Ofufuza ochokera ku Germany Institute of Technology Karlsruhe (KIT) inasindikiza nkhani Nature Communications kuti anafotokoza limagwirira cathode kuwonongeka mu mkulu-mphamvu mabatire lithiamu-ion. Kafukufukuyu adachitika ngati gawo la chitukuko cha mabatire omwe ali ndi mphamvu zowonjezera komanso zogwira mtima. Popanda kumvetsetsa kolondola kwa njira zowonongeka kwa cathode, sikutheka kuonjezera bwino mphamvu ya mabatire ndipamwamba kwambiri, zomwe ndizofunikira pa chitukuko cha magalimoto amagetsi. Asayansi ali ndi chidaliro kuti chidziwitso chomwe apeza chidzalola kuti mabatire a lithiamu-ion achuluke ndi 30%.
Mabatire ochita bwino kwambiri pamagalimoto ndi mapulogalamu ena amafunikira mawonekedwe osiyanasiyana a cathode. M'mabatire amakono a lithiamu-ion, cathode ndi multilayer kapangidwe ka oxides ndi ma ratios osiyanasiyana a faifi tambala, manganese ndi cobalt. Mabatire amphamvu kwambiri amafunikira ma cathode opangidwa ndi manganese okhala ndi lithiamu wowonjezera, zomwe zimawonjezera kuthekera kosunga mphamvu pa unit voliyumu / unyinji wa zinthu za cathode. Koma zinthu zoterezi zinkawonongeka kwambiri.
Pa ntchito yachibadwa, pamene cathode imalemeretsedwa kapena kutaya ma ion a lithiamu, zinthu zamphamvu za cathode zimawonongedwa. Patapita nthawi, okusayidi wosanjikiza amasanduka crystalline dongosolo ndi zoipa kwambiri electrochemical katundu. Izi zimachitika kale kumayambiriro kwa ntchito ya batri, zomwe zimabweretsa kuchepa kwachangu mulingo wapakati komanso kutulutsa.
Pazoyeserera zingapo, asayansi aku Germany adapeza kuti kuwonongeka sikuchitika mwachindunji, koma mosadukiza kudzera mukupanga zovuta kudziwa zomwe zimachitika ndi mapangidwe a mchere wolimba wokhala ndi lifiyamu. Komanso, mpweya ukuwoneka kuti umagwira ntchito yofunika kwambiri pazochitikazo. Ofufuzawo adathanso kupeza malingaliro atsopano okhudza njira zamakina m'mabatire a lithiamu-ion omwe sangabweretse kuwonongeka kwa cathode. Pogwiritsa ntchito zotsatira zomwe apeza, asayansi akuyembekeza kuchepetsa kuwonongeka kwa cathode ndipo potsirizira pake apanga mtundu watsopano wa batri ndi mphamvu yowonjezera.
Source: 3dnews.ru