Ubuchwepheshe bokugcina amandla obuhlanzekile nobusebenzayo bubalulekile ekusunguleni ingqalasizinda yamandla avuselelekayo.Amabhethri e-lithium-ion asevele evelele emishinini yomuntu siqu ka-elekthronikhi, futhi athembisa amakhandidethi okugcinwa okuthembekile kwezinga legridi kanye nezimoto zikagesi.Kodwa-ke, intuthuko eyengeziwe iyadingeka ukuze kuthuthukiswe amanani abo okushaja kanye nesikhathi sokuphila esisebenzisekayo.
Ukusiza ukuthuthukiswa kwamabhethri ashaja ngokushesha kanjalo nahlala isikhathi eside, ososayensi badinga ukwazi ukuqonda izinqubo ezenzeka ngaphakathi kwebhethri elisebenzayo, ukuze babone ukulinganiselwa ekusebenzeni kwebhethri.Okwamanje, ukubona ngeso lengqondo izinto zebhethri ezisebenzayo njengoba zisebenza kudinga amasu e-synchrotron X-ray noma amasu e-electron microscopy, angaba nzima futhi abize, futhi ngokuvamile awakwazi ukuthwebula izithombe ngokushesha ngokwanele ukuze athwebule izinguquko ezisheshayo ezenzeka ezintweni ezishajayo zama-electrode.Ngenxa yalokho, i-ion dynamics esikalini sobude sezinhlayiya ezingazodwana ezisebenzayo kanye namazinga okushaja okusheshayo ahlobene nezohwebo ahlala engakahlolisiswa.
Abacwaningi eNyuvesi yaseCambridge bayinqobile le nkinga ngokwakha indlela eshibhile esekwe elebhu yokubuka i-makroskopu yokufunda amabhethri e-lithium-ion.Bahlole izinhlayiya ngazinye ze-Nb14W3O44, ephakathi kwezinto ezishesha kakhulu ze-anode kuze kube manje.Ukukhanya okubonakalayo kuthunyelwa ebhethri ngefasitela elincane lengilazi, okuvumela abacwaningi ukuthi babuke inqubo eguquguqukayo ngaphakathi kwezinhlayiya ezisebenzayo, ngesikhathi sangempela, ngaphansi kwezimo ezingokoqobo ezingalingani.Lokhu kwembule ama-gradient e-lithium-concentration angaphambili ahamba ezinhlayiyeni ezisebenzayo, okuholela ekucindezelekeni kwangaphakathi okubangele ukuthi izinhlayiya ezithile ziphuke.Ukuphuka kwezinhlayiya kuyinkinga yamabhethri, ngoba kungaholela ekunqanyulweni kukagesi kwezingcezu, kunciphisa umthamo wokugcina ibhethri.“Lezi zenzakalo ezizenzekelayo zinemiphumela emibi kakhulu ebhethrini, kodwa bezingeke zibonwe ngesikhathi sangempela ngaphambi kwamanje,” kusho omunye umbhali uDkt Christoph Schnedermann, waseCambridge's Cavendish Laboratory.
Amakhono aphezulu okusebenza kwe-optical microscopy avumela abacwaningi ukuthi bahlaziye inani elikhulu lezinhlayiya, beveza ukuthi ukuqhekeka kwezinhlayiyana kuvame kakhulu ngamanani aphezulu wokubola kanye nezinhlayiya ezinde."Lokhu okutholakele kunikeza izimiso zokuklama ezisebenza ngokuqondile zokunciphisa ukuphuka kwezinhlayiyana kanye nokufiphala kwamandla kuleli klasi lezinto zokwakha" kusho umbhali wokuqala u-Alice Merryweather, ikhandidethi ye-PhD eMnyangweni Welabhorathri weCavendish kanye neKhemistry yaseCambridge.
Ukuqhubekela phambili, izinzuzo ezibalulekile zendlela yokusebenza - okuhlanganisa ukutholwa kwedatha okusheshayo, ukulungiswa kwezinhlayiyana eyodwa, namandla okukhipha okuphezulu - kuzonika amandla ukuhlola okuqhubekayo kokuthi kwenzekani lapho amabhethri ehluleka nokuthi angakuvimbela kanjani.Isu lingasetshenziswa ekufundeni cishe noma yiluphi uhlobo lwento yebhethri, ikwenze kube ucezu olubalulekile lwendida ekuthuthukisweni kwamabhethri esizukulwane esilandelayo.
Isikhathi sokuthumela: Sep-17-2022