Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

3.1K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
3.1K
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

76.2K
Oxidation–Reduction Reactions
76.2K
Electrochemical Cells01:28

Electrochemical Cells

16
Electrochemical cells are systems that convert chemical energy into electrical energy or use electrical energy to drive chemical reactions. They consist of two electrodes in contact with an electrolyte, where redox reactions enable electron transfer. Most electrochemical cells include two half-cells connected by an external wire for electron flow and a salt bridge for ion flow. The salt bridge contains an electrolyte solution and maintains charge neutrality by allowing ions—not...
16
Bonding in Metals02:32

Bonding in Metals

54.2K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
54.2K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Phase Engineering of Pd-Te Hexagonal Nanoplates for Enhancing Nitrogen Oxidation.

Journal of the American Chemical Society·2026
Same author

Goblet-Like P-Driven Pt<sub>3</sub>Mn Alloys Enable High Power Density and 1000 h Durability in Practical Fuel Cells.

Journal of the American Chemical Society·2026
Same author

Ammonia mediated electrostatic adsorption synthesis of paired subnanoclusters with enhanced hydrogen oxidation performance.

Nature communications·2026
Same author

Isolating Coupled Effects by Interface Editing of Intermetallic Heterostructures for Fuel Cells.

Journal of the American Chemical Society·2026
Same author

Molybdenum-Pocket Driven Low-Platinum Oxygen Reduction Catalysts for 100-Watt-Scale Fuel Cell Stacks.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Phthalocyanine-Derived Platform toward Integrated Ultralow-Platinum Fuel Cell Catalysts.

Nano letters·2026

相关实验视频

Updated: Feb 27, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

8.4K

PtPb/PtNi金属间核心/原子层外八面,用于高效的氧降解电催化

Lingzheng Bu1, Qi Shao1, Bin E1

  • 1College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Jiangsu 215123, China.

Journal of the American Chemical Society
|June 29, 2017
PubMed
概括

研究人员开发了新的--八面催化剂,用于增强燃料电池中的氧降解反应. 与商业催化剂相比,这些金属间纳米材料的活性和耐久性显著提高.

更多相关视频

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

4.3K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

23.0K

相关实验视频

Last Updated: Feb 27, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
09:02

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance

Published on: April 27, 2018

8.4K
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
08:40

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

4.3K
On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method
12:12

On the Preparation and Testing of Fuel Cell Catalysts Using the Thin Film Rotating Disk Electrode Method

Published on: March 16, 2018

23.0K

科学领域:

  • 材料科学
  • 电化学
  • 纳米技术

背景情况:

  • 高性能基纳米材料对于燃料电池反应至关重要.
  • 控制催化剂表面成分,暴露面和内部结构仍然具有挑战性.

研究的目的:

  • 开发一种简单的化学方法来合成新的金属间Pt-Pb-Ni八面体.
  • 研究这些新纳米结构的电催化活性和稳定性.

主要方法:

  • 简单的化学合成金属间Pt-Pb-Ni八面体.
  • 氧降解反应 (ORR) 的电催化性能测试.
  • 通过循环电压测量进行耐用性评估.

主要成果:

  • 成功合成了一种新的金属间Pt-Pb-Ni八面体.
  • 优化的PtPb1.12Ni0.14八面体显著增强了ORR的特异性和质量活动 (大约1. 比Pt/C高出20倍和11倍.
  • 催化剂表现出极好的稳定性,持续超过15,000个周期,活动损失最小.

结论:

  • 开发的金属间Pt-Pb-Ni八面体代表了一个有前途的基于Pt的新类电催化剂.
  • 这些催化剂为燃料电池和其他电化学应用提供了更高的性能.
  • 简单的合成方法为设计先进的纳米材料提供了途径.