世韩IFR18650EC负极课件.ppt

世韩IFR-18650EC负极分析1世韩IFR18650EC负极课件一.分析项目•极片尺寸•极片黑白度•极片厚度•极片涂敷量•极片粘结力•SEM&EDS2世韩IFR18650EC负极课件1.极片尺寸对比 世韩极片尺寸由极组拆开测得，所以间隔尺寸没法测量，只有第一面和第二面涂敷长度，共测量5个极组 力神极片尺寸由检验记录查询得到第一面第二面666615666615666615666615666615由于取样数量的限制，无法进行分析但从测得数值来看，世韩负极尺寸相当稳定力神负极存在一定的波动第一面第二面664615664616665615665615664616世韩负极力神负极3世韩IFR18650EC负极课件2.极片黑白度对比碾压前碾压后64.994.666.298.964.797.566.696.666.197.168.79567.395.866.79864.195.867.691.4黑白度测试对碾压前和碾压后极片进行测试，方便对比两种负极碾压前后黑白度变化都较大世韩负极碾压前碾压后62.581.362.881.163.181.962.282.463.281.462.882.362.781.862.882.162.281.562.181.6力神负极4世韩IFR18650EC负极课件3.极片碾压厚度对比①②③④⑤ ⑥取样方法：分别从上中下，左中右位置拉取小条，分别检测厚度和涂敷量。

5世韩IFR18650EC负极课件115815815115415815415815715515715815821561541541581511551531571551561561573157153153153157157155152156157153153415515215315615415815715515515715215251551541541501561551561551551551541556156151154157155153152157155156155152世韩极片碾压前厚度碾压前极片厚度均值：155μ6世韩IFR18650EC负极课件世韩极片碾压后厚度1100979698100989610098979795210110197100100100991019998100983969695979596999596100969749899981009899979598969696510096979810097999896959497610198999796971009698979797碾压后极片厚度均值：98μ碾压厚度标准：103±4μ横向极差：第一条5μ，第二条4μ，第三条5μ纵向极差：第一条5μ，第二条6μ，第三条5μ碾压压缩比率：（碾压压缩比率：（155-98））/155*100％＝％＝36.77％％7世韩IFR18650EC负极课件116516416516616516521651661641651651653164165165166165164力神极片碾压前厚度碾压前极片厚度均值：165μ8世韩IFR18650EC负极课件1100101102103102102101100999910010021011011031021021031041021001011001023991009910110310410310210210110099力神极片碾压后厚度碾压后极片厚度均值：101μ碾压厚度标准：103±4μ纵向极差：第一条3μ，第二条4μ，第三条5μ碾压压缩比率：（碾压压缩比率：（165-101））/165*100％＝％＝38.79％％9世韩IFR18650EC负极课件4.极片涂敷量对比10.17510.1750.17520.17530.17520.17480.17490.17550.17530.17540.175420.17460.17480.17490.17480.17490.17480.17430.17460.17480.1750.175230.17630.17540.17580.17560.17520.17540.1750.17510.17550.17530.175840.17480.17550.17560.17530.17490.17470.17490.17440.17430.17510.174950.17570.1760.17580.17540.17570.17510.17560.17520.17550.17550.175660.17560.17550.17550.17540.17530.17480.17530.17530.17530.17560.1759世韩极片碾压前涂敷量极片碾压前涂敷量均值：0.1752横向极差：第一条0.0006，第二条0.0009，第三条0.0013纵向极差：第一条0.0013，第二条0.0009，第三条0.001110世韩IFR18650EC负极课件世韩极片碾压后涂敷量10.17510.17440.17480.17460.17410.17460.17450.17490.17460.17460.174620.17510.1750.17480.17510.17510.17510.17510.17460.17470.17490.174730.17460.17440.17440.17410.17450.17460.17460.17450.17450.17460.174640.17430.17520.17460.17460.17420.17450.17450.17540.17430.17450.174650.17490.17460.17430.17420.17420.17450.17380.17450.17440.17440.174660.17420.17460.17460.1750.17470.17470.17430.17420.17460.17430.1741极片碾压后涂敷量均值：0.1746碾压前后涂敷量变化比率碾压前后涂敷量变化比率：（：（0.1752-0.1746））/0.1752*100％＝％＝0.3425％％11世韩IFR18650EC负极课件力神极片碾压前涂敷量极片碾压前涂敷量均值：0.1763横向极差：第一条0.0013，第二条0.0032，第三条0.003410.17620.17530.17550.17540.17530.17590.17550.17550.17660.176320.17860.17640.17660.17540.17790.17620.17640.17690.17650.178230.17590.17580.17520.17580.17770.17850.17630.17510.17620.177512世韩IFR18650EC负极课件10.17550.17540.17580.17560.17610.17660.17650.17690.17560.17560.176620.17510.17550.17580.17610.17680.17510.17510.17560.17570.17590.175730.17560.17640.17540.17510.17450.17460.17560.17550.17650.17660.1768力神极片碾压后涂敷量极片碾压后涂敷量均值：0.1758碾压前后涂敷量变化比率碾压前后涂敷量变化比率：（：（0.1763-0.1758））/0.1763*100％＝％＝0.2836％％13世韩IFR18650EC负极课件5.极片粘结力世韩负极力神负极世韩负极粘结力400～500gf，力神负极粘结力260～300gf。

