Hiki ke hoʻonui ʻia ke ola pākaukau lithium ion e hoʻohui i ka mea hydrogen?

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Ua ʻike nā mea noiʻi o ka Raunns Rifo Moore National Laboratory (LLNL) hiki ke hoʻomaikaʻi maikaʻi ʻia ka nui o ka pākaukau inā lōʻihi ka hoʻohui ʻia ʻana o ka hydrogen element i nā electrodes o ka pā lithium-ion, e hoʻolōʻihi i ka manawa hana a hoʻolōʻihi i nā hana hoʻoili. ʻO ka pākaukau lithium ion he ʻano pākaukau rechargeable, a hoʻoneʻe ʻia ka lithium ion mai ka pākaukau i ka electrode maikaʻi i ka wā o ka hoʻokuʻu ʻana, a hoʻihoʻi ʻia ka lithium ion o ka electrode maikaʻi i ka electrode maikaʻi ʻole i ka wā o ka hoʻouka ʻana. ʻO ka pākaukau lithium ion he ʻano pākaukau rechargeable, a hoʻoneʻe ʻia ka lithium ion mai ka pākaukau i ka electrode maikaʻi i ka wā o ka hoʻokuʻu ʻana, a hoʻihoʻi ʻia ka lithium ion o ka electrode maikaʻi i ka electrode maikaʻi ʻole i ka wā o ka hoʻouka ʻana.

Loaʻa i nā ʻāpana lithium ion kekahi mau hiʻohiʻona koʻikoʻi, voltage, a me ka ikaika o ka ikehu, ʻo ka hana o kēia mau hiʻohiʻona e hoʻoholo hope ʻia e ka hui ʻana o nā lithium ion a me nā mea electrode. Ma ke ʻano o ka electrode, hiki i nā loli maʻalahi o ka kemika a me nā ʻano ke hoʻopili nui i ka pili ʻana o nā ion lithium i ko lākou paʻa ikaika. Ma o nā hoʻokolohua a me nā helu ʻana, ua ʻike nā mea noiʻi noiʻi o ka Livermore National Lab i loko o kahi pākaukau lithium-ion, ʻo ka hydrogen-treated graphene foam electrode e hōʻike i ka mana kiʻekiʻe a me ka hiki ke hoʻouna wikiwiki.

"Ke hāʻawi nei kēia mau ʻike i ka loiloi maikaʻi, e kōkua ana i ka hoʻolālā ʻana i nā electrodes mana kiʻekiʻe e pili ana i nā mea graphene," i ʻōlelo ai ʻo LLNL mea ʻepekema ʻo Morriswang. ʻO ia kekahi o nā mea kākau o kēia i paʻi ʻia ma ka Natural Science Report (NatureScientificReports Journal). ʻO nā mea Gallene i ka hoʻohana pāʻoihana o nā mea e mālama ai i ka ikehu, e komo pū me nā pākahi lithium-ion a me nā supercapacitors, e hoʻopilikia koʻikoʻi i kona hiki ke hana i kēia mea me ka haʻahaʻa haʻahaʻa.

ʻO ke ʻano hana hoʻohui kemika maʻamau e haʻalele i ka nui o nā mana hydrogen, he paʻakikī ke hoʻoholo i nā hopena o ka hana electrochemical o ka graphene. Ua ʻike nā mea noiʻi i ka Livermore Lab e hoʻomaikaʻi maikaʻi ka hydrogen element i ka mālama ʻana i ka wela kumu o ka graphene waiwai nui, hiki ke hoʻomaikaʻi maoli i ka hiki. Ma hope o nā hemahema o ka mea hydrogen a me nā hemahema i ka graphene, ua wehe ʻia ka pore liʻiliʻi, hiki ke hoʻoikaika i nā ion lithium i maʻalahi ke komo, a laila e hoʻomaikaʻi ai i ka wikiwiki o ka hoʻouna ʻana.

Hiki ke hā&39;awi &39;ia aku ka nui o ka cyclicable ma o ka lithium ion i ho&39;opili &39;ia i ka lihi hou (e pili ana paha i ka mea hydrogen). "ʻO ka hoʻomaikaʻi ʻana i ka hana o ka electrode he mea koʻikoʻi nui ia, hiki ke wehe i nā noi honua hou aʻe," wahi a ka mea noiʻi postdoctoral o ka Livermore Laboratory Materials Science a me ka mea kākau koʻikoʻi o nā pepa noiʻi. I mea e noi ai no ka hoʻohana ʻana i ka hydrogenation a me ka hydrogenation defects i loko o ka lithium ion storage properties o ka graphene, ua noi nā mea noiʻi i nā kūlana mālama wela like ʻole i hōʻike ʻia e ka mea hydrogen paʻa, e kālele ana i nā waiwai electrochemical o kāna 3D graphene nanofoam (GNF).

Hana ʻia me ka graphene hemahema. Hoʻohana ka poʻe noiʻi i ka 3D graphite nano foam no ka mea he ʻano hana like ʻole ia, me ka mālama ʻana i ka hydrogen, catalysis, filtration, insulation, absorption energy, capacitance desal, supercapacitors a me lithium-ion batteries, etc. ʻAʻole hiki ke paʻakikī nā hiʻohiʻona o ka graphene 3D foam non-adhesive adhesive no ka mea ʻoi aku ka paʻakikī o ka additive, a no laila hiki ke hoʻohana ʻia i koho kūpono no ka noiʻi mīkini.

"Ua ʻike mākou ma hope o ka hoʻomaʻamaʻa ʻana i ka mea hydrogen, ua holomua ka graphite olee foam electrode. Me ka hui pū ʻana o kēia hoʻokolohua, e ʻimi mākou i nā pilina maʻalahi a me ka holomua ma waena o nā hemahema a me nā hoʻonā hydrogen. I ka pane ana i ka hopena o kekahi mau hoʻololi liʻiliʻi i ka graphene kemika a me ka morphology, hiki ke lawe mai kahaha koʻikoʻi hopena i ka hana, "LLNL noiʻi no hoi kekahi mea kākau o keia haʻawina" Brandonwood.

Wahi a kēia haʻawina, hiki ke hoʻohana ʻia kēia mālama ʻana i ka hydrogen element i nā mea anode i hoʻokumu ʻia i ka graphene e hoʻokō ai i ka hoʻoili ʻana o ka lithium ion a me nā noi mālama hou.