Fast Li-ion transport and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high performance Li metal battery

doi:10.1016/j.ensm.2020.07.037

	Fast Li-ion transport and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high performance Li metal battery
	Wen, Kaihua 1,3; Tan, Xin 3; Chen, Tianhua 2; Chen, Shimou 3; Zhang, Suojiang 3
刊名	ENERGY STORAGE MATERIALS
	2020-11-01
卷号	32 页码:55-64
关键词	Poly (vinylethylene carbonate) Polymer electrolyte Double-layered Stability Lithium metal battery
ISSN号	2405-8297
DOI	10.1016/j.ensm.2020.07.037
英文摘要	Polymer-based lithium metal batteries are considered to be one of the most promising Li-based energy storage systems for portable devices and flexible technologies. However, low ionic conductivity of polymer electrolytes and poor compatibility in electrode-electrolyte interfaces restrict the wide applications of polymer-based lithium metal batteries. Here we report a novel polycarbonate-polyethylene oxide based polymer electrolyte with a double layered structure to achieve fast Li-ion conduction and uniform Li-ion flux. Comprehensive experiments and simulations show the ion-dipolar pair of [C=O center dot center dot center dot Li+] is the main reason for Li+ conduction, and the balances of coupling/decoupling in Li+center dot center dot center dot TESI- and Li+center dot center dot center dot PAN/PVEC synergistically facilitate a fast Li+ transport on the cathode side, which results in high Li+ transference number (0.602) and high ionic conductivity (1.56 x 10(-4) S cm(-1), 20 degrees C) of DLPE. Besides, uniform Li+ flux in PEGDMA-SiO2-Pyr(14)TSFI achieves stable Li/electrolyte interface rich in LiF and Li3N on the anode side. Benefit from this design, the DLPE-based LiFePO4 and LiNi0.8Co0.1Mn0.1O2 battery deliver high safety and high stable performances under various extreme conditions.
资助项目	National Key Projects for Fundamental Research and Development of China[2016YFB0100104] ; National Natural Science Foundation of China[51922099] ; National Natural Science Foundation of China[21890762]
WOS关键词	SOLID-STATE ; LITHIUM BATTERIES ; LIQUID ; SUCCINONITRILE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000577179100007
资助机构	National Key Projects for Fundamental Research and Development of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42484]
专题	中国科学院过程工程研究所
通讯作者	Chen, Shimou
作者单位	1.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 2.Univ Adelaide, Sch Chem Engn & Adv Mat, Adelaide, SA 5005, Australia 3.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wen, Kaihua,Tan, Xin,Chen, Tianhua,et al. Fast Li-ion transport and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high performance Li metal battery[J]. ENERGY STORAGE MATERIALS,2020,32:55-64.
APA	Wen, Kaihua,Tan, Xin,Chen, Tianhua,Chen, Shimou,&Zhang, Suojiang.(2020).Fast Li-ion transport and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high performance Li metal battery.ENERGY STORAGE MATERIALS,32,55-64.
MLA	Wen, Kaihua,et al."Fast Li-ion transport and uniform Li-ion flux enabled by a double-layered polymer electrolyte for high performance Li metal battery".ENERGY STORAGE MATERIALS 32(2020):55-64.