About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
|
Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
Presentation Title |
Two-Dimensional Transition Metal Carbo-Chalcogenide for Electrocatalysis |
Author(s) |
Elham Loni, Ahmad Majed, Hari Hara Sudhan Thangavelu, Per Persson, Chaochao Dun, Jeffrey Urban, Shengjie Zhang, Matthew Montemore, Anika Tabassum, Karamullah Eisawi, Michael Naguib |
On-Site Speaker (Planned) |
Elham Loni |
Abstract Scope |
Two-dimensional (2D) transition metal carbo-chalcogenides (TMCCs) include an early transition metal carbide core and a chalcogen surface, therefore, they offer high electrical conductivity and electrocatalytic activity, making them useful in energy storage applications such as batteries, supercapacitors, and electrocatalysis. Synthesis of TMCCs was achieved using a rapid, scalable, and simple method that produced M2X2C (M: transition metal, X: chalcogen, C: carbon) with weak out-of-plane van der Waal forces between the atomic layers. Afterward, with the aid of room-temperature wet chemistry, we etched the sample and obtained multilayer TMCCs (m-TMCCs). We successfully delaminated the m-TMCCs into 2D sheets through different lithiation approaches such as electro- and mechano-chemical intercalation followed by liquid exfoliation using deionized water and/or N-methyl formamide. We measured the electrochemical performance of 2D TMCCs as electrocatalysts for water splitting. The results were promising especially in the case of 2D-Ta2Se2C for hydrogen evolution reaction (HER). |