Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80259
Title: Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries
Authors: Xu, ZL 
Lin, SH 
Onofrio, N 
Zhou, LM 
Shi, FY 
Lu, W 
Kang, K
Zhang, Q
Lau, SP 
Issue Date: 2018
Publisher: Nature Publishing Group
Source: Nature communications, Oct. 2018, v. 9, 4164, p. 1-11 How to cite?
Journal: Nature communicationsonline only 
Abstract: Lithium sulfur batteries with high energy densities are promising next-generation energy storage systems. However, shuttling and sluggish conversion of polysulfides to solid lithium sulfides limit the full utilization of active materials. Physical/chemical confinement is useful for anchoring polysulfides, but not effective for utilizing the blocked intermediates. Here, we employ black phosphorus quantum dots as electrocatalysts to overcome these issues. Both the experimental and theoretical results reveal that black phosphorus quantum dots effectively adsorb and catalyze polysulfide conversion. The activity is attributed to the numerous catalytically active sites on the edges of the quantum dots. In the presence of a small amount of black phosphorus quantum dots, the porous carbon/sulfur cathodes exhibit rapid reaction kinetics and no shuttling of polysulfides, enabling a low capacity fading rate (0.027% per cycle over 1000 cycles) and high areal capacities. Our findings demonstrate application of a metal-free quantum dot catalyst for high energy rechargeable batteries.
URI: http://hdl.handle.net/10397/80259
EISSN: 2041-1723
DOI: 10.1038/s41467-018-06629-9
Rights: Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
© The Author(s) 2018.
The following publication Xu, Z.L., Lin, S.H., Onofrio, N., Zhou, L.M., Shi, F.Y., Lu, W., ... & Lau, S.P. (2018). Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries. Nature communications, 9, 4164, 1-11 is available at https://dx.doi.org/10.1038/s41467-018-06629-9
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