Nā kumu o ka hana ʻana o ka pā lithium i ka hoʻoilo

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - ተንቀሳቃሽ የኃይል ጣቢያ አቅራቢ

Mai ke komo ʻana i ka mākeke, ua hoʻohana nui ʻia nā pā lithium-ion i ko lākou mau pono o ko lākou ola lōʻihi, ka mana kikoʻī nui, ʻaʻohe hopena hoʻomanaʻo. Haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa i loko o ka pā uila lithium ion, atenuation koʻikoʻi, hoʻonui ʻia ka pōʻaiapuni maikaʻi ʻole, a me ke ʻano lithium maopopo, a me ka deinterlaxing lithium imbalance. Eia nō naʻe, ke hoʻonui mau nei ka noi, ke hoʻonui nei ka palena o ka hana haʻahaʻa haʻahaʻa o nā pā lithium-ion.

Wahi a nā hōʻike, ʻo ka hiki ke hoʻokuʻu ʻia o ka pākaukau lithium ion ma kahi o 31.5% wale nō ma ka lumi lumi ma -20 ° C. ʻO ka mahana hana maʻamau lithium ion ma waena o -20 a + 55 ° C.

Eia nō naʻe, ma nā kahua o ka aerospace, kūikawā, nā kaʻa uila, a me nā mea ʻē aʻe, hiki ke koi ʻia ka pākaukau e hana maʻamau ma -40 ° C. No laila, he mea nui ka hoʻomaikaʻi ʻana i nā waiwai haʻahaʻa haʻahaʻa o nā pā lithium ion.

Ma nā kumu i hoʻopaʻa ʻia i nā pā lithium-ion, ua hoʻonui ʻia ka viscosity o ka electrolyte, ʻoiai i hoʻopaʻa ʻia i kahi hapa, e hopena i kahi haʻahaʻa haʻahaʻa o ka pā lithium ion, e hopena i ka emi ʻana o ka conductivity o ka pā lithium ion. ʻO ka hoʻohālikelike ʻana ma waena o ka electrolyte a me ka electrode maikaʻi ʻole a me ka diaphragm ua hōʻemi ʻia i kahi haʻahaʻa haʻahaʻa haʻahaʻa. ʻO ka electrode maikaʻi ʻole o ka pā lithium ion ma lalo o nā kaiapuni haʻahaʻa haʻahaʻa ua hoʻohaʻahaʻa nui ʻia, a ua hoʻohālikelike ʻia ka lithium metala metala me kahi electrolyte, a ʻo ka hoʻopaʻa ʻana o ka huahana ka hopena i kahi mānoanoa electrolyte interface (SEI).

 Hoʻemi ʻia nā ʻāpana lithium ion i loko o ka ʻōnaehana diffusion kūloko i ka mea hana ma lalo o ka haʻahaʻa haʻahaʻa haʻahaʻa, a ua hoʻonui nui ʻia ka impedance transfer charge (RCT). Kūkākūkā e pili ana i ka hoʻoholo ʻana i ka hana haʻahaʻa haʻahaʻa o nā pā lithium-ion: He hopena koʻikoʻi ka electrolyte i ka haʻahaʻa haʻahaʻa haʻahaʻa o ka haʻahaʻa haʻahaʻa o ka haʻahaʻa haʻahaʻa o ka haʻahaʻa haʻahaʻa haʻahaʻa. ʻO ka pilikia i loko o ka pākaukau haʻahaʻa haʻahaʻa: e nui ka viscosity o ka electrolyte, lohi ka wikiwiki o ka hoʻokele ion, ka hopena i ka wikiwiki o ka neʻe ʻana o ka electron o waho kaapuni, no laila ua polarized nui ka pākaukau, a ʻo ka hoʻopiʻi a me ka hoʻokuʻu ʻana he emi nui.

ʻOi loa i ka wā e hoʻopiʻi ana i ka haʻahaʻa haʻahaʻa, hiki i nā lithium ion ke hana maʻalahi i ka lithium delegra ma ka ʻili o ka electrode maikaʻi ʻole, e hopena i ka pau ʻole o ka pā. ʻO ka hana haʻahaʻa haʻahaʻa o ka electrolyte e pili kokoke ana i ka nui o ka electrolyte pono&39;ī, a wikiwiki ka hoʻouna ʻana i ka ion o ka conductivity uila, a hiki ke hōʻike ʻia ka nui o ka hiki ma nā haʻahaʻa haʻahaʻa. ʻO ka nui o nā paʻakai lithium i ka electrolyte, ʻoi aku ka nui o ka neʻe ʻana, ʻoi aku ka kiʻekiʻe o ka conductivity.

