期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 3, 页码 3554-3562出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b18006
关键词
antimony anode; fluoroethylene carbonate; solid electrolyte interphase; lithium-ion batteries; sodium-ion batteries
资金
- National Natural Science Foundation of China [21805066]
- Natural Science Foundation of Hebei Province [B2019201160]
- Top Young Talents Project of Hebei Education Department [BJ2019052]
- China Postdoctoral Science Foundation [2019T120191, 2018M640244]
- Chunhui Program of Ministry of Education of China
- Advanced Talents Incubation Program of the Hebei University [521000981138]
- 111 project [B12015]
Metallic antimony (Sb) is an attractive anode material for lithium-/sodiumion batteries (LIBs/SIBs) because of its high theoretical capacity (660 mA h g(-1)), but it suffers from poor cycling performance caused by the huge volume expansion and the unstable solid electrolyte interphase (SEI). Here, we report a high-performing microsized Sb anode for both LIBs and SIBs by coupling it with fluoroethylene carbonate (FEC) containing electrolytes. The optimum amount of FEC (10 vol %) renders a stable LiF/NaF-rich SEI on Sb electrodes that can suppress the continuous electrolyte decomposition and accommodate the volume variation. The microsized Sb electrode gradually evolves into a porous integrity assembled by nanoparticles in FEC-containing electrolytes during cycling, which is totally different from that in the FEC-free counterpart. As a result, the microsized Sb electrodes exhibit a reversible capacity of 540 mA h g(-1) with 85.3% capacity retention after 150 cycles at 1000 mA g(-1) for LIBs and 605 mA h g(-1) with 95.4% capacity retention after 150 cycles at 200 mA g(-1) for SIBs. More impressively, the prototype full Li-based (i.e., Sb/LiNi0.8Co0.1Mn0.1O2 cell) and Na-based (i.e., Sb/Na3V2(PO4)(2)O2F cell) batteries also achieve good cycling durability. This facile strategy of electrolyte formulation to boost the cycling performance of microsized Sb anodes will provide a new avenue for developing stable alloying-type materials for both LIBs and SIBs.
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