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000904181 1001_ $$0P:(DE-Juel1)172962$$aZhou, Lei$$b0
000904181 245__ $$aEnhanced sulfur utilization in lithium-sulfur batteries by hybrid modified separators
000904181 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2021
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000904181 520__ $$aThe 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.
000904181 536__ $$0G:(DE-HGF)POF4-1223$$a1223 - Batteries in Application (POF4-122)$$cPOF4-122$$fPOF IV$$x0
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000904181 7001_ $$0P:(DE-HGF)0$$aLi, Hao$$b1
000904181 7001_ $$0P:(DE-HGF)0$$aZhang, Yue$$b2
000904181 7001_ $$0P:(DE-Juel1)173744$$aJiang, Ming$$b3$$ufzj
000904181 7001_ $$0P:(DE-Juel1)173719$$aDanilov, Dmitri L.$$b4
000904181 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b5
000904181 7001_ $$0P:(DE-Juel1)165918$$aNotten, Peter H. L.$$b6$$eCorresponding author$$ufzj
000904181 773__ $$0PERI:(DE-600)2829441-5$$a10.1016/j.mtcomm.2021.102133$$gVol. 26, p. 102133 -$$p102133 -$$tMaterials today / Communications$$v26$$x2352-4928$$y2021
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