Loaʻa ka haʻawina i ke kī no ka hoʻomaikaʻi ʻana i ke ola pākaukau: Nā pilina ma waena o nā ʻāpana

Wahi a nā hōʻike hoʻolaha haole, ʻo Feng Lin, he kumu aʻoaʻo ma ke Keʻena ʻOihana Kimia ma Virginia Tech College of Science, a ua ʻike kāna hui noiʻi ua ʻike ʻia ka pohō ʻana o ka pākaukau mua e nā waiwai o nā ʻāpana electrode pākahi, akā ma hope o ka nui o nā uku. Ma hope o ka hoʻowili ʻana, ʻoi aku ka mea nui o ka hoʻopili ʻana o kēlā mau ʻāpana.

"Ke hōʻike nei kēia haʻawina i nā mea huna o ke ʻano o ka hoʻolālā ʻana a me ka hana ʻana i nā electrodes pākaukau no ke ola pōʻai lōʻihi," wahi a Lin. I kēia manawa, ke hana nei ka lab o Lin i ka hoʻolālā hou ʻana i nā electrodes pākaukau no ka hana ʻana i ka hoʻopiʻi wikiwiki, ke kumu kūʻai haʻahaʻa, ʻoi aku ka lōʻihi o ke ola a me ka hoʻolālā electrode pili i ke kaiapuni.

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Loaʻa ka haʻawina i ke kī no ka hoʻomaikaʻi ʻana i ke ola pākaukau: Nā pilina ma waena o nā ʻāpana
GasgooLiu Liting5小时前
Wahi a nā hōʻike hoʻolaha haole, ʻo Feng Lin, he kumu aʻoaʻo ma ke Keʻena ʻOihana Kimia ma Virginia Tech College of Science, a ua ʻike kāna hui noiʻi ua ʻike ʻia ka pohō ʻana o ka pākaukau mua e nā waiwai o nā ʻāpana electrode pākahi, akā ma hope o ka nui o nā uku. Ma hope o ka hoʻowili ʻana, ʻoi aku ka mea nui o ka hoʻopili ʻana o kēlā mau ʻāpana.

"Ke hōʻike nei kēia haʻawina i nā mea huna o ke ʻano o ka hoʻolālā ʻana a me ka hana ʻana i nā electrodes pākaukau no ke ola pōʻai lōʻihi," wahi a Lin. I kēia manawa, ke hana nei ka lab o Lin i ka hoʻolālā hou ʻana i nā electrodes pākaukau no ka hana ʻana i ka hoʻopiʻi wikiwiki, ke kumu kūʻai haʻahaʻa, ʻoi aku ka lōʻihi o ke ola a me ka hoʻolālā electrode pili i ke kaiapuni.

Puna kiʻi: Feng Lin

"I ka manawa e ʻae ai ka hoʻolālā electrode i kēlā me kēia ʻāpana e pane wikiwiki i nā hōʻailona uila, e loaʻa iā mākou kahi pahu mea hana nui e hoʻopaʻa wikiwiki i nā pila," wahi a Lin. “ʻOliʻoli mākou e hiki i ko mākou ʻike ʻana i ka hanauna e hiki mai ana o nā pākaukau wikiwiki haʻahaʻa haʻahaʻa. ”

Ua hana ʻia ka noiʻi me ka hui pū ʻana me ka US Department of Energy's SLAC National Accelerator Laboratory, Purdue University a me ka European Synchrotron Radiation Facility. ʻO Zhengrui Xu lāua ʻo Dong Ho, nā hoa postdoctoral ma Lin's lab, he mau mea kākau pū ma ka pepa, alakaʻi i ka hana electrode, ka hana ʻana i ka pākaukau, a me ke ana ʻana i ka hana pākaukau, a me ke kōkua ʻana i nā hoʻokolohua X-ray a me ka ʻikepili ʻikepili.

"ʻO nā poloka hale maʻamau kēia mau ʻāpana e hana i nā electrodes pākaukau, akā i ka hoʻonui ʻia ʻana, pili kēia mau ʻāpana me kekahi," wahi a SLAC ʻepekema ʻo Yijin Liu, he hoa ma Stanford Synchrotron Radiation Light Source (SSRL). "Inā makemake ʻoe e hana i nā pākaukau ʻoi aku ka maikaʻi, pono ʻoe e ʻike pehea e hui pū ai i nā ʻāpana."

