题目：Curvature-regulated sulfur electrochemistry for robust low-temperature Li-S batteries 

作者： Zhubing Xiao,*(肖助兵) Jian Fang, Hui Ge, Hui Gao,*(高慧) Lu Wang*

单位：^aKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Anhui Provincial Key Laboratory of Synthetic Chemistry and Applications, College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui, China.

^bSchool of Materials Science and Engineering, Shandong University, Jinan 250061, Shandong, China.

摘要：Low-temperature Li-S batteries have attracted increasing attention, but lithium polysulfide (LiPSs) clustering and tardy ionic mobility have been challenging issues, which could be exacerbated under high sulfur loading and lean electrolyte. Here, three-dimensional Ti₃C₂ micro-cages (TCCs) with an interfacial structure modulated by rich curvatures have been fabricated, to propel the sulfur electrochemistry at subzero temperatures. Spectroscopic/microscopic analyses and theoretical calculations elucidate that precipitation of ultrafine Ti-metal particles on the in-situ generated Ti₃C₂ nanoribbons could trigger the self-scrolling of Ti₃C₂ nanoribbons into TCCs. Moreover, in-situ ultraviolet-visible spectra collected at low temperature and theoretical calculations verified that the TCC regulated by rich curvatures have effectively alleviated the Li⁺dissociation barrier, reduced the energy barrier for charge transfer on the electrode-electrolyte interface and restrained the clustering and shuttling of LiPSs, thus accelerating the electrochemical conversion kinetics of sulfur species at low temperatures. And the carbon-free TCC-S cathodes (sulfur loading of 3.0 mgs cm^-2) could harvest a specific capacity of 1086 mAh g^-1and operate for 100 cycles at -10 °C; and a capacity of 811 and 455 mAh g^-1can be delivered at -20 and -40 °C, respectively, and operate for up-to 100 cycles, even with a lean electrolyte 6.5 μl mg^-1.

影响因子：14

分区情况：一区

年、卷、页：2025, 105, 461-469.

链接：www.sciencedirect.com/science/article/abs/pii/S2095495625001378

(文、图:肖助兵 / 审核:韩满意 / 审校:曹静 / 终审:杨振兴)