Engineering water dissociation sites in MoS2 nanosheets for accelerated electrocatalytic hydrogen production

Zhang J, Wang T, Liu P, Liu S, Dong R, Zhuang X, Chen M, Feng X (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Energy and Environmental Science Royal Society of Chemistry

Book Volume: 9

Pages Range: 2789-2793

Journal Issue: 9

DOI: 10.1039/c6ee01786j

Abstract

Earth-abundant MoS2 is widely reported as a promising HER electrocatalyst in acidic solutions, but it exhibits extremely poor HER activities in alkaline media due to the slow water dissociation process. Here we present a combined theoretical and experimental approach to improve the sluggish HER kinetics of MoS2 electrocatalysts through engineering the water dissociation sites by doping Ni atoms into MoS2 nanosheets. The Ni sites thus introduced can effectively reduce the kinetic energy barrier of the initial water-dissociation step and facilitate the desorption of the -OH that are formed. As a result, the developed Ni-doped MoS2 nanosheets (Ni-MoS2) show an extremely low HER overpotential of ∼98 mV at 10 mA cm-2 in 1 M KOH aqueous solution, which is superior to those (>220 mV at 10 mA cm-2) of reported MoS2 electrocatalysts.

Involved external institutions

Technische Universität Dresden DE Germany (DE) Université Claude Bernard Lyon 1 (UCB) FR France (FR) Tohoku University JP Japan (JP)

How to cite

APA:

Zhang, J., Wang, T., Liu, P., Liu, S., Dong, R., Zhuang, X.,... Feng, X. (2016). Engineering water dissociation sites in MoS2 nanosheets for accelerated electrocatalytic hydrogen production. Energy and Environmental Science, 9(9), 2789-2793. https://doi.org/10.1039/c6ee01786j

MLA:

Zhang, Jian, et al. "Engineering water dissociation sites in MoS2 nanosheets for accelerated electrocatalytic hydrogen production." Energy and Environmental Science 9.9 (2016): 2789-2793.

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