Daraasadu waxay helaysaa furaha hagaajinta nolosha batteriga: isdhexgalka qaybaha

Sida laga soo xigtay warbixinnada warbaahinta ajnabiga ah, Feng Lin, oo ah borofisar ku-xigeenka qaybta Chemistry-ga ee Virginia Tech College of Science, iyo kooxdiisii ​​cilmi-baarista waxay ogaadeen in burburka baytarigu u muuqdaa in ay wadaan sifooyinka walxaha elektiroonigga ah, laakiin ka dib daraasiin eedeymo ah. Ka dib duubista, sida ay qaybahaas isu waafajiyaan ayaa aad muhiim u ah.

"Daraasaddani waxay daaha ka qaadaysaa sirta ah sida loo naqshadeeyo loona farsameeyo electrodes-ka baytariga muddada dheer ee nolosha wareegga batteriga," ayuu yiri Lin.Hadda, shaybaadhka Lin waxa uu ka shaqaynayaa dib-u-habaynta elektiroonigga baytariga si uu u abuuro ku-dallacsi degdeg ah, qiime jaban, nolol dheer iyo qaab-dhismeedka elektrode-ka deegaanka u saaxiib ah.

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Daraasadu waxay helaysaa furaha hagaajinta nolosha batteriga: isdhexgalka qaybaha
GasgooLiu Liting5小时前
Sida laga soo xigtay warbixinnada warbaahinta ajnabiga ah, Feng Lin, oo ah borofisar ku-xigeenka qaybta Chemistry-ga ee Virginia Tech College of Science, iyo kooxdiisii ​​cilmi-baarista waxay ogaadeen in burburka baytarigu u muuqdaa in ay wadaan sifooyinka walxaha elektiroonigga ah, laakiin ka dib daraasiin eedeymo ah. Ka dib duubista, sida ay qaybahaas isu waafajiyaan ayaa aad muhiim u ah.

"Daraasaddani waxay daaha ka qaadaysaa sirta ah sida loo naqshadeeyo loona farsameeyo electrodes-ka baytariga muddada dheer ee nolosha wareegga batteriga," ayuu yiri Lin.Hadda, shaybaadhka Lin waxa uu ka shaqaynayaa dib-u-habaynta elektiroonigga baytariga si uu u abuuro ku-dallacsi degdeg ah, qiime jaban, nolol dheer iyo qaab-dhismeedka elektrode-ka deegaanka u saaxiib ah.

Isha sawirka: Feng Lin

"Marka qaab dhismeedka korantada uu u ogolaado qayb kasta oo shakhsi ah in ay si dhakhso ah uga jawaabto calaamadaha korantada, waxaan haysan doonaa qalab aad u fiican oo si degdeg ah u dallaca baytariyada," ayuu yiri Lin."Waan ku faraxsanahay inaan awoodno fahamkeena jiilka soo socda ee baytariyada degdega ah ee jaban.”

Cilmi-baarista waxaa la sameeyay iyadoo lala kaashanayo Waaxda Tamarta Mareykanka ee SLAC National Accelerator Laboratory, Jaamacadda Purdue iyo Xarunta Shucaaca Synchrotron ee Yurub.Zhengrui Xu iyo Dong Ho, saaxiibada postdoctoral ee shaybaarka Lin, sidoo kale waa wada-qoraalayaal ku qoran warqadda, hogaaminaya samaynta korantada, samaynta batteriga, iyo cabbirada waxqabadka batteriga, iyo caawinta tijaabooyinka raajada iyo falanqaynta xogta.

"Dhismaha aasaasiga ah waa qaybahan ka kooban electrodes batteriga, laakiin marka kor loo qaado, qaybahaani waxay la falgalaan midba midka kale," ayuu yiri saynisyahan SLAC Yijin Liu, oo ka tirsan Stanford Synchrotron Radiation Light Source (SSRL)."Haddii aad rabto inaad samayso baytari wanaagsan, waxaad u baahan tahay inaad ogaato sida la isugu keeno qaybaha."