ʻO ka wikiwiki o ka conductivity uila, ʻoi aku ka wikiwiki o ka conductivity ion, ʻoi aku ka liʻiliʻi o ka polarization, ʻoi aku ka maikaʻi o ka hana o ka pākaukau ma ka wela haʻahaʻa. No laila, ʻo ka conductivity kiʻekiʻe kahi kūlana kūpono no ka hoʻokō ʻana i ka hana haʻahaʻa haʻahaʻa maikaʻi o nā pā lithium ion ʻO ka conductivity uila electrolyte pili i ka haku mele ʻana o ka electrolyte, a ʻo ka viscosity o ka solvent e hoʻomaikaʻi i ke ala o ka conductivity uila electrolyte.

Maikaʻi ka wai o ka solvent ma kahi haʻahaʻa haʻahaʻa o ka solvent ka mea e hōʻoia ai i ka lawe ʻana i ka ion, a ʻo ka membrane electrolyte paʻa i hana ʻia e ka electrolyte i ka haʻahaʻa haʻahaʻa electrolyte he kī hoʻi ia e hoʻopili ai i ka conductance lithium ion, a ʻo RSEI ka impedance nui o kahi pākaukau lithium ion i kahi haʻahaʻa haʻahaʻa haʻahaʻa. Manaʻo 2: ʻO ka hoʻopaʻa ʻana i ke kumu nui i ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa o nā pā lithium ion he piʻi nui i ka LI + diffusion impedance ma nā haʻahaʻa haʻahaʻa, akā ʻaʻole ke kiʻiʻoniʻoni SEI. ʻO nā hiʻohiʻona haʻahaʻa haʻahaʻa o ka Lithium Ion Battery Positive Materials - 1 - Low Temperature Characteristics of Layered Structure Positive Materials ʻO ka papa hana i loaʻa i kahi kaila diffusion lithium-ion hoʻokahi-dimensional ʻaʻole like ʻole, a he ʻekolu-dimensional channel structure stability, ʻo ia ka mea kūʻai mua o ka pākaukau lithium ion.

ʻO kona mau mea i hōʻike ʻia ʻo LiiCoO2, Li (CO1-XNIX) O2 a me Li (Ni, Co, Mn) O2 Xie Xiaohua et al. Lawe ʻo LiCoo2 / MCMB i mea noiʻi, hoʻāʻo i kona ʻano haʻahaʻa haʻahaʻa haʻahaʻa.

 Hōʻike nā hopena i ka emi ʻana o ka mahana, hāʻule ka paepae hoʻokuʻu mai 3.762V (0 ° C) a i 3.207V (-30 ° C); ua ho&39;emi &39;ia ka nui o ka pila mai ka 78.

98mA · h (0 ° C) i 68.55mA · h (-30 ° C) - 2 - nā hiʻohiʻona haʻahaʻa haʻahaʻa o ka spinel structure ʻano mea maikaʻi Spinel structure LiMn2O4 mea maikaʻi, ma muli o ke kumu kūʻai maikaʻi loa, nā mea ʻawaʻawa ʻole ma muli o ke ʻano co.

 ʻO Peng Zhengshun, e hōʻike ana he nui ka hana electrochemical o LiMn2O4 mau mea electrode maikaʻi, a ua hoʻohana ʻia ka RCT ma ke ʻano he laʻana: ʻo ka RCT o LIMN2O4 synthesized e ke kiʻekiʻe kiʻekiʻe o ka paʻa paʻa paʻa ʻoi aku ka kiʻekiʻe ma mua o ke ʻano sol gel, a aia kēia ʻano i ka lithium ion Ua ʻike pū ʻia ka coefficient diffusion. ʻO ke kumu ma muli o ke ʻano o nā ʻano hana synthetic he hopena nui i ka crystallinity huahana a me ka morphology - 3 - haʻahaʻa wela hiʻona o ka maikaʻi electrode mea o ka phosphate nenoaiu LIFEPO4 ua lilo i ke kino nui o ka mana o keia manawa maikai mea ma muli o kona maikai leo paʻa a me ka palekana, a me ka ternary mea.

