:
A new kind of two-dimensional (2D) materials MXene (early transition metal carbides, nitrides and
carbonitrides) is obtained by selective etching the A element from the MAX phases. MXene exhibits both the metallic
conductivity and the hydrophilic nature due to its metal layer structure and hydroxyl or oxygen terminated surfaces. This
review provides an overview of the MXene used in the electrolytes and electrodes for the fuel cells and water splitting.
MXene with functional groups termination could construct ion channels that significantly benefits to the ion conductivity
through the electrolyte. The metal supported by MXene interaction offers electronic, compositional, and geometric effects
that could enhance the catalytic activity and stability. MXene have already shown promising performance for fuel cells
and water electrolysis. Herein, the etching and intercalation methods of MXene in recent years are summarized. The
applications of MXene for fuel cells electrolyte, catalyst and water splitting catalyst are revealed to provide more brief
idea for MXene used as new energy materials.
