Chemisorption of polysulfides through redox reactions with organic molecules for lithium-sulfur batteries.
Chemisorption of polysulfides through redox reactions with organic molecules for lithium-sulfur batteries.
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通过与有机分子的氧化还原反应化学吸附多硫化物用于锂硫电池
DOI:
10.1038/s41467-018-03116-z
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发表时间:
2018-02-16
影响因子:
16.6
通讯作者:
Chen Z
中科院分区:
文献类型:
--
作者:
Li G;Wang X;Seo MH;Li M;Ma L;Yuan Y;Wu T;Yu A;Wang S;Lu J;Chen Z
Lithium–sulfur battery possesses high energy density but suffers from severe capacity fading due to the dissolution of lithium polysulfides. Novel design and mechanisms to encapsulate lithium polysulfides are greatly desired by high-performance lithium–sulfur batteries towards practical applications. Herein, we report a strategy of utilizing anthraquinone, a natural abundant organic molecule, to suppress dissolution and diffusion of polysulfides species through redox reactions during cycling. The keto groups of anthraquinone play a critical role in forming strong Lewis acid-based chemical bonding. This mechanism leads to a long cycling stability of sulfur-based electrodes. With a high sulfur content of ~73%, a low capacity decay of 0.019% per cycle for 300 cycles and retention of 81.7% over 500 cycles at 0.5 C rate can be achieved. This finding and understanding paves an alternative avenue for the future design of sulfur–based cathodes toward the practical application of lithium–sulfur batteries. Novel cathode design holds the key to enabling high performance lithium-sulfur batteries. Here the authors utilize anthraquinone to chemically stabilize polysulfides, revealing that the keto groups of anthraquinone play a critical role in forming strong Lewis acid-based chemical bonding.
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影响因子:
4.6
作者:
Babu G;Ababtain K;Ng KY;Arava LM
通讯作者:
Arava LM
影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
影响因子:
5.7
作者:
Cuisinier, Marine;Cabelguen, Pierre-Etienne;Nazar, Linda F.
通讯作者:
Nazar, Linda F.
影响因子:
3.7
作者:
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通讯作者:
Guo, Zhanhu
影响因子:
2.1
作者:
LATEF, A;BERNEDE, JC;BENHIDA, S
通讯作者:
BENHIDA, S