Preparation and conductibility of solid high-proton conductor molybdovanadogermanic heteropoly acid

2000 ◽  
Vol 35 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Qingyin Wu ◽  
Guangyao Meng
Keyword(s):  
Heteropoly Acid ◽  
Proton Conductor ◽  
High Proton

Synthesis and performance of high-proton conductor undecatungstochromoindic heteropoly acid

2005 ◽  
Vol 59 (1) ◽  
pp. 123-126 ◽  
Author(s):  
Qingyin Wu ◽  
Xiaoguang Sang ◽  
Bin Liu ◽  
V.G. Ponomareva
Keyword(s):  
Heteropoly Acid ◽  
Proton Conductor ◽  
High Proton ◽  
And Performance

Synthesis and conductive performance about a kind of high-proton conductor, Dawson structure heteropoly acid H6P2W16Mo2O40 ⋅ 29H2O

2021 ◽  
pp. 2150019
Author(s):  
Xuefei Wu ◽  
Qingyin Wu
Keyword(s):  
Activation Energy ◽  
Relative Humidity ◽  
Heteropoly Acid ◽  
Proton Conductor ◽  
Conduction Activation Energy ◽  
Measured Range ◽  
High Proton ◽  
Dawson Structure ◽  
Higher Temperature ◽  
Proton Migration

A heteropoly acid (HPA) with Dawson structure, H6P2W[Formula: see text]Mo2O[Formula: see text]⋅29H2O, is synthesized with characterization and the investigation toward its proton conductive behavior. Actually, at 18[Formula: see text]C with 80% relative humidity (RH), H6P2W[Formula: see text]Mo2O[Formula: see text] ⋅ 29H2O displays the conductivity as 2.30 × 10[Formula: see text] S ⋅ cm[Formula: see text], indicating an excellent protonic conductor. The proton conduction activation energy is 32.19 kJ ⋅ mol[Formula: see text], implying proton migration following vehicle mechanism. During the measured range, higher temperature can boost the conductivity.

Synthesis and conduction mechanism of high proton conductor H6SiW10V2O40⋅14H2O

2016 ◽  
Vol 09 (03) ◽  
pp. 1650048 ◽  
Author(s):  
Huaxue Cai ◽  
Tianpei Huang ◽  
Qingyin Wu ◽  
Wenfu Yan
Keyword(s):  
Activation Energy ◽  
Relative Humidity ◽  
Conduction Mechanism ◽  
Heteropoly Acid ◽  
Proton Conductor ◽  
Proton Conduction ◽  
Arrhenius Behavior ◽  
High Proton Conductivity ◽  
High Proton ◽  
Higher Temperature

A ternary heteropoly acid (HPA) H6SiW[Formula: see text]V2O[Formula: see text]14H2O was prepared and investigated in this paper. The structure feature and hydration of this HPA was characterized by IR, XRD, UV, and TG-DTA. This HPA exhibits a high proton conductivity, which is [Formula: see text]S[Formula: see text]cm[Formula: see text] at 25[Formula: see text]C and 70% relative humidity. It is a novel high proton conductor. The conductivity increases with higher temperature, and it exhibits Arrhenius behavior, with the activation energy value of 21.02[Formula: see text]kJ[Formula: see text] mol[Formula: see text] for proton conduction, indicating the proton conduction mechanism is dominated by vehicle mechanism.

Solid high-proton conductor tungstovanadozincic acid with transition metal as central atom: Synthesis and conductivity

2015 ◽  
Vol 08 (04) ◽  
pp. 1550041 ◽  
Author(s):  
Tianpei Huang ◽  
Xuefei Wu ◽  
Qingyin Wu ◽  
Fahe Cao ◽  
Wenfu Yan
Keyword(s):  
Activation Energy ◽  
Transition Metal ◽  
Heteropoly Acid ◽  
Electrochemical Impedance ◽  
Central Atom ◽  
Proton Conductor ◽  
Impedance Spectrum ◽  
Electrochemical Impedance Spectrum ◽  
High Proton ◽  
C 50

A Keggin-type vanadium-substituted tungstovanadozincic heteropoly acid H 7 ZnW 11 VO 40 ⋅ 8 H 2 O , with the transition metal as central atom, was firstly synthesized and characterized. Its proton conductivity was measured by the electrochemical impedance spectrum (EIS), and the result indicates that the H 7 ZnW 11 VO 40 ⋅ 8 H 2 O is a solid high-proton conductor with conductivity of 3.26 × 10-3S ⋅ cm-1 at 58°C, 50% relative humidity. Its activation energy is 29.50 kJ ⋅ mol-1, which suggests that the mechanism of proton conduction is the Vehicle mechanism.

scholarly journals Arrangement of water molecules and high proton conductivity of tunnel structure phosphates, KMg1−xH2x(PO3)3·yH2O

RSC Advances ◽  
2020 ◽  
Vol 10 (13) ◽  
pp. 7803-7811 ◽  
Author(s):  
Yasuaki Matsuda ◽  
Kousei Funakoshi ◽  
Ryosuke Sebe ◽  
Genki Kobayashi ◽  
Masao Yonemura ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Gas Flow ◽  
Proton Conductor ◽  
Water Molecules ◽  
Tunnel Structure ◽  
Fast Proton ◽  
High Proton Conductivity ◽  
High Proton ◽  
Ar Gas

A fast proton conductor exhibiting high proton conductivity of 7.0 × 10−3 S cm−1 at 200 °C in a dry Ar gas flow was developed by designing water chains in a rigid tunnel framework.

Preparation and conductivity of solid high-proton conductor silica gel containing 80 wt.% decatungstodivanadogermanic acid

2007 ◽  
Vol 61 (3) ◽  
pp. 663-665 ◽  
Author(s):  
Qingyin Wu ◽  
Qu Chen ◽  
Xiaoqing Cai ◽  
Jianming Wang ◽  
Jianqing Zhang
Keyword(s):  
Silica Gel ◽  
Proton Conductor ◽  
High Proton
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