Citation: Ding Lei, Guan Xu, Qian Ge, Tong Wu, Feng Yang, Xiang Ming. Effect of Fumed SiO₂ on Pore Formation Mechanism and Various Performances of β-iPP Microporous Membrane Used for Lithium-ion Battery Separator[J]. Chinese Journal of Polymer Science, ;2018, 36(4): 536-545. doi: 10.1007/s10118-018-2029-7 shu

Effect of Fumed SiO₂ on Pore Formation Mechanism and Various Performances of β-iPP Microporous Membrane Used for Lithium-ion Battery Separator

State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China

Corresponding author: Feng Yang, yangfengscu@126.com
Received Date: 17 June 2017
Accepted Date: 30 August 2017
Available Online: 7 November 2017

In this work, four samples containing different contents of fumed SiO₂ were prepared to improve the pore size distribution and various properties of β nucleated isotatic polypropylene (β-iPP) biaxial membrane used for lithium-ion battery separator. The wide-angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC) results show that the fumed SiO₂ promotes the formation of β-crystal slightly and narrows down the thickness distribution of β-lamellae; meanwhile, evenly distributed SiO₂ within β-iPP can be inspected by scanning electron microscopy (SEM). Moreover, further detailed characterization of morphological evolutions during biaxial stretching by tensile testing and SEM manifests that SiO₂ can strengthen β-iPP and make the samples deform more homogeneously, resulting in a gradually elaborate and finer oriented microfibril structure after longitudinal stretching, in which more uniform defects distribute between fibrils and restrain the formation of coarse fibrils effectively. Therefore, more superior microporous structure emerges with the addition of SiO₂, accompanied by narrower pore size distribution and better connectivity between microvoids, which is confirmed by mercury porosimeter and diminished Gurley value. Moreover, the lower thermal shrinkage, decreased shrinkage rate and suppressed porosity reduction indicate that fumed SiO₂ improves thermal and dimensional stability of membrane dramatically. Furthermore, due to the excellent wettability of SiO₂ with electrolyte, the microporous membranes doped with SiO₂ have higher electrolyte uptake, even after heat treatment at elevated temperature.
- β Nucleated polypropylene,
- Fumed SiO₂,
- Microporous membrane,
- Pore size distribution,
- Thermal stability and wettability
1. [1]
  Arora P., Zhang Z. J.. Battery separators[J]. Chem. Rev., 2004,104(10):4419-4462. doi: 10.1021/cr020738u
2. [2]
  Huang X.. A lithium-ion battery separator prepared using a phase inversion process[J]. J. Power Sources, 2012,216:216-221. doi: 10.1016/j.jpowsour.2012.05.019
3. [3]
  Jeong H., Hong S. C., Lee S.. Effect of microporous structure on thermal shrinkage and electrochemical performance of Al₂O₃/poly(vinylidene fluoride-hexafluoropropylene) composite separators for lithium-ion batteries[J]. J. Membr. Sci., 2010,364(1-2):177-182. doi: 10.1016/j.memsci.2010.08.012
4. [4]
  Jeong H., Kim D., Jeong Y. U., Lee S.. Effect of phase inversion on microporous structure development of Al₂O₃/poly(vinylidene fluoride-hexafluoropropylene)-based ceramic composite separators for lithium-ion batteries[J]. J. Power Sources, 2010,195(18):6116-6121. doi: 10.1016/j.jpowsour.2009.10.085
5. [5]
  Lalia B. S., Kochkodan V., Hashaikeh R., Hilal N.. A review on membrane fabrication:structure, properties and performance relationship[J]. Desalination, 2013,326:77-95. doi: 10.1016/j.desal.2013.06.016
6. [6]
  Sohn J., Im J., Shin J., Nho Y. C.. PVDF-HFP/PMMA-coated PE separator for lithium ion battery[J]. J. Solid State Electr., 2012,16(2):551-556. doi: 10.1007/s10008-011-1379-7
7. [7]
  Song K. W., Kim C. K.. Coating with macroporous polyarylate via a nonsolvent induced phase separation process for enhancement of polyethylene separator thermal stability[J]. J. Membr. Sci., 2010,352(1-2):239-246. doi: 10.1016/j.memsci.2010.02.020
8. [8]
  Zhang S. S.. A review on the separators of liquid electrolyte Li-ion batteries[J]. J. Power Sources, 2007,164(1):351-364. doi: 10.1016/j.jpowsour.2006.10.065
9. [9]
  Li J. X., Cheung W. L.. On the deformation mechanisms of β-polypropylene:1[J]. Effect of necking on β-phase PP crystals. Polymer, 1998,39(26):6935-6940.
