Utilizing a metal as a sulfur host for high performance Li-S batteries

Journal Article · Wed Aug 01 00:00:00 EDT 2018 · Nano Energy

DOI:https://doi.org/10.1016/j.nanoen.2018.06.011· OSTI ID:1462714

Liu, Xiao-Chen; Zhou, Sophia P.; Liu, Miao; Xu, Gui-Liang; Zhou, Xiao-Dong; Huang, Ling; Sun, Shi-Gang; Amine, Khalil; Ke, Fu-Sheng

Molybdenum, for the first time, was used as a new type of sulfur host for lithium-sulfur batteries and exhibited outstanding electrochemical performance, even over traditional porous carbon hosts. A Mo-S composite, with 80 wt% sulfur loading, delivered reversible capacities of 1003 mAh g(-1) after 130 cycles at 0.1 C, and 786 mAh g(-1) after 100 cycles at 5.0 C. Further analysis using in situ X-ray diffraction, cyclic voltammetry, and density functional theory calculations demonstrated that the Mo surface can not only effectively trap polysulfides, but also catalytically decompose polysulfides and Li2S.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE) - Office of Vehicle Technology - Battery Materials Research (BMR) Program; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities; National Science Foundation (NSF)
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1462714
• Journal Information: Nano Energy, Vol. 50, Issue C; ISSN 2211-2855
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

in situ XRD
lithium-sulfur batteries
molybdenum
sulfur host