Journal ArticleDOI
One‐Pot Synthesis of Pt–Co Alloy Nanowire Assemblies with Tunable Composition and Enhanced Electrocatalytic Properties
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TLDR
The electrochemical results demonstrate that the 3D Pt3Co NWA is indeed a promising electrocatalyst with enhanced catalytic activity and improved durability for practical electrocatalytic applications.Abstract:
Three-dimensional (3D) Pt-based alloy nanostructures composed of one-dimensional (1D) nanowires/nanorods have recently attracted significant interest as electrocatalysts. In this work, we report an effective solvothermal method for the direct preparation of 3D Pt-Co nanowire assemblies (NWAs) with tunable composition. The composition- and structure-dependent electrocatalytic performance is thoroughly investigated. Because of the bimetallic synergetic effect and unique structural advantage, the as-prepared 3D Pt3Co NWA outperforms commercial Pt/carbon and Pt black catalysts and even 3D Pt NWA. The electrochemical results demonstrate that the 3D Pt3Co NWA is indeed a promising electrocatalyst with enhanced catalytic activity and improved durability for practical electrocatalytic applications.read more
Citations
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Ultralow-loading platinum-cobalt fuel cell catalysts derived from imidazolate frameworks.
Lina Chong,Jianguo Wen,Joseph Kubal,Joseph Kubal,Fatih Şen,Jianxin Zou,Jeffery P. Greeley,Maria K. Y. Chan,Heather M. Barkholtz,Wenjiang Ding,Di-Jia Liu +10 more
TL;DR: A method of preparing highly active yet stable electrocatalysts containing ultralow-loading platinum content by using cobalt or bimetallic cobalt and zinc zeolitic imidazolate frameworks as precursors is described.
Journal ArticleDOI
Design of Efficient Bifunctional Oxygen Reduction/Evolution Electrocatalyst: Recent Advances and Perspectives
TL;DR: In this paper, the authors introduce the fundamentals of bifunctional ORR/OER electrocatalysis in rechargeable metal-air battery, a promising technology to meet the energy requirements for various applications.
Journal ArticleDOI
Engineering Ordered and Nonordered Porous Noble Metal Nanostructures: Synthesis, Assembly, and Their Applications in Electrochemistry
TL;DR: Nanostructures: Synthesis, Assembly, and Their Applications in Electrochemistry
Journal ArticleDOI
A Novel Potassium-Ion-Based Dual-Ion Battery
TL;DR: As the Sn foil simultaneously acts as the anode material and the current collector, dead load and dead volume of the battery can be greatly reduced, thus the energy density of the K-DIB is further improved.
Journal ArticleDOI
Shape-Control of Pt-Ru Nanocrystals: Tuning Surface Structure for Enhanced Electrocatalytic Methanol Oxidation.
TL;DR: A general synthesis of ultrathin PtRu nanocrystals with tunable morphologies through a one-step solvothermal approach and a systematic investigation of the structure-directing effects of different surfactants and the formation mechanism by control experiments and time-dependent studies is reported.
References
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Journal ArticleDOI
Improved Oxygen Reduction Activity on Pt3Ni(111) via Increased Surface Site Availability
Vojislav R. Stamenkovic,Vojislav R. Stamenkovic,Ben Fowler,Bongjin Simon Mun,Guofeng Wang,Philip N. Ross,Chris Lucas,Nenad M. Markovic +7 more
TL;DR: It is demonstrated that the Pt3Ni( 111) surface is 10-fold more active for the ORR than the corresponding Pt(111) surface and 90-foldMore active than the current state-of-the-art Pt/C catalysts for PEMFC.
Journal ArticleDOI
Trends in electrocatalysis on extended and nanoscale Pt-bimetallic alloy surfaces
Vojislav R. Stamenkovic,Vojislav R. Stamenkovic,Bongjin Simon Mun,Bongjin Simon Mun,Matthias Arenz,Karl Johann Jakob Mayrhofer,Chris Lucas,Guofeng Wang,Philip N. Ross,Nenad M. Markovic +9 more
TL;DR: The electrocatalytic trends established for extended surfaces are used to explain the activity pattern of Pt(3)M nanocatalysts as well as to provide a fundamental basis for the catalytic enhancement of cathode catalysts.
Journal ArticleDOI
Pd-Pt Bimetallic Nanodendrites with High Activity for Oxygen Reduction
Byungkwon Lim,Majiong Jiang,Pedro H. C. Camargo,Eun Chul Cho,Jing Tao,Xianmao Lu,Yimei Zhu,Younan Xia +7 more
TL;DR: Pd-Pt bimetallic nanodendrites consisting of a dense array of Pt branches on a Pd core by reducing K2PtCl4 with L-ascorbic acid in the presence of uniform Pd nanocrystal seeds in an aqueous solution showed relatively large surface areas and particularly active facets toward the oxygen reduction reaction (ORR), the rate-determining step in a proton-exchange membrane fuel cell.
Journal ArticleDOI
Bimetallic Nanocrystals: Liquid‐Phase Synthesis and Catalytic Applications
Dingsheng Wang,Yadong Li +1 more
TL;DR: This review highlights the recent progress in the chemical synthesis of bimetallic NCs and the control over morphology, size, composition, and structure of bimodal NCs as well as the exploration of their properties and applications.
Journal ArticleDOI
Oleylamine in Nanoparticle Synthesis
TL;DR: In this paper, the use of oleylamine (OAm) as a versatile reagent for the synthesis of various nanoparticle systems is discussed, including the ability of OAm to act as a surfactant, solvent, and reducing agent, as a function of other synthesis parameters.
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