Journal ArticleDOI
Tuning the Activity of Carbon for Electrocatalytic Hydrogen Evolution via an Iridium-Cobalt Alloy Core Encapsulated in Nitrogen-Doped Carbon Cages.
Peng Jiang,Jitang Chen,Jitang Chen,Changlai Wang,Kang Yang,Shipeng Gong,Shuai Liu,Zhiyu Lin,Mengsi Li,Guoliang Xia,Yang Yang,Jianwei Su,Qianwang Chen,Qianwang Chen +13 more
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TLDR
Surface structural and computational studies reveal that the superior behavior originates from the decreased ΔGH* for HER induced by the electrons transferred from the alloy core to the graphene layers, which is beneficial for enhancing CH binding.Abstract:
Graphene, a 2D material consisting of a single layer of sp2 -hybridized carbon, exhibits inert activity as an electrocatalyst, while the incorporation of heteroatoms (such as N) into the framework can tune its electronic properties. Because of the different electronegativity between N and C atoms, electrons will transfer from C to N in N-doped graphene nanosheets, changing inert C atoms adjacent to the N-dopants into active sites. Notwithstanding the achieved progress, its intrinsic activity in acidic media is still far from Pt/C. Here, a facile annealing strategy is adopted for Ir-doped metal-organic frameworks to synthesize IrCo nanoalloys encapsulated in N-doped graphene layers. The highly active electrocatalyst, with remarkably reduced Ir loading (1.56 wt%), achieves an ultralow Tafel slope of 23 mV dec-1 and an overpotential of only 24 mV at a current density of 10 mA cm-2 in 0.5 m sulfuric acid solution. Such superior performance is even superior to the noble-metal catalyst Pt. Surface structural and computational studies reveal that the superior behavior originates from the decreased ΔGH* for HER induced by the electrons transferred from the alloy core to the graphene layers, which is beneficial for enhancing CH binding.read more
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Journal ArticleDOI
Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles.
TL;DR: The fundamentals of HER are summarized and the recent state-of-the-art advances in the low-cost and high-performance catalysts based on noble and non-noble metals, as well as metal-free HER electrocatalysts are reviewed.
Journal ArticleDOI
State of the Art and Prospects in Metal-Organic Framework (MOF)-Based and MOF-Derived Nanocatalysis.
Qi Wang,Didier Astruc +1 more
TL;DR: This review first briefly summarizes this background of MOF nanoparticle catalysis and then comprehensively reviews the fast-growing literature reported during the last years.
Journal ArticleDOI
MOF-derived electrocatalysts for oxygen reduction, oxygen evolution and hydrogen evolution reactions
TL;DR: A wide range of applications based on these materials for ORR, OER, HER and multifunctional electrocatalysis are discussed, with an emphasis on the required features of MOF-derived carbon-based materials for the Electrocatalysis of corresponding reactions.
Journal ArticleDOI
Support and Interface Effects in Water-Splitting Electrocatalysts
TL;DR: Recent research progress on the support and interface effects in HER, OER, and overall water-splitting electrocatalysts is highlighted and the correlation between the electronic interaction of the constituent components and the electrocatalyst performance is profoundly discussed.
Journal ArticleDOI
Ruthenium atomically dispersed in carbon outperforms platinum toward hydrogen evolution in alkaline media.
Bingzhang Lu,Guo Lin,Guo Lin,Feng Wu,Yi Peng,Jia En Lu,Tyler J. Smart,Nan Wang,Y. Zou Finfrock,Y. Zou Finfrock,David Morris,Peng Zhang,Ning Li,Peng Gao,Yuan Ping,Shaowei Chen,Shaowei Chen +16 more
TL;DR: Nitrogen- and ruthenium-codoped carbon nanowires are prepared as effective hydrogen evolution catalysts in which r Ruthenium atoms in a carbon matrix drive electrocatalysis of hydrogen evolution.
References
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Journal ArticleDOI
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Zhi Wei Seh,Zhi Wei Seh,Zhi Wei Seh,Jakob Kibsgaard,Jakob Kibsgaard,Jakob Kibsgaard,Colin F. Dickens,Colin F. Dickens,Ib Chorkendorff,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo +12 more
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Journal ArticleDOI
Noble metal-free hydrogen evolution catalysts for water splitting
Xiaoxin Zou,Yu Zhang +1 more
TL;DR: This review highlights the recent research efforts toward the synthesis of noble metal-free electrocatalysts, especially at the nanoscale, and their catalytic properties for the hydrogen evolution reaction (HER), and summarizes some important examples showing that non-Pt HER electrocatsalysts could serve as efficient cocatalysts for promoting direct solar-to-hydrogen conversion in both photochemical and photoelectrochemical water splitting systems, when combined with suitable semiconductor photocatalyst.
Journal ArticleDOI
Computational high-throughput screening of electrocatalytic materials for hydrogen evolution
TL;DR: A density functional theory-based, high-throughput screening scheme that successfully uses these strategies to identify a new electrocatalyst for the hydrogen evolution reaction (HER), which is found to have a predicted activity comparable to, or even better than, pure Pt, the archetypical HER catalyst.
Journal ArticleDOI
Towards the computational design of solid catalysts
TL;DR: The first steps towards using computational methods to design new catalysts are reviewed and how, in the future, such methods may be used to engineer the electronic structure of the active surface by changing its composition and structure are discussed.
Journal ArticleDOI
Reaction-Driven Restructuring of Rh-Pd and Pt-Pd Core-Shell Nanoparticles
Feng Tao,Feng Tao,Michael E. Grass,Michael E. Grass,Yawen Zhang,Yawen Zhang,Yawen Zhang,Derek R. Butcher,Derek R. Butcher,James Russell Renzas,James Russell Renzas,Zhi Liu,Jen Y. Chung,Bongjin Simon Mun,Miquel Salmeron,Miquel Salmeron,Gabor A. Somorjai,Gabor A. Somorjai +17 more
TL;DR: The different behaviors in restructuring and chemical response of Rh.5.5Pd0.5 and Pt.5 nanoparticle catalysts under the same reaction conditions illustrates the flexibility and tunability of the structure of bimetallic nanoparticles catalysts during catalytic reactions.