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
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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
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References
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Engineering the surface structure of MoS2 to preferentially expose active edge sites for electrocatalysis
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Enhancing Hydrogen Evolution Activity in Water Splitting by Tailoring Li+-Ni(OH)2-Pt Interfaces
Ram Subbaraman,Dusan Tripkovic,Dusan Strmcnik,Kee-Chul Chang,Masanobu Uchimura,Arvydas P. Paulikas,Vojislav R. Stamenkovic,Nenad M. Markovic +7 more
TL;DR: It is found that a controlled arrangement of nanometer-scale Ni(OH)2 clusters on platinum electrode surfaces manifests a factor of 8 activity increase in catalyzing the hydrogen evolution reaction relative to state-of-the-art metal and metal-oxide catalysts.
Journal ArticleDOI
Highly active oxide photocathode for photoelectrochemical water reduction
Adriana Paracchino,Vincent Laporte,Kevin Sivula,Michael Grätzel,Elijah Thimsen,Elijah Thimsen +5 more
TL;DR: A highly active photocathode for solar H(2) production is presented, consisting of electrodeposited cuprous oxide, which was protected against photocathodic decomposition in water by nanolayers of Al-doped zinc oxide and titanium oxide and activated for hydrogen evolution with electroDeposited Pt nanoparticles.
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Changing the Activity of Electrocatalysts for Oxygen Reduction by Tuning the Surface Electronic Structure
Vojislav R. Stamenkovic,Bongjinsimon Mun,Karl Johann Jakob Mayrhofer,Philip N. Ross,Nenad M. Markovic,Jan Rossmeisl,Jeffrey Greeley,Jens K. Nørskov +7 more
TL;DR: Pt alloys involving 3d metals are better catalysts than Pt because the electronic structure of the Pt atoms in the surface of these alloys has been modified slightly, and it is shown that electrocatalysts can be designed on the basis of fundamental insight.
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Growth of Large-Area and Highly Crystalline MoS2 Thin Layers on Insulating Substrates
Keng-Ku Liu,Wenjing Zhang,Yi-Hsien Lee,Yu-Chuan Lin,Mu Tung Chang,Ching Yuan Su,Chia-Seng Chang,Hai Li,Yumeng Shi,Hua Zhang,Chao-Sung Lai,Lain-Jong Li,Lain-Jong Li +12 more
TL;DR: It is reported that the high-temperature annealing of a thermally decomposed ammonium thiomolybdate layer in the presence of sulfur can produce large-area MoS(2) thin layers with superior electrical performance on insulating substrates.