Ukusetshenziswa kwe-CMC Binder kumabhethri

Emkhakheni wobuchwepheshe bebhethri, ukukhetha izinto zokubopha kudlala indima ebalulekile ekunqumeni ukusebenza, ukuzinza, kanye nobude besikhathi sebhethri.I-Carboxymethyl cellulose (CMC), i-polymer encibilika emanzini etholakala ku-cellulose, ivele njenge-binder ethembisayo ngenxa yezakhiwo zayo eziyingqayizivele njengokuqina okuphezulu kokunamathela, ikhono elihle lokwenza ifilimu, kanye nokuhambisana nendawo ezungezile.

Isidingo esikhulayo samabhethri asebenza kahle kakhulu ezimbonini ezahlukahlukene, okuhlanganisa izimoto, ama-elekthronikhi, kanye namandla avuselelekayo, sikhuthaze imizamo eminingi yocwaningo yokuthuthukisa izinto ezintsha zebhethri kanye nobuchwepheshe. Phakathi kwezingxenye ezibalulekile zebhethri, i-binder idlala indima ebalulekile ekuvimbeleni izinto ezisebenzayo ukuba zingene kumqoqi wamanje, ukuqinisekisa ukuthi imijikelezo yokushaja nokukhipha isebenza kahle. Ama-binder endabuko njenge-polyvinylidene fluoride (PVDF) anemikhawulo maqondana nomthelela wemvelo, izakhiwo zemishini, kanye nokuhambisana namakhemikhali ebhethri esizukulwane esilandelayo. I-Carboxymethyl cellulose (CMC), enezakhiwo zayo ezihlukile, ivele njengenye into ethembisayo yokuhlanganisa ukuze kuthuthukiswe ukusebenza kwebhethri kanye nokusimama.

1. Izakhiwo ze-Carboxymethyl Cellulose (CMC):
I-CMC iyi-derivative encibilikayo emanzini ye-cellulose, i-polymer yemvelo etholakala ezindongeni zamaseli ezitshalo. Ngokushintsha kwamakhemikhali, amaqembu e-carboxymethyl (-CH2COOH) afakwa emgogodleni we-cellulose, okuholela ekuncibilikeni okuthuthukisiwe kanye nezakhiwo zokusebenza ezithuthukisiwe. Ezinye zezakhiwo ezibalulekile ze-CMC ezihlobene nokusetshenziswa kwayo ku

Amabhethri (1) afaka:

Amandla okunamathela aphezulu: I-CMC ikhombisa izakhiwo eziqinile zokunamathela, okwenza ikwazi ukubopha kahle izinto ezisebenzayo endaweni yokuqoqa yamanje, ngaleyo ndlela ithuthukise ukuzinza kwe-electrode.
Ikhono elihle lokwenza ifilimu: I-CMC ingakha amafilimu afanayo naqinile ezindaweni ze-electrode, okwenza kube lula ukugoqwa kwezinto ezisebenzayo futhi kuthuthukiswe ukusebenzisana kwe-electrode-electrolyte.
Ukuhambisana kwemvelo: Njenge-polymer ebolayo futhi engenaboli etholakala emithonjeni evuselelekayo, i-CMC inikeza izinzuzo zemvelo ngaphezu kwe-synthetic binders efana ne-PVDF.

2. Ukusetshenziswa kwe-CMC Binder kumabhethri:

(1) Ukwakhiwa kwe-Electrode:

I-CMC ivame ukusetshenziswa njenge-binder ekwakhiweni kwama-electrode ezinhlobonhlobo ze-chemistry zamabhethri, okuhlanganisa amabhethri e-lithium-ion (LIBs), amabhethri e-sodium-ion (SIBs), kanye nama-supercapacitor.
Kuma-LIB, i-CMC ithuthukisa ukunamathelana phakathi kwezinto ezisebenzayo (isb., i-lithium cobalt oxide, i-graphite) kanye nomqoqi wamanje (isb., i-copper foil), okuholela ekuthuthukisweni kobuqotho be-electrode kanye nokuncipha kwe-delanitation ngesikhathi sokujikeleza.
Ngokufanayo, kuma-SIB, ama-electrode asekelwe ku-CMC abonisa ukuzinza okuthuthukisiwe kanye nokusebenza kokujikeleza uma kuqhathaniswa nama-electrode anezihlanganisi ezivamile.
Ikhono lokwenza ifilimu le-I-CMCkuqinisekisa ukumbozwa okufanayo kwezinto ezisebenzayo kumqoqi wamanje, kunciphisa ukugoba kwe-electrode kanye nokuthuthukisa ukuhamba kwe-ion.

