He maha ngā tohu hangarau o ngā rauemi anode karāhe, ā, he uaua ki te whakaaro, ko te nuinga o ēnei ko te horahanga mata motuhake, te tohatoha rahi matūriki, te kiato o te tap, te kiato whakakīkī, te kiato pono, te kaha motuhake o te utu me te tukunga tuatahi, te whai huatanga tuatahi, me ētahi atu. Hei tāpiri, kei reira ngā tohu hikohiko pēnei i te mahi huringa, te mahi tere, te pupuhi, me ētahi atu. Nō reira, he aha ngā tohu mahi o ngā rauemi anode karāhe? Ko te ihirangi e whai ake nei ka whakaatuhia ki a koe e HCMilling (Guilin Hongcheng), te kaihanga ongā rauemi anode mira huri.

01 horahanga mata motuhake

E pā ana ki te horahanga mata o tētahi mea mō ia wae papatipu. Ka iti ake te matūriki, ka nui ake te horahanga mata motuhake.

He nui ake ngā hongere me ngā ara poto ake mō te hekenga o te ion lithium i roto i te hiko kino me ngā matūriki iti me te horahanga mata motuhake teitei, ā, he pai ake te tere o te mahi. Heoi, nā te nui o te horahanga whakapā ki te irahiko, he nui hoki te horahanga mō te hanga i te kiriata SEI, ā, ka iti iho te whai huatanga tuatahi. Ko ngā matūriki nui ake, i tētahi atu taha, he painga nui ake te kiato whakakī.

Ko te horahanga mata motuhake o ngā rauemi anode graphite he iti iho i te 5m2/g.

02 Te tohatoha rahi o te matūriki

Ko te awe o te rahi matūriki o te rauemi anode graphite ki tōna mahi hikohiko, ko te mea ka pā tika te rahi matūriki o te rauemi anode ki te mātotoru o te rauemi me te horahanga mata motuhake o te rauemi.

Ka pā tika te rahi o te mātotoru o te tap ki te mātotoru o te kaha rōrahi o te rauemi, ā, ko te tohatoha rahi matūriki tika anake ka taea te whakanui ake i te mahi a te rauemi.

03 Te Matotoru o te Pātene

Ko te mātotoru o te pūwero te papatipu mō ia rōrahi inehia e te wiri e puta ai te paura i roto i te āhua tākai piripono. He tohu nui tēnei hei ine i te rauemi hohe. He iti te rōrahi o te pākahiko lithium-ion. Mena he nui te mātotoru o te pūwero, he nui te papatipu o te rauemi hohe mō ia rōrahi, ā, he nui te kaha o te rōrahi.

04 Te Matotoru Whakakīkī

Ko te mātotoru whakakīkī e pā ana ki te wahi pou, e pā ana ki te mātotoru i muri i te hurihanga i muri i te hanganga o te rauemi hohe hiko kino me te mea here ki roto i te wahi pou, ko te mātotoru whakakīkī = te mātotoru horahanga / (te matotoru o te wahi pou i muri i te hurihanga, tangohia te matotoru o te pepa parahi).

He hononga tata te mātotoru whakakīkī ki te kaha motuhake o te pepa, te pai o te mahi, te ātete ā-roto me te mahi a te huringa pākahiko.

He pānga tō ngā āhuatanga e pā ana ki te mātotoru o te whakakikoruatanga: te rahi o te matūriki, te tohatoha me te āhua.

05 Te Matotoru Tuturu

Ko te taumaha o te mea totoka mō ia rōrahi o tētahi rauemi i roto i te āhua tino kikī (haunga ngā āputa o roto).

I te mea ka inehia te mātotoru tūturu i roto i te āhua kua whakakīia, ka teitei ake i te mātotoru kua patohia. I te nuinga o te wā, ko te mātotoru tūturu > te mātotoru kua whakakīia > te mātotoru kua patohia.

06 Ko te kaha tuatahi mō te utu me te tuku

He kaha kore e taea te huri i te rauemi anode graphite i te huringa utu-tukunga tuatahi. I te wā o te tukanga utu tuatahi o te pākahiko lithium-ion, ka whakauruhia te mata o te rauemi anode ki ngā katote lithium, ā, ka whakauruhia ngā ngota whakarewa i roto i te electrolyte, ā, ka pirau te mata o te rauemi anode hei hanga i te SEI. Kiriata whakangāwari. I muri i te kapi katoa o te mata o te irahiko kino e te kiriata SEI, kāore i taea e ngā ngota whakarewa te whakauru, ā, ka mutu te tauhohenga. Ka pau i te whakaputanga o te kiriata SEI tetahi wāhanga o ngā katote lithium, ā, kāore e taea te tango i tēnei wāhanga o ngā katote lithium mai i te mata o te irahiko kino i te wā o te tukanga tukunga, ka puta te ngaronga kaha kore e taea te huri, ka whakaiti i te kaha motuhake o te tukunga tuatahi.

