Abaphenyi abavela kuUbuchwepheshe University of Munich(Tum) futhiRwth aachen UniversityEJalimane kuqhathaniswe nokusebenza kukagesi kwamabhethri aphezulu we-sodium-ion (ama-sibs) abhekene nebhethri eliphakeme le-lithium-ion (ama-lins) nge-lithium-iron-phosphate (LFP).

Iqembu lithole ukuthi ukushaja kanye nokushisa kunethonya eliphakeme ekumelaneni kwe-pulse kanye nokuphazamiseka kwama-sibs, kungasithana ama-sibs angakudinga ukusebenza kahle, ikakhulukazi amazinga aphansi.

• Ukuchaza ukumelana kwe-Pulse ngokuqhubekayo: Leli gama lisho ukuthi malini ama-voltage voltage amaconsi lapho kufakwa isidingo samandla kungazelelwe. Ngakho-ke, ucwaningo lukhombisa ukuthi amabhethri e-sodium-ion athinteka kakhulu ngamazinga okulima kanye namabhethri e-lithium-ion.

Cwaninga:

"Amabhethri we-Sodium-Ion [ama-Sibs] abonakala njengokufakwa esikhundleni kwe-libs," kusho ososayensi. "Noma kunjalo, umehluko ekuziphatheni kwe-electrochemical kwe-sodium ne-lithium kudinga ukwamiswa kwawo womabili ama-anode ne-lithium-ion carbon kuvame ukubonwa njengezinto ezisetshenziswayo ze-anode,

Baphinde bachaza nokuthi umsebenzi wabo bekuhloselwe ukugcwalisa igebe ocwaningweni, njengoba kusekhona ukuntuleka kolwazi mayelana nokuziphatha kukagesi kwama-sibs ngokuya ngamazinga okushisa ahlukahlukene kanye namacala anamacala ahlukahlukene.

Iqembu locwaningo elenziwe, ikakhulukazi, ukulinganiswa kokusebenza kukagesi emazingeni okushisa asuka kuma-degree angama-10 kuya kuma-degree angama-degrees amaseli ahlukene emazingeni okushisa ahlukene ngo-25 C.

"Ngaphezu kwalokho, siphenye ithonya lokushisa kanye ne-SOC ku-Direct Ukumelana Namanje (R DC) kanye ne-Galvanostatic Electrochemical Impodance Impectroscopy (GEIS)," kuchaziwe. "Ukuhlola umthamo osebenzayo, amandla asebenzayo, nokusebenza kwamandla kwamandla ngaphansi kwezimo ezinamandla, senze izivivinyo zokukwazi ukukwenza ngokusebenzisa amanani entengo ahlukile emazingeni okushisa ahlukile."

Abaphenyi balinganisa ibhethri le-lithium-ion, ibhethri le-sodium-ion eline-cathode ye-nickel-manganese, nebhethri le-lithium-ion eline-lfp cathode. Bobathathu bakhombise ama-voltage volterage hysteresis, okusho ukuthi i-voltage yabo evulekile ehlukile phakathi kokushaja nokukhipha.

"Kuyathakazelisa, ama-sibs, i-hysteresis yenzeka ngokuyinhloko kwa-Soc Soctions, okungukuthi, ngokuya ngezilinganiso zeseli, okungenzeka ngenxa ye-anode enzima yekhabhoni," kwagcizelelwa izifundiswa. "I-R DC kanye nokuvinjwa kweLib kukhombisa ukuxhomekeka okuncane kakhulu ku-SoC. Ngokuphambene nalokho, ama-SIBS, i-R DC kanye nokuphazamiseka kukhuphuke kakhulu ku-SoCS ngaphansi kwe-30%,

Ngaphezu kwalokho, babona ukuthi ukuncika kokushisa kwe-R_DC nokuvimbela kuphakeme ngama-sibs kunama-libs. "Ukuhlolwa kweLib akukhombisi ithonya elibalulekile le-SOC ekusebenzeni kohambo oluyindilinga. Ngokuphambene nalokho, ukuhamba ngebhayisekili ku-100% kuya ku-50%,"