Kune kufambira mberi muLi-S bhatiri tekinoroji: kupfuura 99%. simba pashure 200 kutenderera

Masayendisiti kubva kuYunivhesiti yeMelbourne (Australia) akazivisa kufambira mberi mu lithium-sarufa (Li-S) bhatiri kudzikamisa tekinoroji. Vakakwanisa kugadzira masero akachengetedza zvinopfuura makumi mapfumbamwe nepfumbamwe muzana ehuremu hwavo mushure memazana maviri uye akapa huwandu hwakapetwa huwandu hwemasero e-lithium-ion ehuremu hwakafanana.

Li-S zvinhu - kune matambudziko, kune mhinduro

Pfungwa yekushandisa sarufa mumasero haisi itsva: Li-S mabhatiri akange atoshandiswa muna 2008 paZephyr-6, iyo yakatyora rekodhi yekubhururuka isina kumhara. Yaigona kugara mumhepo kweanenge mazuva 3,5 nekuda kweakareruka mabhatiri e-lithium-sarufa ayo aifambisa injini uye ivo pachavo vaichajwa nemasero ephotovoltaic (mabviro).

Nekudaro, masero eLi-S ane chimwe chakakomba chinokanganisa: kutsungirira kusvika kumakumi akati wandei ekushanda kutendereraNokuti kana yachajiswa, kathodhi yakagadzirwa nesarufa inowedzera huwandu hwayo ne78 muzana (!), iyo inopeta ka8 kupfuura graphite mumasero elithium-ion. Kuzvimba kwecathode kunoita kuti iputse uye inyungudise sarufa iri mu electrolyte.

Uye iyo diki saizi ye cathode, iyo diki yekukwanisa yesero yese - kushatisa kunoitika pakarepo.

> Motokari yemagetsi inofanira kugara kwenguva yakareba sei? Bhatiri remugadziri wemagetsi rinotsiva makore mangani? [TICHAPINDURA]

Masayendisiti eMelbourne akafunga kunama mamorekuru esarufa pamwe chete nepolymer, asi akavapa nzvimbo yakati wandei kupfuura kare. Chikamu chezvisungo zvakasimba zvakatsiviwa nemabhiriji anochinjika epolymer, izvo zvakaita kuti zvikwanise kuwana kupikisa kwepamusoro kuparadzwa nekuchinja kwevhoriyamu - mabhiriji anonamira zvinhu zvecathode senge rabha:

Polymer mabhiriji anobatanidza zvimiro zvesarufa mamorekuru (c) Yunivhesiti yeMelbourne

Masero ane macathodes akavandudzwa akadaro ari paanogona napo. vakakwanisa kuchengetedza 99 muzana yehukwanisi hwavo hwepakutanga mushure memazana maviri ekuchaji kutenderera (kunobva). Uye vakachengeta mukana mukuru wesarufa: vanochengeta simba rakapetwa kashanu pavhoriyamu yevhoriyamu kupfuura lithium-ion masero.

Minuses? Kuchaja nekuburitsa kwakaitika pasimba re0,1 C (0,1 x capacity), pashure pemamwe mativi mazana maviri, kunyange mhinduro dzakanakisisa dzakadzika kusvika ku200 muzana yokukwanisa kwadzo kwepakutanga. Zvakare, pamitoro yepamusoro (kuchaja/kuburitsa pa 0,5C simba), maseru akarasikirwa ne20 muzana yesimba rawo mushure megumi nembiri, achangopfuura zana ekuchajisa kutenderera zvakanyanya.

Kune kufambira mberi muLi-S bhatiri tekinoroji: kupfuura 99%. simba mushure me200 cycles