Effects of Liquid Electrolytes on the Charge–Discharge Performance of Rechargeable Lithium/Sulfur Batteries: Electrochemical and in-Situ X-ray Absorption Spectroscopic Studies

2011 ◽  
Vol 115 (50) ◽  
pp. 25132-25137 ◽  
Author(s):  
Jie Gao ◽  
Michael A. Lowe ◽  
Yasuyuki Kiya ◽  
Héctor D. Abruña
Keyword(s):  
Spectroscopic Studies ◽  
Discharge Performance ◽  
X Ray ◽  
Liquid Electrolytes ◽  
Lithium Sulfur Batteries ◽  
X Ray Absorption ◽  
Lithium Sulfur ◽  
Charge Discharge

Revealing the charge/discharge mechanism of Na–O2 cells by in situ soft X-ray absorption spectroscopy

2018 ◽  
Vol 11 (8) ◽  
pp. 2073-2077 ◽  
Author(s):  
Mohammad N. Banis ◽  
Hossein Yadegari ◽  
Qian Sun ◽  
Tom Regier ◽  
Teak Boyko ◽  
...  
Keyword(s):  
Energy Density ◽  
Absorption Spectroscopy ◽  
High Energy ◽  
High Energy Density ◽  
X Ray ◽  
Discharge Mechanism ◽  
X Ray Absorption ◽  
Charge Discharge

Developing high energy density batteries, such as metal–air systems, requires a good understanding of their underlying electrochemical principles.

scholarly journals In Situ X-ray Absorption Spectroscopy Studies of Discharge Reactions in a Thick Cathode of a Lithium Sulfur Battery

2016 ◽  
Vol 164 (2) ◽  
pp. A18-A27 ◽  
Author(s):  
Kevin H. Wujcik ◽  
Dunyang Rita Wang ◽  
Tod A. Pascal ◽  
David Prendergast ◽  
Nitash P. Balsara
Keyword(s):  
Absorption Spectroscopy ◽  
X Ray ◽  
Lithium Sulfur Battery ◽  
Spectroscopy Studies ◽  
Sulfur Battery ◽  
X Ray Absorption ◽  
Lithium Sulfur

scholarly journals X-ray Absorption Spectra of Dissolved Polysulfides in Lithium–Sulfur Batteries from First-Principles

2014 ◽  
Vol 5 (9) ◽  
pp. 1547-1551 ◽  
Author(s):  
Tod A. Pascal ◽  
Kevin H. Wujcik ◽  
Juan Velasco-Velez ◽  
Chenghao Wu ◽  
Alexander A. Teran ◽  
...  
Keyword(s):  
Absorption Spectra ◽  
First Principles ◽  
X Ray ◽  
Lithium Sulfur Batteries ◽  
X Ray Absorption ◽  
Lithium Sulfur

Investigation of the reaction mechanism of lithium sulfur batteries in different electrolyte systems by in situ Raman spectroscopy and in situ X-ray diffraction

2017 ◽  
Vol 1 (4) ◽  
pp. 737-747 ◽  
Author(s):  
W. Zhu ◽  
A. Paolella ◽  
C.-S. Kim ◽  
D. Liu ◽  
Z. Feng ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Lithium Metal ◽  
X Ray Diffraction ◽  
In Situ Raman Spectroscopy ◽  
X Ray ◽  
In Situ Raman ◽  
Lithium Sulfur Batteries ◽  
Sulfur Battery ◽  
Lithium Sulfur

In liithium–sulfur battery the lithium metal surface was analyzed by in situ Raman spectroscopy.

scholarly journals In situ X-ray absorption spectroscopic studies of TiO2 photocatalytic active sites for degradation of trace CHCl3 in drinking water

2021 ◽  
Vol 28 (6) ◽  
Author(s):  
T.-L. Hsiung ◽  
L.-W. Wei ◽  
H.-L. Huang ◽  
H. Paul Wang
Keyword(s):  
Drinking Water ◽  
Photocatalytic Degradation ◽  
Active Sites ◽  
Spectroscopic Studies ◽  
Band Gap Energy ◽  
Disinfection Byproducts ◽  
Edge Structure ◽  
X Ray ◽  
X Ray Absorption

Toxic disinfection byproducts such as trihalomethanes (e.g. CHCl3) are often found after chlorination of drinking water. It has been found that photocatalytic degradation of trace CHCl3 in drinking water generally lacks an expected relationship with the crystalline phase, band-gap energy or the particle sizes of the TiO2-based photocatalysts used such as nano TiO2 on SBA-15 (Santa Barbara amorphous-15), TiO2 clusters (TiO2–SiO2) and atomic dispersed Ti [Ti-MCM-41 (Mobil Composition of Matter)]. To engineer capable TiO2 photocatalysts, a better understanding of their photoactive sites is of great importance and interest. Using in situ X-ray absorption near-edge structure (XANES) spectroscopy, the A1 (4969 eV), A2 (4971 eV) and A3 (4972 eV) sites in TiO2 can be distinguished as four-, five- and six- coordinated Ti species, respectively. Notably, the A2 Ti sites that are the main photocatalytic species of TiO2 are shown to be accountable for about 95% of the photocatalytic degradation of trace CHCl3 in drinking water (7.2 p.p.m. CHCl3 gTiO2 −1 h−1). This work reveals that the A2 Ti species of a TiO2-based photocatalyst are mainly responsible for the photocatalytic reactivity, especially in photocatalytic degradation of CHCl3 in drinking water.

scholarly journals Exploring reaction dynamics in lithium–sulfur batteries by time-resolved operando sulfur K-edge X-ray absorption spectroscopy

2019 ◽  
Vol 55 (34) ◽  
pp. 4993-4996 ◽  
Author(s):  
Enyue Zhao ◽  
Junyang Wang ◽  
Feng Li ◽  
Zheng Jiang ◽  
Xiao-Qing Yang ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Reaction Dynamics ◽  
Conversion Process ◽  
Time Resolved ◽  
X Ray ◽  
Lithium Sulfur Batteries ◽  
X Ray Absorption ◽  
Sulfur Electrode ◽  
Lithium Sulfur

The multistep kinetic-determining conversion process of a sulfur electrode is directly revealed through time-resolved operando X-ray absorption spectroscopy.

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