Journal ArticleDOI
General Synthesis of Transition‐Metal‐Based Carbon‐Group Intermetallic Catalysts for Efficient Electrocatalytic Hydrogen Evolution in Wide pH Range
Zonghua Pu,Tingting Liu,Haixia Zhang,Zhangsen Chen,Dong-Sheng Li,Ning Chen,Weifeng Chen,Zhangxin Chen,Shuhui Sun +8 more
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TLDR
In this paper , a series of intermetallic silicides (PtSi, RhSi, Ru2Si3, IrSi), germanide (Ru2Ge3), and stannides (Ru3Sn7, IrSn2, PdSn3, pdSn2) are rationally designed and constructed through a facile molten-salt-assisted route.Abstract:
Alloying is a well‐accepted strategy for modulating the electronic structures of catalyst materials. Compared to disordered solid‐solution alloys, intermetallic compounds feature ordered atomic arrangements and provide a unique platform with a rich and diverse resource to study the relationships among chemical composition, atomic structure, electronic structure, and properties. Unfortunately, it is still challenging to synthesize the nanostructures of intermetallic compounds for catalysis research. In this study, a series of intermetallic silicides (PtSi, RhSi, Ru2Si3, IrSi), germanide (Ru2Ge3), and stannides (Ru3Sn7, IrSn2, PdSn3, PdSn2) are rationally designed and constructed through a facile molten‐salt‐assisted route. As an example, the PtSi not only shows highly desirable electrocatalytic properties for the hydrogen evolution reaction (HER) with low overpotentials of 22, 38, and 66 mV at a current density of 10 mA cm‐2 in acidic, alkaline, and neutral media, respectively, but exhibits superior durability, as well as >97% faradic efficiency. The theoretical calculations suggest that the introduction of Si to Pt could weaken the binding energy between Pt and H atoms, which further facilitates the hydrogen generation during the HER process. Further, the findings inspired the authors to develop other kinds of metal‐based carbon‐group intermetallic phases with excellent activity in the HER and beyond.read more
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Journal ArticleDOI
Highly Active Si Sites Enabled by Negative Valent Ru for Electrocatalytic Hydrogen Evolution in LaRuSi.
Shijie Shen,Zhiyun Hu,Huanhuan Zhang,Kai Song,Zongpeng Wang,Zhiping Lin,Qinghua Zhang,Lin Gu,Wenwu Zhong +8 more
TL;DR: In this paper , the authors reveal that the genuine active sites for the hydrogen evolution reaction (HER) in LaRuSi are Si sites, not the usually assumed Ru sites, which sheds light on the recognition of real active sites and the exploration of innovative silicide HER electrocatalysts.
Journal ArticleDOI
High activity and stability in Ni2P/(Co,Ni)OOH heterointerface with a multiple-hierarchy structure for alkaline hydrogen evolution reaction
Journal ArticleDOI
Unlocking Interfacial Electron Transfer of Ruthenium Phosphides by Homologous Core–Shell Design toward Efficient Hydrogen Evolution and Oxidation
TL;DR: In this article , a homologous RuP@RuP2 core-shell architecture constructed by a phosphatization-controlled phasetransformation strategy enables strong electron coupling for optimal intermediate adsorption by virtue of the emergent interfacial functionality.
Journal ArticleDOI
Highly Active Si Sites Enabled by Negative Valent Ru for Electrocatalytic Hydrogen Evolution in LaRuSi
Shijie Shen,Zhiyun Hu,Huanhuan Zhang,Kai Song,Zongpeng Wang,Zhiping Lin,Qinghua Zhang,Lin Gu,Wenwu Zhong +8 more
TL;DR: In this article , the authors reveal that the genuine active sites for the hydrogen evolution reaction (HER) in LaRuSi are Si sites, not the usually assumed Ru sites, which sheds light on the recognition of real active sites and the exploration of innovative silicide HER electrocatalysts.
Journal ArticleDOI
Robust Pt/TiO2/Ni(OH)2 Nanosheet Arrays Enable Outstanding Performance for High Current Density Alkaline Water Electrolysis
Ai Qiong Kong,Mao Peng,Menghui Liu,Ye Lv,Houjun Zhang,Yusheng Gao,Jing Liu,Yan Fu,Wei Liu,Jinli Zhang +9 more
TL;DR: In this paper , the authors developed a novel and simple strategy to construct Ptdecorated TiO 2 /β-Ni(OH) 2 nanosheet arrays that steadily deliver industrial current densities at ultralow overpotentials in alkaline electrolyte.
References
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Journal ArticleDOI
Combining theory and experiment in electrocatalysis: Insights into materials design
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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Sustainable Hydrogen Production
TL;DR: Identifying and building a sustainable energy system are perhaps two of the most critical issues that today's society must address.
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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
Platinum-Like Behavior of Tungsten Carbide in Surface Catalysis
R. B. Levy,Michel Boudart +1 more
TL;DR: Tungsten carbide catalyzes the formation of water from hydrogen and oxygen at room temperature, the reduction of tungsten trioxide by hydrogen in the presence of water, and the isomerization of 2,2-dimethylpropane to 2-methylbutane.
Journal ArticleDOI
A highly active and stable IrOx/SrIrO3 catalyst for the oxygen evolution reaction
Linsey C. Seitz,Colin F. Dickens,Colin F. Dickens,Kazunori Nishio,Kazunori Nishio,Yasuyuki Hikita,Joseph Montoya,Andrew D. Doyle,Charlotte Kirk,Aleksandra Vojvodic,Harold Y. Hwang,Harold Y. Hwang,Jens K. Nørskov,Jens K. Nørskov,Thomas F. Jaramillo,Thomas F. Jaramillo +15 more
TL;DR: The IrOx/SrIrO3 catalyst outperforms known IrOx and ruthenium oxide (RuOx) systems, the only other OER catalysts that have reasonable activity in acidic electrolyte.