Ua hana nā kānaka ʻepekema i nā pūnaewele sodium-ion (Na-ion) me ka electrolyte paʻa • KA ELECTRIC
Ua hana nā kānaka ʻepekema mai ke Kulanui o Austin (Texas, USA) i nā pūnaewele Na-ion me kahi electrolyte paʻa. ʻAʻole lākou i mākaukau no ka hana ʻana, akā ke nānā aku nei lākou i ka hoʻohiki ʻana: ua like lākou i kekahi mau mea me nā cell lithium-ion, kū i nā haneli he nui o ka hana, a hoʻohana i kahi mea maʻalahi a kūʻai aku - sodium.
Asphalt, graphene, silicon, sulfur, sodium - na kēia mau mea a me nā mea e hiki ai ke hoʻomaikaʻi i nā mea uila i ka wā e hiki mai ana. Hoʻokahi mea like lākou: hiki ke loaʻa (koe ka graphene) a hoʻohiki i ka hana like me, a ʻoi aku paha ka maikaʻi i ka wā e hiki mai ana, lithium.
ʻO kahi manaʻo hoihoi e hoʻololi i ka lithium me ka sodium. Aia nā mea ʻelua i ka pūʻulu like o nā metala alkali, ua like like nā mea ʻelua, akā ʻo ka sodium ke ono o ka mea nui loa i loko o ka ʻōpala o ka honua a hiki ke loaʻa iā mākou ma ke kumukūʻai. Ma nā pūnaewele Na-ion i hoʻomohala ʻia ma Texas, ua hoʻololi ʻia ka lithium i ka anode e ka sodium, a ua hoʻololi ʻia nā electrolytes flammable e nā electrolytes sulfur paʻa. (kahi kumu).
I ka hoʻomaka ʻana, ua hoʻohana ʻia kahi cathode ceramic, akā i ka wā o ka hana (ka ʻae ʻana i ka uku / hoʻoili kālā) ua hoʻololi ʻia ka nui a hāʻule. No laila, ua hoʻololi ʻia me kahi cathode maʻalahi i hana ʻia me nā mea kūlohelohe. ʻO ke kelepona i hoʻolālā ʻia ma kēia ʻano hana me ka ʻole o ka hāʻule ʻana no ka ʻoi aku o 400 charge / discharge cycles, a ua loaʻa i ka cathode kahi ikehu o 0,495 kWh / kg (ʻaʻole pono e huikau kēia waiwai me ka ikehu ikehu o ke kelepona holoʻokoʻa a i ʻole ka pākaukau).
> ʻO Tesla Robotaxi mai 2020. Hele ʻoe i kahi moe a hele ʻo Tesla a loaʻa kālā iā ʻoe.
Ma hope o ka hoʻomaikaʻi hou ʻana o ka cathode, hiki ke hiki i ke kiʻekiʻe o 0,587 kWh / kg, e pili ana i nā waiwai i loaʻa ma nā cathodes o nā cell lithium-ion. Ma hope o 500 mau kaʻina hana, hiki i ka pākaukau ke hoʻopaʻa i ka 89 pakeneka o kona hiki.ʻo ia hoʻi e pili ana i nā palena o nā pūnaewele Li-ion [nāwaliwali].
Hoʻohana ʻia nā pūnaewele Na-ion ma kahi haʻahaʻa haʻahaʻa ma mua o nā cell lithium-ion, no laila hiki ke hoʻohana ʻia i ka mana uila uila. Eia naʻe, ua hoʻoholo pū ka hui Austin e neʻe i ka volta kiʻekiʻe i hiki ke hoʻohana ʻia nā cell i nā kaʻa uila. No ke aha mai? ʻO kekahi o nā palena nui o ke kaʻa ʻo ia kona mana, a hilinaʻi pololei ia i ka ikaika o ka manawa a me ka uila ma nā electrodes.
Pono e hoʻohui ʻia ʻo John Goodenough, ka mea nāna i hana i nā cell lithium-ion, mai ke Kulanui o Austin.
Wehe kiʻi: Ka hopena o kahi puʻupuʻu liʻiliʻi o ka sodium i ka wai (c) ʻO ka loea hoʻomanaʻo ʻo Ron White - Hoʻomaʻamaʻa hoʻomanaʻo a hoʻomaʻamaʻa lolo / YouTube. Nā laʻana hou aku:
E hoihoi paha kēia iā ʻoe:
