Synchrotron radiation in situ X-ray absorption fine structure and in situ X-ray diffraction analysis of a high-performance cobalt catalyst towards the oxygen reduction reaction

2017 ◽  
Vol 19 (45) ◽  
pp. 30749-30755
Author(s):  
Haiying Qin ◽  
Longxia Lin ◽  
Junkang Jia ◽  
Huangliang Ni ◽  
Yan He ◽  
...  
Keyword(s):  
Fine Structure ◽  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
High Performance ◽  
Cobalt Catalyst ◽  
Reduction Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption

The evolution of metallic Co to Co(OH)2 and then to CoOOH during the ORR was revealed by in situ XRD combined with in situ XAFS tests.

Synchrotron radiation X-ray diffraction analysis for Bi-based oxide superconducting wire

2010 ◽  
Vol 1 (SRMS-7) ◽  
Author(s):  
S. Uemura ◽  
J. Iihara ◽  
Y. Saito ◽  
K. Yamaguchi ◽  
J. Matsumoto ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Diffraction Analysis ◽  
Crystal Orientation ◽  
Power Transmission ◽  
Process Conditions ◽  
X Ray Diffraction ◽  
Cooling Process ◽  
X Ray ◽  
Superconducting Wire

The Bi-based oxide superconducting wire is one of the most promising materials for practical uses such as electric power transmission, electromagnets and so on. For the higher performances required in these applications, it is necessary to increase the critical current (Ic). We have carried out synchrotron radiation X-ray diffraction analysis to improve our manufacturing processes and thus to achieve higher Ic. We have performed in situ X-ray diffraction measurements during the sintering and cooling processes, and observed the decrease of Bi-2223(=(Bi,Pb)2Sr2Ca2Cu3Ox) phase during the cooling process. We have also evaluated the distribution of the crystal orientation in whole wire thickness, by measuring the rocking curves. We have observed that the distribution of the crystal orientation is improved by a refinement of the process conditions.

In situ X-ray diffraction and X-ray absorption spectroscopy of electrocatalysts for energy conversion reactions

2020 ◽  
Vol 8 (37) ◽  
pp. 19079-19112 ◽  
Author(s):  
Chia-Jui Chang ◽  
Yanping Zhu ◽  
Jiali Wang ◽  
Hsiao-Chien Chen ◽  
Ching-Wei Tung ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Recent Progress ◽  
Reduction Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
X Ray Absorption ◽  
Made In

This review summarizes the recent progress made in electrocatalysts with regard to oxygen evolution reaction, hydrogen evolution reaction, and CO2 reduction reaction by means of in situ X-ray diffraction and X-ray absorption spectroscopy.

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