Masu bincike daga Cibiyar Fasaha ta Jamus Karlsruhe (KIT) ya buga labarin a cikin Nature Communications wanda ya bayyana tsarin lalata cathode a cikin batura masu ƙarfi na lithium-ion. An gudanar da binciken a matsayin wani ɓangare na haɓaka batura tare da ƙara ƙarfin aiki da inganci. Ba tare da cikakkiyar fahimtar hanyoyin lalata cathode ba, ba shi yiwuwa a sami nasarar haɓaka ƙarfin batura tare da mafi girman inganci, wanda ya zama dole don haɓaka motocin lantarki. Masana kimiyya suna da yakinin cewa ilimin da aka samu zai ba da damar ƙara ƙarfin baturan lithium-ion da kashi 30%.
Babban aiki baturi don mota da sauran aikace-aikace na bukatar daban-daban tsarin cathode. A cikin batirin lithium-ion na zamani, cathode tsari ne na oxides da yawa tare da bambancin nickel, manganese da cobalt. Batura masu ƙarfi suna buƙatar cathodes masu wadatar manganese tare da wuce haddi na lithium, wanda ke haɓaka ikon adana makamashi a kowace juzu'in juzu'i / yawan kayan cathode. Amma irin waɗannan kayan sun kasance ƙarƙashin raguwa cikin sauri.
A lokacin aiki na yau da kullun, lokacin da cathode ya haɓaka ko ya rasa ions lithium, kayan cathode mai ƙarfi ya lalace. Bayan wani ɗan lokaci, oxide ɗin da aka yi da shi ya juya ya zama tsarin crystalline tare da kaddarorin electrochemical mara kyau. Wannan yana faruwa a farkon matakan aikin baturi, wanda ke haifar da raguwa cikin sauri a matsakaicin caji da ƙimar fitarwa.
A cikin jerin gwaje-gwajen da masana kimiyyar Jamus suka gudanar sun gano cewa lalacewa ba ta faruwa kai tsaye, sai dai a kaikaice ta hanyar samuwar halayen da ke da wuyar tantancewa tare da samuwar tsayayyen gishiri mai dauke da lithium. Bugu da ƙari, oxygen ya bayyana yana taka muhimmiyar rawa a cikin halayen. Masu binciken sun kuma sami damar zana sabbin abubuwa game da tsarin sinadarai a cikin batir lithium-ion wanda bazai haifar da lalatawar cathode ba. Yin amfani da sakamakon da aka samu, masana kimiyya suna fatan rage lalata cathode kuma a ƙarshe su haɓaka sabon nau'in baturi tare da ƙarin ƙarfi.
source: 3dnews.ru