MXenes are a large family, more than 20 members, of two-dimensional (2D) transition metal carbides and nitrides with composition of Mn+1XnTz; where M is an early transition metal (e.g. Ti, V, Nb, Mo, etc.), X is carbon and/or nitrogen, n can be 1, 2, or 3, and Tz stands for surface terminations (O, OH and F). They exhibit unique properties, for example they are electrically conductive and hydrophilic, which is a rare combination in 2D materials. MXenes can be intercalated with a wide range of molecules and ions. Since their discovery in 2011, MXenes were found to be very promising materials for many applications (e.g., electrical energy storage and harvesting, water purification, conductive support, etc.). Among these applications, using them as electrode materials for electrochemical energy storage attracted most of the attention for their superior capability to handle high cycling rates with high energy for both ion-batteries and supercapacitors. Herein, we will shed a light on the recent advances in using MXenes as electrode materials for supercapacitors. We will also present the recent findings using neutron scattering and other structural characterization techniques in addition to scanning probe techniques combined with computational study to reveal fundamental details on changes in MXenes upon ions intercalation and mechanism of electrochemical energy storage for MXenes in various electrolytes.

Analysis of MXenes in electrochemical energy storage applications

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.