Zeolite molecular sieves inogona kuiswa kune dehydrate electrolytes kuburikidza nekushambadza kwemuviri, kudzivirira kuipa kwemvura uye nekudaro kuvandudza mashandiro uye kuchengetedzeka kwe lithium bhatiri, iyo yakakwezva kuwedzera kutarisisa munguva pfupi yapfuura.
Constituents Of Common Lithium Electrolytes
Organic solvents ndiyo inonyanya kukosha ye electrolyte, inoverenga inenge 80% ~ 90%. Izvi zvinonyungudutsa zvinosanganisira ethylene carbonate (EC), dimethyl carbonate (DMC), propylene carbonate (PC), diethyl carbonate (DEC), ethyl methyl carbonate (EMC), nezvimwewo.
Lithium munyu chimwe chikamu che electrolyte uye ndiyo musimboti welithium sosi. Aya lithium munyu anosanganisira lithium hexafluorophosphate (LiPF6), lithium bis(fluorosulfonyl)imide (LiFSI), lithium tetrafluoroborate (LiBF₄), lithium perchlorate (LiClO₄), nezvimwewo.
Additives account inosvika 5% ye electrolyte. Izvi zvinowedzera zvinosanganisira firimu-zvinoumba zvinowedzerwa, murazvo{3}}zvisingadzoreki zvinowedzerwa, zvinodzikamisa, nezvimwewo. Semuyenzaniso, bhaisikopo rinozivikanwa-kuumba zvinowedzerwa zvakaita sevinyl carbonate (VC), fluorinated vinyl carbonate (FEC).
Pakazara, kuita kwe lithium electrolyte kunoenderana neiyo synergistic mhedzisiro yezvinonyungudutsa, lithium munyu uye zvinowedzera. Semuenzaniso, musanganiswa weEC/DMC wakasanganiswa solvent uye LiPF6inogona kuenzanisa zvose ionic conductivity uye kugadzikana.
Mhedzisiro Yekuvapo Kwemvura MuElectrolytes
Izvo zvikamu zvinonyanya kutarisisa kuita kwe electrochemical, mvura uye tsvina zvinogona kukanganisa zvakanyanya kugadzirwa uye kunaka kwemabhatiri e lithium. Semuyenzaniso:
Mvura inogona kuita kemikari ine lithium munyu muelectrolyte kugadzira zvinhu zvinokuvadza zvakaita sehydrofluoric acid (HF) uye lithium fluoride (LiF), iyo inogona kukuvadza chimiro chebhatiri, kukonzera kuvuza kana mapfupi maseketi, uye kuderedza huwandu hwebhatiri.
Iyo yakasimba electrolyte interface (SEI) firimu rakagadzirwa nefirimu-kuumba zvinowedzerwa zvinogona kukuvadzwa nemvura, zvichirasa density uye kufanana, izvo zvinoita kuti kuwedzera kwemukati mekudzivirira kwebhatiri uye kudzikira kwesimba rekubuda.
Panguva yekuchaja uye kuburitsa, mvura inogona kuora kuti ibudise magasi (akadai CO₂ uye H₂), iyo inowedzera kudzvanywa kwemukati kwebhatiri. Izvi zvinogona kukonzera kuputika kwebhatiri, kubuda kwemvura, uye kunyange kuputa, moto, uye kuputika, zvichiunza njodzi yekuchengetedza.
Njodzi dzemvura dzinotaurwa mukugadzirisa zvinonyungudutsa dziripowo mu electrolyte. Muchidimbu, kuvepo kwemvura kunobata electrolyte conductivity, electrolyte interface kugadzikana, uye bhatiri kutenderera hupenyu uye kuchengeteka, chinhu chakakosha chekudzora chinhu mukugadzira uye kushandiswa kwe lithium mabhatiri.
Masefa eMolecular For Electrolyte Dehydration
Mashandisirwo emasefa emamorekuru mumaelectrolytes anosiyana zvichienderana nezvinangwa zvawo, sekuomeswa kwesolvent, kupera kwe electrolyte uye deacidification, electrolyte regeneration, uye kukwidziridzwa kweelectrochemical performance.
Tora 5A Zeolite Molecular Sievendiyo inonyanya kufarirwa ne electrolyte dehydration, uye inogona kunyatsobvisa mvura kubva mu electrolyte, kudzivirira kuwedzera kwemukati kupikisa uye electrochemical reactions, nokudaro kuvandudza kushanda uye kuchengeteka kwe lithium battery.
Type 3A, 4A, 13X, mhando, lithium type, uye composite zeolite molecular sieves inogona kusarudzwa kuisa kune lithium electrolytes. Nekusimudzira kushambadza kwavo kwakasimba, ion sieving pfuma uye kugadzikana kwechimiro, kuvandudza kuchena, kugadzikana uye kuita kwebhasikoro kweiyo electrolytes.