相关实验视频

Updated: May 29, 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

在石墨碳外中封装的碳化纳米粒子:用于超稳定的Zn-空气电池的高效双功能氧气电催化剂

Hao Zheng¹, Lin Lin¹, Zhenghao Chen¹

¹School of Energy and Environmental Engineering, The University of Science and Technology Beijing, Beijing 100083 PR China.

Journal of colloid and interface science

|February 6, 2025

概括

一种新的催化剂为可充电的空气电池 (ZAB) 提供了高性能. 这种非贵金属催化剂表现出卓越的活性和耐用性,推进了储能技术.

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
纳米技术纳米技术

背景情况:

可充电的空气电池 (ZAB) 需要高效,低成本的双功能氧气电催化剂.
目前的催化剂通常依赖于昂贵的贵金属,限制了实际应用.

研究的目的:

为ZABs开发一种具有成本效益,高度活性和强大的双功能氧气电催化剂.
为了研究纳米粒子在N-化石墨碳中封装的结构-活性关系.

主要方法:

使用一种简单的单步烧解方法,在N-doped石墨碳 (Co@NC) 中合成纳米颗粒.
进行了电化学表征 (氧减少和进化反应).
用密度函数理论 (DFT) 的计算来理解催化机制.

主要成果:

优化的催化剂 (Co@NC-800) 显示了半波潜力为0.82V的ORR和350mV的OER在10mA cm-2.2的超电位.
DFT计算显示了在活性位点的电子再分配,解释了双功能活动.
使用 Co@NC-800 的 ZAB 实现了 213.6 mW cm−2 的峰值功率密度和高特异性容量 (774.1 mAh gZn−1).

结论:

与贵金属催化剂相比,合成的Co@NC-800催化剂表现出优越的性能和耐用性.
这项工作提出了一个可行的策略,用于设计可充电ZAB的高效非贵金属电催化剂.

关键词:

双功能的氧气电催化剂.纳米粒子是的纳米粒子.核心-外结构核心-外结构非高贵的催化剂是非高贵的催化剂在Zn-空气电池.

更多相关视频

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Published on: April 10, 2018

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

相关概念视频

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...