Wanem Em Liquid electrolyte?
Liquid electrolyte
(1) Kemikel komposisen Likwid elektrolaiit ol i kolim tu olsem elektrolaiit solusen. Em i wanpela 'organic liquid electrolyte' we ol i save yusim planti taim insait long ol 'lithium-ion' bateri, na ol i save kolim tu olsem 'non-aqueous liquid electrolyte'. Organic liquid electrolyte em i gat 'lithium salt', 'organic solvent', na ol narapela samting.
Lithium sol: i save givim ol 'conductive ions'. Lithium hexafluorophosphate em i wanpela 'lithium salt' we planti manmeri i save yusim long ol 'lithium-ion' bateri. Pure LiPF6 em i wanpela waitpela kristal, we i save kapsait long ol 'organic solvents' olsem 'low-alkyl ethers', 'nitriles', 'pyridine esters', 'ketones', na 'alcohols', tasol em i no save kapsait tumas long ol 'organic solvents' olsem 'alkanes' na 'benzene'. LiPF6 'electrolyte' i gat bikpela 'conductivity'; long 20 digri, konduktiviti bilong EC+DMC (volium resio 1:1) inap long kamap 10×10-2S/cm. Konduktiviti i save kamap long mak bilong en taim mak bilong 'electrolyte' i klostu long 1mol/L. LiPF6 i gat gutpela 'electrochemical' pefomens na i no save bagarapim 'current collector'. Tasol, LiPF6 i no gat gutpela 'thermal stability' na i save bagarap hariap insait long wara, na i nidim strongpela kontrol bilong wara bilong envairomen taim ol i redim na yusim.
Ol 'organic solvents': Bikpela wok bilong ol em long rausim ol 'lithium salts', na dispela i mekim na 'lithium salt electrolyte' i ken kamapim ol 'conductive ions'.
Ol solvent we ol i save yusim planti taim em olsem 'propylene carbonate', 'dimethyl carbonate', na 'diethyl carbonate'.
Ol i save makim ol 'organic solvents' bikos ol i gat bikpela 'dielectric constant' na liklik 'viscosity'. Wanpela bikpela 'dielectric constant' i mekim ol 'lithium salts' i isi long kapsait na bruk; liklik 'viscosity' i save mekim ol 'ion' i raun hariap. Tasol, tru tru, ol solvent we i gat bikpela 'dielectric constants' i gat bikpela 'viscosity', na ol 'solvent' we i gat liklik 'viscosity' i gat liklik 'dielectric constants'. Olsem na, em i hat long wanpela 'solvent' tasol long inapim olgeta dispela samting long wankain taim. Ol lithium-ion bateri i save yusim miks bilong ol 'organic solvents' wantaim bikpela 'dielectric constants' na ol dispela wantaim liklik 'viscosity' long stretim ol hevi bilong wanwan komponen. Olsem, ol EC kabonet i gat bikpela 'dielectric constants', we i gutpela long 'lithium salt dissociation', tasol ol DMC, DEC, na EMC kabonet i gat liklik 'viscosity', we i helpim long kamapim gutpela 'migration rate' bilong ol 'lithium ions'.
Ol 'Additives': Ol i save mekim wok bilong helpim na strongim wok bilong lektrik na sefti bilong 'electrolyte'. Long tok klia, ol aditiv i gat tripela bikpela wok: aa Mekim wok bilong SEI membrane i kamap gutpela moa, olsem putim vinylene carbonate (VC), vinyl sulfite (ES), na SO2; b. Stopim 'overcharging' (long putim 'biphenyl') na 'over-discharging; c. Ol samting bilong pasim paia inap long stopim bateri long paia o pairap taim em i hat tumas, olsem putim ol marasin bilong pasim paia we i gat 'halogenated', ol marasin bilong pasim paia we i gat 'phosphorus-', na ol marasin bilong pasim paia; d. Daunim wara na HF insait long 'electrolyte'.
