کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1287857 1497997 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon coated lithium sulfide particles for lithium battery cathodes
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Carbon coated lithium sulfide particles for lithium battery cathodes
چکیده انگلیسی

In this paper, we investigated the properties of carbon coated lithium sulfide particles prepared following either a dry coating process or a wet coating process, using, respectively, sucrose or polyacrylonitrile (PAN) as carbon source. X-ray diffraction analysis revealed that the crystalline structure of the pristine Li2S was basically preserved upon both coating processes. The dry coating process (Li2S-Csucrose) resulted in Li2S particles covered only partially by smaller carbon particles, whereas the wet coating method (Li2S-CPAN) gave Li2S particles, homogenously decorated with thin carbon flakes. As a result, the cycling performance of Li2S-C based electrodes was significantly improved, particularly for Li2S-CPAN, for which a coulombic efficiency of more than 99.5% was obtained.


► Encapsulated lithium sulfide as cathode material for lithium sulfur batteries.
► Prevention of polysulfide dissolution by carbon encapsulation of lithium sulfide particles.
► High coulombic efficiencies (>99.5%) and stable cycling performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 235, 1 August 2013, Pages 220–225
نویسندگان
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