Ukusetshenziswa kwe-CMC Binder kumabhethri

Emkhakheni wobuchwepheshe bebhethri, ukukhetha kwezinto ezihlanganisayo kudlala indima ebalulekile ekunqumeni ukusebenza, ukuqina, nempilo ende yebhethri.I-Carboxymethyl cellulose (CMC), i-polymer encibilika emanzini etholakala ku-cellulose, iye yavela njengesibophezelo esithembisayo ngenxa yezakhiwo zayo ezingavamile ezifana namandla okunamathela okuphezulu, ikhono elihle lokwenza ifilimu, nokuhambisana kwendawo ezungezile.

Isidingo esikhulayo samabhethri asebenza kahle kakhulu kuzo zonke izimboni ezihlukahlukene, okuhlanganisa ezezimoto, eze-elekthronikhi, namandla avuselelekayo, sikhuthaze imizamo emikhulu yocwaningo yokuthuthukisa izinto ezintsha zebhethri nobuchwepheshe. Phakathi kwezingxenye ezibalulekile zebhethri, isibopho sidlala indima ebalulekile ekuvimbeni izinto ezisebenzayo kumqoqi wamanje, ukuqinisekisa ukushaja okusebenzayo kanye nemijikelezo yokukhipha. Izibophezelo zendabuko ezifana ne-polyvinylidene fluoride (PVDF) zinemikhawulo ngokomthelela wendawo, izakhiwo zokukhanda, nokuhambisana namakhemistri ebhethri esizukulwane esilandelayo. I-Carboxymethyl cellulose (CMC), enezici zayo ezihlukile, ivele njengenye into ethembisayo yokuhlanganisa ukuze kuthuthukiswe ukusebenza kwebhethri nokusimama.

1.Izakhiwo zeCarboxymethyl Cellulose (CMC):
I-CMC iphuma ku-cellulose encibilika emanzini, i-polymer yemvelo eningi ezindongeni zamaseli ezitshalo. Ngokuguqulwa kwamakhemikhali, amaqembu e-carboxymethyl (-CH2COOH) angeniswa kumgogodla we-cellulose, okuholela ekuncibilikeni okuthuthukisiwe kanye nezakhiwo ezithuthukisiwe zokusebenza. Ezinye izakhiwo ezibalulekile ze-CMC ezihambisana nesicelo sayo ku

(1) amabhethri afaka:

Amandla okunamathela aphezulu: I-CMC ibonisa izakhiwo eziqinile zokunamathela, eziyenza ikwazi ukuhlanganisa ngempumelelo izinto ezisebenzayo endaweni yamanje yokuqoqwa, ngaleyo ndlela ithuthukise ukuzinza kwe-electrode.
Ikhono elihle lokwenza ifilimu: I-CMC ingakha amafilimu afanayo naminyene ezindaweni zama-electrode, yenze kube lula ukuhlanganisa izinto ezisebenzayo kanye nokuthuthukisa ukusebenzisana kwe-electrode-electrolyte.
Ukuhambisana kwemvelo: Njengepolymer ebolayo nengenabo ubuthi etholakala emithonjeni evuselelekayo, i-CMC inikeza izinzuzo zemvelo ngaphezu kwezibophezelo zokwenziwa ezifana ne-PVDF.

2.Ukusetshenziswa kwe-CMC Binder kumabhethri:

(1) Ukwenziwa kwe-Electrode:

I-CMC ivamise ukusetshenziswa njengesibophezelo ekwenziweni kwama-electrodes kumakhemistri amabhethri ahlukahlukene, okuhlanganisa amabhethri e-lithium-ion (LIBs), amabhethri e-sodium-ion (SIBs), nama-supercapacitor.
Kuma-LIB, i-CMC ithuthukisa ukunamathela phakathi kwezinto ezisebenzayo (isb, i-lithium cobalt oxide, i-graphite) kanye nomqoqi wamanje (isb., ucwecwe lwethusi), okuholela ekuthuthukisweni kobuqotho be-electrode kanye nokuncipha kwe-delamination ngesikhathi sokuhamba ngebhayisikili.
Ngokufanayo, kuma-SIB, ama-electrode asekelwe ku-CMC abonisa ukuzinza okuthuthukisiwe nokusebenza kwamabhayisikili uma kuqhathaniswa nama-electrode anezibophezelo ezivamile.
Ikhono lokwenza ifilimu likaI-CMCiqinisekisa ukumbozwa okufanayo kwezinto ezisebenzayo kumqoqi wamanje, ukunciphisa i-electrode porosity nokuthuthukisa i-ion transport kinetics.

