Electrochemical Properties of Ordered, Two-Dimensional, Double Transition Metals Carbides (MXenes)
Monday, October 12, 2015: 10:20
103-A (Phoenix Convention Center)
Two dimensional (2D) transition metal carbides (MXenes) are a new family of nanomaterials with a very high potential as electrode materials for batteries and electrochemical capacitors (ECs). These materials are labeled MXene because they are obtained by selectively etching of the A-layers from their 3D layered, parent compounds the Mn+1AXn, or MAX, phases, where M is an early transition metal, A is an A-group element, such as Al or Si, X is carbon and/or nitrogen and n is 1 to 3. The excellent performance of MXenes as electrode materials for ECs was recently reported in the case of Ti3
Here, we report on the synthesis and electrochemical properties of the ordered MXenes, Mo2
, wherein the Mo atoms are on the surface and the Ti atoms are between the Mo. The volumetric capacitance of freestanding electrodes fabricated by vacuum filtration of 2D Mo2
sheets, was about 400 F/cm3
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