聚酰亚胺粘结剂对锂离子电池用硅碳复合材料循环性能的影响
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摘要
如何通过粘结剂有效抑制硅碳复合材料的体积膨胀一直是锂离子电池行业的研究热点。本文针对传统聚偏氟乙烯(PVDF)树脂无法有效抑制硅基复合材料体积膨胀的问题,利用高强度的改性聚酰亚胺树脂作为硅碳复合材料的粘结剂,通过不同基团的有效引入对电池性能进行提升。结果表明:使用聚酰亚胺类树脂作为硅碳复合材料的粘结剂时,可明显提高硅碳复合材料的循环性能,而采用具有羟基基团的PI-3聚酰亚胺树脂作为粘结剂时,硅碳复合材料的性能最佳。
How to inhibit the volume expansion of silicon-carbon anode materials by binders has been a research hotspot in lithium-ion battery industry. Aiming at the problem that PVDF cannot effectively inhibit the volume expansion of silicon-based anode materials, a modified polyimide(PI) resin with high strength was prepared and used as the binder of silicon-carbon materials, and then the PI molecule was introduced different groups to improve the performance of battery. The results show that the cycling performance of silicon-carbon materials is improved obviously using polyimide resin as binder. When the PI-3 polyimide resin with hydroxyl group is used as binder, the cycling performance of silicon-carbon materials is the best.
How to inhibit the volume expansion of silicon-carbon anode materials by binders has been a research hotspot in lithium-ion battery industry. Aiming at the problem that PVDF cannot effectively inhibit the volume expansion of silicon-based anode materials, a modified polyimide(PI) resin with high strength was prepared and used as the binder of silicon-carbon materials, and then the PI molecule was introduced different groups to improve the performance of battery. The results show that the cycling performance of silicon-carbon materials is improved obviously using polyimide resin as binder. When the PI-3 polyimide resin with hydroxyl group is used as binder, the cycling performance of silicon-carbon materials is the best.
引文
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[8]崔永丽,张仲华,江利,等.聚酰亚胺的性能及应用[J].塑料科技,2005(3):50-53.
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[11]张艺,郑雪菲,牛新星,等.含硫醚结构联苯型聚酰亚胺的合成及结构性能表征[J].中山大学学报(自然科学版),2010,49(4):71-76.
[12]苏骁驰,曹雪峰,鲁云华,等.ODPA/ODA/BAHPP含羟基共聚聚酰亚胺的合成与性能研究[J].绝缘材料,2017,50(4):7-11,15.
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[14]MCDOWELL M T,CUI Y.Single nanostructure electrochemical devices for studying electronic properties and structural changes in lithiated Si nanowires[J].Advanced Energy Materials,2011,1(5):894-900.
[15]岳丽萍,韩鹏献,姚建华,等.锂离子电池硅基负极粘结剂研究进展[J].电池工业,2017,21(1):31-44.
[16]武兆辉,杨娟玉,闫坤,等.锂离子电池硅基负极用聚合物粘结剂的研究进展[J].稀有金属,2016,40(8):838-849.
[17]高欣,虞鑫海,徐永芬,等.聚硫醚酰亚胺薄膜的制备与性能研究[J].绝缘材料,2009,42(2):17-25.
[2]锂离子电池负极材料的水热法制备及其电化学性能[D].杭州:浙江大学,2009.
[3]刘晶晶.用于锂电池负极的多孔硅材料的制备与优化[D].厦门:厦门大学,2013.
[4]ZHANG X W,PATIL P K,WANG C,et al.Electrochemical performance of lithium ion battery,nano-silicon-based,disordered carbon composite anodes with different microstructures[J].Journal of Power Sources,2004,125(2):206-213.
[5]CUI L F,HU L,CHOI J W,et al.Light-weight free-standing carbon nanotube-silicon films for anodes of lithium ion batteries[J].ACS Nano,2010,4(7):3671-3678.
[6]刘一志.POSS/PVDF材料的制备及其力学性能的表征[D].哈尔滨:哈尔滨工业大学,2009.
[7]王晕.PVDF粘结剂在锂离子电池中的应用研究[D].上海:复旦大学,2013.
[8]崔永丽,张仲华,江利,等.聚酰亚胺的性能及应用[J].塑料科技,2005(3):50-53.
[9]张亚飞.氨基化氧化石墨烯/聚酰亚胺复合胶粘剂的原位制备与性能研究[D].上海:东华大学,2016.
[10]KIM J S,CHOI W,CHO K Y,et al.Effect of polyimide binder on electrochemical characteristics of surface-modified silicon anode for lithium ion batteries[J].Journal of Power Sources,2013,244(4):521-526.
[11]张艺,郑雪菲,牛新星,等.含硫醚结构联苯型聚酰亚胺的合成及结构性能表征[J].中山大学学报(自然科学版),2010,49(4):71-76.
[12]苏骁驰,曹雪峰,鲁云华,等.ODPA/ODA/BAHPP含羟基共聚聚酰亚胺的合成与性能研究[J].绝缘材料,2017,50(4):7-11,15.
[13]WU H,CUI Y.Designing nanostructured Si anodes for high energy lithium ion batteries[J].Nano Today,2012,7(5):414-429.
[14]MCDOWELL M T,CUI Y.Single nanostructure electrochemical devices for studying electronic properties and structural changes in lithiated Si nanowires[J].Advanced Energy Materials,2011,1(5):894-900.
[15]岳丽萍,韩鹏献,姚建华,等.锂离子电池硅基负极粘结剂研究进展[J].电池工业,2017,21(1):31-44.
[16]武兆辉,杨娟玉,闫坤,等.锂离子电池硅基负极用聚合物粘结剂的研究进展[J].稀有金属,2016,40(8):838-849.
[17]高欣,虞鑫海,徐永芬,等.聚硫醚酰亚胺薄膜的制备与性能研究[J].绝缘材料,2009,42(2):17-25.