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001     904181
005     20240712112827.0
024 7 _ |a 10.1016/j.mtcomm.2021.102133
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037 _ _ |a FZJ-2021-05751
082 _ _ |a 620
100 1 _ |a Zhou, Lei
|0 P:(DE-Juel1)172962
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245 _ _ |a Enhanced sulfur utilization in lithium-sulfur batteries by hybrid modified separators
260 _ _ |a Amsterdam [u.a.]
|c 2021
|b Elsevier
336 7 _ |a article
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520 _ _ |a The extraordinary energy density and low cost enable lithium-sulfur (Li-S) batteries to be a promising alternative to traditional energy storage systems. The principal hurdle facing Li-S batteries is the unsatisfactory utilization of sulfur cathodes. The detrimental shuttle issue of polysulfides and the sluggish charge transfer kinetics result in quick capacity degradation of Li-S batteries. An MFLC hybrid material composed of manganese-iron layered double hydroxides (Mn-Fe LDH) and carbon nanotubes (CNT) has been developed. Such heterostructure combines the advantages of effective chemical bonding of Mn-Fe LDH towards polysulfides with the high conductivity of CNT. When modified on a polypropylene (PP) separator, the hybrid material is proven to significantly inhibit the shuttle issue of polysulfides and accelerate their redox reaction kinetics. Li-S batteries with MFLC-modified separators revealed considerably improved electrochemical performance. A high initial capacity of 1138 mA h g−1 and 70 % capacity retention after 200 cycles were achieved at 0.2 C. The enhanced sulfur utilization can be directly evaluated from the discharge voltage plateaus. The results indicate a new solution for the practical application of Li-S batteries and provide a simple approach to determine the efficiency of sulfur utilization.
536 _ _ |a 1223 - Batteries in Application (POF4-122)
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700 1 _ |a Li, Hao
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700 1 _ |a Zhang, Yue
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700 1 _ |a Jiang, Ming
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700 1 _ |a Danilov, Dmitri L.
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700 1 _ |a Eichel, Rüdiger-A.
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700 1 _ |a Notten, Peter H. L.
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773 _ _ |a 10.1016/j.mtcomm.2021.102133
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|v 26
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|x 2352-4928
856 4 _ |u https://juser.fz-juelich.de/record/904181/files/1-s2.0-S2352492821001252-main.pdf
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910 1 _ |a Eindhoven University of Technology
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