Enhanced catalytic activity in strained chemically exfoliated WS 2 nanosheets for hydrogen evolution
Damien Voiry,Hisato Yamaguchi,Junwen Li,Rafael Silva,Diego C. B. Alves,Takeshi Fujita,Mingwei Chen,Tewodros Asefa,Vivek B. Shenoy,Goki Eda,Manish Chhowalla +10 more
Reads0
Chats0
TLDR
Analyses indicate that the enhanced electrocatalytic activity of WS₂ is associated with the high concentration of the strained metallic 1T (octahedral) phase in the as-exfoliated nanosheets.Abstract:
Efficient evolution of hydrogen via electrocatalysis at low overpotentials is promising for clean energy production. Monolayered nanosheets of chemically exfoliated WS2 are shown to be efficient catalysts for hydrogen evolution at very low overpotentials. The enhanced catalytic performance is associated with the high concentration of the strained metallic octahedral phase in the exfoliated nanosheets.read more
Citations
More filters
Journal ArticleDOI
Ferroelasticity and domain physics in two-dimensional transition metal dichalcogenide monolayers
Wenbin Li,Ju Li +1 more
TL;DR: It is predicted that mechanical strain can switch the relative thermodynamic stability between the orientation variants of the 1T′ phase, and it is found that such strain-induced variant switching only requires a few percent elastic strain, which is eminently achievable experimentally with transition metal dichalcogenide monolayers.
Journal ArticleDOI
Interface Engineered WxC@WS2 Nanostructure for Enhanced Hydrogen Evolution Catalysis
Fengmei Wang,Fengmei Wang,Peng He,Yuanchang Li,Tofik Ahmed Shifa,Tofik Ahmed Shifa,Ya Deng,Ya Deng,Kaili Liu,Kaili Liu,Qisheng Wang,Feng Wang,Feng Wang,Yao Wen,Yao Wen,Zhenxing Wang,Xueying Zhan,Lianfeng Sun,Jun He +18 more
TL;DR: In this article, a Ravenala leaf-like WxC@WS2 heterostructure is grown via carbonizing WS2 nanotubes, whose outer walls being partially unzipped along with the Wx C “leaf-valves” attached to the inner tubes during the carbonization process.
Journal ArticleDOI
Exfoliated 2D Transition Metal Disulfides for Enhanced Electrocatalysis of Oxygen Evolution Reaction in Acidic Medium
Jingjie Wu,Mingjie Liu,Kuntal Chatterjee,Kuntal Chatterjee,Ken Hackenberg,Jianfeng Shen,Jianfeng Shen,Xiaolong Zou,Yong Yan,Jing Gu,Yingchao Yang,Jun Lou,Pulickel M. Ajayan +12 more
TL;DR: In this article, the performance of transition-metal dichalcogenides (MoS2 and TaS2) for oxygen evolution reaction (OER) in acid medium has been investigated.
Journal ArticleDOI
Colloidal synthesis of VSe2 single-layer nanosheets as novel electrocatalysts for the hydrogen evolution reaction
TL;DR: A one-pot colloidal route to synthesize VSe2, a new type of metallic single-layer nanosheet that possesses extraordinary electrocatalytic hydrogen evolution reaction (HER) performance with a low onset overpotential, a small Tafel slope of 88 mV per decade, and an exceptional overpot potential of 206 mV at a current density of 10 mA cm(-2).
Journal ArticleDOI
Intercalation and exfoliation chemistries of transition metal dichalcogenides
TL;DR: In this paper, the authors provide a comprehensive summary about the intercalation and exfoliation processes of layered materials as well as their properties and applications, and the applications of 2D TMDs fabricated from exfoliations are also introduced.
References
More filters
Journal ArticleDOI
Generalized Gradient Approximation Made Simple
TL;DR: A simple derivation of a simple GGA is presented, in which all parameters (other than those in LSD) are fundamental constants, and only general features of the detailed construction underlying the Perdew-Wang 1991 (PW91) GGA are invoked.
Journal ArticleDOI
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: An efficient scheme for calculating the Kohn-Sham ground state of metallic systems using pseudopotentials and a plane-wave basis set is presented and the application of Pulay's DIIS method to the iterative diagonalization of large matrices will be discussed.
Journal ArticleDOI
Projector augmented-wave method
TL;DR: An approach for electronic structure calculations is described that generalizes both the pseudopotential method and the linear augmented-plane-wave (LAPW) method in a natural way and can be used to treat first-row and transition-metal elements with affordable effort and provides access to the full wave function.
Journal ArticleDOI
Atomically thin MoS2: a new direct-gap semiconductor
TL;DR: The electronic properties of ultrathin crystals of molybdenum disulfide consisting of N=1,2,…,6 S-Mo-S monolayers have been investigated by optical spectroscopy and the effect of quantum confinement on the material's electronic structure is traced.
Journal ArticleDOI
Single-layer MoS2 transistors
TL;DR: Because monolayer MoS(2) has a direct bandgap, it can be used to construct interband tunnel FETs, which offer lower power consumption than classical transistors, and could also complement graphene in applications that require thin transparent semiconductors, such as optoelectronics and energy harvesting.