Stanford: Tachepetsa kulemera kwa osonkhanitsa amakono m'maselo a lithiamu-ion ndi 80 peresenti. Kuchuluka kwa mphamvu kumawonjezeka ndi 16-26 peresenti.

Asayansi ku yunivesite ya Stanford ndi Stanford Linear Accelerator Center (SLAC) adaganiza zochepetsera maselo a lithiamu-ion kuti achepetse kulemera kwawo ndikuwonjezera mphamvu yosungidwa. Kuti achite izi, adakonzanso zigawo zonyamula katundu kunja: m'malo mwa mapepala akuluakulu amkuwa kapena aluminiyamu, amagwiritsa ntchito zitsulo zopapatiza, zowonjezera ndi polima.

Kuchulukirachulukira kwamphamvu ku Li-ion popanda ndalama zambiri zogulira

Selo lililonse la Li-ion ndi mpukutu womwe umapangidwa ndi kutulutsa / kutulutsa wosanjikiza, electrode, electrolyte, electrode, ndi wokhometsa wapano mwadongosolo. Mbali zakunja ndi zojambula zachitsulo zopangidwa ndi mkuwa kapena aluminiyamu. Amalola ma elekitironi kuchoka mu selo ndi kubwerera mmenemo.

Asayansi ochokera ku Stanford ndi SLAC adaganiza zoyang'ana osonkhanitsa, chifukwa kulemera kwawo nthawi zambiri kumakhala makumi angapo peresenti ya kulemera kwa chiyanjano chonse. M'malo mwa mapepala amkuwa, adagwiritsa ntchito mafilimu a polima okhala ndi zingwe zopapatiza zamkuwa. Zinapezeka kuti zinali zotheka kuchepetsa kulemera kwa osonkhanitsa mpaka 80 peresenti:

The classic cylindrical lithiamu-ion cell ndi mpukutu wautali wokhala ndi zigawo zingapo. Asayansi ochokera ku Stanford ndi SLAC achepetsa magawo omwe amasonkhanitsa ndalama ndikuziyendetsa - otolera apano. M'malo mwa mapepala amkuwa, adagwiritsa ntchito mapepala a polima-mkuwa opangidwa ndi mankhwala osayaka (c) Yusheng Ye / Stanford University

Sizo zonse: mankhwala amatha kuwonjezeredwa ku polima omwe amalepheretsa kuyatsa, ndiyeno kutsika kwa zinthuzo kumayendera limodzi ndi kulemera kochepa:

Stanford: Tachepetsa kulemera kwa ma pantographs a lithiamu-ion ndi 80 peresenti. Kuchuluka kwa mphamvu kumawonjezeka ndi 16-26 peresenti.

Kutentha kwa zojambula zamkuwa zomwe zimagwiritsidwa ntchito mu selo la lithiamu-ion lachikale komanso chosonkhanitsa chopangidwa ndi ofufuza aku America (c) Yusheng E / Stanford University

Ofufuzawo akuti osonkhanitsa obwezerezedwanso amatha kuwonjezera mphamvu yokoka ya maselo ndi 16-26 peresenti (= 16-26 peresenti yowonjezera mphamvu pagawo lomwelo la misa). Izo zikutanthauza kuti batire ya kukula kofanana ndi kachulukidwe ka mphamvu katha kukhala 20 peresenti yopepuka kuposa yapano.

Kuyesera kunachitika m'mbuyomu kuti kukhathamiritse malo osungiramo madzi, koma kuwasintha kwadzetsa zotsatira zosayembekezereka. Maselo adakhala osakhazikika kapena ma electrolyte [okwera mtengo] amafunikira. Kusiyana kopangidwa ndi asayansi ku Stanford sikukuwoneka kuti kumabweretsa zovuta zotere.

Zosinthazi zili mu kafukufuku woyambirira, chifukwa chake musayembekezere kuti afika pamsika chaka cha 2023 chisanafike. Komabe, amawoneka odalirika.

Ziyenera kuwonjezeredwa kuti Tesla amakhalanso ndi lingaliro lokondweretsa kusonkhanitsa malipiro a zigawo zazitsulo. M'malo mogwiritsa ntchito zingwe zamkuwa zopyapyala kutalika konse kwa mpukutuwo ndikuzitulutsa pamalo amodzi okha (pakati), nthawi yomweyo zimawatulutsa pogwiritsa ntchito m'mphepete mwake. Izi zimapangitsa kuti zolipiritsa ziyende mtunda wocheperako (kukana!), Ndipo mkuwa umapereka kutentha kwina kwakunja:

Stanford: Tachepetsa kulemera kwa ma pantographs a lithiamu-ion ndi 80 peresenti. Kuchuluka kwa mphamvu kumawonjezeka ndi 16-26 peresenti.