[资源] Jean-Marie Tarascon发表在JACS上的关于 Li-S Batteries

ABSTRACT: Li S rechargeable batteries are attractive for electric transportation because of their low cost, environmentally friendliness, and superior energy density. However, the Li S system has yet to conquer the marketplace, owing to its drawbacks, namely, soluble polysulfide formation. To tackle this issue, we present here a strategy based on the use of a mesoporous chromium trimesate metal organic framework (MOF) named MIL-100(Cr) as host material for sulfur impregnation. Electrodes containing sulfur impregnated within the pores of the MOF were found to show a marked increase in the capacity retention of Li S cathodes. Complementary transmission electron microscopy and X-ray photoelectron spectroscopy measurements demonstrated the reversible capture and release of the polysulfides by the pores of MOF during cycling and evidenced a weak binding between the polysulphides and the oxygenated framework. Such an approach was generalized to other mesoporous oxide structures, such as mesoporous silica, for instance SBA-15, having the same positive effect as theMOFon the capacity retention of Li S cells. Besides pore sizes, the surface activity of the mesoporous additives, as observed for the MOF, appears to also have a pronounced effect on enhancing the cycle performance. Increased knowledge about the interface between polysulfide species and oxide surfaces could lead to novel approaches in the design and fabrication of long cycle life S electrodes 下载地址 http://good.gd/1849280.htm 回帖是美德，下载请回帖

回复此楼

» 收录本帖的淘帖专辑推荐

锂电资源共享

» 猜你喜欢

• 求助，我做的标准曲线横坐标是浓度的lg值，如果我要算检出限的话该怎么算 已经有0人回复
• 交流｜5% SP/NMP 导电浆料预分散经验（钠电 / 锂电用） 已经有1人回复
• 物理化学论文润色/翻译怎么收费? 已经有290人回复
• 2026储能方向博士 已经有3人回复
• 科研工作者面临的几个矛盾，你会怎么选 已经有2人回复
• 阴离子交换膜电解槽电压衰减原因 已经有0人回复
• 铜的植物缓蚀剂研究 已经有1人回复
• 26年电池方向博士申请 已经有2人回复
• 北京工业大学材料科学与工程学院《院士团队》招收工程专业博士研究生 已经有0人回复
• 大连工业大学杰青/长江团队-生物质材料-储能电池方向招收2026级博士生 已经有21人回复
• 储能与电子材料课题组 招收硕士 or 博士研究生——以色列理工-GTIIT联培 已经有19人回复