台塑鋰鐵導電碳對電池表現之測試

导电碳,使用于台塑锂铁在HighCRate及CycleLife之效果比较。测试之导电碳:YYVGGF/T以及SuperP配方:1.LFP(台塑)94%/YYVGGF0.7%SP2.3%/PVDF(5130)3%2.LFP(台塑)94%/VGCF0.7%SP2.3%/PVDF(5130)3%?3.LFP(台塑)94%/CNT0.7%SP2.3%/PVDF(5130)3% 外加KD10.6phr4.LFP(台塑)90%/SP7%/PVDF(5130)3%下料步骤: 1.预配14%PVDF/NMPsolution 14gPVDF/86gNMPstir4hr1000rpm 2.NMP/PVDF→VGGF/SP→LiFePO4 1hr3hr 2000rpm1500rpm台塑锂铁?多种导电碳效果测试6配方导电碳含量%面密度mg/cm2第一次不可逆%第一次放电容量mah/gFormation3圈容量mah/gYYVGGF0.7%SP2.3%310.56AVG17.6AVG123AVG124VGCF0.7%SP2.3%310.58AVG36.5AVG104.T0.7%SP2.3%310.58AVG16.2AVG123AVG124不可逆以及电容量比较78全电池HIGHCRATE比较全电池CYCLELIFE测试9正极:1.LFP(台塑)94%/YYVGGF0.7%SP2.3%/PVDF(5130)3?2.LFP(台塑)94%/CNT0.7%SP2.3%/PVDF(5130)3%外加KD10.6phr?3.LFP(台塑)90%/SP7%/PVDF(5130)3%负极:FMGP95%VGCF1%YYVGGF在1C、3C、T循环寿命测试可看出YYVGGF电容衰退最小,T,SP最差循环寿命测试中,加CNT在前100cycles表现相当不稳定,是否肇因于金属含量高,需进一步探讨。Conclusion10