Wata tawagar bincike karkashin jagorancin Farfesa CHEN Wei na jami'ar kimiyya da fasaha ta kasar Sin (USTC) ta bullo da wani sabon tsarin batir mai sinadari wanda ke amfani da iskar hydrogen gas a matsayin anode. An buga binciken a cikinAngewandte Chemie International Edition.
Hydrogen (H2) ya sami hankali a matsayin barga kuma mai tsada mai sauƙin sabunta makamashi mai ɗaukar nauyi saboda kyawawan kaddarorin electrochemical. Koyaya, batura masu tushen hydrogen da farko suna amfani da H2a matsayin cathode, wanda ke iyakance kewayon wutar lantarki zuwa 0.8-1.4 V kuma yana iyakance ƙarfin ajiyar makamashi gaba ɗaya. Don shawo kan ƙayyadaddun, ƙungiyar bincike ta ba da shawarar sabuwar hanya: amfani da H2a matsayin anode don inganta yawan ƙarfin makamashi da ƙarfin aiki. Lokacin da aka haɗa shi da ƙarfe na lithium azaman anode, baturin ya nuna aikin na musamman na lantarki.
Tsarin baturin Li-H. (Hoto daga USTC)
Masu binciken sun tsara tsarin batir Li-H samfurin samfuri, wanda ya haɗa da anode na ƙarfe na lithium, daɗaɗɗen iskar gas mai rufaffiyar platinum wanda ke aiki azaman hydrogen cathode, da ingantaccen electrolyte (Li).1.3Al0.3Ti1.7(PO4)3, ko LATP). Wannan saitin yana ba da damar ingantacciyar jigilar lithium ion yayin da yake rage mu'amalar sinadarai mara amfani. Ta hanyar gwaji, baturin Li-H ya nuna yawan kuzarin kuzari na 2825 Wh/kg, yana riƙe da tsayayyen ƙarfin lantarki na kusan 3V. Bugu da ƙari, ya sami ingantaccen ingantaccen tafiye-tafiye (RTE) na 99.7%, yana nuna ƙarancin ƙarancin kuzari yayin caji da hawan keke, yayin da yake kiyaye kwanciyar hankali na dogon lokaci.
Don ƙara haɓaka ingantaccen farashi, aminci da sauƙi na masana'anta, ƙungiyar ta haɓaka batir Li-H mara amfani wanda ke kawar da buƙatar ƙarfe na lithium da aka riga aka shigar. Madadin haka, baturin yana adana lithium daga gishirin lithium (LiH2PO4da LiOH) a cikin electrolyte yayin caji. Sigar tana riƙe fa'idodin daidaitaccen baturin Li-H yayin gabatar da ƙarin fa'idodi. Yana ba da damar ingantacciyar lithium plating da tsiri tare da ingancin Coulombic (CE) na 98.5%. Bugu da ƙari, yana aiki da ƙarfi ko da a ƙananan ƙwayoyin hydrogen, yana rage dogaro ga ma'aunin H₂ mai matsa lamba. Samfuran ƙididdiga, irin su simintin Maɗaukaki na Aiki (DFT), an yi su don fahimtar yadda lithium da ions hydrogen ke motsawa a cikin electrolyte na baturi.
Wannan ci gaba a fasahar baturi na Li-H yana ba da sabbin damammaki don ci-gaba da samar da hanyoyin ajiyar makamashi, tare da yuwuwar aikace-aikacen da ke tattare da sabbin makamashi, motocin lantarki, har ma da fasahar sararin samaniya. Idan aka kwatanta da batura na nickel-hydrogen na al'ada, tsarin Li-H yana ba da ingantaccen ƙarfin kuzari da inganci, yana mai da shi ɗan takara mai ƙarfi don ajiyar wutar lantarki na gaba. Sigar da ba ta da anode tana shimfiɗa ginshiƙi don ƙarin tsada-tasiri da batura na tushen hydrogen.
Haɗin Takarda:doi.org/10.1002/ange.202419663
(ZHENG Zihong ne ya rubuta, WU Yuyang ya gyara)
Lokacin aikawa: Maris 12-2025