scholarly journals Electron Energy-Loss Spectroscopy and Energy-Filtered TEM Imaging for the in situ Assessment of Reduction-Oxidation Reactions in Ni-Based Solid Oxide Fuel Cells

2016 ◽  
Vol 22 (S3) ◽  
pp. 1328-1329
Author(s):  
Q. Jeangros ◽  
A.B. Aebersold ◽  
T.W. Hansen ◽  
J.B. Wagner ◽  
R.E. Dunin-Borkowski ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Loss ◽  
Solid Oxide Fuel Cells ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Oxidation Reactions ◽  
Electron Energy Loss

Investigation of Switching Mechanism in HfO2-Based Oxide Resistive Memories by In-Situ Transmission Electron Microscopy and Electron Energy Loss Spectroscopy

2017 ◽  
Author(s):  
T. Dewolf ◽  
D. Cooper ◽  
N. Bernier ◽  
V. Delaye ◽  
A. Grenier ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Hafnium Dioxide ◽  
Switching Mechanism ◽  
Transmission Electron ◽  
Electron Energy Loss

Abstract Forming and breaking a nanometer-sized conductive area are commonly accepted as the physical phenomenon involved in the switching mechanism of oxide resistive random access memories (OxRRAM). This study investigates a state-of-the-art OxRRAM device by in-situ transmission electron microscopy (TEM). Combining high spatial resolution obtained with a very small probe scanned over the area of interest of the sample and chemical analyses with electron energy loss spectroscopy, the local chemical state of the device can be compared before and after applying an electrical bias. This in-situ approach allows simultaneous TEM observation and memory cell operation. After the in-situ forming, a filamentary migration of titanium within the dielectric hafnium dioxide layer has been evidenced. This migration may be at the origin of the conductive path responsible for the low and high resistive states of the memory.

In Situ Electron Holography and EELS of Hetero-Interfaces in Solid Oxide Fuel Cells

2012 ◽  
Vol 18 (S2) ◽  
pp. 1292-1293 ◽  
Author(s):  
T. Tanji ◽  
A.H. Tavabi
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Electron Holography ◽  
Oxide Fuel

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

In Situ Seal Integrity Sensing for Solid Oxide Fuel Cells

2007 ◽  
pp. 85-96
Author(s):  
John Olenick ◽  
Viswanathan Venkateswaran ◽  
Tim Curry ◽  
Robert Bourdelaise ◽  
Eli Richards ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Seal Integrity

In Situ Optical Studies of Solid Oxide Fuel Cells Operating With Dry and Humidified Oxygenated Fuels

2019 ◽  
Vol 35 (1) ◽  
pp. 2789-2798 ◽  
Author(s):  
Bryan Eigenbrodt ◽  
John Kirtley ◽  
Robert A. Walker
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Optical Studies ◽  
Oxygenated Fuels
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