TY - JOUR
T1 - Two-Dimensional Molybdenum Carbide (MXene) as an Efficient Electrocatalyst for Hydrogen Evolution
AU - Seh, Zhi Wei
AU - Fredrickson, Kurt D.
AU - Anasori, Babak
AU - Kibsgaard, Jakob
AU - Strickler, Alaina L.
AU - Lukatskaya, Maria R.
AU - Gogotsi, Yury
AU - Jaramillo, Thomas F.
AU - Vojvodic, Aleksandra
PY - 2016
Y1 - 2016
N2 - The hydrogen evolutionreaction (HER) is an important energy conversion process that underpins many clean energy technologies including water splitting. Herein, we report for the first time the application of two-dimensional (2D) layered transition metal carbides, MXenes, as electrocatalysts for the HER. Our computational screening study of 2D layered M2XTx (M = metal;X = (C, N); and Tx = surface functional groups) predicts Mo2CTx to be an active catalyst candidate for the HER. We synthesized both Mo2CTx and Ti2CTx MXenes, and in agreement with our theoretical predictions, Mo2CTx was found to exhibit far higher HER activity than Ti2CTx. Theory suggests that the basal planes of Mo2CTx are catalytically active toward the HER, unlike in the case of widely studied MoS2, in which only the edge sites of the 2H phase are active. This work paves the way for the development of novel 2D layered materials that can be applied in a multitude of other clean energy reactions for a sustainable energy future.
AB - The hydrogen evolutionreaction (HER) is an important energy conversion process that underpins many clean energy technologies including water splitting. Herein, we report for the first time the application of two-dimensional (2D) layered transition metal carbides, MXenes, as electrocatalysts for the HER. Our computational screening study of 2D layered M2XTx (M = metal;X = (C, N); and Tx = surface functional groups) predicts Mo2CTx to be an active catalyst candidate for the HER. We synthesized both Mo2CTx and Ti2CTx MXenes, and in agreement with our theoretical predictions, Mo2CTx was found to exhibit far higher HER activity than Ti2CTx. Theory suggests that the basal planes of Mo2CTx are catalytically active toward the HER, unlike in the case of widely studied MoS2, in which only the edge sites of the 2H phase are active. This work paves the way for the development of novel 2D layered materials that can be applied in a multitude of other clean energy reactions for a sustainable energy future.
U2 - 10.1021/acsenergylett.6b00247
DO - 10.1021/acsenergylett.6b00247
M3 - Journal article
SN - 2380-8195
VL - 1
SP - 589
EP - 594
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 3
ER -
