自支持的氧降低电催化剂是由富含的聚合物网络制成的
Yong Zhao1, Kazuya Watanabe, Kazuhito Hashimoto
1ERATO/JST, HASHIMOTO Light Energy Conversion Project, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Journal of the American Chemical Society
|November 16, 2012
概括
研究人员开发了一种新的富含的聚合物催化剂. 这种非贵金属催化剂显著提高了微生物燃料电池的性能,超过了类催化剂的性能.
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:
- 开发高效和成本效益的催化剂对于电化学应用至关重要.
- 非贵金属催化剂作为白金组金属的替代品非常受欢迎.
- 网络聚合物为催化剂设计提供独特的结构和化学特性.
研究的目的:
- 合成和评估一种新的富含的网络聚合物作为非贵金属催化剂.
- 为了研究一个Co-/Fe-协调性热解聚合物的氧降解反应 (ORR) 活性.
- 评估微生物燃料电池 (MFC) 中开发的催化剂的性能.
主要方法:
- 使用 2,6-diaminopyridine 作为单体合成一个富含的网络聚合物.
- 聚合物的热解以创建金属协调站点.
- 在中性介质中对氧降解反应 (ORR) 的催化剂进行电化学评估.
- 微生物燃料电池 (MFC) 的制造和测试,催化剂在正极.
主要成果:
- 协同/Fe-协调性热解聚合物显示出高特异性氧降解活性 (开始电位:0.87V与RHE,半波电位:0.76V与RHE).
- 催化剂没有显示有机物对其在中性介质中的活性产生交叉作用.
- 配备这种催化剂的MFC实现了与商用20%Pt/C催化剂相比的两倍以上的输出功率.
结论:
- 开发的富含的网络聚合物是ORR的高效非贵金属催化剂.
- 这种新型催化剂为微生物燃料电池等应用提供了一个有希望的,具有成本效益的替代品.
- 聚合物的独特结构提供了丰富的金属协调点,增强了催化活性和稳定性.
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
09:18Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications
Published on: June 21, 2017
相关概念视频
Electron Carriers
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
Catalysis
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
