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在碳海绵上支持FeNi,用于在直接的尿素燃料电池中有效氧化尿素

Xianzhi Yin¹, Kai Zhu¹, Ke Ye¹

¹Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.

Journal of colloid and interface science

|October 13, 2023

概括

研究人员开发了一种用于直接尿素燃料电池 (DUFC) 的新型催化剂 (FeNi@NCS). 这项创新可实现高效的废水净化和发电,推进可持续能源解决方案.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
环境工程环境工程

背景情况:

直接尿素燃料电池 (DUFC) 为废水处理和能源发电提供了一种可持续的方法.
开发高效的催化剂对于提高DUFC性能和克服目前的局限性至关重要.

研究的目的:

合成和描述一种用于改善尿素电氧化的新型复合催化剂 (FeNi@NCS).
为了评估FeNi@NCS催化剂在直接尿液-过氧化燃料电池 (DUrHPFC) 的性能.

主要方法:

电沉积和化学还原被用来合成类似石榴种子的Ni纳米块和Fe纳米片.
合成的纳米材料在化碳海绵 (NCS) 基质上进行了支.
通过电化学测量评估了催化活性和燃料电池性能.

主要成果:

该FeNi@NCS复合物表现出高催化电流密度为625 mA cm-2和低Tafel斜率为42.51 mV dec-1的尿素电氧化.
组装的DUrHPFC实现了0.98V的开放电路电压和9.61 mW cm-2.2的峰值功率密度.
N-doped碳海绵促进了高效的气体逃逸,提高了整体性能.

结论:

FeNi@NCS催化剂显示出有效的尿素电氧化具有显著的潜力.
这一进步为阻碍开发基于尿素的绿色能源循环的挑战提供了有希望的解决方案.
该研究强调了DUFCs在同时处理废水和发电方面的可行性.

关键词:

直接尿液-过氧化燃料电池燃料电池电极定位是一种电极定位.在FeNi复合材料中.有N-doped碳海绵的碳海绵.尿素电氧化尿素的电氧化.

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