamusoro pehupenyu hwakaenzana.
Atomic chiyero kuverenga zvinoratidza maitiro eCathode Casacitance kuderedzwa. Sekureva kwa Maria Chang, Nanosciencienciencience paCnm, miganhu inokwanisika kurasikirwa nemaatomu okkoseni apo bhatiri racho rakapihwa mhosva kupfuura nzvimbo dziri kure navo. Uku kurasikirwa kweokisijeni kunotungamira mukusvibiswa kwekutenderera kwechitokisi.
"Kuverenga kwedu kunoratidza kuti muganhu ungatungamire sei kuokijasi racho kusunungurwa pakumanikidzwa kwakanyanya, izvo zvinogona kutungamira mukudzora kuita," Chan.
Kubvisa muganho kunodzivirira okisijeni shanduko, nokudaro ichivandudza kuchengetedzwa uye cyclic kugadzikana kweiyo cathode. Oxygen Evolution Evolution ine APS uye Yepamberi Chiedza Tsime kuUS Dhipatimendi reMeserce Lawrence Berkeley National Laboratory Laboratory Larussion.
"Iye zvino tine nhungamiro dzinogona kushandisa magadziri vebhatiri anogona kuita miganhu yezvishandiso uye mushandire kumanikidzwa," akadaro Khallil Amin, Argonne shamwari. "" <该指南应适用于 NMC 以外的其他正极材料. " "" <该指南应适用于 NMC 以外的其他正极材料. ""Nhungamiro dzinofanira kunyorera kune cathode zvinhu kunze kweNMC."
Chinyorwa nezvechidzidzo ichi chakaonekwa mune chinyorwa chemagazini. Pamusoro peXu, Amin, liu uye chang, iyo Argoniin Vanyori Liu, Yuzi Liu, Wenjing de, Inhui Hwang, Chengjun Sun, Tao Zhou, Ming du, Ming du, Zonghai chen. Masayendisiti kubva kuLawrenley Berkeley National Laboratori National Laboratory National Laboratori
About the Argonne Center yeNanomatsials iyo Center yeNanomatidziro yeNanomatidziro yeNogy Ongororo Nzvimbo dzeNyika, ndiyo yePremier Yenyika Instdisciplinary Nanoscale Tsaukutumidzwa neHofisi yeUS yeSimba reSimba reSimba reSainzi. Pamwe chete, NSRD inoumba suite yezvivakwa zvinowedzera zvinopa vaongorori vane mamiriro ehukama Iyo NSRC iri kuDhipatimendi reUS reUS Simba National Laboratories muArgonne, Brookaven, Lawrence Berkeley, Oak Ridge, Sandia, uye Los Alamos. Kuti uwane rumwe ruzivo nezve NSRC Doe, Shanyira HTTPS: // Science. Enosti. 9
Dhipatimendi reUS reUS Simba Rakafambira mberi Foton Shoice (APS) kuArgonne National Laborator ndiyo imwe yeakanyanya kugadzirwa X-ray zvinyorwa zvepasirese munyika. APS inopa yakakwira-yakawanda X-RAYS kune yakasarudzika nzvimbo yekutsvagisa muzvinyorwa zvesainzi, Chemistry, Crodensed nyaya fizikisi, hupenyu uye tsvarakaona nharaunda, uye nekutsvagisa. Aya ma-x-rays akakodzera kudzidza zvinhu uye zviumbwa zvezvivakwa, kugoverwa kwezvinhu zvemakemikisirwo emhando dzemhando dzose, kubva kumabhatiri kune majekisi emazwi, uye zvakakosha kune hupfumi hwenyika, tekinoroji. uye muviri hushe hwehutano. Gore rega rega, vanopfuura zviuru zvishanu vanotsvaga vanoshandisa APS yekuburitsa zvinyorwa zvinopfuura zviuru zviviri zvinotsanangudza zvinokosha uye kugadzirisa zvimwe zvakakosha zveBiology zvivakwa pane vashandisi veimwe x-ray yekutsvaga nzvimbo. APS masayendisiti uye mainjiniya ari kuita matekinoroji emhando itsvo iyo iri hwaro hwekuvandudza mashandiro evaakachera uye zvibodzwa zvemwenje. Izvi zvinosanganisira zvibodzwa zvekuisa zvinoburitsa zvakanyanyisa kupenya X-Rays zvinokonzeresa kuti vashoma veNanometes, uye kuunganidzwa uye manejimende
Chidzidzo ichi chakashandiswa zviwanikwa kubva kuThe Advanced Source, iyo Dhipatimendi reUS yeSainzi Mushandisi weSainzi Hofisi YemaSainzi Deatheni Dection de-ac02-06ch
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Hofisi yesainzi yeDhipatimendi reUS ndeyekuti chikamu chikuru cherudzi rukuru rwekutsvagisa musayenzi musainzi, vachishanda kugadzirisa dzimwe nyaya dzakawanda dzenguva yedu. Kuti uwane rumwe ruzivo, shanyira HTTPS: // simba .Gov / sainzi erence.