Kua matapaetia e ngā kairangahau tētahi whatunga waro hou, he rite ki te graphene, engari he hanganga moroiti matatini ake, ka arahi pea ki te hanga pākahiko waka hiko pai ake. Ko te graphene pea te momo waro motuhake rongonui rawa atu. Kua whakamahia hei ture hou pea mō te hangarau pākahiko lithium-ion, engari ka taea e ngā tikanga hanga hou te whakaputa i ngā pākahiko kaha ake.
Ka taea te kite i te graphene hei whatunga o ngā ngota waro, e honoa ana ia ngota waro ki ngā ngota waro e toru e tata ana hei hanga i ngā hexagon iti. Heoi, e whakapae ana ngā kairangahau, hei tāpiri atu ki tēnei hanganga honikoma tika, ka taea hoki te whakaputa i ētahi atu hanganga.
Koinei te rauemi hou i whakawhanakehia e tētahi tīma nō Te Whare Wānanga o Marburg i Tiamana me Te Whare Wānanga o Aalto i Pinirana. I ārahi rātou i ngā ngota waro ki ngā huarahi hou. Ko te whatunga biphenyl e kiia nei ko ngā hexagons, ngā tapawhā me ngā octagons, he whatunga matatini ake i te graphene. E ai ki ngā kairangahau, nō reira, he rerekē rawa ōna āhuatanga hiko, ā, i ētahi āhuatanga, he pai ake te hiahia.
Hei tauira, ahakoa te uara o te graphene mō tōna kaha hei haurua-ira, he rite tonu te mahi a te whatunga waro hou ki te konganuku. Inaa, ina 21 noa iho ngā ngota o te whānui, ka taea te whakamahi i ngā rārangi o te whatunga biphenyl hei miro kawe hiko mō ngā taputapu hiko. I tohu rātou i tēnei tauine, he rite tonu te mahi a te graphene ki te haurua-ira.
I mea te kaituhi matua: "Ka taea hoki te whakamahi i tēnei momo whatunga waro hou hei rauemi anode pai rawa atu mō ngā pākahiko lithium-ion. Ki te whakatauritea ki ngā rauemi e hangai ana ki te graphene o nāianei, he nui ake te kaha rokiroki lithium."
Ko te anode o te pākahiko lithium-ion he mea hanga ki te karāpeti kua horahia ki runga i te pepa parahi. He nui te kawe hiko, ehara i te mea he mea nui mō te whakanoho i ngā katote lithium ki waenganui i ōna paparanga, engari nā te mea ka taea tonu e ia te mahi pera mō ngā mano tini huringa. Nā tēnei ka tino whai hua te pākahiko, engari he pākahiko hoki ka roa te ora me te kore e pakaru.
Heoi anō, mā ngā huarahi whai hua ake, iti ake hoki e ahu mai ana i tēnei whatunga waro hou ka nui ake te kaha o te rokiroki pūngao pākahiko. Tērā pea ka iti ake, ka māmā ake hoki ngā waka hiko me ētahi atu taputapu e whakamahi ana i ngā pākahiko lithium-ion.
Heoi, pērā i te graphene, ko te rapu huarahi ki te hanga i tēnei putanga hou i runga i te tauine nui te wero e whai ake nei. Ko te tikanga huihuinga o nāianei e whakawhirinaki ana ki tētahi mata koura tino maeneene, ā, i reira ka hangaia e ngā ngota waro he mekameka hexagonal hono. Ka honoa e ngā tauhohenga o muri mai ēnei mekameka hei hanga i ngā āhua tapawhā me te octagonal, ka rerekē te hua whakamutunga i te graphene.
I whakamārama ngā kairangahau: "Ko te whakaaro hou ko te whakamahi i ngā matū ngota kua whakarerekētia hei whakaputa i te biphenyl hei utu mō te graphene. Ko te whāinga inaianei ko te whakaputa i ngā rau rauemi nunui ake kia pai ake ai te mārama ki ōna āhuatanga."
Wā tuku: Hanuere-06-2022
