Battery-grade CMC

Battery-grade carboxymethyl cellulose (CMC) ndi mtundu wapadera wa CMC womwe umagwiritsidwa ntchito ngati binder ndi thickening agent popanga mabatire a lithiamu-ion (LIBs). Ma LIB ndi mabatire omwe amatha kuchangidwanso omwe amagwiritsidwa ntchito pazida zonyamulika, magalimoto amagetsi, ndi makina osungira mphamvu chifukwa cha kuchuluka kwawo kwamphamvu komanso moyo wautali. Battery-grade CMC imagwira ntchito yofunika kwambiri popanga ma elekitirodi a LIBs, makamaka popanga ma elekitirodi a cathode ndi anode.

Ntchito ndi Katundu wa Battery-Grade CMC:

1. Binder: Battery-grade CMC imakhala ngati chomangira chomwe chimathandiza kugwira ntchito zamagetsi (monga lithiamu cobalt oxide kwa cathodes ndi graphite kwa anodes) pamodzi ndi kuwatsatira ku gawo lapansi lamakono (nthawi zambiri zotayira zotayidwa za cathodes ndi zojambula zamkuwa za anode). ). Izi zimatsimikizira kuyendetsa bwino kwamagetsi komanso kukhazikika kwamakina a elekitirodi.
2. Thickening Agent: Battery-grade CMC imagwiranso ntchito ngati thickening mu electrode slurry formulation. Imathandiza kuwongolera mamasukidwe akayendedwe ndi rheological katundu slurry, kulola yunifolomu ❖ kuyanika ndi mafunsidwe a ma elekitirodi chuma pa wotolera panopa. Izi zimatsimikizira makulidwe a electrode osasinthasintha ndi kachulukidwe, zomwe ndizofunikira kwambiri kuti batire igwire bwino ntchito.
3. Ionic Conductivity: Battery-grade CMC ikhoza kusinthidwa mwapadera kapena kupangidwa kuti ipititse patsogolo kayendedwe kake ka ionic mkati mwa electrolyte ya batri. Izi zitha kupititsa patsogolo magwiridwe antchito a electrochemical komanso mphamvu ya batri ya lithiamu-ion.
4. Kukhazikika kwa Electrochemical: Battery-grade CMC idapangidwa kuti isunge kukhulupirika kwake komanso kukhazikika kwa electrochemical pautali wamoyo wa batri, ngakhale pamayendedwe ovuta kwambiri monga kutentha kwambiri komanso kukwera njinga. Izi zimatsimikizira kudalirika kwa nthawi yayitali komanso chitetezo cha batri.

Njira Yopangira:

Battery-grade CMC nthawi zambiri imapangidwa kudzera mu kusintha kwa mankhwala a cellulose, polysaccharide yachilengedwe yochokera ku ulusi wa zomera. Magulu a carboxymethyl (-CH2COOH) amalowetsedwa pamsana wa cellulose kudzera pamachitidwe angapo amankhwala, zomwe zimapangitsa kupanga carboxymethyl cellulose. Mlingo wa carboxymethyl m'malo ndi kulemera kwa maselo a CMC zitha kupangidwa kuti zikwaniritse zofunikira za batri ya lithiamu-ion.

Mapulogalamu:

Battery-grade CMC imagwiritsidwa ntchito popanga maelekitirodi a mabatire a lithiamu-ion, kuphatikiza ma cylindrical ndi ma cell cell. Zimaphatikizidwa mu electrode slurry formulation pamodzi ndi zigawo zina monga zida zogwiritsira ntchito electrode, zowonjezera zowonjezera, ndi zosungunulira. Ma electrode slurry amakutidwa pagawo lotolera pano, zowuma, ndikusonkhanitsidwa mu cell yomaliza ya batri.

Ubwino:

1. Kuchita bwino kwa Electrode Performance: Battery-grade CMC imathandizira kupititsa patsogolo magwiridwe antchito a electrochemical, kukhazikika kwa njinga, komanso kuchuluka kwa mabatire a lithiamu-ion powonetsetsa kuti ma elekitirodi amaphikira komanso kumamatira mwamphamvu pakati pa zida zogwira ntchito ndi otolera apano.
2. Chitetezo Chowonjezereka ndi Kudalirika: Kugwiritsa ntchito CMC yapamwamba kwambiri ya batri yokhala ndi katundu wogwirizana kumathandizira kuti pakhale chitetezo, kudalirika, ndi moyo wautali wa mabatire a lithiamu-ion, kuchepetsa chiopsezo cha electrode delamination, maulendo afupikitsa, ndi zochitika zothawa kutentha.
3. Mapangidwe Ogwirizana: Mapangidwe a CMC a Battery-grade akhoza kusinthidwa kuti akwaniritse zofunikira ndi zolinga zamakina osiyanasiyana a batri, magwiritsidwe ntchito, ndi njira zopangira.

Mwachidule, batri-grade carboxymethyl cellulose (CMC) ndi chinthu chapadera chomwe chimagwira ntchito yofunika kwambiri popanga mabatire a lithiamu-ion apamwamba kwambiri. Makhalidwe ake apadera monga binder ndi thickening agent amathandizira kukhazikika, kugwira ntchito bwino, ndi chitetezo cha ma electrode a lithiamu-ion batri, zomwe zimathandizira kupita patsogolo kwaukadaulo wamagetsi oyera komanso kuyenda kwamagetsi.