title: Subnanometer Molybdenum Sulfide on Carbon Nanotubes as a Highly Active and Stable Electrocatalyst for Hydrogen Evolution Reaction.
abstract: Electrochemically splitting water for hydrogen evolution reaction (HER) has been viewed as a promising approach to produce renewable and clean hydrogen energy. However, searching for cheap and efficient HER electrocatalysts to replace the currently used Pt-based catalysts remains an urgent task. Herein, we develop a one-step carbon nanotube (CNT) assisted synthesis strategy with CNTs' strong adsorbability to mediate the growth of subnanometer-sized MoS(x) on CNTs. The subnanometer MoS(x)-CNT hybrids achieve a low overpotential of 106 mV at 10 mA cm(-2), a small Tafel slope of 37 mV per decade, and an unprecedentedly high turnover frequency value of 18.84 s(-1) at η = 200 mV among all reported non-Pt catalysts in acidic conditions. The superior performance of the hybrid catalysts benefits from the presence of a higher number of active sites and the abundant exposure of unsaturated S atoms rooted in the subnanometer structure, demonstrating a new class of subnanometer-scale catalysts.
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Juanxia
authors.initials: J
authors.lastname: Shen
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Huagui
authors.initials: H
authors.lastname: Nie
authors.affiliation: ARC Centre of Excellence for Functional Nanomaterials, Institute for Frontier Materials, Deakin University , Waurn Ponds, Victoria 3216, Australia.
authors.forename: Qiran
authors.initials: Q
authors.lastname: Cai
authors.affiliation: ARC Centre of Excellence for Functional Nanomaterials, Institute for Frontier Materials, Deakin University , Waurn Ponds, Victoria 3216, Australia.
authors.forename: Luhua
authors.initials: L
authors.lastname: Li
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Mengzhan
authors.initials: M
authors.lastname: Ge
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Cancan
authors.initials: C
authors.lastname: Gu
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Xi'an
authors.initials: X
authors.lastname: Chen
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Keqin
authors.initials: K
authors.lastname: Yang
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Lijie
authors.initials: L
authors.lastname: Zhang
authors.affiliation: ARC Centre of Excellence for Functional Nanomaterials, Institute for Frontier Materials, Deakin University , Waurn Ponds, Victoria 3216, Australia.
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Nanomaterials & Chemistry Key Laboratory, Wenzhou University , Wenzhou 325027, China.
authors.forename: Shaoming
authors.initials: S
authors.lastname: Huang
keywords: carbon nanotubes; electrocatalysts; hydrogen evolution reaction; molybdenum sulfide; subnanometer