ʻO ka haʻahaʻa haʻahaʻa haʻahaʻa o ka hao phosphate no ka mea ʻo ka mea ponoʻī ka insulator, haʻahaʻa ka conductivity electron, haʻahaʻa ka diffusion lithium ion, no laila ke piʻi aʻe ke kūpaʻa kūloko o ka pākaukau, kiʻekiʻe ka polarization, paʻa ʻia ka uku pākaukau a me ka hoʻokuʻu ʻana, no laila ʻaʻole kūpono ka hana haʻahaʻa. ʻO Valley Yidi, a me nā mea ʻē aʻe, i ka wā e aʻo ai i ka hana a me ka hoʻokuʻu ʻana o LifePO4 i nā haʻahaʻa haʻahaʻa, ʻo 64% ka maikaʻi o Kulen ma 96% a me -20 ° C ma 55 ° C a 0 ° C, a ʻo ka hoʻokuʻu ʻana mai 55 ° C 3.

11V. 2.62V o ka lawe ʻana i -20 ° C.

 ʻO XING et al, ʻike ʻia, ma hope o ka hoʻohui ʻana o nā mea hana conductive nanocarbon, ua emi nā waiwai electrochemical o LiFePO4, a ua hoʻomaikaʻi ʻia ka hana haʻahaʻa haʻahaʻa; ua hāʻule ka volta hoʻokuʻu o LiFePO4 ma hope o ka hoʻololi ʻana 3.40 V i 3.09V ma -25 ° C, ʻo 9 wale nō ka emi ʻana.

12%; a he 57.3% ka maikaʻi o ka pākaukau, ʻoi aku ka kiʻekiʻe ma mua o 53.4% ​​o ka mea hana uila non-nanocarbon ma -25 ° C.

 I kēia mau lā, ua hoʻokipa ʻo LIMNPO4 i ka hoihoi o ka poʻe. Ua ʻike ʻia ka haʻawina ʻo LIMNPO4 ka maikaʻi o ka hiki ke kiʻekiʻe (4.1V), ʻaʻohe pollution, ke kumu kūʻai haʻahaʻa, ka mana kikoʻī nui (170mAh / g).

Eia naʻe, no ka mea, ʻoi aku ka liʻiliʻi o ka LIMNPO4 ma mua o ka LiFePO4 haʻahaʻa ionic conductivity, hoʻohana pinepine ʻia i ka hoʻololi maoli ʻana o Mn e hana i kahi hopena paʻa LiMn0.8Fe0.2PO4.

 ʻO nā hiʻohiʻona haʻahaʻa haʻahaʻa o ka lithium-ion battery negative electrode material i ʻoi aku ka koʻikoʻi e pili ana i ka mea electrode maikaʻi, a ʻoi aku ka koʻikoʻi o ka haʻahaʻa haʻahaʻa haʻahaʻa o ka lithium ion battery negative electrode material, ʻo ka nui o nā kumu ʻekolu.: Hoʻopili nui ʻia ka pākaukau i ka wā e hoʻopiʻi ʻia a hoʻokuʻu ʻia ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa kiʻekiʻe, a waiho ʻia ka lithium metala kino maikaʻi ʻole, a ʻo ka huahana hopena o ka metala lithium a me ka electrolyte maʻamau ʻaʻohe conductivity uila; Mai ke kihi thermodynamic, loaʻa i ka electrolyte ka nui o ka CO, CN kaawale, a hiki ke hana me ka mea electrode maikaʻi ʻole, a ʻoi aku ka maʻalahi o ke kiʻi SEI i hana ʻia i ka wela haʻahaʻa; He paʻakikī ka electrode kalapona i ka lithium lithium ma lalo o ka haʻahaʻa haʻahaʻa, a aia kahi hoʻopiʻi a hoʻokuʻu asymmetry ʻO ke aʻo ʻana i ka electrolyte electrolyte electrolyte electrolyte i loko o ka pā lithium ion he hopena koʻikoʻi i ka conductivity ionic a me nā waiwai hoʻokumu kiʻi SEI i ka pāhana haʻahaʻa haʻahaʻa haʻahaʻa. Hoʻoholo ʻia ʻo ka haʻahaʻa haʻahaʻa electrolyte he detro loa, aia ʻekolu mau hōʻailona nui: ionic conductivity, electrochemical windows, a me electrode reactivity.

ʻO ke kiʻekiʻe o kēia mau hōʻailona ʻekolu e hilinaʻi nui ʻia i kāna mea haku mele: solvent, electrolyte (lithium salt), additive. No laila, ʻo ke aʻo ʻana i ka hana haʻahaʻa haʻahaʻa o kēlā me kēia ʻāpana o ka electrolyte, he mea nui ia no ka hoʻomaopopo ʻana a me ka hoʻomaikaʻi ʻana i ka ikehu wela haʻahaʻa o ka pā. ʻO nā hiʻohiʻona haʻahaʻa haʻahaʻa haʻahaʻa electrolyte i hoʻohālikelike ʻia me ke kaulahao carbonate, paʻa ka cyclic carbonate structure, kiʻekiʻe, he kiʻekiʻe ka heheʻe a me ka viscosity.

