The Role of Phosphate Group in Doped Cobalt Molybdate: Improved Electrocatalytic Hydrogen Evolution Performance
Siyu Zhao,Jasper Berry-Gair,Wenyao Li,Wenyao Li,Guoqiang Guan,Manni Yang,Jianwei Li,Feili Lai,Furio Corà,Katherine B. Holt,Dan J. L. Brett,Guanjie He,Guanjie He,Ivan P. Parkin +13 more
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TLDR
Combined computational and in situ spectroscopic techniques show P is present as a surface phosphate ion; that electron holes localize on the surface ions and both (P—O1−) and Co3+—OH− are prospective surface active sites for the HER.Abstract:
The hydrogen evolution reaction (HER) is a critical process in the electrolysis of water. Recently, much effort has been dedicated to developing low-cost, highly efficient and stable electrocatalysts. Transition metal phosphides are investigated intensively due to their high electronic conductivity and optimized absorption energy of intermediates in acid electrolytes. However, the low stability of metal phosphide materials in air and during electrocatalytic processes causes a decay of performance and hinders the discovery of specific active sites. The HER in alkaline media is more intricate, which requires further delicate design due to the Volmer steps. In this work, we develop phosphorus modified monoclinic β-CoMoO4 as a low-cost, efficient and stable HER electrocatalyst for the electrolysis of water in alkaline media. The optimized catalyst shows a small overpotential of 94 mV to reach a current density of 10 mA cm-2 for the HER with high stability in KOH electrolyte, and an overpotential of 197 mV to reach a current density of 100 mA cm-2. Combined computational and in-situ spectroscopic techniques show P is present as a surface phosphate ion; that electron holes localise on the surface ions and both (P-O1-) and Co3+-OH- are prospective surface active sites for the HER.read more
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Metal oxide-based materials as an emerging family of hydrogen evolution electrocatalysts
TL;DR: A comprehensive review of recent advances in metal oxide-based electrocatalysts for hydrogen evolution reaction (HER) can be found in this paper, with special emphasis on designed strategies for promoting performance and property-activity correlation.
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Nanostructured metal phosphides: from controllable synthesis to sustainable catalysis.
TL;DR: In this article, the authors provide a comprehensive update on the controllable synthetic strategies for metal phosphides (MPs) from various metal sources, and different passivation strategies for engineering the structural and electronic properties of MP nanostructures are scrutinized.
Journal ArticleDOI
Heterogeneous Bimetallic Mo‐NiP x /NiS y as a Highly Efficient Electrocatalyst for Robust Overall Water Splitting
Jin Wang,Mengke Zhang,Guanglong Yang,Wenwu Song,Weiting Zhong,Xunyue Wang,Minmin Wang,Tongming Sun,Yanfeng Tang +8 more
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Boosting the interface reaction activity and kinetics of cobalt molybdate by phosphating treatment for aqueous zinc-ion batteries with high energy density and long cycle life
TL;DR: In this article, a one-step phosphating treatment of cobalt molybdate (CoMoO4) nanosheets is proposed to improve the performance of rechargeable zinc-ion batteries.
Journal ArticleDOI
Charge Redistribution Caused by S,P Synergistically Active Ru Endows an Ultrahigh Hydrogen Evolution Activity of S-Doped RuP Embedded in N,P,S-Doped Carbon.
Xiaoyu Liu,Fan Liu,Jiayuan Yu,Jiayuan Yu,Guowei Xiong,Lili Zhao,Yuanhua Sang,Shouwei Zuo,Jing Zhang,Hong Liu,Hong Liu,Weijia Zhou +11 more
TL;DR: This work provides a rational method to regulate the bonding and charge distribution of Ru‐based electrocatalysts by reacting macromolecules with multielement of C/N/S/P with Ru.
References
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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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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
Molybdenum Boride and Carbide Catalyze Hydrogen Evolution in both Acidic and Basic Solutions
Heron Vrubel,Xile Hu +1 more
TL;DR: Molybdenum boride and carbide are excellent catalysts for electrochemical hydrogen evolution at both pH 0 and pH 14.
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Recent developments of molybdenum and tungsten sulfides as hydrogen evolution catalysts
Daniel Merki,Xile Hu +1 more
TL;DR: In this paper, the synthesis, structures and catalytic activities of nanoparticulate MoS2 and WS2, incomplete cubane-type [Mo3S4]4+ and amorphous MoSx films are summarized, compared, and discussed.
Journal ArticleDOI
Carbon Nanotubes Decorated with CoP Nanocrystals: A Highly Active Non‐Noble‐Metal Nanohybrid Electrocatalyst for Hydrogen Evolution
TL;DR: A nanohybrid that consists of carbon nanotubes decorated with CoP nanocrystals (CoP/CNT) was prepared by the low-temperature phosphidation of a Co3O4/C NT precursor and only requires overpotentials of 70 and 122 mV to attain current densities of 2 and 10 mA cm(-2), respectively.