10. [10]
  Li J. X., Cheung W. L., Chan C. M.. On deformation mechanisms of β-polypropylene 2[J]. Changes of lamellar structure caused by tensile load. Polymer, 1999,40(8):2089-2102.
11. [11]
  Li J. X., Cheung W. L., Chan C. M.. On deformation mechanisms of β-polypropylene 3[J]. Lamella structures after necking and cold drawing. Polymer, 1999,40(13):3641-3656.
12. [12]
  Sadeghi F., Ajji A., Carreau P.. Analysis of microporous membranes obtained from polypropylene films by stretching[J]. J. Membr. Sci., 2007,292(1-2):62-71. doi: 10.1016/j.memsci.2007.01.023
13. [13]
  Tabatabaei S., Carreau P., Ajji A.. Microporous membranes obtained from polypropylene blend films by stretching[J]. J. Membr. Sci., 2008,325(2):772-782. doi: 10.1016/j.memsci.2008.09.001
14. [14]
  Ihm D., Noh J., Kim J.. Effect of polymer blending and drawing conditions on properties of polyethylene separator prepared for Li-ion secondary battery[J]. J. Power Sources, 2002,109(2):388-393. doi: 10.1016/S0378-7753(02)00097-6
15. [15]
  Kim S. S., Lloyd D. R.. Microporous membrane formation via thermally-induced phase separation.Ⅲ. Effect of thermodynamic interactions on the structure of isotactic polypropylene membranes[J]. J. Membr. Sci., 1991,64(1-2):13-29.
16. [16]
  Wu T., Xiang M., Cao Y., Kang J., Yang F.. Pore formation mechanism of β nucleated polypropylene stretched membranes[J]. RSC Adv., 2014,4(69):36689-36701. doi: 10.1039/C4RA03589E
17. [17]
  Wu T., Xiang M., Cao Y., Kang J., Yang F.. Influence of lamellar structure on double yield behavior and pore size distribution in β nucleated polypropylene stretched membranes[J]. RSC Adv., 2014,4(81):43012-43023. doi: 10.1039/C4RA06310D
18. [18]
  Wu T., Xiang M., Cao Y., Kang J., Yang F.. Influence of lamellar structure on the stress-strain behavior of β nucleated polypropylene under tensile loading at elevated temperatures[J]. RSC Adv., 2015,5(54):43496-43507. doi: 10.1039/C5RA05844A
19. [19]
  Yang F., Wu T., Xiang M., Cao Y.. Deformation and pore formation mechanism of β nucleated polypropylene with different supermolecular structures[J]. Eur. Polym. J., 2017. doi: 10.1016/j.eurpolymj.2017.03.059
20. [20]
  Huang X., Hitt J.. Lithium ion battery separators:development and performance characterization of a composite membrane[J]. J. Membr. Sci., 2013,425:163-168.
