Me pehea te whakapai ake i te mahi pākahiko katote lithium? Me pehea te kite me pehea te korero o te whakamatautau!

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Umhlinzeki Wesiteshi Samandla Esiphathekayo

Ko te pākahiko lithium katote me te lithium iron phosphate he haumaru nui, ko te painga o te roa o te huringa ora, ko te pākahiko auraki o te motuka hiko. Ka whakapotohia e te pākahiko tona oranga mo te wa roa, ka tirotirohia te ngaronga kaha o te pākahiko lithium katote hiko i roto i nga tikanga rokiroki pāmahana teitei, e awhina ana ki te mohio ki te ahua kore o te pākahiko lithium-ion, me te whakapai ake i te mahi o te pākahiko. Ahakoa te nui o nga tuhinga kua akohia e te mate o te pākahiko katote lithium, ko te mea taketake e kiia ana ko te tātari whakaheke electrolyte, te tipu o te membrane SEI me te polarization i puta mai i te pākahiko, engari he iti te rangahau o naianei ki te paatene (Hem) He iti ake te rangahau mo te korenga o te pākahiko lithium-ion arumoni (pahiko katoa).

Kei te whakamahi a Ningde Times CATL i tana tauhokohoko i runga i te pākahiko lithium-ion hei tauira, he tirotiro i tana takenga mai i te mana, 60 ¡ã C ngaronga kaha rokiroki. Ma te tohu-a-tinana me te arotakenga mahi hiko, he tino pai te tirotiro i te tikanga o te whakakore i te kaha o te pākahiko mai i te pākahiko me te taumata poupou! 1. Whakamātauhia te tukanga whakamatautau ma te whakamahi i te CATL kua tukatukahia te kaha ingoa o te pākahiko lithium-ion 86AH.

He rauemi cathode te pākahiko, he mea anode te kauwhata, ma te whakamahi i te diaphragm polyethylene (PE) me te roopu warowaiha LiPF6 electrolyte. Tīpakohia nga pākahiko 20 e tata ana ki te puranga kotahi me te mahi hiko hei rokiroki, kitea te mahi hiko o te pākahiko. 100% SOC pākahiko 60 ¡ã C kei roto i te perehi i waenganui i te 2.

50 ki te 3.65V, he tukunga o te 0.5C te whakanui - te huringa utu.

Katahi ka pupuri tonu ki te 60 ¡ã C mo te 60 ¡ã C. Ko taua mea tukurua, tuhi i te tukanga attenuation kaha o te pākahiko. I roto i ia kitenga kaha, ka kitea te parenga o roto DC (DCR) o te pākahiko 5C30S.

Tangohia nga wa rokiroki rereke me te ahua kua tukuna (100% DOD), wetewete. Whakamahia te matawai irahiko karu irahiko ki te mataki i te ahua o te polar, whakamahia te waahanga mata motuhake o te mata atu i te pirau o te mata. I roto i te pouaka karapu, ka hirihia te pepa hiko ki te riipene whakawhiti, ka titohia nga rauemi hiko ma te whakamahi i te taputapu whakahiato hihi X.

Ko te waahanga polar i muri i te whakakorenga o te pākahiko ko te hiko mahi, ko te pepa lithium ko te hiko porotiti, ka whakauruhia ki roto i te pākahiko CR2032, me nga taonga hiko o te yin me te pereti iti. Hikohiko impedance hihinga o te peera pākahiko ki te teihana mahi hiko. Ko te ihirangi huānga o te pepa hiko e whakamahi ana i te irahiko hono i roto i te iri hiko (ICP-OES).

2. Ko te mutunga, ko te matapaki 2.1 Ko te pirau o te pākahiko ka tukuna, ka tukuna ma te 0.

02C pakaru. Kei te Fig. 1 (c), he katote lithium ka mau ki roto i te maha o nga papaaho na nga katote lithium i roto i te pihinga ngaohiko pākahiko, e tohu ana ko te 0.

Ko te whakanui 02c kua whakauruhia mo te katote lithium. Ko te whakangā o nga hanganga kauwhata i roto i te wa ka waiho he wa ka taea te whakakore i nga paanga o te polarization i runga i nga huringa. Ka whakatauritea ki te 0.

5C te whakanui, he 0.8% anake (90.7% vs.

91.4%) me 1.4% (85.

8% vs.87.3%).

Na reira, ko te ngoikore o te kaha o te pākahiko i puta mai i te wa roa o te rokiroki o te pāmahana teitei ko te whakaheke kaha e kore e taea te huri. I tua atu, FIG. 1 (a) e whakaatu ana kua piki ake te kaha o te kaha o te pākahiko ki te wa rokiroki, e whakaatu ana hoki ko te polarization o roto o te pākahiko ehara i te mea taketake nui na te koretake o te kaha o te pākahiko rokiroki maramataka.

2.2 Mīhini whakakorikori te kaha o te pākahiko Ka whakahekehia ki te whakaheke i te kaha o te pākahiko i nga puna pakiaka, ka tukuna te pākahiko rokiroki teitei ki te 100% SOC, ka tukuna ranei ki te 100% DOD i muri i te whakanui 1C. Waihangatia te pou kua wetewetehia ki te tirotiro i nga paanga o te rokiroki teitei o te pāmahana ki runga i te hanganga, te hanganga o te huānga me nga ahuatanga matū hiko o te yin me te mea ngoikore.

2.2.1 LIFEPO4 i roto i te whakahohonutanga o te muku hohonu hohonu ka puta tata rawa ki te mapi FEPO4XRD, i te mea ko te tuāwhiorangi LIFEPO4XRD e tino tata ana ki te awhi Lifepo4XRD i te LIFEPO4 o te hohonu.

I te wa ano, he waahi lithium me te waahi lithium i roto i te pou o te LiFePO4 kua tino whakakorehia, a ka piki ake te ihirangi lithium-waahi me te wa rokiroki, e tohu ana ko te maha o nga katote lithium e kaha ana ki te whakauru i te FEPO4 lattice he redu.