期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 25, 页码 12934-12942出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta03699j
关键词
-
资金
- National Natural Science Foundation of China [51677170, 21403196, 51572240]
- Natural Science Foundation of Zhejiang Province [LR13E020002, LY16E070004, LY15B030003]
- Scientific Research Foundation of Zhejiang Provincial Education Department [Y201432424]
- Ford Motor Company
Recently, great attention has been paid to all-solid-state lithium-sulfur (Li-S) batteries for their high energy density and security. But large-scale application of this technology is hindered by the poor ionic conductivity of solid-state electrolytes and high interfacial resistance at ambient temperature. In addition, seeking an appropriate carbon matrix for solid-state Li-S batteries is challenging. Herein, with the purpose of addressing these problems, N-doped carbon nanosheets (N-CNs) as a matrix for optimizing a sulfur cathode was successfully prepared. Furthermore, we fabricated innovative poly(ethylene oxide) (PEO)-based solid-state polymer electrolytes (SSPEs) containing ionic liquid grafted oxide nanoparticles (IL@NPs), which showed high ionic conductivity at low temperatures. Additionally, the differences among IL@NPs based on ZrO2, TiO2, and SiO2 are compared. The electrolyte with IL@ZrO2 showed the highest ionic conductivity of 4.95 x 10(-4), 2.32 x 10(-4) S cm(-1) at 50 and 37 degrees C, respectively. With advanced and innovative designs in both cathode and electrolyte, our solid-state Li-S battery exhibits improved electrochemical performance. The battery with SSPEs based on IL@ZrO2 delivered a high specific capacity of 986, 600 mA h g(-1) at 50 and 37 degrees C, respectively. It's believed that this strategy, using IL@NPs added SSPEs and the N-CNs/S cathode, may shed light on prospective applications with all-solid-state Li-S batteries.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据