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一种用于提高铂催化剂耐腐蚀性的氮化钛@碳核壳载体。

A TiN@C core-shell support for improving Pt catalyst corrosion resistance.

作者信息

Zhang Hongyu, Liu Jia, Li Xiaolin, Duan Xiao, Yuan Mengchen, Cao Feng, Sun Kui, Zhang Yunbo, Wang Ying, Gu Zhengbin, Li Jia, Liu Jianguo

机构信息

Institute of Energy Power Innovation, North China Electric Power University Beijing Changping 102206 China

College of Engineering and Applied Sciences, Nanjing University 22 Hankou Road Nanjing 210093 China.

出版信息

RSC Adv. 2022 Sep 2;12(38):25035-25040. doi: 10.1039/d2ra02569h. eCollection 2022 Aug 30.

DOI:10.1039/d2ra02569h
PMID:36199880
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9438899/
Abstract

The corrosion of the support in proton-exchange membrane fuel cells (PEMFCs) is a major obstacle to their development. In this study, we combined the excellent corrosion resistance and strong metal-support interaction (SMSI) provided by titanium nitride (TiN) with the excellent conductivity of carbon to construct a TiN@C composite support composed of a TiN core and a porous carbon nanolayer shell. The composite TiN@C support exhibited a higher corrosion resistance than the carbon support during testing at 1.2 V ( RHE) for 400 h. Based on X-ray photoelectron spectroscopy and density functional theory calculations, the improved corrosion resistance originated from the excellent corrosion resistance of titanium nitride itself and SMSI between Pt and N in TiN. Overall, the high corrosion resistance of the TiN@C support can significantly improve PEMFC durability.

摘要

质子交换膜燃料电池（PEMFC）中载体的腐蚀是其发展的主要障碍。在本研究中，我们将氮化钛（TiN）提供的优异耐腐蚀性和强金属-载体相互作用（SMSI）与碳的优异导电性相结合，构建了一种由TiN核和多孔碳纳米层壳组成的TiN@C复合载体。在1.2 V（RHE）下测试400小时期间，复合TiN@C载体表现出比碳载体更高的耐腐蚀性。基于X射线光电子能谱和密度泛函理论计算，耐腐蚀性的提高源于氮化钛本身的优异耐腐蚀性以及TiN中Pt和N之间的SMSI。总体而言，TiN@C载体的高耐腐蚀性可显著提高PEMFC的耐久性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/8fb0b55f75c0/d2ra02569h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/5016cbb872a8/d2ra02569h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/29db9e657536/d2ra02569h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/da9dcbb2235e/d2ra02569h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/397bf05bc80b/d2ra02569h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/3e9091b14ac2/d2ra02569h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/8fb0b55f75c0/d2ra02569h-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/5016cbb872a8/d2ra02569h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/29db9e657536/d2ra02569h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/da9dcbb2235e/d2ra02569h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/397bf05bc80b/d2ra02569h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/3e9091b14ac2/d2ra02569h-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/97b8/9438899/8fb0b55f75c0/d2ra02569h-f6.jpg

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Size-Dependent Pt-TiO Strong Metal-Support Interaction.尺寸依赖的铂-二氧化钛强金属-载体相互作用
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