21. [21]
  Jeong H., Kim J. H., Lee S.. A novel poly(vinylidene fluoride-hexafluoropropylene)/poly(ethylene terephthalate) composite nonwoven separator with phase inversion-controlled microporous structure for a lithium-ion battery[J]. J. Mater. Chem., 2010,20(41):9180-9186. doi: 10.1039/c0jm01086c
22. [22]
  Jeong H., Lee S.. Closely packed SiO₂ nanoparticles/poly(vinylidene fluoride-hexafluoropropylene) layers-coated polyethylene separators for lithium-ion batteries[J]. J. Power Sources, 2011,196(16):6716-6722. doi: 10.1016/j.jpowsour.2010.11.037
23. [23]
  Park J., Cho J., Park W., Ryoo D., Yoon S., Kim J., Jeong Y., Lee S.. Close-packed SiO₂/poly(methyl methacrylate) binary nanoparticles-coated polyethylene separators for lithium-ion batteries[J]. J. Power Sources, 2010,195(24):8306-8310. doi: 10.1016/j.jpowsour.2010.06.112
24. [24]
  Liu F., Xiao Q., Wu H. B.. Regenerative polysulfide-scavenging layers enabling lithium-sulfur batteries with high energy density and prolonged cycling life[J]. ACS Nano, 2017,11(3):2697-2705. doi: 10.1021/acsnano.6b07603
25. [25]
  Choi J., Kim S. H., Kim D.. Enhancement of thermal stability and cycling performance in lithium-ion cells through the use of ceramic-coated separators[J]. J. Power Sources, 2010,195(18):6192-6196. doi: 10.1016/j.jpowsour.2009.11.020
26. [26]
  Kim K. J., Kim J., Park M., Kwon H. K., Kim H., Kim Y. J.. Enhancement of electrochemical and thermal properties of polyethylene separators coated with polyvinylidene fluoride-hexafluoropropylene co-polymer for Li-ion batteries[J]. J. Power Sources, 2012,198:298-302. doi: 10.1016/j.jpowsour.2011.09.086
27. [27]
  Kim K. M., Kim J., Ryu K. S.. Characteristics of PVDF-HFP/TiO₂ composite electrolytes prepared by a phase inversion technique using dimethyl acetamide solvent and water non-solvent[J]. Macromol. Mater. Eng., 2006,291(12):1495-1502. doi: 10.1002/(ISSN)1439-2054
28. [28]
  Li Z., Su G., Gao D., Wang X., Li X.. Effect of Al₂O₃ nanoparticles on the electrochemical characteristics of P(VDF-HFP)-based polymer electrolyte[J]. Electrochim Acta, 2004,49(26):4633-4639. doi: 10.1016/j.electacta.2004.05.018
29. [29]
  Wachtler M., Ostrovskii D., Jacobsson P., Scrosati B.. A study on PVDF-based SiO₂-containing composite gel-type polymer electrolytes for lithium batteries[J]. Electrochim. Acta, 2004,50(2-3):357-361. doi: 10.1016/j.electacta.2004.01.103
30. [30]
  Shi C., Dai J., Shen X.. A high-temperature stable ceramic-coated separator prepared with polyimide binder/Al₂O₃ particles for lithium-ion batteries[J]. J. Membr. Sci., 2016,517:91-99. doi: 10.1016/j.memsci.2016.06.035
31. [31]
  Yu L., Miao J., Jin Y., Lin J.. A comparative study on polypropylene separators coated with different inorganic materials for lithium-ion batteries[J]. Front. Chem. Sci. Eng., 2017. doi: 10.1007/s11705-017-1648-9
32. [32]
  Takemura D., Aihara S., Hamano K.. A powder particle size effect on ceramic powder based separator for lithium rechargeable battery[J]. J. Power Sources, 2005,146(1-2):779-783. doi: 10.1016/j.jpowsour.2005.03.159
33. [33]
  Zhang S., Xu K., Jow T.. An inorganic composite membrane as the separator of Li-ion batteries[J]. J. Power Sources, 2005,140(2):361-364. doi: 10.1016/j.jpowsour.2004.07.034
