In Situ Raman Observation of Oxygen Activation and Reaction at Platinum–Ceria Interfaces during CO Oxidation

2021 ◽  
Vol 143 (38) ◽  
pp. 15635-15643
Author(s):  
Di-Ye Wei ◽  
Mu-Fei Yue ◽  
Si-Na Qin ◽  
Sa Zhang ◽  
Yuan-Fei Wu ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Oxygen Activation ◽  
In Situ Raman

New insights on the defect sites evolution during CO oxidation over doped ceria nanocatalysts probed by in situ Raman spectroscopy

2020 ◽  
Vol 596 ◽  
pp. 117517 ◽  
Author(s):  
Enrico Sartoretti ◽  
Chiara Novara ◽  
Marco Fontana ◽  
Fabrizio Giorgis ◽  
Marco Piumetti ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Co Oxidation ◽  
Doped Ceria ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Defect Sites

“In-Situ Raman Spectroscopy of Electronic Processes in Fullerene Thin Films

2002 ◽  
Vol 725 ◽  
Author(s):  
S.B. Phelan ◽  
B.S. O'Connell ◽  
G. Farrell ◽  
G. Chambers ◽  
H.J. Byrne
Keyword(s):  
Thin Film ◽  
Indium Tin Oxide ◽  
Low Temperatures ◽  
In Situ Raman Spectroscopy ◽  
State Reduction ◽  
In Situ Raman ◽  
Linear Behavior ◽  
Current Voltage ◽  
Solid State Reduction

AbstractThe current voltage characteristics of C60 thin film sandwich structures fabricated by vacuum deposition on indium tin oxide (ITO) with an aluminium top electrode are presented and discussed. A strongly non-linear behavior and a sharp increase in the device conductivity was observed at relatively low voltages (∼2V), at both room and low temperatures (20K). At room temperature the system is seen to collapse, and in situ Raman measurements indicate a solid state reduction of the fullerene thin film to form a polymeric state. The high conductivity state was seen to be stable at elevated voltages and low temperatures. This state is seen to be reversible with the application of high voltages. At these high voltages the C60 film was seen to sporadically emit white light at randomly localized points analogous to the much documented Electroluminescence in single crystals.

In Situ Raman Spectroscopy Studies on La2CaB10O19 Crystal Growth

2020 ◽  
Vol 20 (10) ◽  
pp. 6604-6609
Author(s):  
Shanshan Liu ◽  
Guochun Zhang ◽  
Kai Feng ◽  
Yanyang Han ◽  
Tao He ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Crystal Growth ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman ◽  
Spectroscopy Studies

The use of in-situ Raman spectroscopy in investigating carbon materials as the anodes of alkali metal-ion batteries

Carbon ◽  
2021 ◽  
Vol 177 ◽  
pp. 428
Author(s):  
Xiaoqin Cheng ◽  
Huijun Li ◽  
Zhenxin Zhao ◽  
Yong-zhen Wang ◽  
Xiaomin Wang
Keyword(s):  
Raman Spectroscopy ◽  
Alkali Metal ◽  
Metal Ion ◽  
Carbon Materials ◽  
In Situ Raman Spectroscopy ◽  
Alkali Metal Ion ◽  
In Situ Raman

Calibration Methods to Circumvent Unknown Component Spectra for Quantitative in situ Raman Monitoring of Co-Polymerisation Reaction

2021 ◽  
Author(s):  
Wendy Rusli ◽  
Pavan Kumar Naraharisetti ◽  
Wee Chew
Keyword(s):  
Raman Spectroscopy ◽  
Reaction Monitoring ◽  
The Past ◽  
In Situ Raman ◽  
Calibration Methods ◽  
Unknown Component

The use of Raman spectroscopy for reaction monitoring has been successfully applied over the past few decades. One complication in such usage is the applicability for quantitative reaction studies. This...

An apparatus for in situ Raman spectroscopy of ion‐irradiated frozen targets

1991 ◽  
Vol 62 (7) ◽  
pp. 1743-1745 ◽  
Author(s):  
F. Spinella ◽  
G. A. Baratta ◽  
G. Strazzulla
Keyword(s):  
Raman Spectroscopy ◽  
In Situ Raman Spectroscopy ◽  
In Situ Raman

scholarly journals Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Tiancun Liu ◽  
Jinlong Wang ◽  
Yi Xu ◽  
Yifan Zhang ◽  
Yong Wang
Keyword(s):  
Reduction Method ◽  
Coulombic Efficiency ◽  
List Type ◽  
Lithium Metal ◽  
Metal Anode ◽  
In Situ Raman ◽  
Unique Model ◽  
Li Metal Anode ◽  
Pyridinic N

Highlights A facile method is adopted to obtain cucumber-like lithiophilic composite skeleton. Massive lithiophilic sites in cucumber-like lithiophilic composite skeleton can promote and guide uniform Li depositions. A unique model of stepwise Li deposition and stripping is determined. Abstract The uncontrolled formation of lithium (Li) dendrites and the unnecessary consumption of electrolyte during the Li plating/stripping process have been major obstacles in developing safe and stable Li metal batteries. Herein, we report a cucumber-like lithiophilic composite skeleton (CLCS) fabricated through a facile oxidation-immersion-reduction method. The stepwise Li deposition and stripping, determined using in situ Raman spectra during the galvanostatic Li charging/discharging process, promote the formation of a dendrite-free Li metal anode. Furthermore, numerous pyridinic N, pyrrolic N, and CuxN sites with excellent lithiophilicity work synergistically to distribute Li ions and suppress the formation of Li dendrites. Owing to these advantages, cells based on CLCS exhibit a high Coulombic efficiency of 97.3% for 700 cycles and an improved lifespan of 2000 h for symmetric cells. The full cells assembled with LiFePO4 (LFP), SeS2 cathodes and CLCS@Li anodes demonstrate high capacities of 110.1 mAh g−1 after 600 cycles at 0.2 A g−1 in CLCS@Li|LFP and 491.8 mAh g−1 after 500 cycles at 1 A g−1 in CLCS@Li|SeS2. The unique design of CLCS may accelerate the application of Li metal anodes in commercial Li metal batteries.

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