期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 47, 期 33, 页码 15035-15043出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2022.03.010
关键词
Oxygen reduction reaction; Titanium nitride; Dandelion-like structure; PEMFCs; Durability
资金
- National Natural Science Foundation of China [21905055]
- PhD Start-up Fund of Natural Science Foundation of Guangdong Province [2018A030310514]
- Educational Commission of Guangdong Province [2017KQNCX064]
- Guangdong University of Technology [220413207, 220418129]
- Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province
- Science and Technology Planning Project of Guangdong Province [2016A010103028]
- National Natural Science Foundation of Guangdong Province [2018A0303130223]
The main challenges in proton-exchange membrane fuel cells (PEMFCs) are low catalyst activity, precious metal degradation, and carbon carrier corrosion. In this study, a non-carbon material with dendritic structures was synthesized as a carrier for platinum nanoparticles, which showed excellent activity and stability for the cathode oxygen reduction reaction.
The main challenges currently existing in proton-exchange membrane fuel cells (PEMFCs) are (1) the slow chemical reaction kinetics at cathode oxygen reduction with high cost of precious metal as catalysts, (2) the degradation of precious metals, (3) the corrosion of carbon carriers. A dandelion-like structure of titanium nitride nanospheres with abundant dendritic structures on the surface was synthesized, This non-carbon material was used as a carrier for platinum nanoparticles, which were deposited on the carrier using an electrochemical pulse deposition method. At 0.9 V (in comparison to RHE), the catalysts perform admirably for oxygen reduction reaction at cathode, with a mass activity of 0.44 mA g(-1)Pt and specific activity of 0.33 mA cm(-2). Under the same test conditions, the prepared catalysts demonstrate better stability than commercial Pt/C catalysts, main-taining a high level of activity (61% of the initial value) after 3000 consecutive cycles. This research provides a framework for the development of long-lasting non-carbon catalysts with low-Pt loading. (c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据