Eia nō naʻe, ʻo ka polarity nui i lawe ʻia e ka annular structure i loaʻa pinepine i ka dielectric mau. EC solvent i ka nui dielectric mau, kiʻekiʻe ion conductivity, hemolele kiʻiʻoniʻoni hana hana, pono e pale aku i ka&39;ūheheʻe mole mai ka hookomo pu ana, no laila, he indispensable kūlana, no laila, ka hapanui haʻahaʻa haʻahaʻa electrolytic hoʻonā nenoai ua nui, a laila, hui pū Haʻahaʻa hoʻoheheʻe liʻiliʻi mole. ʻO ka paʻakai Lithium kahi mea nui o ka electrolyte.

ʻAʻole hiki i ka paʻakai lithium ke hoʻomaikaʻi wale i ka conductivity ionic o ka hopena i ka electrolyte, a hiki ke hoʻemi i ka mamao diffusion o Li + i ka hopena. Ma keʻano laulā, ʻoi aku ka nui o ka Li + i loko o ka hopena, ʻoi aku ka nui o ka conductivity ion. Eia nō naʻe, ʻaʻole i hoʻopili ʻia ka ʻike o ka lithium ion i loko o ka electrolyte, akā he parabolic.

ʻO kēia no ka mea ʻo ka hoʻopaʻa ʻana o ka lithium ion i loko o ka solvent e pili ana i ka hoʻoheheʻe ʻana o ka paʻakai lithium i loko o ka solvent a me ka ikaika o ka hui. ʻO ke aʻo ʻana i ka electrolyte haʻahaʻa haʻahaʻa koe wale nō ka pākaukau i haku ʻia i ka hana maoli, hiki i ka hana o ka pākaukau ke loaʻa i ka hopena nui i ka hana o ka pā. Kaʻina Hoʻomākaukau.

ʻO YaquB et al. E noiʻi e pili ana i ka ukana electrode a me ka mānoanoa o ka uhi ʻana ma ka hana haʻahaʻa wela o ka lini0.6co0.

2 mn0.2O2 / graphite pākaukau, ma ke ʻano o ka lākiō paʻa paʻa, ʻoi aku ka liʻiliʻi o ka ukana electrode, ʻoi aku ka lahilahi o ka uhi uhi, ʻoi aku ka maikaʻi o ka hana haʻahaʻa haʻahaʻa.  Kūlana hoʻopaʻa a hoʻokuʻu.

ʻO Petzl et al., ʻO ka hopena o ka haʻahaʻa haʻahaʻa haʻahaʻa a me ke ola pōʻaiapili, ʻike ʻia i ka wā i nui ai ka hohonu o ka hoʻokuʻu ʻana, nui ka pohō o ka mana, a hoʻohaʻahaʻa ʻia ke ola pōʻai. Nā kumu ʻē aʻe.

ʻO ka ʻili o ka electrode, ka aperture, ka electrode density, ka wettability o ka electrode a me ka electrolyte, a me nā mea like, e pili ana i ka hana haʻahaʻa haʻahaʻa o ka pā lithium ion. Eia kekahi, ʻaʻole hiki ke nānā ʻia ka hopena o nā hemahema i nā mea a me nā kaʻina hana i ka hana haʻahaʻa haʻahaʻa haʻahaʻa Hōʻuluʻulu manaʻo No ka hōʻoia ʻana i ka hana haʻahaʻa haʻahaʻa o ka pā lithium-ion, pono ʻoe e hana i kēia: Hana i kahi kiʻiʻoniʻoni SEI lahilahi a paʻa; E hōʻoia i ka loaʻa ʻana o ka diffusion coefficient nui o Li + i ka mea hana; Loaʻa i ka electrolyte kahi conductivity ionic kiʻekiʻe ma kahi wela haʻahaʻa.

 Eia hou, hiki i ke aʻo ʻana ke lawe i kahi ala ʻē aʻe i kekahi ʻano pākaukau lithium-ion - piha piha piha i ka lithium ion. Ke hoʻohālikelike ʻia i nā ʻona lithium-ion maʻamau, ʻo nā pākahi lithium ion solid-state āpau, ʻoi aku ka piha piha o nā ʻoniʻoni ʻoniʻoni lithium ion, e manaʻo ʻia e hoʻopau piha i ka pilikia attenuation hiki a me nā pilikia palekana pōʻai i hoʻohana ʻia ma lalo o nā haʻahaʻa haʻahaʻa.