一个色素桥架共价三酸聚合物衍生的电极,用于高效的生产
Aijian Wang1, Xin Yang1, Fengqiang Zhang1
1School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China. wajujs@ujs.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|August 19, 2024
概括
碳支持的化纳米粒子 (Co5.47N/N,Co-C-800) 显示出电催化在溶液中的出色性能. 化温度对材料有很大的影响.
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:
- 电催化对于可再生能源技术至关重要.
- 组合控制和微观结构显著影响催化剂性能.
- 添加碳材料是电催化剂的有希望的支物.
研究的目的:
- 为了从新型前体中合成和表征N,Co-codoped碳支持的Co5.47N纳米颗粒 (Co5.47N/N,Co-C-800).
- 在性介质中评估合成材料的电催化活性,用于演化反应 (HER).
- 研究热解温度对材料结构和HER性能的影响.
主要方法:
- 一种富含的氨酸桥接共价三聚合物 (CoTAPPCC) 的合成.
- 在不同温度 (800,900,1000°C) 下对CoTAPPCC进行热解,以获得Co-N-C催化剂.
- 使用各种光谱技术进行表征 (例如XRD,XPS,TEM).
- 在1.0M KOH中对HER活性进行电化学评估,使用循环电压测量和时测量等技术.
主要成果:
- 与CoCo2O4/N,Co-C-900和CoO/N,Co-C-1000相比,Co5.47N/N,Co-C-800表现出更高的HER活性,而CoCo2O4/N,Co-C-900和CoO/N,Co-C-1000则表现出更高的HER活性.
- 对于Co5.47N/N,Co-C-800达到10 mA cm-2的超电位是76 mV,达到100 mA cm-2的超电位是229 mV.
- 结构和形态分析揭示了影响催化活性的温度依赖的变化.
- 催化剂表现出色,性能优于许多最先进的HER电催化剂.
结论:
- 来自CoTAPPCC的N,Co-codoped碳支持的Co5.47N纳米粒子是高效的HER电催化剂在1.0M KOH.
- 化温度是控制材料的组成,微观结构和电催化性能的关键参数.
- 这项研究提供了通过受控合成和热处理来设计用于生产的先进电催化剂的见解.
更多相关视频
08:40Synthesis 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
3.5K
06:39Author Spotlight: Design and Evaluation of Au-Electroplated Carbon Fiber Cloth Electrodes for Hydrogen Peroxide Fuel Cells
Published on: October 20, 2023
2.7K
相关概念视频
Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Production of Pharmaceuticals
Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under sterile, tightly...
