CMC ea boemo ba betri

Battery-grade carboxymethyl cellulose (CMC) ke mofuta o ikhethileng oa CMC o sebelisoang e le setlamo le setenya ha ho etsoa libeteri tsa lithium-ion (LIBs). Li-LIB ke libeteri tse nchafatsoang tse sebelisoang hangata lisebelisoa tsa elektroniki tse nkehang, likoloi tsa motlakase le lits'ebetso tsa polokelo ea matla ka lebaka la matla a tsona a phahameng le bophelo ba nako e telele. CMC ea boemo ba betri e bapala karolo ea bohlokoa ts'ebetsong ea tlhahiso ea li-electrode tsa LIB, haholo tlhahisong ea li-electrode bakeng sa cathode le anode.

Mesebetsi le Matlotlo a Battery-Grade CMC:

1. Binder: Battery-grade CMC e sebetsa e le setlamo se thusang ho tšoara lisebelisoa tsa electrode tse sebetsang (tse kang lithium cobalt oxide bakeng sa cathodes le graphite bakeng sa anode) hammoho le ho li khomarela ho substrate ea hona joale ea mokelli (hangata foil ea aluminium bakeng sa cathodes le foil ea koporo bakeng sa anodes. ). Sena se tiisa motlakase o motle oa motlakase le botsitso ba mochine oa electrode.
2. Thickening Agent: Battery-grade CMC e boetse e sebetsa e le ntho e tenya ka har'a tlhahiso ea slurry ea electrode. E thusa ho laola li-viscosity le thepa ea rheological ea slurry, e lumellang ho roala ka mokhoa o ts'oanang le ho behoa ha lisebelisoa tsa electrode holim'a mokelli oa hona joale. Sena se tiisa botenya le botenya ba li-electrode tse sa fetoheng, tse bohlokoa bakeng sa ho fihlela tšebetso e nepahetseng ea betri.
3. Ionic Conductivity: Battery-grade CMC e ka fetoloa kapa ea etsoa ka mokhoa o khethehileng ho matlafatsa tsamaiso ea eona ea ionic ka har'a betri ea electrolyte. Sena se ka ntlafatsa ts'ebetso e akaretsang ea electrochemical le katleho ea betri ea lithium-ion.
4. Electrochemical Stability: Battery-grade CMC e etselitsoe ho boloka botšepehi ba eona ba sebopeho le botsitso ba electrochemical nakong ea bophelo ba betri, esita le tlas'a maemo a thata a ts'ebetso a kang mocheso o phahameng le litekanyetso tsa libaesekele. Sena se tiisa ho ts'epahala le polokeho ea nako e telele ea betri.

Mokhoa oa Tlhahiso:

CMC ea boemo ba betri hangata e hlahisoa ka phetoho ea lik'hemik'hale ea cellulose, polysaccharide ea tlhaho e nkiloeng ho likhoele tsa semela. Lihlopha tsa carboxymethyl (-CH2COOH) li hlahisoa mokokotlong oa selulose ka letoto la karabelo ea lik'hemik'hale, e leng se hlahisang sebopeho sa carboxymethyl cellulose. Tekanyo ea sebaka sa carboxymethyl le boima ba molek'hule ea CMC e ka hlophisoa ho fihlela litlhoko tse ikhethileng tsa lits'ebetso tsa betri tsa lithium-ion.

Lisebelisoa:

CMC ea boemo ba betri e sebelisoa haholo ha ho etsoa li-electrode bakeng sa libeteri tsa lithium-ion, ho kenyeletsoa tlhophiso ea lisele tsa cylindrical le pouch cell. E kenyelelitsoe ka har'a tlhahiso ea slurry ea electrode hammoho le likarolo tse ling tse kang lisebelisoa tse sebetsang tsa electrode, li-additives conductive, le solvents. Joale seretse sa eleketrode se apesoa holim'a substrate ea hona joale ea pokello, e omisitsoe, ebe e bokelloa ka seleng ea ho qetela ea betri.

Melemo:

1. Ntlafatso ea Ts'ebetso ea Electrode: CMC ea boemo ba betri e thusa ho ntlafatsa ts'ebetso ea electrochemical, botsitso ba libaesekele, le bokhoni ba sekhahla sa libeteri tsa lithium-ion ka ho netefatsa hore ho na le li-electrode tse sa tšoaneng le ho khomarela ka matla pakeng tsa lisebelisoa tse sebetsang le ba bokellang hona joale.
2. Tšireletso e Ntlafetseng le ho Tšepahala: Tšebeliso ea CMC ea boleng bo phahameng ba betri e nang le thepa e lokiselitsoeng e kenya letsoho ho sireletseha, ho tšepahala, le ho phela nako e telele ha libeteri tsa lithium-ion, ho fokotsa kotsi ea electrode delamination, li-circuits tse khutšoanyane, le liketsahalo tsa ho baleha ha mocheso.
3. Meetso e Ikemetseng: Meetso ea CMC ea boemo ba betri e ka hlophisoa ho fihlela litlhoko tse ikhethileng le lipehelo tsa ts'ebetso tsa lik'hemik'hale tse fapaneng tsa betri, lits'ebetso le lits'ebetso tsa tlhahiso.

Ka kakaretso, carboxymethyl cellulose ea betri (CMC) ke sesebelisoa se ikhethileng se bapalang karolo ea bohlokoa tlhahisong ea libeteri tsa lithium-ion tse sebetsang hantle. Thepa ea eona e ikhethang e le setlamo le sekontiri se teteaneng se kenya letsoho botsitsong, katlehong le polokehong ea li-electrode tsa betri tsa lithium-ion, tse nolofalletsang nts'etsopele ea mahlale a hloekileng a matla le motsamao oa motlakase.