07 Te Whai Huatanga Tuatahi o te Coulomb

Ko tētahi tohu nui mō te aromatawai i te mahi a tētahi rauemi anode ko tōna whai huatanga tuatahi o te utu-tukunga, e mōhiotia ana ko te whai huatanga Coulomb tuatahi. Mō te wā tuatahi, ka whakatau tika te whai huatanga Coulombic i te mahi a te rauemi hiko.

I te mea ko te nuinga o te wā ka hangaia te kiriata SEI ki runga i te mata o te rauemi irahiko, ka pā tika te horahanga mata motuhake o te rauemi irahiko ki te horahanga hanganga o te kiriata SEI. Ka nui ake te horahanga mata motuhake, ka nui ake te horahanga whakapā ki te irahiko, ā, ka nui ake hoki te horahanga hei hanga i te kiriata SEI.

E whakaponohia whānuitia ana he pai te hanganga o tētahi kiriata SEI pumau mō te utu me te tukunga o te pākahiko, ā, ko te kiriata SEI pumau kāore e pai mō te tauhohenga, ka pau tonu te electrolyte, ka matotoru ake te matotoru o te kiriata SEI, ā, ka whakanui ake i te ātete ā-roto.

08 Te mahi a te pahikara

Ko te mahi huringa o te pākahiko e pā ana ki te maha o ngā utu me ngā tukunga ka pā ki te pākahiko i raro i tētahi tikanga utu me te tukunga ina heke te kaha o te pākahiko ki tētahi uara kua tohua. Mō te mahi huringa, ka ārai te kiriata SEI i te horapa o ngā katote lithium ki tētahi taumata. I te piki haere o te maha o ngā huringa, ka haere tonu te kiriata SEI ki te taka, ki te tihore, ka whakatakotoranga ki te mata o te irahiko kino, ka hua ake he pikinga haere o te ātete ā-roto o te irahiko kino, ka puta te kohikohi wera me te ngaronga o te kaha.

09 Whakawhanuitanga

He hononga pai kei waenganui i te whānui me te roa o te huringa. I muri i te whānui o te irahiko kino, tuatahi, ka whakapōturitia te matua takai, ka hanga he kapiti moroiti ngā matūriki irahiko kino, ka pakaru te kiriata SEI, ka whakarite anō, ka pau te irahiko, ā, ka heke te mahi o te huringa; tuarua, ka pēhia te diaphragm. He tino kino te pēhanga, inā koa te putanga o te diaphragm i te taha matau o te taringa pou, ā, he ngāwari ki te whakaputa i te porowhita poto moroiti, i te maturuturunga rānei o te lithium me te ahunga whakamua o te huringa utu-tuku.

Mō te whānui tonu, ka whakaurua ngā katote lithium ki roto i te mokowā i waenga i ngā paparanga karāpeti i te wā o te tukanga whakauru karāpeti, ka hua ake he whānui o te mokowā i waenga i ngā paparanga me te pikinga o te rōrahi. Kāore e taea te whakahuri i tēnei wāhanga whānui. Ko te nui o te whānui e pā ana ki te nui o te aronga o te irahiko kino, ko te tohu aronga = I004/I110, ka taea te tatau mai i ngā raraunga XRD. Ko te rauemi karāpeti anisotropic ka pāngia e te whānui whatunga i te ahunga kotahi (te ahunga tuaka-C o te karaihe karāpeti) i te wā o te tukanga whakauru karāpeti lithium, ka hua ake he whānui nui ake o te rōrahi o te pākahiko.

10Whakatauria te mahi

He kaha te ahunga o te horapa o ngā katote lithium i roto i te rauemi anode graphite, arā, ka taea anake te whakauru poutū ki te mata pito o te tuaka-C o te karaihe graphite. He pai ake te tere o ngā rauemi anode he iti ngā matūriki me te horahanga mata motuhake teitei. Hei tāpiri, ka pāngia hoki te tere o te mahi e te ātete o te mata o te irahiko (nā te kiriata SEI) me te kawe hiko.

Pērā i te roa o te huringa me te whānui, he maha ngā hongere kawe ira lithium o te irahiko kino isotropic, e whakaoti ana i ngā raruraru o te iti o ngā tomokanga me ngā tere horapa iti i roto i te hanganga anisotropic. Ko te nuinga o ngā rauemi e whakamahi ana i ngā hangarau pēnei i te granulation me te paninga hei whakapai ake i tā rātou mahi tere.

He kaihanga a HCMilling (Guilin Hongcheng) o te mira huri rauemi anode.Raupapa HLMXngā rauemi anode tino pai-mira poutū pai, HCHngā rauemi anode mira tino paime ētahi atu mira huri karāpeti i hangaia e mātou kua whakamahia whānuitia ki te hanga rauemi karāpeti karāpeti. Mena he hiahia e pā ana ki a koe, whakapā mai ki a mātou mō ngā taipitopito o ngā taputapu me te whakarato mai i ngā mōhiohio e whai ake nei:

Ingoa rauemi mata

Te pai o te hua (mata/μm)

kaha (t/h)