Glass-phase coordination polymer displaying proton conductivity and guest-accessible porosity

2019 ◽  
Vol 55 (59) ◽  
pp. 8528-8531 ◽  
Author(s):  
Munehiro Inukai ◽  
Yusuke Nishiyama ◽  
Kayako Honjo ◽  
Chinmoy Das ◽  
Susumu Kitagawa ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Proton Conductivity ◽  
Glass Phase ◽  
Glassy State ◽  
Proton Conduction ◽  
Phase Coordination ◽  
Accessible Porosity

We synthesized the crystalline and glassy state of a coordination polymer displaying proton conduction and guest-accessible porosity.

Humidity-triggered single-crystal-to-single-crystal structural transformations in a Zn(ii) coordination polymer displaying unusual activation energy change in proton conductivity

2019 ◽  
Vol 55 (65) ◽  
pp. 9713-9716 ◽  
Author(s):  
Jeong Hwa Song ◽  
Dae Won Kim ◽  
Dong Won Kang ◽  
Woo Ram Lee ◽  
Chang Seop Hong
Keyword(s):  
Activation Energy ◽  
Coordination Polymer ◽  
Single Crystal ◽  
Proton Conductivity ◽  
Structural Transformations ◽  
Proton Conduction ◽  
Energy Change ◽  
Crystal Structural

Sequential single crystal-to-single crystal transformations occur in a Zn(ii)-based coordination polymer, revealing an unusual change in the activation energy for proton conduction.

‘Proton Escalator’ PEI and Phosphotungstic Acid Constructing a Nanofiber Membrane with Remarkable Proton Conductivity

2021 ◽  
Author(s):  
Xiuwei Sun ◽  
Shumei Liu ◽  
Qingyin Wu ◽  
Shan Zhang ◽  
Hong-Rui Tian ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Phosphotungstic Acid ◽  
Proton Conduction ◽  
High Density ◽  
Nanofiber Membrane ◽  
New Type ◽  
High Flexibility

Polyethyleneimine (PEI) is expected to become a new type of proton conduction booster due to its high density amine and extremely high flexibility. Herein, a nanofiber membrane (eHPW-PEI) composed of...

Proton Exchange Membrane Development and Processing for Fuel Cell Application

2007 ◽  
Vol 539-543 ◽  
pp. 1327-1331
Author(s):  
Philippe Bébin ◽  
Hervé Galiano
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Proton Conduction ◽  
Proton Exchange ◽  
Membrane Properties ◽  
Organic Polymer ◽  
Polysulfone Membrane ◽  
Sulfonated Polysulfone ◽  
Membrane Processing ◽  
Conductive Fillers

The development of new proton exchange membranes for PEMFC has to be related to the membrane processing as it can change drastically the final properties of the material. Indeed, for the same material, a membrane prepared by a solvent-casting process has a lower lifetime than an extruded one. The proton conduction of the membrane can also be dependent on the membrane processing, especially when some removable plasticizers are used to perform the membrane extrusion. Some residual porosity, left in the material after removing the plasticizer, is suspected to enhance the proton conduction of the film. Fuel cell experiments have shown that extruded sulfonated polysulfone membrane can give the same performance as a Nafion® reference membrane whereas the proton conductivity of PSUs is twenty times lower than the Nafion® one. Additional improvements of the membrane properties can also be expected by adding some proton conductive fillers to the organic polymer. This approach enhances the proton conductivity of sulfonated polysulfone to values similar to Nafion®. On the other hand, when Nafion® is used as a matrix for the proton conductive fillers, a very significant improvement of fuel cell performance is obtained.

