Masana kimiyya sun ƙirƙiro ƙwayoyin sodium-ion (Na-ion) tare da ƙwararrun electrolyte • MOtocin Lantarki
Masana kimiyya daga Jami'ar Austin (Texas, Amurka) sun ƙirƙiri ƙwayoyin Na-ion tare da ingantaccen electrolyte. Har yanzu ba su kasance a shirye don samarwa ba, amma suna kallon alamar: suna kama da wasu nau'o'in kwayoyin lithium-ion, suna jure wa ɗaruruwan hawan hawan aiki kuma suna amfani da kashi mai arha da araha - sodium.
Kwalta, graphene, silicon, sulfur, sodium - waɗannan abubuwa da abubuwa zasu sa ya yiwu a inganta abubuwan lantarki a nan gaba. Suna da abu ɗaya gama gari: suna da ingantacciyar samuwa (ban da graphene) da kuma yin alkawarin yin kama da, kuma watakila ma mafi kyau a nan gaba, lithium.
Wani ra'ayi mai ban sha'awa shine maye gurbin lithium tare da sodium. Dukkan abubuwa biyun suna cikin rukuni guda na alkali karafa, duka biyun suna amsawa daidai gwargwado, amma sodium shine kashi na shida mafi yawa a cikin ɓawon ƙasa kuma muna iya samun shi cikin rahusa. A cikin ƙwayoyin Na-ion da aka haɓaka a Texas, ana maye gurbin lithium da ke cikin anode da sodium, kuma ana maye gurbin masu amfani da wutar lantarki da sulfur electrolytes. (madogara).
Da farko, an yi amfani da yumbu cathode, amma yayin aiki (cajin liyafar / canja wurin caji) ya canza girman kuma ya rushe. Sabili da haka, an maye gurbin shi tare da cathode mai sassauci wanda aka yi da kayan halitta. Tantanin halitta da aka tsara ta wannan hanya yayi aiki ba tare da gazawa ba fiye da 400 caji / fitarwa hawan keke, kuma cathode ya sami adadin kuzari na 0,495 kWh / kg (wannan ƙimar bai kamata a rikita shi da ƙarfin ƙarfin duka tantanin halitta ko baturi ba).
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Bayan ƙarin haɓakawa na cathode, yana yiwuwa a kai matakin 0,587 kWh / kg, wanda kusan yayi daidai da ƙimar da aka samu akan ƙwayoyin lithium-ion. Bayan zagayowar caji 500, baturin ya iya ɗaukar kashi 89 na ƙarfinsa.wanda kuma yayi daidai da ma'auni na ƙwayoyin Li-ion [mai rauni].
Kwayoyin Na-ion suna aiki a ƙananan ƙarfin lantarki fiye da ƙwayoyin lithium-ion, don haka ana iya amfani da su don kunna wutar lantarki mai ɗaukuwa. Koyaya, ƙungiyar Austin ta kuma yanke shawarar matsawa zuwa mafi girman ƙarfin lantarki don a iya amfani da ƙwayoyin a cikin motocin lantarki. Me yasa? Daya daga cikin manyan ma'auni na mota shine ƙarfinta, kuma kai tsaye ya dogara da ƙarfin halin yanzu da ƙarfin lantarki a cikin na'urorin lantarki.
Yana da kyau a kara da cewa John Goodenough, wanda ya kirkiro kwayoyin lithium-ion, ya fito ne daga Jami'ar Austin.
Buɗe Hoto: Halin ƙaramar dunƙule na sodium zuwa ruwa (c) Ron White Masanin ƙwaƙwalwar ajiya - Horon ƙwaƙwalwar ajiya da horar da kwakwalwa / YouTube. Ƙarin misalai:
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