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载碳银纳米粒子作为高性能阴极催化剂用于 H2/O2 阴离子交换膜燃料电池。

Carbon supported Ag nanoparticles as high performance cathode catalyst for H2/O2 anion exchange membrane fuel cell.

机构信息

Department of Chemical Engineering, Michigan Technological University Houghton, MI, USA.

出版信息

Front Chem. 2013 Sep 23;1:16. doi: 10.3389/fchem.2013.00016. eCollection 2013.

DOI:10.3389/fchem.2013.00016
PMID:24790944
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3982539/
Abstract

A solution phase-based nanocapsule method was successfully developed to synthesize non-platinum metal catalyst-carbon supported Ag nanoparticles (Ag/C). XRD patterns and TEM image show Ag nanoparticles with a small average size (5.4 nm) and narrow size distribution (2-9 nm) are uniformly dispersed on the carbon black Vulcan XC-72 support. The intrinsic activity and pathway of oxygen reduction reaction (ORR) on the Ag/C and commercial Pt/C were investigated using rotating ring disk electrode (RRDE) tests at room temperature. The results confirmed that the 4-electron pathway of ORR proceeds on small Ag nanoparticles, and showed comparable ORR activities on the self-prepared Ag/C and a commercial Pt/C. A single H2-O2 anion exchange membrane fuel cell (AEMFC) with the Ag/C cathode catalyst exhibited an open circuit potential of 0.98 V and a peak power density of 190 mW/cm(2) at 80°C.

摘要

一种基于溶液相的纳米胶囊法成功地被开发出来，用于合成非铂金属催化剂-碳负载的银纳米粒子（Ag/C）。XRD 图谱和 TEM 图像显示，银纳米粒子具有较小的平均粒径（5.4nm）和较窄的粒径分布（2-9nm），均匀分散在碳黑 Vulcan XC-72 载体上。使用旋转环盘电极（RRDE）测试在室温下对 Ag/C 和商业 Pt/C 上的氧还原反应（ORR）的本征活性和途径进行了研究。结果证实，ORR 的 4 电子途径在小的 Ag 纳米粒子上进行，并且在自制备的 Ag/C 和商业 Pt/C 上表现出可比的 ORR 活性。具有 Ag/C 阴极催化剂的单质子交换膜燃料电池（AEMFC）在 80°C 时表现出 0.98V 的开路电位和 190mW/cm(2)的峰值功率密度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/97a9fb486b59/fchem-01-00016-g0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/c96f6b26f790/fchem-01-00016-g0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/17653ccf6c26/fchem-01-00016-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/d54a9a0dfcd1/fchem-01-00016-g0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/97a9fb486b59/fchem-01-00016-g0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/c96f6b26f790/fchem-01-00016-g0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/17653ccf6c26/fchem-01-00016-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/d54a9a0dfcd1/fchem-01-00016-g0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3cc2/3982539/97a9fb486b59/fchem-01-00016-g0003.jpg

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