勃姆石在鋰電池隔膜中的應(yīng)用

1、LOGO安徽壹石通材料科技股份有限公司安徽壹石通材料科技股份有限公司材料讓生活更美好材料讓生活更美好1勃姆石簡介勃姆石簡介v 勃姆石又稱軟水鋁石，分子式為AlOOH，顆粒形貌為均勻的立方體，具有耐熱溫度高，硬度低，與有機(jī)物相容性好等特點(diǎn)?？捎行?yīng)用于鋰電池涂層材料、工程塑料的改性劑，電線電纜等有機(jī)物的阻燃劑等。2XRD3Lithium Battery4Lithium battery separator 隔膜是鋰電池必備的內(nèi)層組件，主要功能是電子絕緣離子導(dǎo)通，即隔離正負(fù)極防止短路，同時讓電解液中的離子通過。Why 涂覆無機(jī)顆粒？涂覆無機(jī)顆粒？現(xiàn)有隔膜涂覆工藝主要使用： Al2O3 缺點(diǎn)：涂層厚度

2、缺點(diǎn)：涂層厚度5um對涂覆設(shè)備的磨損嚴(yán)重對涂覆設(shè)備的磨損嚴(yán)重涂覆無機(jī)顆粒的作用：涂覆無機(jī)顆粒的作用： 可以在電池過熱時受熱膨脹，通過閉孔功能來阻隔電流傳導(dǎo)，防止過充和爆炸。不涂覆：孔不閉合不涂覆：孔不閉合 or 閉孔溫度過高閉孔溫度過高5鋰電池隔膜生產(chǎn)工藝鋰電池隔膜生產(chǎn)工藝67Why 勃姆石？勃姆石？Al2O3 Al2O3 產(chǎn)品特性產(chǎn)品特性隔隔膜膜Boehmi teLi+Li+Li+Li+Li+Li+Li+Li+u板狀結(jié)構(gòu)，涂層后有縫隙，不影響鋰離子的穿透和隔膜的透氣性8產(chǎn)品特性產(chǎn)品特性隔隔膜膜Boehmi teu具有優(yōu)異的絕緣性 ，電池工作放熱時膨脹，有效阻斷電流。項(xiàng)目項(xiàng)目含量含量(ppm)

3、Cu5Ca500Fe50Na5009產(chǎn)品特性產(chǎn)品特性BOEHMITE碳酸酯類有機(jī)溶劑鋰鹽含硫有機(jī)溶劑醚類有機(jī)溶劑u具有足夠的化學(xué)和電化學(xué)穩(wěn)定性，不會被電解液腐蝕10產(chǎn)品特性產(chǎn)品特性PP/PEBOEHMITE可涂厚度：可涂厚度：2um5um涂層厚度均勻熱穩(wěn)定性優(yōu)良低硬度，減少機(jī)械磨損u粒度小，顆粒均勻，可以有效降低涂層厚度并保證厚度的均勻性u耐熱性優(yōu)良，有效提高隔膜在鋰電池工作放熱時的熱穩(wěn)定性u硬度低，減少涂層材料對于機(jī)械的磨損11產(chǎn)品指標(biāo)產(chǎn)品指標(biāo)項(xiàng)目項(xiàng)目單位單位BG-613BG-611外觀-白色粉末白色粉末平均粒徑um1.53.00.51.0AlOOH (勃姆石含量）%99.9599.95Ca

4、 鈣含量ppm500500Fe 鐵含量ppm5050Cu 銅含量ppm55Na 鈉含量ppm500500 pH-7.08.57.08.5比表面積 m2/g3.08.53.08.5 水分ppm2000200012產(chǎn)品產(chǎn)品SEMBG-611BG-611BG-613WBG-613W13產(chǎn)品產(chǎn)品PSDBG-611BG-6131415Why 壹石通壹石通 better?他社勃姆石他社勃姆石Test results ITEMUnitJapan Al2O3BG-611HJA-0719D50um0.650.680.64S.S.Am2/g4.67.088.7Viscositycps-41.936.8Slurry

5、 stability-The same level as Japan Al2O3The same level as Japan Al2O3Specific Gravityg/cm33.93.63.9 The specific gravity values are ideal values.Remarks: Since the specific gravity of boehmite is lighter than alumina, we suggest that the adding proportion of boehmite should be reduced compare to alu

6、mina. HJA-0719 is standard type of 0.7um roundish alumina which produced by Sphere company.BG-611 5KXBG-611 10KXLithium battery separator coated with BG-611(B company)Coating with Boehmite BG-611HJA-0719 10KXHJA-0719 5KXLithium battery separator coated with HJA-0719(B company)Coating With Roundish A

7、lumina HJA-0719 HJA-0719 is standard type of 0.7um roundish alumina which produced by Sphere company.ItemBase filmBG-611HJA-0719 Japan Al2O3Thickness（m）15.22019 19Air permeability（s/100mL） 200.2 230.0 230.0 215.6Areal density(g/m2) 8.8 14.014.2 14.01051 h shrinkage（）MD1.2(902h) 1.2 1.2 1.91301h shri

8、nkage（）MD3.0(1051h) 2.72.83.4Sheet resistance（cm2）0.82 1.511.501.45Peel strength（N/m） /54.4 50.8 55.9Moisture（ppm）/12781637964Test results HJA-0719 is standard type of 0.7um roundish alumina produced by Sphere company. HJA-0719SWE high purity type of 0.7um roundish alumina can be provided.v 1. Boehmite BG-611 can replace Japan Al2O3, used in the production of lithium battery separator coating.v 2. Moisture of HJA-0719 is higher than BG-611 an