Whakaarohia he matakite e kī ana ki ō mātua, i te rā i whānau ai koe, kia hia te roa o tō oranga. Tērā pea he wheako rite mō ngā kaimātai matū pākahiko e whakamahi ana i ngā tauira rorohiko hou hei tatau i te roanga o te ora o te pākahiko i runga i te huringa kotahi o ngā raraunga whakamātautau.

I roto i tētahi rangahau hou, kua tahuri ngā kairangahau i te Argonne National Laboratory o te US Department of Energy (DOE) ki te mana o te ako mīhini hei matapae i te roanga o te ora o te whānuitanga o ngā matū pākahiko rerekē. Mā te whakamahi i ngā raraunga whakamātautau i kohia i Argonne mai i tētahi huinga o ngā pākahiko 300 e tohu ana i ngā matū pākahiko e ono, ka taea e ngā kaipūtaiao te whakatau tika i te roa o te huringa tonu o ngā pākahiko rerekē.

Kua whakamahia e ngā kairangahau o Argonne ngā tauira ako mīhini hei matapae i te roa o te huringa pākahiko mō te whānuitanga o ngā matū rerekē. (Whakaahua nā Shutterstock/Sealstep.)

I roto i te raupaparorohiko ako mīhini, ka whakangungua e ngā kaipūtaiao tētahi papatono rorohiko ki te whakatau whakatau i runga i tētahi huinga raraunga tuatahi, kātahi ka tango i ngā mea kua akohia e ia mai i taua whakangungu hei whakatau kaupapa i runga i tētahi atu huinga raraunga.

"Mō ngā momo whakamahinga pākahiko katoa, mai i ngā waea pūkoro ki ngā waka hiko ki te rokiroki whatunga, he mea nui te roa o te ora o te pākahiko mō ia kaihoko," te kī a te kaipūtaiao rorohiko o Argonne, a Noah Paulson, he kaituhi o te rangahau. ​"Ko te hurihanga o te pākahiko i ngā mano tini wā tae noa ki te pakaru ka roa pea ngā tau; ka hangaia e tā mātou tikanga he momo kīhini whakamātautau rorohiko ka taea e mātou te whakatau wawe i te mahi a ngā pākahiko rerekē."

"I tēnei wā, ko te huarahi anake hei aromatawai i te memeha haere o te kaha o te pākahiko ko te huri i te pākahiko," te tāpiri a Susan "Sue" Babinec, he tohunga matū hiko o Argonne, tētahi atu kaituhi o te rangahau. "He tino utu nui, ā, he roa te wā e pau ana."

E ai ki a Paulson, he uaua te tukanga whakarite i te roa o te ora o te pākahiko. ​"Ko te mea pono, kāore ngā pākahiko e roa ake, ā, ko te roa o te ora e whakawhirinaki ana ki te āhua o tā tātou whakamahinga, tae atu ki tōna hoahoa me tōna hononga," tana kī. ​"Tae noa ki tēnei wā, kāore anō kia kitea he huarahi pai hei mōhio ki te roa o te ora o te pākahiko. Ka hiahia te iwi ki te mōhio kia pēhea te roa o te wā e toe ana ki te whakapau moni ki tētahi pākahiko hou."

Ko tētahi āhuatanga ahurei o te rangahau ko te whakawhirinaki ki ngā mahi whakamātautau whānui i mahia ki Argonne i runga i ngā momo rauemi katote pākahiko, inā koa ko te katote nickel-manganese-cobalt (NMC) kua patenttia a Argonne. ​"He pākahiko ā mātou e tohu ana i ngā matū rerekē, he rerekē ngā huarahi e pakaru ai, e hinga ai hoki," te kī a Paulson. ​"Ko te uara o tēnei rangahau ko te homai i ngā tohu e whakaatu ana i te mahi a ngā pākahiko rerekē."

"Mā ētahi atu rangahau i tēnei wāhanga ka taea te ārahi i te heke mai o ngā pākahiko lithium-ion," te kī a Paulson. "Ko tētahi o ngā mea ka taea e mātou ko te whakangungu i te rauropi ki tētahi matū e mōhiotia ana, me te tuku i a ia ki te matapae i tētahi matū e kore e mōhiotia," tana kī. "Ko te tikanga, ka āwhina pea te rauropi ki te tohu i a tātou ki te huarahi ki ngā matū hou me ngā matū kua whakapaitia e tuku ana i te roa o te ora."

Mā tēnei, e whakapono ana a Paulson ka taea e te rauropi ako mīhini te whakatere i te whanaketanga me te whakamātautau i ngā rauemi pākahiko. ​"Me kī he rauemi hou tāu, ā, ka hurihia e koe kia maha ngā wā. Ka taea e koe te whakamahi i tā mātou rauropi hei matapae i tōna roa, kātahi ka whakatau mēnā kei te hiahia tonu koe ki te huri haere mā te whakamātautau, kāore rānei."

"Mēnā he kairangahau koe i roto i tētahi taiwhanga, ka taea e koe te kimi me te whakamātautau i ngā rauemi maha atu i roto i te wā poto ake nā te mea he tere ake te huarahi hei aromatawai i aua rauemi," te tāpiri a Babinec.

He tuhinga i ahu mai i te rangahau, ​"I taea e te hangarau āhuatanga mō te ako mīhini te matapae wawe i te roanga o te ora o te pākahiko," i puta i te putanga ipurangi o te 25 o Pēpuere o te Journal of Power Sources.

Haunga a Paulson rāua ko Babinec, ko ētahi atu kaituhi o te pepa ko Joseph Kubal o Argonne, ko Logan Ward, ko Saurabh Saxena, me Wenquan Lu.

I tautokona te rangahau e te putea Rangahau me te Whakawhanaketanga i Whakahaeretia e te Whare Rangahau o Argonne (LDRD).