Cations mediating proton conductivity in an oxalate based microporous coordination polymer

2019 ◽  
Vol 43 (1) ◽  
pp. 24-27 ◽  
Author(s):  
Xing Meng ◽  
Hai-Ning Wang ◽  
Xiao-Kun Wang ◽  
Long-Zhang Dong ◽  
Yan-Hong Zou
Keyword(s):  
Structural Change ◽  
Relative Humidity ◽  
Coordination Polymer ◽  
Proton Conductivity ◽  
Cation Substitution ◽  
High Proton Conductivity ◽  
High Proton

Through cation substitution in a zirconium based coordination polymer, an isostructural framework 1@NH4+ has been prepared without any apparent structural change. The proton conductivity of 1@NH4+ is successfully improved. It exhibits high proton conductivity (1.39 × 10−2 S cm−1) at 98% relative humidity and 60 °C.

scholarly journals Pressure-induced amorphization of a dense coordination polymer and its impact on proton conductivity

APL Materials ◽  
2014 ◽  
Vol 2 (12) ◽  
pp. 124401 ◽  
Author(s):  
Daiki Umeyama ◽  
Satoshi Horike ◽  
Cedric Tassel ◽  
Hiroshi Kageyama ◽  
Yuji Higo ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Proton Conductivity

Polymorphic layered copper phosphonates: exfoliation and proton conductivity studies

2019 ◽  
Vol 48 (19) ◽  
pp. 6539-6545 ◽  
Author(s):  
Bei Liu ◽  
Jing-Cui Liu ◽  
Yang Shen ◽  
Jian-Shen Feng ◽  
Song-Song Bao ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Proton Conduction ◽  
Layered Compounds

α-Cu(4-cnappH)(H2O) (α-Cu-1), α-Cu(4-cnappH)(H2O)·0.5H2O (α-Cu-2) and β-Cu(4-cnappH)(H2O) (β-Cu) [4-cnappH3 = (4-carboxynaphthalen-1-yl)phosphonic acid] are polymorphic layered compounds. Proton conduction is more favorable in α-Cu-2 than in α-Cu-1, but exfoliation into nanosheets decreases the conductivity.

A water-stable Ni(ii) diphosphonate exhibiting water vapor adsorption and water-assisted high proton conductivity

2019 ◽  
Vol 43 (2) ◽  
pp. 807-812 ◽  
Author(s):  
Hailong Xu ◽  
Lu Feng ◽  
Wentao Huang ◽  
Qiaoyun Wang ◽  
Hong Zhou
Keyword(s):  
Thermal Properties ◽  
Water Vapor ◽  
Proton Conductivity ◽  
Proton Conduction ◽  
Water Vapor Adsorption ◽  
Water Stability ◽  
High Proton Conductivity ◽  
Vapor Adsorption ◽  
High Proton

A new nickel phosphonate has been synthesized, and its thermal properties, water stability, water vapor adsorption and proton conduction have been investigated.

Calix[4]resorcinarene-based [Co16] coordination cages mediated by isomorphous auxiliary ligands for enhanced proton conduction

2019 ◽  
Vol 55 (44) ◽  
pp. 6277-6280 ◽  
Author(s):  
Ting-Ting Guo ◽  
Dong-Ming Cheng ◽  
Jin Yang ◽  
Xianxiu Xu ◽  
Jian-Fang Ma
Keyword(s):  
Proton Conductivity ◽  
Proton Conduction ◽  
Design Approach ◽  
Coordination Cages

Two remarkable calix[4]resorcinarene-based [Co16] coordination cages were assembled by a design approach, where the proton conductivity was enhanced drastically by carefully mediating the auxiliary ligands.

Highly selective sensing of Fe3+/Hg2+ and proton conduction using two fluorescent Zn(ii) coordination polymers

2020 ◽  
Vol 49 (32) ◽  
pp. 11129-11141
Author(s):  
Tian-Yang Xu ◽  
Hong-Jiao Nie ◽  
Jia-Ming Li ◽  
Zhong-Feng Shi
Keyword(s):  
Proton Conductivity ◽  
Coordination Polymers ◽  
Proton Conduction ◽  
Fluorescence Sensing

A pair of Zn-based homologues show significant differences in the fluorescence sensing of Hg2+/Fe3+ ions and proton conductivity.

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