34. [34]
  Huang X.. Separator technologies for lithium-ion batteries[J]. J. Solid State Electrochem., 2011,15(4):649-662. doi: 10.1007/s10008-010-1264-9
35. [35]
  Varga J.. β-Modification of isotactic polypropylene:preparation, structure, processing, properties and application[J]. J. Macromol. Sci. B, 2002,41(4):1121-1171. doi: 10.1081/MB-120013089
36. [36]
  Huo H., Jiang S., An L., Feng J.. Influence of shear on crystallization behavior of the β phase in isotactic polypropylene with β-nucleating agent[J]. Macromolecules, 2004,37(7):2478-2483. doi: 10.1021/ma0358531
37. [37]
  Luo F., Geng C., Wang K., Deng H., Chen F., Fu Q., Na B.. New understanding in tuning toughness of β-polypropylene:the role of β-nucleated crystalline morphology[J]. Macromolecules, 2009,42(23):9325-9331. doi: 10.1021/ma901651f
38. [38]
  Wu T., Cao Y., Yang F., Xiang M.. Investigation on double yielding behavior under tensile loading in isotactic polypropylene[J]. Mater. Design, 2014. doi: 10.1016/j.matdes.2014.03.044
39. [39]
  Lin Y., Meng L., Wu L.. A semi-quantitative deformation model for pore formation in isotactic polypropylene microporous membrane[J]. Polymer., 2015. doi: 10.1016/j.polymer.2015.10.067
40. [40]
  Aboulfaraj M., G'Sell C., Ulrich B., Dahoun A.. In situ observation of the plastic deformation of polypropylene spherulites under uniaxial tension and simple shear in the scanning electron microscope[J]. Polymer, 1995,36(4):731-742. doi: 10.1016/0032-3861(95)93102-R
41. [41]
  Bassett D. C., Olley R. H.. On the lamellar morphology of isotactic polypropylene spherulites[J]. Polymer, 1984,25(7):935-943. doi: 10.1016/0032-3861(84)90076-4
42. [42]
  Olley R. H., Bassett D. C.. On the development of polypropylene spherulites[J]. Polymer, 1989,30(3):399-409. doi: 10.1016/0032-3861(89)90004-9
43. [43]
  Olley R. H., Hodge A. M., Bassett D. C.. A permanganic etchant for polyolefines[J]. J. Polym. Sci:Polym. Phys. Ed., 1979,17(4):627-643. doi: 10.1002/pol.1979.180170406
44. [44]
  Ran S., Xu M.. Studies on the pore formation mechanism of β-crystalline polypropylene under stretching[J]. Chinese J. Polym. Sci., 2004,22(2):123-130.
45. [45]
  Zhu W., Zhang X., Zhao C., Wu W., Hou J., Xu M.. A Novel polypropylene microporous film[J]. Polym. Adv. Technol., 1996,7(9):743-748. doi: 10.1002/(ISSN)1099-1581
46. [46]
  Liu S., Zhou C., Yu W.. Phase separation and structure control in ultra-high molecular weight polyethylene microporous membrane[J]. J. Membr. Sci., 2011,379(1-2):268-278. doi: 10.1016/j.memsci.2011.05.073
47. [47]
  Fu D., Luan B., Argue S., Bureau M., Davidson I.. Nano SiO₂ particle formation and deposition on polypropylene separators for lithium-ion batteries[J]. J. Power Sources, 2012. doi: 10.1016/j.jpowsour.2011.10.130
48. [48]
  Osińska M., Walkowiak M., Zalewska A., Jesionowski T.. Study of the role of ceramic filler in composite gel electrolytes based on microporous polymer membranes[J]. J. Membr. Sci., 2009,326(2):582-588. doi: 10.1016/j.memsci.2008.10.036
49. [49]
  Bai H., Luo F., Zhou T., Deng H., Wang K., Fu Q.. New insight on the annealing induced microstructural changes and their roles in the toughening of β-form polypropylene[J]. Polymer, 2011,52(10):2351-2360. doi: 10.1016/j.polymer.2011.03.017