Iyada oo qayb ka ah daraasadda, Lin, Liu iyo asxaabtooda kale waxay isticmaaleen farsamooyinka aragga kombuyuutarka si ay u daraaseeyaan sida qaybaha gaarka ah ee ka kooban elektirooniyada baytariyada dib loo dallaci karo ay u burburaan muddo ka dib.Hadafka wakhtigan waa in aan daraasad ku samayn oo keliya qaybo gaar ah, laakiin sidoo kale siyaabaha ay u wada shaqeeyaan si loo kordhiyo ama loo yareeyo nolosha batteriga.Hadafka ugu dambeeya waa in la barto habab cusub oo lagu kordhiyo nolosha naqshadaha batteriga.

Iyada oo qayb ka ah daraasadda, kooxdu waxay ku barteen cathode-ka baytariga raajada.Waxay isticmaaleen sawir qaade X-ray si ay dib ugu dhisaan sawirka 3D ee cathode batteriga kadib wareegyo dallacasho oo kala duwan.Kadibna waxay u gooyeen sawiradan 3D ee taxane ah oo 2D ah waxayna isticmaaleen habab aragga kumbuyuutarka si ay u aqoonsadaan qaybaha.Marka laga soo tago Lin iyo Liu, daraasadda waxaa ka mid ahaa cilmi-baaraha SSRL postdoctoral Jizhou Li, borofisar injineerinka farsamada ee Jaamacadda Purdue Keije Zhao, iyo arday ka qalin jabiyay Jaamacadda Purdue Nikhil Sharma.

Cilmi-baadhayaashu waxay ugu dambeyntii ogaadeen in ka badan 2,000 oo qaybood oo gaar ah, iyaga oo xisaabinaya ma aha oo kaliya sifooyinka walxaha shakhsi ahaaneed sida cabbirka, qaabka, iyo qallafsanaanta dusha sare, laakiin sidoo kale sifooyinka sida inta jeer ee qaybaha ay si toos ah isula xiriiraan midba midka kale iyo inta ay qaybuhu isbeddeleen qaabka.

Marka xigta, waxay eegeen sida hanti kastaa ay u keentay inay jajabaan qaybaha, waxayna ogaadeen in ka dib 10 wareegyo xajmi ah, arrimaha ugu waaweyni waxay ahaayeen sifooyinka walxaha shakhsi ahaaneed, oo ay ku jiraan sida ay u siman yihiin qaybaha qaybaha iyo saamiga qayb ka mid ah mugga qaybta dusha sare.Si kastaba ha ahaatee, 50 wareegyo ka dib, si kastaba ha ahaatee, lamaanaynta iyo guryaha kooxdu waxay kaxeeyeen burburka walxaha - sida inta ay u kala fog yihiin labada qaybood, intee in le'eg ayaa qaabka isbeddelay, iyo haddii qaybaha kubbadda kubbadda cagta ee dheeraadka ah ee qaabka kubbadda cagta ay lahaayeen hanuunin isku mid ah.

"Sababtu hadda ma aha oo kaliya qaybta lafteeda, laakiin isdhexgalka qayb-qayb," Liu ayaa yidhi.Helitaankani waa muhiim sababtoo ah waxay la macno tahay in soosaarayaashu ay horumarin karaan farsamooyin lagu xakameynayo guryahan.Tusaale ahaan, waxaa laga yaabaa inay awoodaan inay adeegsadaan magnetic ama meelaha korantada Is waafajinta walxaha dhaadheer ee midba midka kale, natiijooyinkii ugu dambeeyay waxay soo jeedinayaan in tani ay kordhin doonto nolosha batteriga.

Lin wuxuu raaciyay: "Waxaan si xooggan u baarnay sida loo sameeyo baytariyada EV si hufan ugu shaqeeyaan si degdeg ah iyo xaaladaha heerkulka hooseeya.Marka lagu daro naqshadaynta walxo cusub oo hoos u dhigi kara kharashka batteriga iyadoo la isticmaalayo alaab cayriin oo ka jaban oo aad u badan, shaybaadhkayaga Waxa kale oo jiray dadaal joogto ah oo lagu fahamayo habdhaqanka batteriga oo ka fog sinnaanta.Waxaan bilownay inaan barano agabka baytariga iyo sida ay uga jawaabaan bay'ada adag."