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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201805188
|2 doi
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|a pubmed24n0966.xml
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|a (DE-627)NLM29002935X
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|a (NLM)30368944
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Zang, Xining
|e verfasserin
|4 aut
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| 245 |
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|a Self-Assembly of Large-Area 2D Polycrystalline Transition Metal Carbides for Hydrogen Electrocatalysis
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 12.12.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Low-dimensional (0/1/2 dimension) transition metal carbides (TMCs) possess intriguing electrical, mechanical, and electrochemical properties, and they serve as convenient supports for transition metal catalysts. Large-area single-crystalline 2D TMC sheets are generally prepared by exfoliating MXene sheets from MAX phases. Here, a versatile bottom-up method is reported for preparing ultrathin TMC sheets (≈10 nm in thickness and >100 μm in lateral size) with metal nanoparticle decoration. A gelatin hydrogel is employed as a scaffold to coordinate metal ions (Mo5+ , W6+ , Co2+ ), resulting in ultrathin-film morphologies of diverse TMC sheets. Carbonization of the scaffold at 600 °C presents a facile route to the corresponding MoCx , WCx , CoCx , and to metal-rich hybrids (Mo2- x Wx C and W/Mo2 C-Co). Among these materials, the Mo2 C-Co hybrid provides excellent hydrogen evolution reaction (HER) efficiency (Tafel slope of 39 mV dec-1 and 48 mVj = 10 mA cm-2 in overpotential in 0.5 m H2 SO4 ). Such performance makes Mo2 C-Co a viable noble-metal-free catalyst for the HER, and is competitive with the standard platinum on carbon support. This template-assisted, self-assembling, scalable, and low-cost manufacturing process presents a new tactic to construct low-dimensional TMCs with applications in various clean-energy-related fields
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|a Journal Article
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|a 2D transition metal carbide (2D TMC)
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|a hydrogen electrocatalysis
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|a metallohydrogel
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|a self-assembly
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|a Chen, Wenshu
|e verfasserin
|4 aut
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1 |
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|a Zou, Xiaolong
|e verfasserin
|4 aut
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|a Hohman, J Nathan
|e verfasserin
|4 aut
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1 |
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|a Yang, Lujie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Buxuan
|e verfasserin
|4 aut
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|a Wei, Minsong
|e verfasserin
|4 aut
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|a Zhu, Chenhui
|e verfasserin
|4 aut
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|a Liang, Jiaming
|e verfasserin
|4 aut
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|a Sanghadasa, Mohan
|e verfasserin
|4 aut
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|a Gu, Jiajun
|e verfasserin
|4 aut
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| 700 |
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|a Lin, Liwei
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 50 vom: 30. Dez., Seite e1805188
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:30
|g year:2018
|g number:50
|g day:30
|g month:12
|g pages:e1805188
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|u http://dx.doi.org/10.1002/adma.201805188
|3 Volltext
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