50. [50]
  Bai H., Wang Y., Zhang Z., Han L., Li Y., Liu L., Zhou Z., Men Y.. Influence of annealing on microstructure and mechanical properties of isotactic polypropylene with β-phase nucleating agent[J]. Macromolecules, 2009,42(17):6647-6655. doi: 10.1021/ma9001269
51. [51]
  Ding L., Wu T., Yang F., Xiang M.. Deformation and pore formation mechanism under tensile loading in isotactic polypropylene[J]. Polym. Int., 2017,66(8):1129-1140. doi: 10.1002/pi.2017.66.issue-8
52. [52]
  Lin K. Y., Xanthos M., Sirkar K. K.. Novel polypropylene microporous membranes via spherulitic deformation-processing perspectives[J]. Polymer, 2009,50(19):4671-4682. doi: 10.1016/j.polymer.2009.07.014
53. [53]
  Lin K. Y., Xanthos M., Sirkar K. K.. Novel polypropylene-based microporous membranes via spherulitic deformation[J]. J. Membr. Sci., 2009,330(1-2):267-278. doi: 10.1016/j.memsci.2008.12.060
54. [54]
  Wu C., Zhang M., Rong M., Friedrich K.. Tensile performance improvement of low nanoparticles filled-polypropylene composites[J]. Compos. Sci. Technol., 2002,62(10-11):1327-1340. doi: 10.1016/S0266-3538(02)00079-9
55. [55]
  Hwang S., Hsu P. P.. Effects of silica particle size on the structure and properties of polypropylene/silica composites foams[J]. J. Ind. Eng. Chem., 2013,19(4):1377-1383. doi: 10.1016/j.jiec.2012.12.043
56. [56]
  Zhou T., Ruan W., Mai Y., Rong M., Zhang M.. Performance improvement of nano-silica/polypropylene composites through in-situ cross-linking approach[J]. Compos. Sci. Technol., 2008,68(14):2858-2863. doi: 10.1016/j.compscitech.2007.10.002
57. [57]
  Dougnac V. N., Alamillo R., Peoples B. C., Quijada R.. Effect of particle diameter on the permeability of polypropylene/SiO₂ nanocomposites[J]. Polymer, 2010,51(13):2918-2926. doi: 10.1016/j.polymer.2010.02.014
58. [58]
  Chen J., Rong M., Ruan W., Zhang M.. Interfacial enhancement of nano-SiO₂/polypropylene composites[J]. Compos. Sci. Technol., 2009,69(2):252-259. doi: 10.1016/j.compscitech.2008.10.013
59. [59]
  Hsu C., Chien L., Kuo P.. High thermal and electrochemical stability of a SiO₂ nanoparticle hybird-polyether cross-linked membrane for safety reinforced lithium-ion batteries[J]. RSC Adv., 2016,6(22):18089-18095. doi: 10.1039/C5RA26694G
60. [60]
  Liu H., Xu J., Guo B., He X.. Preparation and performance of silica/polypropylene composite separator for lithium-ion batteries[J]. J. Mater. Sci., 2014,49(20):6961-6966. doi: 10.1007/s10853-014-8401-2
61. [61]
  Jia D., Wang L.. Decoration of silica nanoparticles on polypropylene separator for lithium-sulfur batteries[J]. ACS Appl. Mater. Interfaces, 2017,9(8):7499-7504. doi: 10.1021/acsami.7b00065
62. [62]
  Wang Y., Wang S., Fang J., Ding L., Wang H.. A nano-silica modified polyimide nanofiber separator with enhanced thermal and wetting properties for high safety lithium-ion batteries[J]. J. Membr. Sci., 2017,537:248-254. doi: 10.1016/j.memsci.2017.05.023
1. [1]
  Xinpin Pan , Yongjian Cui , Zhe Wang , Bowen Li , Hailong Wang , Jian Hao , Feng Li , Jing Li . Robust chemo-mechanical stability of additives-free SiO₂ anode realized by honeycomb nanolattice for high performance Li-ion batteries. Chinese Chemical Letters, 2024, 35(10): 109567-. doi: 10.1016/j.cclet.2024.109567
