Journal ArticleDOI
Porous Multishelled Ni2P Hollow Microspheres as an Active Electrocatalyst for Hydrogen and Oxygen Evolution
Hongming Sun,Xiaobin Xu,Zhenhua Yan,Xiang Chen,Fangyi Cheng,Fangyi Cheng,Paul S. Weiss,Jun Chen +7 more
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TLDR
In this paper, porous multishelled Ni2P hollow microspheres assembled by nanoparticles were prepared through a simple and economical self-templating approach followed by phosphorization.Abstract:
Tailoring the morphology and microstructure of electrocatalysts is important in improving catalytic performance. Herein, porous multishelled Ni2P hollow microspheres assembled by nanoparticles were prepared through a simple and economical self-templating approach followed by phosphorization. Compared with nanoparticles and hierarchical solid-interior microspheres, the synthesized multishelled, hollow microstructures of Ni2P exhibit significantly higher electrocatalytic activity for the hydrogen evolution reaction in a 1 M KOH electrolyte. Additionally, a NiOOH layer is formed on the surface of Ni2P during anodic polarization, as revealed by electron microscopy, X-ray photoelectron spectroscopy, and in situ Raman analysis. The Ni2P/NiOOH derivative outperforms the benchmark RuO2 in catalyzing the oxygen evolution reaction. Furthermore, pairing the carbon fiber paper-supported multishelled Ni2P as both the anode and cathode results in superior overall alkaline water splitting performance, generating 10 and ...read more
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Journal ArticleDOI
Self-Supported Transition-Metal-Based Electrocatalysts for Hydrogen and Oxygen Evolution
TL;DR: Focusing on self-supported electrodes, the latest advances in their structural design, controllable synthesis, mechanistic understanding, and strategies for performance enhancement are presented.
Journal ArticleDOI
Morphology‐Controlled Metal Sulfides and Phosphides for Electrochemical Water Splitting
TL;DR: Synthetic methods for morphology-controlled metal sulfide- and phosphide-based nanocatalysts with enhanced surface area and intrinsically high catalytic activity are introduced to provide insights into these methodologies.
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.
Journal ArticleDOI
Metal–Organic Framework Hybrid-Assisted Formation of Co3O4/Co-Fe Oxide Double-Shelled Nanoboxes for Enhanced Oxygen Evolution
TL;DR: Owing to the structural and compositional benefits, the as-derived Co3 O4 /Co-Fe oxide double-shelled nanoboxes exhibit enhanced electrocatalytic performance for oxygen evolution reaction in alkaline solution.
References
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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
Nanostructured Nickel Phosphide as an Electrocatalyst for the Hydrogen Evolution Reaction
Eric J. Popczun,James R. McKone,Carlos G. Read,Adam J. Biacchi,Alex M. Wiltrout,Nathan S. Lewis,Raymond E. Schaak +6 more
TL;DR: The catalytically active Ni2P nanoparticles had among the highest HER activity of any non-noble metal electrocatalyst reported to date, producing H2(g) with nearly quantitative faradaic yield, while also affording stability in aqueous acidic media.
Journal ArticleDOI
Self-Supported Nanoporous Cobalt Phosphide Nanowire Arrays: An Efficient 3D Hydrogen-Evolving Cathode over the Wide Range of pH 0–14
TL;DR: The topotactic fabrication of self-supported nanoporous cobalt phosphide nanowire arrays on carbon cloth via low-temperature phosphidation of the corresponding Co(OH)F/CC precursor offers excellent catalytic performance and durability under neutral and basic conditions.
Journal ArticleDOI
Nanostructured hydrotreating catalysts for electrochemical hydrogen evolution
TL;DR: An overview of recent developments in the non-noble metal catalysts for electrochemical hydrogen evolution reaction (HER) is presented, with emphasis on the nanostructuring of industrially relevant hydrotreating catalysts as potential HER electrocatalysts.
Journal ArticleDOI
Homogeneously dispersed, multimetal oxygen-evolving catalysts
Bo Zhang,Bo Zhang,Xueli Zheng,Xueli Zheng,Oleksandr Voznyy,Riccardo Comin,Michal Bajdich,Michal Bajdich,Max García-Melchor,Max García-Melchor,Lili Han,Lili Han,Jixian Xu,Min Liu,Lirong Zheng,F. Pelayo García de Arquer,Cao-Thang Dinh,Fengjia Fan,Mingjian Yuan,Emre Yassitepe,Ning Chen,Tom Regier,Peng Fei Liu,Yu Hang Li,Phil De Luna,Alyf Janmohamed,Huolin L. Xin,Hua Gui Yang,Aleksandra Vojvodic,Aleksandra Vojvodic,Edward H. Sargent +30 more
TL;DR: A room-temperature synthesis to produce gelled oxyhydroxides materials with an atomically homogeneous metal distribution that exhibit the lowest overpotential reported at 10 milliamperes per square centimeter in alkaline electrolyte and shows no evidence of degradation after more than 500 hours of operation.
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