Carbon-Coated MoSe 2 /MXene Hybrid Nanosheets for Superior Potassium Storage

Potassium-ion batteries (PIBs) are attracting intensive interest for large-scale applications due to the high natural abundance of potassium sources. However, the large radius of K+ makes it difficult for electrode materials to accommodate the repeated K+ insertion and extraction. Thus, developing high-performance electrode materials for PIBs remains a great challenge. Herein, we present the rational design and fabrication of hierarchical carbon-coated MoSe2/MXene hybrid nanosheets (MoSe2/MXene@C) as a superior anode material for PIBs. Specifically, the highly conductive MXene substrate can effectively relieve the aggregation of MoSe2 nanosheets and improve the electronic conductivity. Moreover, the carbon…

• NN
  National Natural Science Foundation of China

  Awards: 51621001, 21606088
• NK
  National Key Research and Development Program of China

  Award: 2016YFA0202604