2. [2]
  Zhenzhen Zhao , Meichen Jiao , Jiejie Ling , Han Jiang , Yan Gao , Hao Xu , Hai-Qing Li , Jingang Jiang , Peng Wu , Le Xu . Toward the microporous zeolite family with tunable large-medium cage and pore opening. Chinese Journal of Structural Chemistry, 2024, 43(9): 100336-100336. doi: 10.1016/j.cjsc.2024.100336
3. [3]
  Ningning Gao , Yue Zhang , Zhenhao Yang , Lijing Xu , Kongyin Zhao , Qingping Xin , Junkui Gao , Junjun Shi , Jin Zhong , Huiguo Wang . Ba²⁺/Ca²⁺ co-crosslinked alginate hydrogel filtration membrane with high strength, high flux and stability for dye/salt separation. Chinese Chemical Letters, 2024, 35(5): 108820-. doi: 10.1016/j.cclet.2023.108820
4. [4]
  Yan Zou , Yin-Shuang Hu , Deng-Hui Tian , Hong Wu , Xiaoshu Lv , Guangming Jiang , Yu-Xi Huang . Tuning the membrane rejection behavior by surface wettability engineering for an effective water-in-oil emulsion separation. Chinese Chemical Letters, 2024, 35(6): 109090-. doi: 10.1016/j.cclet.2023.109090
5. [5]
  Xubin Qian , Lei Xu , Xu Ge , Zhun Liu , Cheng Fang , Jianbing Wang , Junfeng Niu . Can perfluorooctanoic acid be effectively degraded using β-PbO₂ reactive electrochemical membrane?. Chinese Chemical Letters, 2024, 35(7): 109218-. doi: 10.1016/j.cclet.2023.109218
6. [6]
  Juan Guo , Mingyuan Fang , Qingsong Liu , Xiao Ren , Yongqiang Qiao , Mingju Chao , Erjun Liang , Qilong Gao . Zero thermal expansion in Cs₂W₃O₁₀. Chinese Chemical Letters, 2024, 35(7): 108957-. doi: 10.1016/j.cclet.2023.108957
7. [7]
  Chaochao Wei , Ru Wang , Zhongkai Wu , Qiyue Luo , Ziling Jiang , Liang Ming , Jie Yang , Liping Wang , Chuang Yu . Revealing the size effect of FeS₂ on solid-state battery performances at different operating temperatures. Chinese Chemical Letters, 2024, 35(6): 108717-. doi: 10.1016/j.cclet.2023.108717
8. [8]
  Ying Zhao , Yin-Hang Chai , Tian Chen , Jie Zheng , Ting-Ting Li , Francisco Aznarez , Li-Long Dang , Lu-Fang Ma . Size-controlled synthesis and near-infrared photothermal response of Cp* Rh-based metalla[2]catenanes and rectangular metallamacrocycles. Chinese Chemical Letters, 2024, 35(6): 109298-. doi: 10.1016/j.cclet.2023.109298
9. [9]
  Yi Herng Chan , Zhe Phak Chan , Serene Sow Mun Lock , Chung Loong Yiin , Shin Ying Foong , Mee Kee Wong , Muhammad Anwar Ishak , Ven Chian Quek , Shengbo Ge , Su Shiung Lam . Thermal pyrolysis conversion of methane to hydrogen (H₂): A review on process parameters, reaction kinetics and techno-economic analysis. Chinese Chemical Letters, 2024, 35(8): 109329-. doi: 10.1016/j.cclet.2023.109329
10. [10]
  Bin Dong , Ning Yu , Qiu-Yue Wang , Jing-Ke Ren , Xin-Yu Zhang , Zhi-Jie Zhang , Ruo-Yao Fan , Da-Peng Liu , Yong-Ming Chai . Double active sites promoting hydrogen evolution activity and stability of CoRuOH/Co₂P by rapid hydrolysis. Chinese Chemical Letters, 2024, 35(7): 109221-. doi: 10.1016/j.cclet.2023.109221
11. [11]
  Xin Zhang , Junyu Chen , Xiang Pei , Linxin Yang , Liang Wang , Luona Chen , Guangmei Yang , Xibo Pei , Qianbing Wan , Jian Wang . Drug-loading ZIF-8 for modification of microporous bone scaffold to promote vascularized bone regeneration. Chinese Chemical Letters, 2024, 35(6): 108889-. doi: 10.1016/j.cclet.2023.108889
