Inorganic Chemicals Industry >
Study on chemically crosslinked polyimide separators for lithium-ion batteries with enhanced performance
Received date: 2021-06-28
Online published: 2021-11-15
As an important part of lithium-ion batteries,separators are used to block the direct contact between cathode and anode and provide an effective channel for lithium ion transmission between electrodes.Polyimide separators have been wide-ly concerned because of their long charge-discharge cycle life,moderate mechanical strength,good electrical insulation and self extinguishing ability.Polyimide separators were chemically crosslinked by using p-dimethylamine as crosslinking agent,the structure-activity relationship between the crosslinking time and the morphology,structure and properties of separators was studied.With the increase of crosslinking time,the porosity and liquid absorption rate of separators decreased,and the contact angle of the electrolyte and mechanical strength increased gradually.Electrochemical tests showed that with the increase of crosslinking time,the bulk impedance of separators increased gradually and the ionic conductivity decreased gradu-ally.The interfacial resistance of crosslinked separators was much lower than that of uncrosslinked separators,and the electro chemical window of crosslinked separators was also broader than that of uncrosslinked separators.The test result of assembling half cell showed that the rate performance and cycle performance of battery assembled by crosslinked separators were better than those of uncrosslinked separators.When the crosslinking time was 48 h,the performance of battery was best.After 100 charge-discharge cycles,the specific discharge capacity was 130.2 mA·h/g and the capacity retention rate was 91.1%.
Key words： lithium-ion battery; polyimide; separators; crosslinked
Biao YUAN , Yake SHI , Zan CHEN . Study on chemically crosslinked polyimide separators for lithium-ion batteries with enhanced performance[J]. Inorganic Chemicals Industry, 2021 , 53(11) : 42 -48 . DOI: 10.19964/j.issn.1006-4990.2021-0389
| [1] | 杨永钰, 高婷婷, 田朋, 等. 无机超细粉体改性锂离子电池隔膜的研究进展[J]. 无机盐工业, 2021, 53(6):49-58. |
| [2] | 孙新华, 侯雷, 秦凯. 锂离子电池电解质六氟磷酸锂市场分析[J]. 无机盐工业, 2021, 53(3):7-11. |
| [3] | 李卫, 田文怀, 其鲁. 锂离子电池正极材料技术研究进展[J]. 无机盐工业, 2015, 47(6):1-5. |
| [4] | 孙培亮, 孙新华, 陈世娟, 等. 锂离子动力电池用二氟磷酸锂的制备研究[J]. 无机盐工业, 2019, 51(1):39-42. |
| [5] | LAGADEC M F, ZAHN R and WOOD V. Characterization and per-formance evaluation of lithium-ion battery separators[J]. Nature En-ergy, 2019, 4(1):16-25. |
| [6] | ETACHERI V, MAROM R, ELAZARI R, et al. Challenges in the development of advanced Li-ion batteries:A review[J]. Energy Envi-ronmental Science, 2011, 4(9):3243-3262. |
| [7] | CHENG F, LIANG J, TAO Z, et al. Functional materials for rechar-geable batteries[J]. Advanced Materials, 2011, 23(15):1695-1715. |
| [8] | RYOU M H, LEE Y M, PARK J K, et al. Mussel-inspired polydopa-mine-treated polyethylene separators for high-power Li-ion batte-ries[J]. Advanced Materials, 2011, 23(27):3066-3070. |
| [9] | WANG L, DENG N, JU J, et al. A novel core-shell structured poly-m-phenyleneisophthalamide@polyvinylidene fluoride nanofiber membrane for lithium ion batteries with high-safety and stable elec-trochemical performance[J]. Electrochimica Acta, 2019, 300:263-273. |
| [10] | ZHAO H, KANG W, DENG N, et al. A fresh hierarchical-structure gel poly-m-phenyleneisophthalamide nanofiber separator assisted by electronegative nanoclay-filler towards high-performance and advanced-safety lithium-ion battery[J]. Chemical Engineering Jo-urnal, 2020, 384.Doi: 10.1016/j.cej.2019.123312. |
