High-Temperature Proton Conduction in Covalent Organic Frameworks Interconnected with Nanochannels for Reverse Electrodialysis

2021 ◽  
Author(s):  
Rahul Singh ◽  
Daejoong Kim
Keyword(s):  
High Temperature ◽  
Proton Conduction ◽  
Covalent Organic Frameworks ◽  
Reverse Electrodialysis

Proton conduction in crystalline and porous covalent organic frameworks

2016 ◽  
Vol 15 (7) ◽  
pp. 722-726 ◽  
Author(s):  
Hong Xu ◽  
Shanshan Tao ◽  
Donglin Jiang
Keyword(s):  
Proton Conduction ◽  
Covalent Organic Frameworks

STUDY OF PROTON CONDUCTION IN YTTRIUM-DOPED BaZrO3 AT HIGH TEMPERATURE

2000 ◽  
Author(s):  
IBRAHIM ABU TALIB ◽  
MOULOUD LAIDOUDI ◽  
RAMLI OMAR
Keyword(s):  
High Temperature ◽  
Proton Conduction

scholarly journals Combined Intrinsic and Extrinsic Proton Conduction in Robust Covalent Organic Frameworks for Hydrogen Fuel Cell Applications

2020 ◽  
Vol 132 (9) ◽  
pp. 3707-3713 ◽  
Author(s):  
Yi Yang ◽  
Xueyi He ◽  
Penghui Zhang ◽  
Yassin H. Andaloussi ◽  
Hailu Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Conduction ◽  
Covalent Organic Frameworks ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel

Intrinsic proton conduction in 2D sulfonated covalent organic framework through the post-synthetic strategy

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yuwei Zhang ◽  
Chunzhi Li ◽  
Zhaohan Liu ◽  
Yuze Yao ◽  
Md. Mahmudul Hasan ◽  
...  
Keyword(s):  
Proton Conduction ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Covalent Organic Framework ◽  
Synthetic Strategy ◽  
Organic Framework

Two-dimensional covalent organic frameworks (2D COFs) have attracted much attentions in proton conduction, owing to their regular pore channels and easy functionalization. However, most of COFs required the loading of...

scholarly journals Proton conduction mechanism and phase transition of (Rb,K)3H(SeO4)2

2014 ◽  
Vol 70 (a1) ◽  
pp. C1359-C1359
Author(s):  
Ryoji Kiyanagi ◽  
Yasumitsu Matsuo ◽  
Yoshihisa Ishikawa ◽  
Yukio Noda ◽  
Takashi Ohhara ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Temperature ◽  
Transition Temperature ◽  
Hydrogen Bonds ◽  
Neutron Diffraction ◽  
Structural Phase ◽  
Proton Conduction ◽  
Proton Density ◽  
Conduction Path ◽  
Protonic Conduction

The materials represented as M3H(XO4)2 (M = alkaline metal, X = S or Se) are known to exhibit high protonic conductivities at moderately high temperature. The high protonic conductivity emerges upon a structural phase transition and hydrogen bonds become directionally disordered. The protonic conduction is presumably realized through the disordered hydrogen bonds, but no experimental evidence has been reported. Meanwhile, although the mechanism of the protonic conduction is considered to be the same among this group of materials, the transition temperature (Tc) varies depending on the elements of M and X. For example, the material with M = Rb and X = Se undergoes the transition at 440 K while with M = K and X = Se the transition occurs at 390 K. Since the chemical characteristics of Rb and K are, as a principal, the same, some structural features may play crucial roles in triggering the phase transition. In order to clarify the mechanism of the proton conduction in the superprotonic phase and the relation between the crystal structure and Tc, structural studies on Rb3H(SeO4)2 at high temperature and solid solutions of Rb3H(SeO4)2 and K3H(SeO4)2 (Rb3-xKxH(SeO4)2, x=0,1,2,3) were conducted by means of single crystal neutron diffraction at FONDER at JRR-3M and SENJU at J-PARC/MLF. The proton density distribution map obtained from the high temperature neutron diffraction experiment clearly demonstrates 2-dimensional continuous spread of the proton distribution, which is considered to be the proton conduction path (figure). The structure analyses of Rb3-xKxH(SeO4)2 revealed that K ions tend to occupy one of two possible sites. As the concentration of K ion increases, the distortion of SeO4 appears to be enhanced. The variation of the distortion is consistent with the variation of the transition temperature, suggesting the close relationship between the distortion and the phase transition temperature.

Perfluoroalkyl-Functionalized Covalent Organic Frameworks with Superhydrophobicity for Anhydrous Proton Conduction

2020 ◽  
Vol 142 (33) ◽  
pp. 14357-14364 ◽  
Author(s):  
Xiaowei Wu ◽  
You-lee Hong ◽  
Bingqing Xu ◽  
Yusuke Nishiyama ◽  
Wei Jiang ◽  
...  
Keyword(s):  
Proton Conduction ◽  
Covalent Organic Frameworks ◽  
Anhydrous Proton Conduction

Tuning proton dissociation energy in proton carrier doped 2D covalent organic frameworks for anhydrous proton conduction at elevated temperature

2020 ◽  
Vol 8 (27) ◽  
pp. 13702-13709
Author(s):  
Shuhui Chen ◽  
Yue Wu ◽  
Ying Zhang ◽  
Wenxiang Zhang ◽  
Yu Fu ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Dielectric Properties ◽  
Dissociation Energy ◽  
Proton Conduction ◽  
Lewis Base ◽  
Covalent Organic Frameworks ◽  
Proton Dissociation ◽  
Anhydrous Proton Conduction ◽  
Positively Charged

The proton dissociation degrees and dielectric properties of proton carriers doped COFs with neutral, polar, Lewis base and positively charged sites are investigated to get better understanding of structure–conductivity relationship.

High-temperature anion and proton conduction in RE3NbO7 (RE = La, Gd, Y, Yb, Lu) compounds

2015 ◽  
Vol 35 (11) ◽  
pp. 3051-3061 ◽  
Author(s):  
A. Chesnaud ◽  
M.-D. Braida ◽  
S. Estradé ◽  
F. Peiró ◽  
A. Tarancón ◽  
...  
Keyword(s):  
High Temperature ◽  
Proton Conduction
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