Ngā kairangahau o teTe Whare Wānanga Hangarau o Munich(TUM) meTe Whare Wānanga o RWTH Aacheni Tiamana, kua whakaritea te mahi hiko o ngā pākahiko konutai-ion (SIB) kaha-teitei ki tērā o tētahi pākahiko lithium-ion (LIB) kaha-teitei hou me te katote lithium-rino-phosphate (LFP).

I kitea e te tīma he nui ake te awe o te āhua o te utu me te pāmahana ki te ātete o te pā me te aukati o ngā SIB i ngā LIB, ka awe pea tēnei i ngā kōwhiringa hoahoa, ā, e kī ana me whai pūnaha whakahaere pāmahana me te utu matatau ake ngā SIB hei arotau i te mahi, inā koa i ngā taumata utu iti iho.

• Hei whakamārama atu i te ātete pātītī: ko te kupu e pā ana ki te nui o te hekenga o te ngaohiko o te pākahiko ina hiahiatia he hiko ohorere. Nō reira, e whakaatu ana te rangahau he nui ake te pānga o te taumata utu me te pāmahana ki ngā pākahiko konutai-ion i ngā pākahiko lithium-ion.

Rangahau:

"Ko ngā pākahiko konutai-ion [SIB] e kitea whānuitia ana hei whakakapinga mō ngā LIB," te kī a ngā kaipūtaiao. "Heoi anō, ko ngā rerekētanga o te whanonga hikohiko o te konutai me te lithium me urutau ki te anode me te cathode. Ahakoa mō ngā pākahiko lithium-ion [LIB] ko te graphite te tikanga e whakamahia ana hei rauemi anode, mō ngā SIB ko te waro mārō te rauemi tino whai hua mō ngā SIB i tēnei wā."

I whakamārama anō hoki rātou ko te whāinga o tā rātou mahi he whakakī i tētahi āputa i roto i te rangahau, nā te mea kei te kore tonu he mōhiotanga mō te whanonga hiko o ngā SIB e pā ana ki ngā rerekētanga o te pāmahana me te āhua o ngā utu (SOC).

I whakahaerehia e te tīma rangahau ngā inenga mahi hiko i ngā pāmahana mai i te 10 nekehanga C ki te 45 nekehanga C me ngā inenga ngaohiko ara iahiko tuwhera o te pūtau-katoa i ngā pāmahana rerekē me ngā inenga haurua-pūtau o ngā pūtau e rite ana i te 25 C.

"I tua atu, i tirotirohia e mātou te awe o te pāmahana me te SOC ki te ātete o te au tika (R DC) me te inenga ārai hiko galvanostatic (GEIS)," te whakamārama. "Hei tirotiro i te kaha whakamahi, te kaha whakamahi, me te whai huatanga o te kaha i raro i ngā āhuatanga hihiri, i whakahaerehia e mātou ngā whakamātautau kaha tere mā te whakamahi i ngā tere kawenga rerekē i ngā pāmahana rerekē."

I inehia e ngā kairangahau tētahi pākahiko lithium-ion, tētahi pākahiko konutai-ion me tētahi katote nikara-manganese-rino, me tētahi pākahiko lithium-ion me tētahi katote LFP. I whakaatuhia e ēnei e toru te hysteresis ngaohiko, arā, he rerekē te ngaohiko o te ara iahiko tuwhera i waenga i te utu me te tango.

"He mea whakamere, mō ngā SIB, ko te hysteresis te mea nui i ngā SOC iti, e ai ki ngā inenga haurua-pūtau, tera pea nā te anode waro mārō," te whakanui a ngā tohunga. "He iti noa te whakawhirinakitanga o te R DC me te aukati o te LIB ki te SOC. He rerekē, mō ngā SIB, ka nui ake te pikinga o te R DC me te aukati i ngā SOC i raro i te 30%, engari ko ngā SOC teitei ake he pānga rerekē, ā, ka iti ake te uara R DC me te aukati."

I tua atu, i whakatauhia e rātou he teitei ake te whakawhirinakitanga o te R_DC me te aukati ki te pāmahana mō ngā SIB i ngā LIB. "Kāore ngā whakamātautau LIB e whakaatu i te awe nui o te SOC ki te whai huatanga o te haerenga hoki-hoki. He rerekē, mā te huri i ngā SIB mai i te 50% ki te 100% SOC ka taea te whakaiti i ngā ngaronga whai huatanga neke atu i te haurua ki te whakataurite ki te huri mai i te 0% ki te 50%," ko tā rātou whakamārama anō, me te kī ka tino piki ake te whai huatanga o ngā SIB ina huri i ngā pūtau i roto i te awhe SOC teitei ake ki te whakataurite ki te awhe SOC iti iho.