In situ synthesis of core shell Al@MIL-53 anode for high-performance lithium-ion batteries

Authors：Peng, Ning^*; Xu, Guiren; Jiang, Jiqiong; Zhao, Anning; Liang, Libo

Source：Journal of Materials Science, 2022, 57(24): 11242-11252.

DOI：10.1007/s10853-022-07253-1

• MOF
• GRAPHENE
• STORAGE
• GROWTH

Metal-organic frameworks with high porosity, large surface area and adjustable pore sizes have received great attentions in the field of lithium-ion batteries; however, its low intrinsic electrical conductivity seriously restricts its practical application. In this work, the Al particles are directly used as a feed-stock to in situ synthesize Al@MIL-53 core-shell anode by using a facile hydrothermal method. Compared to the Al particles and the con-MIL-53 anode, the vitalized Al@MIL-53 anode presents a high capacity of 135 mAh g(-1) after 500 cycles at current density of 100 mA g(-1) and also an excellent capacity retention under a high current density of 500 mA g(-1). These results indicate that the uniformly distributed size of the MIL-53 on shell and the internal conductive network of the Al core can effectively improve structural stability, which is illuminating for the practical application in high-performance lithium-ion batteries. Although the capacity of the Al@MIL-53 composite is not the highest among the existing anode materials, its synthesis process is simpler and cost effective. @@@ [GRAPHICS] @@@ .

• Institution
  桂林理工大学