Ua hoʻomohala nā kānaka noiʻi i kahi ʻano hana hou e hiki ai ke hoʻōla i ka 100% o ka alumini a me 98% o ka lithium i loko o nā pila kaʻa uila.
Ua ʻōlelo nā kānaka noiʻi Suedena ua hoʻomohala lākou i kahi ala hou a ʻoi aku ka maikaʻi no ka hana hou ʻana i nā pila o nā kaʻa uila.
"No ka mea hiki ke hoʻonui ʻia ke ʻano hana, ke manaʻolana nei mākou e hoʻohana ʻia ia i ka ʻoihana i nā makahiki e hiki mai ana," wahi a ke alakaʻi noiʻi ʻo Martina Petranikova.
I ka hydrometallurgy kuʻuna, ua hoʻoheheʻe ʻia nā metala āpau i loko o nā pila kaʻa uila i loko o nā waikawa inorganic.
A laila wehe ʻia nā "mea haumia" e like me ka alumini a me ke keleawe a hoʻihoʻi ʻia nā metala waiwai e like me ka cobalt, nickel, manganese a me ka lithium.
ʻOiai he liʻiliʻi ka nui o ke koena o ka alumini a me ke keleawe, pono ia i kekahi mau ʻanuʻu hoʻomaʻemaʻe, a ʻo kēlā me kēia ʻanuʻu i ke kaʻina hana hiki ke manaʻo ʻia he nalowale o ka lithium.
Ua hoʻomohala nā kānaka noiʻi ma ke Kulanui ʻenehana ʻo Chalmers ma Suedena i kahi ʻano hana hou e hiki ai ke hoʻōla i ka 100% o ka alumini a me 98% o ka lithium i loko o nā pila kaʻa uila.
Hoʻopili ia i ka hoʻololi ʻana i ke kaʻina hana o kēia manawa a me ka hana nui ʻana i ka lithium a me ka alumini.
I ka manawa like, ua hoʻemi ʻia ka pohō o nā mea maka waiwai nui e like me ka nickel, cobalt a me ka manganese.
"A hiki i kēia manawa, ʻaʻohe mea i hiki ke loaʻa nā kūlana kūpono e hoʻohana ai i ka waikawa oxalic e hoʻokaʻawale i ka nui o ka lithium me ka wehe ʻana i nā alumini āpau i ka manawa like," wahi a Leah Rouquette, he haumāna puka ma ke Keʻena Kemika a me ke ʻenekinia Kemika ma ke Kulanui ʻo Chalmers.
"ʻOiai aia nā pila a pau i loko o ka alumini, pono mākou e hiki ke wehe iā ia me ka ʻole o ka nalowale ʻana o nā metala ʻē aʻe."
I loko o kā lākou keʻena hoʻokolohua hana hou pila, ua kau ʻo Rouquette a me ke alakaʻi noiʻi ʻo Petranikova i nā pila kaʻa i hoʻohana ʻia a me ko lākou mau mea i kuʻi ʻia i loko o kahi uhi uahi.
Hoʻoheheʻe ʻia ka pauka ʻeleʻele i wili maikaʻi ʻia i loko o kahi wai organik maopopo i kapa ʻia ʻo ka waikawa oxalic, kahi mea ʻōmaʻomaʻo i loaʻa i nā mea kanu e like me ka rhubarb a me ka spinach.
E kau i ka pauka a me ka wai i loko o kahi mīkini e like me ka mīkini wili kīhini. Maanei, ua hoʻoheheʻe ʻia ka alumini a me ka lithium i loko o ka pila i loko o ka waikawa oxalic, e waiho ana i nā metala i koe i ke ʻano paʻa.
ʻO ka hana hope loa o ke kaʻina hana, ʻo ia ka hoʻokaʻawale ʻana i kēia mau metala e unuhi i ka lithium, a laila hiki ke hoʻohana ʻia e hana i nā pila hou.
"No ka mea, he ʻokoʻa loa nā ʻano o kēia mau metala, ʻaʻole mākou e manaʻo he mea paʻakikī ke hoʻokaʻawale iā lākou. ʻO kā mākou ʻano hana he ala hou e hoʻohiki ai e hana hou i nā pila e pono ke ʻimi hou aku," wahi a Rouquette.
Ua hoʻohana ka hui noiʻi a Petranikova i nā makahiki he nui e hana ana i nā noiʻi ʻoi loa i ka hana hou ʻana i nā metala i loko o nā pila lithium-ion.
Ua komo ʻo ia i nā papahana hana like ʻole me nā ʻoihana e pili ana i ka hana hou ʻana o nā pila kaʻa uila. He hoa ka hui i nā papahana noiʻi a me ka hoʻomohala nui a ʻo kāna mau lama e komo pū ana me Volvo lāua ʻo Northvolt.