12. [12]
  Bei Li , Zhaoke Zheng . In situ monitoring of the spatial distribution of oxygen vacancies at the single-particle level. Chinese Journal of Structural Chemistry, 2024, 43(10): 100331-100331. doi: 10.1016/j.cjsc.2024.100331
13. [13]
  Yixin Zhang , Ting Wang , Jixiang Zhang , Pengyu Lu , Neng Shi , Liqiang Zhang , Weiran Zhu , Nongyue He . Formation mechanism for stable system of nanoparticle/protein corona and phospholipid membrane. Chinese Chemical Letters, 2024, 35(4): 108619-. doi: 10.1016/j.cclet.2023.108619
14. [14]
  Fan Wu , Wenchang Tian , Jin Liu , Qiuting Zhang , YanHui Zhong , Zian Lin . Core-Shell Structured Covalent Organic Framework-Coated Silica Microspheres as Mixed-Mode Stationary Phase for High Performance Liquid Chromatography. University Chemistry, 2024, 39(11): 319-326. doi: 10.12461/PKU.DXHX202403031
15. [15]
  Yixuan Wang , Jiexin Li , Zhihao Shang , Chengcheng Feng , Jianmin Gu , Maosheng Ye , Ran Zhao , Danna Liu , Jingxin Meng , Shutao Wang . Wettability-driven synergistic resistance of scale and oil on robust superamphiphobic coating. Chinese Chemical Letters, 2024, 35(7): 109623-. doi: 10.1016/j.cclet.2024.109623
16. [16]
  Qinming Wu , Xiangju Meng . New zeolites with extra-stable extra-large-pore. Chinese Journal of Structural Chemistry, 2024, 43(6): 100310-100310. doi: 10.1016/j.cjsc.2024.100310
17. [17]
  Mengjuan Sun , Muye Zhou , Yifang Xiao , Hailei Tang , Jinhua Chen , Ruitao Zhang , Chunjiayu Li , Qi Ya , Qian Chen , Jiasheng Tu , Qiyue Wang , Chunmeng Sun . Reversibly size-switchable polyion complex micelles for antiangiogenic cancer therapy. Chinese Chemical Letters, 2024, 35(7): 109110-. doi: 10.1016/j.cclet.2023.109110
18. [18]
  Kexin Yuan , Yulei Liu , Haoran Feng , Yi Liu , Jun Cheng , Beiyang Luo , Qinglian Wu , Xinyu Zhang , Ying Wang , Xian Bao , Wanqian Guo , Jun Ma . Unlocking the potential of thin-film composite reverse osmosis membrane performance: Insights from mass transfer modeling. Chinese Chemical Letters, 2024, 35(5): 109022-. doi: 10.1016/j.cclet.2023.109022
19. [19]
  Lingna Wang , Chenxin Tian , Ruobin Dai , Zhiwei Wang . Eco-friendly regeneration of end-of-life PVDF membrane with triethyl phosphate: Efficiency and mechanism. Chinese Chemical Letters, 2024, 35(9): 109356-. doi: 10.1016/j.cclet.2023.109356
20. [20]
  Changle Liu , Mingyuzhi Sun , Haoran Zhang , Xiqian Cao , Yuqing Li , Yingtang Zhou . All in one doubly pillared MXene membrane for excellent oil/water separation, pollutant removal, and anti-fouling performance. Chinese Journal of Structural Chemistry, 2024, 43(8): 100355-100355. doi: 10.1016/j.cjsc.2024.100355

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(687)
HTML views(31)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Effect of Fumed SiO2 on Pore Formation Mechanism and Various Performances of β-iPP Microporous Membrane Used for Lithium-ion Battery Separator

Metrics

通讯作者: 陈斌, bchen63@163.com

Effect of Fumed SiO₂ on Pore Formation Mechanism and Various Performances of β-iPP Microporous Membrane Used for Lithium-ion Battery Separator