(2) Ukuthuthukiswa Kokuqhutshwa Komoya:

Nakuba i-CMC ngokwayo ingenawo amandla okuqhuba ugesi, ukufakwa kwayo ekwakhiweni kwama-electrode kungathuthukisa ukuguquguquka kukagesi okuphelele kwe-electrode.
Amasu afana nokwengeza izithasiselo eziqhubayo (isb., i-carbon black, i-graphene) kanye ne-CMC asetshenziswe ukunciphisa i-impedance ehlotshaniswa nama-electrode asekelwe ku-CMC.
Izinhlelo ze-hybrid binder ezihlanganisa i-CMC nama-polymer aqhubayo noma ama-carbon nanomaterial zibonise imiphumela ethembisayo ekuthuthukiseni ukuhanjiswa kwe-electrode ngaphandle kokulahlekelwa yizakhiwo zemishini.

3. Ukuzinza kwe-Electrode kanye nokusebenza ngebhayisikili:

I-CMC idlala indima ebalulekile ekugcineni ukuzinza kwe-electrode nokuvimbela ukuhlukana kwezinto ezisebenzayo noma ukuhlangana ngesikhathi sokujikeleza.
Ukuguquguquka kanye nokunamathela okuqinile okunikezwa yi-CMC kunegalelo ekuqineni komshini kwama-electrode, ikakhulukazi ngaphansi kwezimo zokucindezeleka okuguquguqukayo ngesikhathi sokujikeleza kokushaja nokukhipha i-charge.
Imvelo ye-CMC ethanda amanzi iyasiza ekugcineni i-electrolyte ngaphakathi kwesakhiwo se-electrode, iqinisekisa ukuthuthwa kwama-ion okuqhubekayo kanye nokunciphisa ukuphelelwa amandla kokujikeleza isikhathi eside.

4. Izinselele kanye Nemibono Yesikhathi Esizayo:

Nakuba ukusetshenziswa kwe-CMC binder kumabhethri kunikeza izinzuzo ezibalulekile, izinselele eziningana kanye namathuba okuthuthukisa

(1) zikhona:

Ukuthuthukiswa Kokuqhuba Okuthuthukisiwe: Ucwaningo olwengeziwe luyadingeka ukuze kuthuthukiswe ukwenziwa kahle kwama-electrode asekelwe ku-CMC, kungaba ngokusebenzisa izindlela ezintsha zokubopha noma inhlanganisela yokusebenzisana enezithasiselo zokuqhuba.
Ukuhambisana ne-High-Energy Che

i-mistries: Ukusetshenziswa kwe-CMC kuma-chemistry ebhethri asafufusa ane-density ephezulu yamandla, njenge-lithium-sulfur kanye namabhethri e-lithium-air, kudinga ukucatshangelwa ngokucophelela ukuzinza kwayo kanye nokusebenza kwayo kwe-electrochemical.

(2) Ukusabalala kanye nokusebenza kahle kwezindleko:
Ukukhiqizwa kwama-electrode asekelwe ku-CMC ngokwezinga lezimboni kumele kube nenzuzo ngokwezomnotho, kudingeke izindlela zokwenziwa ezingabizi kakhulu kanye nezinqubo zokukhiqiza ezikwaziyo ukwandiswa.

(3) Ukusimama Kwemvelo:
Nakuba i-CMC inikeza izinzuzo zemvelo ngaphezu kwezinto ezivamile zokubopha, imizamo yokuthuthukisa ukuzinza okwengeziwe, njengokusebenzisa imithombo ye-cellulose ephinde yasetshenziswa noma ukuthuthukisa ama-electrolyte abolayo, iyaqinisekiswa.

I-Carboxymethyl cellulose (CMC)imelela into yokubopha eguquguqukayo futhi eqhubekayo enamandla amakhulu okuthuthukisa ubuchwepheshe bebhethri. Inhlanganisela yayo eyingqayizivele yamandla okunamathela, ikhono lokwenza ifilimu, kanye nokuhambisana kwemvelo kwenza kube ukukhetha okukhangayo kokuthuthukisa ukusebenza kwe-electrode kanye nokuzinza kuzo zonke izinhlobo zamakhemikhali ebhethri. Imizamo yocwaningo oluqhubekayo kanye nentuthuko ehlose ukwenza ngcono ukwakheka kwe-electrode okusekelwe ku-CMC, ukuthuthukisa ukuhanjiswa kwamandla, kanye nokubhekana nezinselele zokukhuliswa kuzovula indlela yokwamukelwa kabanzi kwe-CMC kumabhethri esizukulwane esilandelayo, okufaka isandla ekuthuthukisweni kobuchwepheshe bamandla ahlanzekile.