Superior lithium ion conduction of polymer electrolyte with comb-like structure via solvent-free copolymerization for bipolar all-solid-state lithium battery

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	Superior lithium ion conduction of polymer electrolyte with comb-like structure via solvent-free copolymerization for bipolar all-solid-state lithium battery
	Deng, Yonghong; Wei, Zhenyao; Chen, Shaojie; Wang, Junye; Wang, Zhihao; Zhang, Zhihua; Yao, Xiayin; Xu, Xiaoxiong
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2018
卷号	6 期号:27 页码:13438-13447
关键词	Composite Electrolytes Metal Batteries Rechargeable Batteries Dendrite Formation Air Batteries Performance Anode Oxide Temperature Membrane
英文摘要	Here, novel solid polymer electrolytes were synthesized by solvent-free thiol-ene copolymerization with different chain lengths. It was demonstrated that the optimal polymer electrolyte exhibited excellent thermal stability up to 331 degrees C, considerable ionic conductivity of 5.05 x 10(-5) S cm(-1) at ambient temperature, a wide electrochemical window (0-5.05 V) and good compatibility with a lithium metal electrode. In addition, a solid-state monopolar LiFePO4//Li battery with an integrated cathode and electrolyte was assembled and delivered a maximum capacity of 167.39 mA h g(-1), which is close to the theoretical capacity of the LiFePO4 cathode. Moreover, the discharge capacity remained at 122.17 mA h g(-1) after 200 cycles at 60 degrees C, which represents a capacity retention of 75%. Remarkably, the monopolar cell could cycle well at room temperature, with a stabilized discharge capacity of 100 mA h g(-1) at 0.1C in the 60(th) cycle. In particular, taking advantage of the non-fluidity of solid electrolytes, a bipolar cell with a high voltage of 6.07 V was also assembled, which was extremely beneficial for improving the volumetric energy density and decreasing the cost, as well as enhancing the reliability of cell packs. The bipolar cell delivered an initial specific capacity of 136.3 mA h g(-1) with a retention of 76% after 40 cycles. Furthermore, the bipolar cell can work well under conditions of bending, cutting and even penetration by a nail. Consequently, this work provides an advanced strategy for the facile synthesis of polymer electrolytes, as well as the fabrication of bipolar cells with high voltages, which favors improvements in energy density.
学科主题	Engineering
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17302]
专题	2018专题
推荐引用方式 GB/T 7714	Deng, Yonghong,Wei, Zhenyao,Chen, Shaojie,et al. Superior lithium ion conduction of polymer electrolyte with comb-like structure via solvent-free copolymerization for bipolar all-solid-state lithium battery[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(27):13438-13447.
APA	Deng, Yonghong.,Wei, Zhenyao.,Chen, Shaojie.,Wang, Junye.,Wang, Zhihao.,...&Xu, Xiaoxiong.(2018).Superior lithium ion conduction of polymer electrolyte with comb-like structure via solvent-free copolymerization for bipolar all-solid-state lithium battery.JOURNAL OF MATERIALS CHEMISTRY A,6(27),13438-13447.
MLA	Deng, Yonghong,et al."Superior lithium ion conduction of polymer electrolyte with comb-like structure via solvent-free copolymerization for bipolar all-solid-state lithium battery".JOURNAL OF MATERIALS CHEMISTRY A 6.27(2018):13438-13447.