Amabhethri esibili, njengamabhethri e-lithium ion, adinga ukushajwa uma amandla agciniwe esephelile.Emzamweni wokunciphisa ukuthembela kwethu emafutheni ezinto ezimbiwa phansi, ososayensi bebehlola izindlela ezisimeme zokushajwa kabusha amabhethri esibili.Muva nje, u-Amar Kumar (umfundi oneziqu elebhu ka-TN Narayanan e-TIFR Hyderabad) kanye nozakwabo bahlanganise ibhethri elihlangene le-lithium ion elinezinto ezithinta izithombe ezingashajwa kabusha ngamandla elanga.
Imizamo yokuqala yokuhambisa amandla elanga ukuze kushajwe kabusha amabhethri yasebenzisa ukusetshenziswa kwamaseli e-photovoltaic namabhethri njengamabhizinisi ahlukene.Amandla elanga aguqulwa amaseli e-photovoltaic abe amandla kagesi agcinwa njengamandla amakhemikhali kumabhethri.Amandla agcinwe kulawa mabhethri abe esesetshenziselwa ukunika amandla izinto zikagesi.Lokhu kudluliswa kwamandla kusuka engxenyeni eyodwa kuya kwenye, isibonelo, kusuka kuseli ye-photovoltaic kuya ebhethri, kuholela ekulahlekelweni okuthile kwamandla.Ukuze kuvinjwe ukulahleka kwamandla, kube khona ushintsho oluya ekuhloleni ukusetshenziswa kwezingxenye ze-photosensitive ngaphakathi kwebhethri ngokwalo.Kube nenqubekelaphambili enkulu ekuhlanganiseni izingxenye ze-photosensitive ngaphakathi kwebhethri okuholela ekwakhekeni kwamabhethri elanga ahlangene.
Nakuba ethuthukisiwe ekwakhiweni kwawo, amabhethri elanga akhona asenezinkinga ezithile.Okumbalwa kwalokhu kubi okuhlotshaniswa nezinhlobo ezahlukene zamabhethri elanga ahlanganisa: ukuncipha kwekhono lokusebenzisa amandla elanga anele, ukusetshenziswa kwe-organic electrolyte engase yonakalise ingxenye ye-photosensitive organic ngaphakathi kwebhethri, kanye nokwakheka kwemikhiqizo eseceleni evimbela ukusebenza okuqhubekayo kwebhethri isikhathi eside.
Kulolu cwaningo, u-Amar Kumar uthathe isinqumo sokuhlola izinto ezintsha ze-photosensitive ezingase futhi zihlanganise i-lithium futhi akhe ibhethri lelanga elingavuza futhi lisebenze kahle ezimeni ezizungezile.Amabhethri elanga anama-electrode amabili ngokuvamile ahlanganisa udayi we-photosensitive kwenye yama-electrode ngokomzimba ahlanganiswe nengxenye yokusimamisa esiza ukushayela ukugeleza kwama-electron ebhethri.I-electrode eyingxube ebonakalayo yezinto ezimbili inemikhawulo ekusetshenzisweni kahle kwendawo engaphezulu ye-electrode.Ukuze kugwenywe lokhu, abacwaningi abavela eqenjini lika-TN Narayanan badale i-heterostructure ye-photosensitive MoS2 (molybdenum disulphide) ne-MoOx (molybdenum oxide) ukuze isebenze njenge-electrode eyodwa.Njengoba i-heterostructure lapho i-MoS2 ne-MoOx zihlanganiswe ndawonye ngesu lokubeka umhwamuko wamakhemikhali, le electrode ivumela indawo engaphezulu ukuze imunce amandla elanga.Lapho imisebe yokukhanya ishaya i-electrode, i-photosensitive MoS2 ikhiqiza ama-electron futhi ngesikhathi esisodwa idala izikhala ezibizwa ngokuthi izimbobo.I-MoOx igcina ama-electron nezimbobo zihlukene, futhi idlulisela ama-electron kumjikelezo webhethri.
Leli bhethri lelanga, elahlanganiswa ngokuphelele kusukela ekuqaleni, latholwa lisebenza kahle lapho lichayeke ekukhanyeni okufanisiwe kwelanga.Ukwakheka kwe-electrode ye-heterostructure esetshenziswe kuleli bhethri kufundwe kabanzi nge-electronic microscope yokudlulisela.Ababhali bocwaningo njengamanje basebenzela ukuthola indlela i-MoS2 ne-MoOx esebenza ngayo ngokuhambisana ne-lithium anode okuholela ekukhiqizeni kwamanje.Nakuba leli bhethri lelanga lifinyelela ukusebenzisana okuphezulu kwezinto ezizwela ukukhanya nokukhanya, lisazofinyelela ukukhiqizwa kwamazinga alungile wamanje ukuze lishaje ngokugcwele ibhethri ye-lithium ion.Unale nhloso engqondweni, ilebhu ka-TN Narayanan ihlola ukuthi ama-electrode e-heterostructure angavula kanjani indlela yokubhekana nezinselele zamabhethri elanga lanamuhla.
Isikhathi sokuthumela: May-11-2022