Ma ke ʻano o ke aʻo ʻana, ua hoʻohana ʻo Lin, Liu a me nā hoa hana ʻē aʻe i nā ʻenehana ʻike kamepiula e aʻo ai i ke ʻano o ka haki ʻana o nā ʻāpana pākahi i hana i nā electrodes o nā pākaukau rechargeable i ka wā. ʻO ka pahuhopu i kēia manawa ʻaʻole ia e aʻo i nā ʻāpana pākahi wale nō, akā i nā ala e hana like ai lākou e hoʻonui a hōʻemi paha i ke ola pākaukau. ʻO ka pahuhopu nui ke aʻo ʻana i nā ala hou e hoʻonui ai i ke ola o nā hoʻolālā pākaukau.

Ma ke ʻano he haʻawina, ua aʻo ka hui i ka cathode pākaukau me nā kukui X. Ua hoʻohana lākou i ka tomography X-ray no ke kūkulu hou ʻana i ke kiʻi 3D o ka cathode o ka pākaukau ma hope o nā pōʻai like ʻole. A laila ʻoki lākou i kēia mau kiʻi 3D i mau ʻāpana 2D a hoʻohana i nā ala ʻike kamepiula e ʻike ai i nā ʻāpana. Ma waho aʻe o Lin lāua ʻo Liu, ua komo pū ka noiʻi SSRL postdoctoral researcher Jizhou Li, Purdue University mechanical engineering professor Keije Zhao, a me Purdue University graduate student Nikhil Sharma.

Ua ʻike hope ka poʻe noiʻi ma mua o 2,000 mau ʻāpana pākahi, e helu ana ʻaʻole wale nā ​​hiʻohiʻona o kēlā me kēia ʻāpana e like me ka nui, ke ʻano, a me ka ʻili o ka ʻili, akā me nā hiʻohiʻona e like me ka pinepine o ka pili pono ʻana o nā ʻāpana a me ka nui o ka loli ʻana o nā ʻāpana.

A laila, nānā lākou i ke ʻano o kēlā me kēia waiwai i wāwahi ai i nā ʻāpana, a ʻike ʻia ma hope o 10 mau pōʻaiapili, ʻo nā mea nui loa ka waiwai o kēlā me kēia ʻāpana, me ke ʻano o ka spherical o nā ʻāpana a me ka ratio o ka nui o ka nui o ka ili. Ma hope o 50 mau pōʻaiapuni, ʻo ka hui ʻana a me nā waiwai pūʻulu i hoʻoneʻe i ka palaho—e like me ka mamao o nā ʻāpana ʻelua, ka nui o ka loli ʻana o ke ʻano, a inā paha he ʻano ʻano like nā ʻāpana like ʻole o ka pōleʻa elongated.

"ʻO ke kumu ʻaʻole ʻo ia wale nō ka ʻāpana ponoʻī, akā ʻo ka launa pū ʻana o ka particle-particle," wahi a Liu. He mea nui kēia ʻike no ka mea hiki i nā mea hana ke hoʻomohala i nā ʻenehana e hoʻomalu i kēia mau waiwai. No ka laʻana, hiki iā lākou ke hoʻohana i nā māla magnetic a i ʻole ka uila E hoʻohālikelike i nā ʻāpana elongated me kekahi, ʻo nā ʻike hou loa e hōʻike ana e hoʻolōʻihi ʻia ke ola pākaukau.

Ua hoʻohui ʻo Lin: "Ke noiʻi ikaika nei mākou i ka hana ʻana o nā pā EV ma lalo o ka hoʻopiʻi wikiwiki a me nā kūlana haʻahaʻa haʻahaʻa. Ma waho aʻe o ka hoʻolālā ʻana i nā mea hou e hiki ke hōʻemi i nā kumukūʻai pākaukau ma o ka hoʻohana ʻana i nā lako maka liʻiliʻi a ʻoi aku ka nui, ua hoʻomau ʻia kā mākou hale hana e hoʻomaopopo i ke ʻano o ka pākaukau ma waho o ke kaulike. Ua hoʻomaka mākou e aʻo i nā mea pākaukau a me kā lākou pane ʻana i nā wahi paʻakikī. "