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Electroless Formation of a Fluorinated Li/Na Hybrid Interphase for Robust Lithium Anodes.
Wang, Yingli; Liu, Fangming; Fan, Guilan; Qiu, Xiaoguang; Liu, Jiuding; Yan, Zhenhua; Zhang, Kai; Cheng, Fangyi; Chen, Jun.
Afiliación
  • Wang Y; College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Liu F; College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Fan G; College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Qiu X; College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Liu J; College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Yan Z; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Research Center of High-Efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Zhang K; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Research Center of High-Efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Cheng F; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Research Center of High-Efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
  • Chen J; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Research Center of High-Efficiency Energy Storage (Ministry of Education), College of Chemistry, Nankai University, Tianjin 300071, P. R. China.
J Am Chem Soc ; 143(7): 2829-2837, 2021 Feb 24.
Article en En | MEDLINE | ID: mdl-33587623
Engineering a stable solid electrolyte interphase (SEI) is one of the critical maneuvers in improving the performance of a lithium anode for high-energy-density rechargeable lithium batteries. Herein, we build a fluorinated lithium/sodium hybrid interphase via a facile electroless electrolyte-soaking approach to stabilize the repeated plating/stripping of lithium metal. Jointed experimental and computational characterizations reveal that the fluorinated hybrid SEI mainly consisting of NaF, LiF, LixPOyFz, and organic components features a mosaic polycrystalline structure with enriched grain boundaries and superior interfacial properties toward Li. This LiF/NaF hybrid SEI exhibits improved ionic conductivity and mechanical strength in comparison to the SEI without NaF. Remarkably, the fluorinated hybrid SEI enables an extended dendrite-free cycling of metallic Li over 1300 h at a high areal capacity of 10 mAh cm-2 in symmetrical cells. Furthermore, full cells based on the LiFePO4 cathode and hybrid SEI-protected Li anode sustain long-term stability and good capacity retention (96.70% after 200 cycles) at 0.5 C. This work could provide a new avenue for designing robust multifunctional SEI to upgrade the metallic lithium anode.

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article

Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article