Umnotho kanye nami nawe sidinga imithombo yamandla yesitoreji eseqophelweni eliphezulu. Lokhu kuqhutshwa yizindawo ezifana nezokuthutha ngogesi ngazinye, amandla aluhlaza, izinto zikagesi ezigqokekayo nokunye okuningi. Njengazo zonke izinto ezidingeka kakhulu, amabhethri athembisayo aba yindaba yokuqagela, okubangela izithembiso eziningi, phakathi kwazo okunzima ukuthola amaparele angempela. Ngakho amaFulentshi azidonsela phezulu. Bazokwazi yini?
Inkampani yaseFrance ekhiqiza ama-supercapacitor namabhethri i-Nawa Technologies amabhethri, i-carbon nanotube electrode entsha, evumela abakhiqizi ukuthi bakhe amabhethri okudonsa anezici ezingcono kakhulu. Inkampani ithembisa ukwandisa amandla ebhethri izikhathi eziyishumi, umthamo wamandla athile kuze kufike izikhathi ezintathu, umjikelezo wempilo kuze kufike izikhathi ezinhlanu futhi unciphise isikhathi sokushaja sibe imizuzu esikhundleni samahora.
Lezi zitatimende zikhomba uguquko ekukhiqizeni ibhethri. Futhi lokhu kuyathakazelisa kakhulu ngoba umthuthukisi uthembisa ukuhlinzeka ngobuchwepheshe esenziwe ngomumo bokukhiqiza amabhethri ngokusho kweresiphi yakhe cishe ezinyangeni eziyi-12.
Ngakho-ke amaFulentshi anikeza ini? Futhi bahlongoza ukushiya ubuchwepheshe bendabuko bokukhiqizwa kwama-electrode ebhethri (ama-anodes nama-cathodes). Namuhla, ama-electrode enziwa ngengxube yezimpushana ezincibilikisiwe emanzini noma kumakhemikhali akhethekile. Ingxube isetshenziswa ku-foil bese yomiswa. Lobu buchwepheshe bugcwele i-heterogeneity ebalulekile ekubunjweni kwezinto zokusebenza zama-electrode futhi ngokuhamba kwesikhathi kuholela ekulimazeni kwayo. Inkampani ye-Nawa ihlongoza ukulahla izimpushana nezisombululo futhi ikhulise ama-carbon nanotubes ku-foil njengesisekelo (isipontshi) sezinto ezisebenzayo (i-lithium).
Ubuchwepheshe obuhlongozwa yinkampani benza kube nokwenzeka ukukhula kuze kufike ku-2 billion carbon nanotubes ku-cm100 ngayinye ye-foil. Ngaphezu kwalokho, ubuchwepheshe be-Nawa benza kube nokwenzeka ukukhula ama-nanotubes aqondile aqondile (i-perpendicular to the base), efinyeza indlela ye-lithium ion isuka kwelinye i-electrode iye kwenye izikhathi ezingamashumi. Lokhu kusho ukuthi impahla ye-electrode iyakwazi ukupompa amandla kagesi amaningi ngawodwana, futhi ukwakheka oku-odwe kwama-nanotubes aqondiswe ngokulinganayo kuzosindisa isikhala ngaphakathi nesisindo sebhethri lonke, okuzophumela ekwandeni komthamo webhethri.
Futhi, njengoba ama-electrode efinyelela ku-25% wezindleko zamabhethri esimanje, ukukhiqizwa kwe-Nawa kuthembisa ukunciphisa izindleko zabo. Ubuchwepheshe bokukhiqiza esikhathini esizayo bufana nokuthi amashubhu azokhuliswa ku-foil imitha eyodwa ububanzi kusetshenziswa indlela yokugoqa (rolling). Kuyathakazelisa ukuthi lobu buchwepheshe bathuthukiswa yinkampani ukukhiqiza isizukulwane esisha sama-supercapacitor okuphathelene, kodwa ithembisa nokuthola isicelo ekukhiqizeni amabhethri e-lithium.
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Source: 3dnews.ru