14世韩IFR18650EC负极课件6.SEM&EDS未碾压极片SEM：世韩负极15世韩IFR18650EC负极课件未碾压极片EDS：ElementWt%At% C K91.8695.63 O K01.4401.12 F K04.1702.75 CuK02.5200.5016世韩IFR18650EC负极课件未碾压极片断面SEM：17世韩IFR18650EC负极课件未碾压极片断面EDS：ElementWt%At% C K53.9780.48 O K07.0107.84 AlK00.7600.50 SiK00.4600.30 P K00.8500.49 ClK00.3100.16 CuK23.3506.58 ZnK13.2903.6418世韩IFR18650EC负极课件未碾压极片断面EDS：ElementWt%At% C K49.3979.08 O K06.4707.78 AlK00.8900.64 SiK00.4500.31 P K00.0000.00 PtM03.4800.34 ClK00.3500.19 CuK23.5907.14 ZnK15.3804.5219世韩IFR18650EC负极课件已碾压极片SEM对比：世韩负极力神负极20世韩IFR18650EC负极课件已碾压极片EDS对比：ElementWt%At% C K92.6496.23 O K01.1900.92 F K03.5402.33 CuK02.6400.52世韩负极 Element Wt % At % C K95.5897.16 F K04.4202.84力神负极21世韩IFR18650EC负极课件已碾压极片断面SEM对比：世韩负极力神负极22世韩IFR18650EC负极课件已碾压极片断面EDS对比：ElementWt%At% C K48.0575.89 O K07.7509.19 F K01.8101.81 AlK00.7600.54 P K00.8900.55 CuK26.1607.81 ZnK14.5804.23ElementWt%At% C K83.1295.50 O K01.2701.09 ClK00.1000.04 CuK15.5103.37世韩负极力神负极23世韩IFR18650EC负极课件二.分析结果：•世韩极片尺寸稳定，力神极片尺寸存在一定的波动。

•世韩和力神负极极片碾压前后黑白度变化较大•世韩碾压极差最大6μ，碾压前后压缩比率36.77％；力神碾压极差最大5μ，碾压前后压缩比率38.79％•世韩涂敷双面极差0.2mg/cm2，涂敷量碾压前后变化比率0.3425％；力神涂敷双面极差0.5mg/cm2，涂敷量碾压前后变化比率0.2836％；理论上，极片碾压前后压缩比越大，涂敷量碾压前后变化比率也应该越大力神负极涂敷量数据来源于生产，和实际测量有一定的差异•世韩负极在粘结力方面要优于力神负极 世韩负极400～500gf，力神负极260～300gf•SEM&EDS对比差异不大，除了断面EDS有异常成分，可能制样时引入24世韩IFR18650EC负极课件。