Preparation of Thermal Stable Porous Polyimide Membranes by Phase Inversion Process for Lithium-ion Battery

	Preparation of Thermal Stable Porous Polyimide Membranes by Phase Inversion Process for Lithium-ion Battery
	Wang HJ(王和金); Wang TP(王太鹏); Yang SY(杨士勇); Fan L(范琳)
刊名	polymer
	2013
卷号	54 期号:1 页码:6339-6348
关键词	Porous membrane Organo-soluble polyimide Thermal stability
通讯作者	范琳
产权排序	第一
英文摘要	The porous polyimide membranes were prepared by a wet phase inversion process based on the organosoluble polyimide. The influence of coagulation bath composition and casting polymer solution concentration on the morphology of membranes was investigated. A series of spongy-like porous polyimide membranes with different porosity were obtained and characterized. These porous polyimide membranes exhibited excellent thermal stability and dimensional stability with the glass transition temperature of 274 C and thermal shrinkage less than 1% after stored at 200 C. All the porous polyimide membranes exhibited good wettability with electrolyte uptake of 190e378% due to their high surface polarity and high porosity. The discharge curves for the lithium-ion cells using porous polyimide membranes as separator displayed relatively flatter voltage plateaus than that for Celgard 2400 membrane and gave the discharge capacity of 129e131 mAh/g. The thermal stable porous polyimide membranes are favorable to be applied as separator in the lithium-ion cell and can be expected to provide excellent battery performance at elevated temperature.
学科主题	高分子物理化学
公开日期	2015-10-13
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/27107]
专题	化学研究所_高技术材料实验室
作者单位	中国科学院化学研究所
推荐引用方式 GB/T 7714	Wang HJ,Wang TP,Yang SY,et al. Preparation of Thermal Stable Porous Polyimide Membranes by Phase Inversion Process for Lithium-ion Battery[J]. polymer,2013,54(1):6339-6348.
APA	王和金,王太鹏,杨士勇,&范琳.(2013).Preparation of Thermal Stable Porous Polyimide Membranes by Phase Inversion Process for Lithium-ion Battery.polymer,54(1),6339-6348.
MLA	王和金,et al."Preparation of Thermal Stable Porous Polyimide Membranes by Phase Inversion Process for Lithium-ion Battery".polymer 54.1(2013):6339-6348.