| [11] | XU H, LI D, LIU Y, et al. Preparation of halloysite/polyvinylidene fluoride composite membrane by phase inversion method for lithi-um ion battery[J]. Journal of Alloys Compounds, 2019, 790:305-315. |
| [12] | SHI X, SUN Q, BOATENG B, et al. A quasi-solid composite sepa-rator with high ductility for safe and high-performance lithium-ion batteries[J]. Journal of Power Sources, 2019, 414:225-232. |
| [13] | ZHANG S, ERVIN M, XU K, et al. Microporous poly(acrylonitrile-methyl methacrylate) membrane as a separator of rechargeable li-thium battery[J]. Electrochimica Acta, 2004, 49(20):3339-3345. |
| [14] | l′ABEE R, DAROSA F, ARMSTRONG M J, et al. High tempera-ture stable Li-ion battery separators based on polyetherimides with improved electrolyte compatibility[J]. Journal of Power Sources, 2017, 345:202-211. |
| [15] | ZHANG H, LIN C E, ZHOU M Y, et al. High thermal resistance polyimide separators prepared via soluble precusor and non-solvent induced phase separation process for lithium ion batteries[J]. Ele-ctrochimica Acta, 2016, 187:125-133. |
| [16] | ZHANG H, ZHANG Y, YAO Z, et al. Novel configuration of polyi-mide matrix-enhanced cross-linked gel separator for high perfor-mance lithium ion batteries[J]. Electrochimica Acta, 2016, 204:176-182. |
| [17] | WANG Y, WANG S, FANG J, et al. A nano-silica modified polyi-mide nanofiber separator with enhanced thermal and wetting prop-erties for high safety lithium-ion batteries[J]. Journal of Membrane Science, 2017, 537:248-254. |
| [18] | YAN X, WANG Y, YU T, et al. Polyimide binder by combining with polyimide separator for enhancing the electrochemical performance of lithium ion batteries[J]. Electrochimica Acta, 2016, 216:1-7. |
| [19] | SMITH S A, WILLIAMS B P, JOO Y L. Effect of polymer and ceramic morphology on the material and electrochemical properties of electrospun PAN/polymer derived ceramic composite nanofiber membranes for lithium ion battery separators[J]. Journal of Mem-brane Science, 2017, 526:315-322. |
| [20] | SHI J, HU H, XIA Y, et al. Polyimide matrix-enhanced cross-linked gel separator with three-dimensional heat-resistance skeleton for high-safety and high-power lithium ion batteries[J]. Journal of Materials Chemistry A, 2014, 2(24):9134-9141. |
| [21] | CHUNG T S, SHAO L and TIN P S. Surface modification of polyi-mide membranes by diamines for H2 and CO2 separation[J]. Macro-molecular Rapid Communications, 2006, 27(13):998-1003. |
| [22] | CHOI S H, JANSEN J C, TASSELLI F, et al. In-line formation of chemically cross-linked P84® co-polyimide hollow fibre membr-anes for H2/CO2 separation[J]. Separation Purification Technology, 2010, 76(2):132-139. |
| [23] | AHMAD M Z, PELLETIER H, MARTIN-GIL V, et al. Chemical crosslinking of 6FDA-ODA and 6FDA-ODA:DABA for improved CO2/CH4 separation[J]. Membranes, 2018, 8(3).Doi: 10.3390/mem-branes8030067. |
| [24] | MANGINDAAN D W, WOON N M, SHI G M, et al. P84 polyimide membranes modified by a tripodal amine for enhanced pervapora-tion dehydration of acetone[J]. Chemical Engineering Science, 2015, 122:14-23. |
| [25] | XU S, LIU L and WANG Y. Network cross-linking of polyimide membranes for pervaporation dehydration[J]. Separation Purifica-tion Technology, 2017, 185:215-226. |
| [26] | 戚律, 周元冲, 徐荣, 等. P84 共聚聚酰亚胺-聚乙烯吡咯烷酮/聚丙烯腈复合膜的制备及其渗透汽化分离甲醇/四氢呋喃[J]. 化工进展, 2019, 38(2):971-978. |
| [27] | 曹敏, 聚酰亚胺纳滤膜的交联改性及其用于润滑油溶剂回收研究[D]. 青岛:中国石油大学 （华东）, 2013. |
| [28] | 张永玲, 乙二胺改性聚酰亚胺纳滤膜的制备和耐溶剂性能研究[D]. 哈尔滨:哈尔滨工业大学, 2014. |
| [29] | 徐艳超, 新型聚酰亚胺基耐溶剂纳滤膜的构筑及其分离性能研究[D]. 哈尔滨:哈尔滨工业大学, 2018. |
| [30] | YURIAR-ARREDONDO K, ARMSTRONG M R, SHAN B, et al. Nanofiber-based Matrimid organogel membranes for battery separator[J]. Journal of Membrane Science, 2018, 546:158-164. |
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