(2) Ukuthuthukiswa Kokuziphatha:

Nakuba i-CMC ngokwayo ingaqhubeki, ukufakwa kwayo ekwakhekeni kwama-electrode kungathuthukisa ukuqhutshwa kukagesi kukonke kwe-electrode.
Amasu afana nokwengezwa kwezithasiselo ezisebenzayo (isb., i-carbon black, i-graphene) eduze kwe-CMC asetshenzisiwe ukuze kuncishiswe ukuthinta okuhlobene nama-electrode asekelwe ku-CMC.
Amasistimu wokuhlanganisa ama-Hybrid ahlanganisa i-CMC nama-polymers aqhubayo noma i-carbon nanomaterials abonise imiphumela ethembisayo ekuthuthukiseni ukuqhutshwa kwe-electrode ngaphandle kokudela izakhiwo zokukhanda.

3.Ukuzinza kwe-Electrode kanye Nokusebenza Kokuhamba Ngebhayisikili:

I-CMC idlala indima ebalulekile ekugcineni ukuqina kwama-electrode kanye nokuvimbela ukuhlangana kwezinto ezisebenzayo noma ukuhlangana ngesikhathi sokuhamba ngebhayisikili.
Ukuvumelana nezimo nokunamathela okuqinile okuhlinzekwa yi-CMC kufaka isandla ekuthembekeni kwemishini kwama-electrode, ikakhulukazi ngaphansi kwezimo zengcindezi eguquguqukayo phakathi nemijikelezo yokushaja.
imvelo ye-hydrophilic ye-CMC isiza ekugcineni i-electrolyte ngaphakathi kwesakhiwo se-electrode, iqinisekisa ukuthutha kwe-ion okuqhubekayo kanye nokunciphisa ukufiphala kwamandla phezu kokuhamba ngebhayisikili isikhathi eside.

4.Izinselele kanye Nemibono Yekusasa:

Ngenkathi ukusetshenziswa kwesibophezelo se-CMC kumabhethri kunikeza izinzuzo ezibalulekile, izinselele ezimbalwa namathuba okwenza ngcono

(1) ikhona:

Ukusebenza Okuthuthukisiwe: Ucwaningo olwengeziwe luyadingeka ukuze kuthuthukiswe ukusebenza kahle kwama-electrode asuselwa ku-CMC, noma ngokusebenzisa ukwakheka kokuhlanganisa okusha okuhlanganisayo noma inhlanganisela ye-synergistic enezithasiselo ezisebenzayo.
Ukuhambisana ne-High-Energy Che

ama-mistries: Ukusetshenziswa kwe-CMC kumakhemistri amabhethri asafufusa anokuminyana okukhulu kwamandla, njengamabhethri e-lithium-sulphur namabhethri e-lithium-air, kudinga ukucatshangelwa ngokucophelela kokuzinza nokusebenza kwe-electrochemical.

(2) Ukukala nokusebenza kwezindleko:
Ukukhiqizwa kwezimboni zama-electrode asekelwe ku-CMC kufanele kusebenze kahle kwezomnotho, kudinge imizila yokuhlanganiswa engabizi kanye nezinqubo zokukhiqiza ezikhulayo.

(3) Ukusimama Kwemvelo:
Nakuba i-CMC inikeza izinzuzo zemvelo ngaphezu kwezibophezelo ezivamile, imizamo yokuthuthukisa ukusimama ngokuqhubekayo, njengokusebenzisa imithombo ye-cellulose egaywe kabusha noma ukuthuthukisa ama-electrolyte abolayo, iqinisekisiwe.

I-Carboxymethyl cellulose (CMC)imele okokusebenza okuhlanganisayo okuguquguqukayo nokusimeme okunamandla amakhulu okuthuthukisa ubuchwepheshe bebhethri. Inhlanganisela yayo eyingqayizivele yamandla okunamathela, ikhono lokwenza ifilimu, nokuhambisana kwendawo ezungezile ikwenza kube ukukhetha okukhangayo kokuthuthukisa ukusebenza kwama-electrode nokuzinza kulo lonke uhla lwamakhemikhali ebhethri. Imizamo eqhubekayo yocwaningo nentuthuko ehloselwe ukwenza ngcono ukwakhiwa kwama-electrode asuselwa ku-CMC, ukuthuthukisa ukusebenza kahle, kanye nokubhekana nezinselele zokukhula kuzovula indlela yokwamukelwa okusabalele kwe-CMC kumabhethri esizukulwane esilandelayo, kube nesandla ekuthuthukisweni kobuchwepheshe bamandla ahlanzekile.