%0 Journal Article
%A Chen, Chunguang
%A Li, Dongjiang
%A Gao, Lu
%A Harks, Peter Paul R. M. L.
%A Eichel, Rüdiger-A.
%A Notten, Peter H. L.
%T Carbon-coated core–shell Li 2 S@C nanocomposites as high performance cathode materials for lithium–sulfur batteries
%J Journal of materials chemistry / A
%V 5
%N 4
%@ 2050-7496
%C London [u.a.]
%I RSC
%M FZJ-2017-01817
%P 1428 - 1433
%D 2017
%X Li2S has made the concept of Li–S batteries much more promising due to the relatively high storage capacity, the possibility of using Li-free anodes and the increase of microstructural stability. However, similar to S, Li2S also suffers from an insulating nature and polysulfide dissolution problem. The results presented here show a facile and cost-effective approach by using a plasma sparking and chemical sulfurization process to synthesize core–shell Li2S@C nanocomposites. The nanocomposites show a significantly reduced particle size and well-developed core–shell architecture, effectively shortening the Li-ion diffusion distance, enhancing the electronic conductivity and suppressing the dissolution losses of polysulfides. As a result, a much improved rate and cycling performance has been achieved. The method presented in this study offers good opportunities for scaling up the production of high performance cathode materials in a simple and low-cost way to be applied in future generation Li–S batteries.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000395072800011
%R 10.1039/C6TA09146F
%U https://juser.fz-juelich.de/record/827705