Fast lithium ion transport in solid polymer electrolytes from polysulfide-bridged copolymers

doi:10.1016/j.nanoen.2020.104976

IMR OpenIR

	Fast lithium ion transport in solid polymer electrolytes from polysulfide-bridged copolymers
	Sun, Chengguo; Wang, Zhenxing; Yin, Lichang; Xu, Shengjun; Ghazi, Zahid Ali; Shi, Ying; An, Baigang; Sun, Zhenhua; Cheng, Hui-Ming; Li, Feng
	2020-09-01
Source Publication	NANO ENERGY
Volume	75
Abstract	Solid polymer electrolytes (SPEs) are being intensively pursued as a means to develop safe, stable and long-life Li-ion batteries. However, the low Li+ conductivity and transference number in SPEs still impede all-solid-state polymer batteries from practical commercialization. Here, lithium polysulfides that cause a shuttle effect problem in Li-S batteries are reduced on a Poly(ethylene oxide) (PEO) chain as an effective way to stimulate Li+ transport. It is shown that the product of the reduction (main -S4Li) dramatically increases Li+ transport while forming a strong interaction with the PEO matrix through intermolecular interactions. In contrast to PEO electrolytes, the -S4Li grafted electrolyte membranes have a lithium transfer number almost 3 times higher, and the LiFePO4 vertical bar ScPEO vertical bar Li cell shows an ultra-long cycle life exceeding 1200 cycles with a capacity decay of 0.024% per cycle at 1 C. The results reveal lithium polysulfides tremendous potential in a solid-state electrolyte system for improving the ion transport and cycling stability.
DOI	10.1016/j.nanoen.2020.104976
WOS ID	WOS:000560730400005
Citation statistics
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82575
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Sun, Chengguo,Wang, Zhenxing,Yin, Lichang,et al. Fast lithium ion transport in solid polymer electrolytes from polysulfide-bridged copolymers[J]. NANO ENERGY,2020,75.
APA	Sun, Chengguo.,Wang, Zhenxing.,Yin, Lichang.,Xu, Shengjun.,Ghazi, Zahid Ali.,...&Li, Feng.(2020).Fast lithium ion transport in solid polymer electrolytes from polysulfide-bridged copolymers.NANO ENERGY,75.
MLA	Sun, Chengguo,et al."Fast lithium ion transport in solid polymer electrolytes from polysulfide-bridged copolymers".NANO ENERGY 75(2020).

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