Ho na le tsoelo-pele ho theknoloji ea betri ea Li-S: ho feta 99%. matla ka mor'a lipotoloho tse 200

Bo-rasaense ba Univesithing ea Melbourne (Australia) ba phatlalalitse tsoelo-pele ea theknoloji ea lithium-sulfur (Li-S) ea ho tsitsisa betri. Ba khonne ho etsa lisele tse bolokang karolo ea 99 lekholong ea matla a bona ka mor'a lipotoloho tse 200 'me ba fana ka matla a mangata ho feta lisele tsa lithium-ion bakeng sa boima bo tšoanang.

Li-element tsa Li-S - ho na le mathata, ho na le tharollo

Khopolo ea ho sebelisa sebabole ka liseleng ha e ncha: Li-betri tsa Li-S li ne li se li sebelisitsoe ka 2008 ho Zephyr-6, e ileng ea roba tlaleho ea ho fofa ntle le ho lula. E ne e ka lula moeeng hoo e ka bang matsatsi a 3,5 ka lebaka la libeteri tsa lithium-sulphur tse bobebe tse neng li tsamaisa enjene 'me li ne li lefisoa ke lisele tsa photovoltaic (mohloli oa mohloli).

Leha ho le joalo, lisele tsa Li-S li na le tšitiso e le 'ngoe e tebileng: mamella ho fihlela ho mashome a 'maloa a lipotoloho tsa tshebetsoHobane ha e chesoa, cathode e entsoeng ka sebabole e atolosa molumo oa eona ka hoo e ka bang karolo ea 78 lekholong (!), e leng makhetlo a 8 ho feta graphite liseleng tsa lithium-ion. Ho ruruha ha cathode ho etsa hore e robehe le ho qhala sebabole ho electrolyte.

'Me boholo ba cathode e nyenyane, e nyenyane matla a sele eohle - ho senyeha ho etsahala hang-hang.

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Bo-rasaense ba Melbourne ba ile ba etsa qeto ea ho kopanya limolek'hule tsa sebabole hammoho le polymer, empa ba li fa sebaka se sengata ho feta pele. Karolo ea maqhama a thata e ile ea nkeloa sebaka ke marokho a polima a tenyetsehang, a entseng hore ho khonehe ho fihlela khanyetso e phahameng ea ho timetsoa ka phetoho ea molumo - marokho a khomaretsa likarolo tsa cathode joalo ka rabara:

Marokho a polymer a kopanyang meaho ea limolek'hule tsa sebabole (c) Univesithi ea Melbourne

Lisele tse nang le li-cathode tse ntlafetseng joalo li molemo ka ho fetisisa. ba ile ba khona ho boloka karolo ea 99 lekholong ea matla a bona a pele ka mor'a li-cycle tse fetang 200 tsa tefiso (mohloli). 'Me ba bolokile molemo o moholo oa sebabole: ba boloka matla a fetang makhetlo a 5 ho feta lisele tsa lithium-ion.

Metsotso? Ho tjhaja le ho tjhaja ho etsahetse ka matla a 0,1 C (0,1 x capacity), ka mor'a lipotoloho tse ling tse 200, esita le litharollo tse molemohali li theohile ho karolo ea 80 lekholong ea matla a tsona a pele. Hape, ka mejaro e phahameng (tefiso / ho tsoa ka matla a 0,5C), lisele li ile tsa lahleheloa ke karolo ea 20 lekholong ea matla a tsona ka mor'a makhetlo a 'maloa, ho feta 100 ho fetisisa.

Ho na le tsoelo-pele ho theknoloji ea betri ea Li-S: ho feta 99%. matla ka mor'a lipotoloho tse 200