气候变化领域集成服务门户(CCPortal): Titanium-oxo cluster reinforced gel polymer electrolyte enabling lithium-sulfur batteries with high gravimetric energy densities

CCPortal

DOI	10.1039/d0ee03005h
	Titanium-oxo cluster reinforced gel polymer electrolyte enabling lithium-sulfur batteries with high gravimetric energy densities
	Pei F.; Dai S.; Guo B.; Xie H.; Zhao C.; Cui J.; Fang X.; Chen C.; Zheng N.
发表日期	2021
ISSN	17545692
起始页码	975
结束页码	985
卷号	14 期号:2
英文摘要	Lithium-sulfur (Li-S) battery research has flourished by upgrading the performances of sulfur cathodes and Li metal anodes under flooded electrolyte conditions. However, since high gravimetric energy density can only be achieved at a low electrolyte/sulfur (E/S) ratio, the severe performance degradation under lean electrolyte conditions is becoming a bottleneck in the development of Li-S batteries. Here we propose a new class of gel polymer electrolytes by using titanium-oxo clusters as reinforcements to construct low E/S batteries. The developed electrolyte has favorable mechanical properties and high Li-ion conductivity, as well as excellent capabilities to block polysulfide shuttling and suppress Li dendrite formation, enabling low E/S batteries to exhibit enhanced capacities and cycling stabilities. Remarkably, the low E/S (3 μL mgS-1) battery fabricated with high sulfur loading (10 mgS cm-2) and low negative/positive capacity ratio (1/1) can deliver a gravimetric energy density of 423 W h kg-1 and continue to operate for 100 cycles. This study provides a new avenue for high-energy-density Li-S batteries. © The Royal Society of Chemistry.
英文关键词	Electrodes; Lithium compounds; Lithium-ion batteries; Polyelectrolytes; Reinforcement; Sulfur compounds; Titanium; Dendrite formation; Electrolyte conditions; Gel polymer electrolytes; Gravimetric energy densities; High energy densities; Li ion conductivities; Performance degradation; Titanium-oxo-clusters; Lithium sulfur batteries; concentration (composition); detection method; electrode; electrolyte; electronic equipment; equipment; performance assessment; polymer
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190782
作者单位	Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National and Local Joint Engineering Research Center for Preparation Technology of Nanomaterials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen Fujian, 361005, China; Fujian Science and Technology Innovation Laboratory for Energy Materials of China, Xiamen Fujian, 361005, China; Cas Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Pei F.,Dai S.,Guo B.,et al. Titanium-oxo cluster reinforced gel polymer electrolyte enabling lithium-sulfur batteries with high gravimetric energy densities[J],2021,14(2).
APA	Pei F..,Dai S..,Guo B..,Xie H..,Zhao C..,...&Zheng N..(2021).Titanium-oxo cluster reinforced gel polymer electrolyte enabling lithium-sulfur batteries with high gravimetric energy densities.Energy & Environmental Science,14(2).
MLA	Pei F.,et al."Titanium-oxo cluster reinforced gel polymer electrolyte enabling lithium-sulfur batteries with high gravimetric energy densities".Energy & Environmental Science 14.2(2021).