Ɗaya daga cikin matsalolin sake yin amfani da shi shine cewa farashin kayan da kansa ba su da yawa, kuma tsarin sake yin amfani da su ba shi da arha. Sabuwar fasaha tana fatan haɓaka sake yin amfani da batirin lithium ta hanyar ƙara rage farashi da amfani da abubuwan da suka dace da muhalli.

Sabuwar dabarar jiyya na iya mayar da kayan cathode da aka yi amfani da su zuwa matsayinsa na asali, yana ƙara rage farashin sake amfani da su. Nanoeengineers a Jami’ar California, San Diego ne suka haɓaka, fasahar ta fi dacewa da muhalli fiye da hanyoyin da ake amfani da su a halin yanzu. Tana amfani da albarkatun kore, tana rage yawan amfani da makamashi da kashi 80 zuwa 90 cikin 75, sannan tana rage fitar da hayaki mai gurbata muhalli da kashi XNUMX cikin dari.

Masu binciken sunyi cikakken bayanin aikin su a cikin wata takarda da aka buga a ranar 12 ga Nuwamba a Joule.

Wannan dabara ita ce manufa musamman ga cathodes da aka yi da lithium iron phosphate (LFP). Batirin cathode na LFP sun fi sauran batir lithium rahusa saboda basa amfani da karafa masu daraja kamar cobalt ko nickel. Hakanan baturan LFP sun fi ɗorewa kuma sun fi aminci. Ana amfani da su sosai a kayan aikin wuta, motocin bas ɗin lantarki da grid ɗin wuta. Model na Tesla 3 kuma yana amfani da batir LFP.

“La’akari da waɗannan fa’idodin, batir LFP za su sami fa’ida mai fa’ida akan sauran batir lithium a kasuwa,” in ji Zheng Chen, farfesa na injiniyoyin nanoengineering a Jami’ar California, San Diego.

Akwai wata matsala? “Ba shi da tsada don sake sarrafa waɗannan batura.” “Yana fuskantar matsala iri ɗaya da robobi – kayan da kansa ba shi da arha, amma hanyar sake sarrafa ta ba ta da arha,” in ji Chen.

Sabbin fasahohin sake amfani da su da Chen da tawagarsa suka kirkira na iya rage wadannan farashin. Fasahar tana aiki a ƙananan zafin jiki (digiri 60 zuwa 80 ma’aunin celcius) da matsi na yanayi, don haka tana amfani da ƙarancin wutar lantarki fiye da sauran hanyoyin. Bugu da ƙari, sinadarai da ake amfani da su, kamar lithium, nitrogen, ruwa, da citric acid, suna da arha kuma masu laushi.

“Dukkan tsarin sake yin amfani da su ana gudanar da shi ne a karkashin yanayi mai aminci, don haka ba ma bukatar wasu matakan tsaro na musamman ko kayan aiki na musamman,” in ji Pan Xu, babban marubucin binciken kuma mai bincike na gaba da digiri a dakin binciken Chen. Shi ya sa farashin sake yin amfani da batir ɗinmu yayi ƙasa. ”

Na farko, masu binciken sun sake yin amfani da batir LFP har sai sun rasa rabin ƙarfin ajiyar su. Daga nan sai suka wargaza batirin, suka tattara foda na cathode, suka jika shi a cikin ruwan gishirin lithium da citric acid. Bayan haka, sun wanke maganin da ruwa kuma su bar foda ya bushe kafin ya dumama shi.

Masu binciken sunyi amfani da foda don yin sabon cathodes, wanda aka gwada a cikin Button Kwayoyin da jakar jaka. Ayyukansa na lantarki, tsarin sinadarai da tsarinsa gaba ɗaya an dawo dasu zuwa asali.

Yayin da ake ci gaba da sake yin amfani da baturin, cathode yana fuskantar sauye-sauye masu mahimmanci guda biyu waɗanda ke rage aikinsa. Na farko shine asarar lithium ions, wanda ke haifar da ɓoyayyen a cikin tsarin cathode. Na biyu, wani canji na tsarin ya faru lokacin da baƙin ƙarfe da ions lithium a cikin tsarin crystal suka yi musayar wurare. Da zarar hakan ta faru, ion ɗin ba sa iya juyawa cikin sauƙi, don haka ion lithium ya makale kuma ba za su iya zagayawa ta cikin baturi ba.

Hanyar magani da aka gabatar a cikin wannan binciken da farko ta sake cika ion lithium, ta yadda ion baƙin ƙarfe da ion lithium za a iya sauƙin sauyawa zuwa matsayinsu na asali, ta yadda za a dawo da tsarin cathode. Mataki na biyu shine amfani da citric acid, wanda ke aiki a matsayin wakili mai ragewa don ba da gudummawar electrons zuwa wani abu. Yana canja wurin electrons zuwa ions baƙin ƙarfe, yana rage ingantaccen cajin su. Wannan yana rage ƙin electron kuma yana hana ions baƙin ƙarfe komawa zuwa matsayinsu na asali a cikin tsarin crystal, yayin da yake sake sakin ions na lithium a cikin sake zagayowar.

Yayin da yawan makamashin da ake amfani da shi na tsarin sake yin amfani da shi ya yi kadan, masu binciken sun ce ana bukatar ci gaba da bincike kan dabarun tattarawa, jigilar kayayyaki da zubar da dimbin batura.

” Kalubale na gaba shine gano yadda za a inganta waɗannan hanyoyin dabaru.” “Wannan zai kawo fasahar sake amfani da mu mataki daya kusa da aikace-aikacen masana’antu,” in ji Chen.