相关实验视频

Updated: Jan 6, 2026

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

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

Published on: April 27, 2018

几何顺序的三角形原子单元Zn-PtCo金属间,用于高效和持久的燃料电池

Liangbin Liu^1,2, Yang Yang³, Changhong Zhan²

¹Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen 361005, China.

|October 30, 2025

概括

一种新的Zn-装饰的PtCo金属间催化剂 (Zn-PtCo IMC) 显著提高了质子交换膜燃料电池的性能和耐用性. 这一突破解决了的溶解,提高了清洁能源应用的催化剂稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

质子交换膜燃料电池 (PEMFC) 需要高效和稳定的氧降解反应 (ORR) 催化剂.
- (PtCo) 间金属具有前景,但由于溶解而受到影响,限制了它们的应用.

研究的目的:

为PEMFCs开发一种稳定且高度活性的Pt型ORR催化剂.
为了减轻PtCo金属间催化剂中的溶解.

主要方法:

通过将 Zn 纳入 PtCo 网格,合成部分地形有序的 Zn 装饰的 PtCo 间金属 (Zn-PtCo IMC).
基于Zn-PtCo IMC的燃料电池的制造和测试.
加速耐久性测试 (120k周期).
深入的机制学研究.

主要成果:

Zn-PtCo IMC 呈现出稳定的三角形原子单元结构,提高了耐用性.
基于Zn-PtCo IMC的燃料电池实现了1.98W cm-2的功率密度,超过了商业Pt/C和混乱的Zn-PtCo.
催化剂在120k循环后保留了61.2%的质量活动.

结论:

Zn-PtCo IMC中的几何顺序结构有效地减弱了氧吸附,并增加了扩散能量障碍.
这导致与传统催化剂相比,活性和耐用性显著提高.
-PtCo IMC代表了先进的PEMFC应用的有希望的催化剂.

关键词:

这是一种PtCo金属间金属.燃料电池燃料电池的使用情况在几何上有序的.长期稳定的长期稳定性氧减少反应反应的氧减少反应.

更多相关视频

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts

Solar-Driven Electrochemical Green Fuel Production from CO₂ and Water Using Ti₃C₂T_x MXene-Supported CuZn and NiCo Catalysts

Published on: November 7, 2025

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

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

相关概念视频

Metallic Solids

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....

Ionic Crystal Structures

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...