Journal ArticleDOI
Hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid with high electrocatalytic hydrogen evolution activity
TLDR
In this article, a simple strategy to synthesize the hierarchical MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing was reported.Abstract:
Developing highly efficient noble-metal-free electrocatalysts for hydrogen evolution reaction (HER) has attracted increasing attentions. Here, we report a simple strategy to synthesize the hierarchical “nanoroll” like MoS2/Ti3C2Tx hybrid by combining liquid nitrogen-freezing and subsequent annealing. The quick freezing of the Ti3C2Tx nanosheets and ammonium tetrathiomolybdate mixture causes a sudden change in the strain of Ti3C2Tx, which leads to an interesting “nanoroll” like hierarchical structure. After annealing at H2/Ar atmosphere, vertically aligned molybdenum sulfide (MoS2) crystallites are in situ formed in and on the nanoroll like Ti3C2Tx. Notably, this hierarchical MoS2/Ti3C2Tx hybrid exhibits excellent HER catalytic activity with a small onset overpotential of 30 mV, and a more than 25-fold increase in the exchange current density compared with MoS2 was observed.read more
Citations
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Journal ArticleDOI
Bio-templated formation of defect-abundant VS2 as a bifunctional material toward high-performance hydrogen evolution reactions and lithium−sulfur batteries
Tianqi Guo,Yingze Song,Zhongti Sun,Yuhan Wu,Yu Xia,Y. Li,Jianhui Sun,Kai Jiang,Shi Xue Dou,Jingyu Sun,Jingyu Sun +10 more
TL;DR: In this article, the authors report diatomite-template generic and scalable production of transition metal sulfides targeting emerging energy conversion and storage applications, and reveal that the enriched active sites/sulfur vacancies of thus-derived VS2 architectures would pose positive impacts on the catalytic performance such in electrocatalytic hydrogen evolution reactions.
Journal ArticleDOI
Increasing the active sites and intrinsic activity of transition metal chalcogenide electrocatalysts for enhanced water splitting
TL;DR: A comprehensive overview of the developed strategies in optimizing the electrocatalytic activities of transition metal chalcogenides (TMCs) is reviewed in this article, where a unique emphasis is placed on the promising strategies to regulate the electronic structures of TMCs by surface vacancy/defect, heteroatom doping, strain regulation, phase transition, and heterostructure engineering.
Journal ArticleDOI
Recent progress of MXenes and MXene-based nanomaterials for the electrocatalytic hydrogen evolution reaction
Zhaoming Kang,Muhammad Arif Khan,Yanmei Gong,Rida Javed,Yuan Xu,Daixin Ye,Hongbin Zhao,Jiujun Zhang +7 more
TL;DR: In this article, the recent advances in MXenes and their composites applied in HER electrocatalysis are overviewed in terms of their synthesis, functional mechanisms, and HER performance/optimization, and corresponding strategies to overcome these challenges are also proposed for future research and development of such a class of materials toward practical applications in devices for electrochemical energy storage and conversion.
Journal ArticleDOI
3D flower-like defected MoS2 magnetron-sputtered on candle soot for enhanced hydrogen evolution reaction
TL;DR: In this article, a 3D molybdenum disulfide (MoS2)-based catalysts for hydrogen evolution reaction (HER) based on naturally abundant elements is presented.
Journal ArticleDOI
Three-dimensional Core@Shell Co@CoMoO4 nanowire arrays as efficient alkaline hydrogen evolution electro-catalysts
TL;DR: In this article, a self-standing core@shell Co@CoMoO4 nanowire array (Co@Co MoO4 NA) electrode is developed by calcination of a cobalt carbonate hydroxide (CCH NA) precursor under H2/N2 atmosphere.
References
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Journal ArticleDOI
Identification of active edge sites for electrochemical H2 evolution from MoS2 nanocatalysts.
Thomas F. Jaramillo,Kristina Pilt Jørgensen,Jacob Lindner Bonde,Jane Hvolbæk Nielsen,Sebastian Horch,Ib Chorkendorff +5 more
TL;DR: The active site for hydrogen evolution, a reaction catalyzed by precious metals, on nanoparticulate molybdenum disulfide (MoS2) is determined by atomically resolving the surface of this catalyst before measuring electrochemical activity in solution.
Journal ArticleDOI
2D metal carbides and nitrides (MXenes) for energy storage
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Journal ArticleDOI
MoS2 Nanoparticles Grown on Graphene: An Advanced Catalyst for the Hydrogen Evolution Reaction
TL;DR: In this article, a selective solvothermal synthesis of MoS2 nanoparticles on reduced graphene oxide (RGO) sheets suspended in solution was developed, which exhibited superior electrocatalytic activity in the hydrogen evolution reaction (HER).
Journal ArticleDOI
Conductive two-dimensional titanium carbide ‘clay’ with high volumetric capacitance
TL;DR: This capacitance report reports a method of producing two-dimensional titanium carbide ‘clay’ using a solution of lithium fluoride and hydrochloric acid that offers a much faster route to film production as well as the avoidance of handling hazardous concentrated hydrofluoric acid.
Journal ArticleDOI
Cation Intercalation and High Volumetric Capacitance of Two-Dimensional Titanium Carbide
Maria R. Lukatskaya,Olha Mashtalir,Chang E. Ren,Yohan Dall'Agnese,Patrick Rozier,Pierre-Louis Taberna,Michael Naguib,Patrice Simon,Patrice Simon,Michel W. Barsoum,Yury Gogotsi +10 more
TL;DR: This study demonstrates the spontaneous intercalation of cations from aqueous salt solutions between two-dimensional (2D) Ti3C2 MXene layers, and provides a basis for exploring a large family of 2D carbides and carbonitrides in electrochemical energy storage applications using single- and multivalent ions.