期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 44, 页码 30090-30098出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b08972
关键词
atomic layer deposition; heterogeneous catalysts; direct methanol solid oxide fuel cell; nickel; ruthenium
资金
- LG Yonam Foundation
- International Research & Development Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2014K1A3A1A47067412]
- Korea University Internal Grant
- Brain Korea 21 Plus program [21A20131712520]
- National Research Foundation of Korea [2014K1A3A1A47067412] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Nickel and ruthenium bimetallic catalysts were heterogeneously synthesized via atomic layer deposition (ALD) for use as the anode of direct methanol solid oxide fuel cells (DMSOFCs) operating in a low-temperature range. The presence of highly dispersed ALD Ru islands over a porous Ni mesh was confirmed, and the Ni/ALD Ru anode microstructure was observed. Fuel cell tests were conducted using Ni-only and Ni/ALD Ru anodes with approximately 350 mu m thick gadolinium-doped ceria electrolytes and platinum cathodes. ThC performance of fuel cells was assessed using pure methanol at operating temperatures of 300-400 degrees C. Micromorphological changes of the anode after cell operation were investigated, and the content of adsorbed carbon on the anode side of the operated samples was measured. The difference in the maximum power density between samples utilizing Ni/ALD Ru and Pt/ALD Ru, the latter being the best catalyst for direct methanol fuel cells, was observed to be less than 7% at 300 degrees C and 30% at 350 degrees C. The improved electrochemical activity of the Ni/ALD Ru anode compared to that of the Ni-only anode, along with the reduction of the number of catalytically active sites due to agglomeration of Ni and carbon formation on the Ni surface as compared to Pt, explains this decent performance.
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