Metal–Organic Framework-Based Separators for Enhancing Li–S Battery Stability: Mechanism of Mitigating Polysulfide Diffusion
Type
ArticleAuthors
Li, Mengliu
Wan, Yi

Huang, Jing-Kai
Assen, Ayalew Hussen Assen
Hsiung, Chia-En
Jiang, Hao

Han, Yu

Eddaoudi, Mohamed

Lai, Zhiping

Ming, Jun

Li, Lain-Jong

KAUST Department
Advanced Membranes and Porous Materials Research CenterChemical Engineering Program
Chemical Science Program
Functional Materials Design, Discovery and Development (FMD3)
KAUST Catalysis Center (KCC)
Material Science and Engineering Program
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Date
2017-09-15Online Publication Date
2017-09-15Print Publication Date
2017-10-13Permanent link to this record
http://hdl.handle.net/10754/625769
Metadata
Show full item recordAbstract
The shuttling effect of polysulfides severely hinders the cycle performance and commercialization of Li–S batteries, and significant efforts have been devoted to searching for feasible solutions to mitigate the effect in the past two decades. Recently, metal–organic frameworks (MOFs) with rich porosity, nanometer cavity sizes, and high surface areas have been claimed to be effective in suppressing polysulfide migration. However, the formation of large-scale and grain boundary-free MOFs is still very challenging, where a large number of grain boundaries of MOF particles may also allow the diffusion of polysulfides. Hence, it is still controversial whether the pores in MOFs or the grain boundaries play the critical role. In this study, we perform a comparative study for several commonly used MOFs, and our experimental results and analysis prove that a layer of MOFs on a separator did enhance the capacity stability. Our results suggest that the chemical stability and the aggregation (packing) morphology of MOF particles play more important roles than the internal cavity size in MOFs.Citation
Li M, Wan Y, Huang J-K, Assen AH, Hsiung C-E, et al. (2017) Metal–Organic Framework-Based Separators for Enhancing Li–S Battery Stability: Mechanism of Mitigating Polysulfide Diffusion. ACS Energy Letters: 2362–2367. Available: http://dx.doi.org/10.1021/acsenergylett.7b00692.Sponsors
The authors acknowledge the support from King Abdullah University of Science and Technology (KAUST).Publisher
American Chemical Society (ACS)Journal
ACS Energy LettersAdditional Links
http://pubs.acs.org/doi/full/10.1021/acsenergylett.7b00692ae974a485f413a2113503eed53cd6c53
10.1021/acsenergylett.7b00692