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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Eutectoid WxC embedded WS2 nanosheets as a hybrid composite anode for lithium-ion batteries
Sajjad Hussain,Muhammad Faizan,Dhanasekaran Vikraman,Iqra Rabani,Basit Ali,Hyun-Seok Kim,Jongwan Jung,Kyung-Wan Nam +7 more
TL;DR: In this paper, a novel eutectoid structure, WxC-embedded WS2 nanosheets hybrids composite, was developed by hydrothermal reaction followed by a carbonization process.
Journal ArticleDOI
Wettability transition of Ni3B4-doped MoS2 for hydrogen evolution reaction by magnetron sputtering
TL;DR: In this paper, the Ni3B4-doped MoS2 nanosheet was directly deposited on Ni foam through co-sputtering, and the results showed that the mixture of Ni 3B4 degrees brought the wettability transition, which promoted the contact between electrode and electrolyte.
Journal ArticleDOI
Hierarchical Amorphous Carbon-Coated Co/Co9S8 Nanoparticles on MoS2 toward Synergetic Electrocatalytic Water Splitting
Qianqian Lin,Junmei Liang,Jiapeng Liu,Qicheng Zhang,Wenchao Peng,Yang Li,Fengbao Zhang,Xiaobin Fan +7 more
TL;DR: In this paper, the development of electrocatalysts with excellent performance, affordable price, and abundant reserves is an important way to realize the overall water splitting, and a unique electrocatalyst design was proposed.
Journal ArticleDOI
One-Pot Hydrothermal Synthesis of Ni3S2/MoS2/FeOOH Hierarchical Microspheres on Ni Foam as a High-Efficiency and Durable Dual-Function Electrocatalyst for Overall Water Splitting
Journal ArticleDOI
A high-density nickel-cobalt alloy embedded in nitrogen-doped carbon nanosheets for the hydrogen evolution reaction.
TL;DR: In this paper , high-density nickel-cobalt alloy nanoparticles embedded in the bent nitrogen-doped carbon nanosheets are prepared as a high-performance catalyst.
References
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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.
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2D metal carbides and nitrides (MXenes) for energy storage
TL;DR: More than twenty 2D carbides, nitrides and carbonitrides of transition metals (MXenes) have been synthesized and studied, and dozens more predicted to exist.
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
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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.