Ayyukan Batir Lithium An Karye Sannu a hankali

Ayyukan Batir Lithium An Karye Sannu a hankali

Silicon anodes sun jawo hankali sosai a masana'antar baturi.Idan aka kwatanta dabaturi lithium-ionTa amfani da graphite anodes, za su iya samar da 3-5 sau girma iya aiki.Ƙarfin da ya fi girma yana nufin cewa baturin zai daɗe bayan kowace caji, wanda zai iya ƙara nisan tuki na motocin lantarki.Kodayake silicon yana da yawa kuma yana da arha, zagayowar cajin Si anodes yana da iyaka.A duk lokacin zagayowar caji, za a ƙara ƙara ƙararsu sosai, har ma ƙarfin ƙarfinsu zai ragu, wanda hakan zai haifar da karyewar ƙwayoyin lantarki ko kuma lalata fim ɗin lantarki.

Tawagar KAIST, karkashin jagorancin Farfesa Jang Wook Choi da Farfesa Ali Coskun, sun ba da rahoto a ranar 20 ga Yuli, wani abin da ake amfani da shi na kwayoyin halitta don manyan batura lithium ion mai ƙarfi tare da silicon anodes.

Ƙungiyar KAIST ta haɗa nau'ikan juzu'i na kwayoyin halitta (wanda ake kira polyrotaxanes) cikin masu ɗaure wutar lantarki na baturi, gami da ƙara polymers zuwa na'urorin baturi don haɗa na'urorin lantarki zuwa ƙananan ƙarfe.Zobba da ke cikin polyrotane ana murƙushe su cikin kwarangwal ɗin polymer kuma suna iya motsawa cikin yardar kaina tare da kwarangwal.

Zobba a cikin polyrotane na iya motsawa cikin yardar kaina tare da canjin ƙarar siliki.Zamewar zobba na iya yadda ya kamata kiyaye siffar siliki barbashi, don haka ba za su tarwatse a cikin ci gaba da girma canji tsari.Abin lura shi ne cewa ko da barbashi silicon da aka murƙushe na iya zama coalescent saboda babban elasticity na polyrotane adhesives.Ayyukan sabon adhesives ya bambanta sosai da na abubuwan da ake amfani da su (yawanci polymers masu sauƙi).Adhesives da ke akwai suna da iyakacin ƙarfi don haka ba za su iya tabbatar da sifar barbashi ba.Adhesives na baya suna iya tarwatsa ɓangarorin da aka murkushe su rage ko ma rasa ƙarfin lantarki na silicon.

Marubucin ya yi imanin cewa wannan kyakkyawan nuni ne na mahimmancin bincike na asali.Polyrotaxane ya lashe lambar yabo ta Nobel a bara don manufar "haɗin injiniyoyi".“Mechanical bonding” wata sabuwar ma’anar ra’ayi ce wadda za a iya ƙarawa zuwa ga haɗin gwiwar sinadarai na gargajiya, kamar haɗin gwiwar haɗin gwiwa, haɗin gwiwar ionic, haɗin kai da haɗin gwiwar ƙarfe.Binciken asali na dogon lokaci a hankali yana magance ƙalubalen da suka daɗe na fasahar batir a cikin wani adadin da ba zato ba tsammani.Marubutan sun kuma bayyana cewa a halin yanzu suna aiki tare da wani babban mai kera batir don haɗa ɗigon su na kwayoyin cikin ainihin samfuran batir.

Sir Fraser Stoddart, 2006 Noble Laureate Chemistry Award wanda ya lashe lambar yabo a Jami'ar Northwwest, ya kara da cewa: “Hanyoyin injina sun farfado a karon farko a cikin yanayin ajiyar makamashi.Ƙungiyar KAIST ta yi amfani da fasaha da fasaha na injina a cikin polyrotaxanes mai zamewa da aikin alpha-cyclodextrin karkace polyethylene glycol, wanda ke nuna ci gaba a cikin ayyukan batir lithium-ion akan kasuwa, lokacin da aka tara nau'ikan jan hankali tare da masu ɗaure na inji.Haɗaɗɗen suna maye gurbin kayan al'ada tare da haɗin sinadarai guda ɗaya kawai, wanda zai yi tasiri mai mahimmanci akan kaddarorin kayan da kayan aiki.


Lokacin aikawa: Maris-10-2023