@article{34932,
  author = {Lujie Jia and Jian Wang and Shuaiyang Ren and Guoxi Ren and Xiang Jin and Licheng Kao and Xuefei Feng and Feipeng Yang and Qi Wang and Ludi Pan and Qingtian Li and Yi‐sheng Liu and Yang Wu and Gao Liu and Jun Feng and Shoushan Fan and Yifan Ye and Jinghua Guo and Yuegang Zhang},
  title = {Unraveling Shuttle Effect and Suppression Strategy in Lithium/Sulfur Cells by In Situ/Operando X‐ray Absorption Spectroscopic Characterization},
  abstract = {<p><span>The polysulfides shuttle effect represents a great challenge in achieving high capacity and long lifespan of lithium/sulfur (Li/S) cells. A comprehensive understanding of the shuttle-related sulfur speciation and diffusion process is vital for addressing this issue. Herein, we employed&nbsp;</span><em>in situ</em><span>/</span><em>operando</em><span>&nbsp;X-ray absorption spectroscopy (XAS) to trace the migration of polysulfides across the Li/S cells by precisely monitoring the sulfur chemical speciation at the cathodic electrolyte-separator and electrolyte-anode interfaces, respectively, in a real-time condition. After we adopted a shuttle-suppressing strategy by introducing an electrocatalytic layer of twinborn bismuth sulfide/bismuth oxide nanoclusters in a carbon matrix (BSOC), we found the Li/S cell showed greatly improved sulfur utilization and longer life span. The&nbsp;</span><em>operando</em><span>&nbsp;S K-edge XAS results revealed that the BSOC modification was bi-functional: trapping polysulfides and catalyzing conversion of sulfur species simultaneously. We elucidated that the polysulfide trapping-and-catalyzing effect of the BSOC electrocatalytic layer resulted in an effective lithium anode protection. Our results could offer potential stratagem for designing more advanced Li/S cells.</span></p>},
  year = {2021},
  journal = {ENERGY & ENVIRONMENTAL MATERIALS},
  volume = {4},
  pages = {222 - 228},
  month = {01/2021},
  issn = {2575-0356},
  doi = {10.1002/eem2.v4.210.1002/eem2.12152},
  language = {eng},
}