Polarization effects upon adsorptive and catalytic properties. 2. Surface electrical conductivity of nickel(II) oxide deposited on lithium niobate (LiNbO3) and its changes upon gas adsorption

1985 ◽  
Vol 89 (13) ◽  
pp. 2827-2831 ◽  
Author(s):  
Yasunobu Inoue ◽  
Kazunori Sato ◽  
Shinichi Suzuki
Keyword(s):  
Electrical Conductivity ◽  
Lithium Niobate ◽  
Gas Adsorption ◽  
Catalytic Properties ◽  
Polarization Effects ◽  
Surface Electrical Conductivity

scholarly journals Особенности электрических свойств кристаллов ниобата лития, выращенных из распалава с флюсом K-=SUB=-2-=/SUB=-O

2019 ◽  
Vol 61 (7) ◽  
pp. 1270
Author(s):  
А.В. Яценко ◽  
С.В. Евдокимов ◽  
М.Н. Палатников ◽  
Н.В. Сидоров
Keyword(s):  
Electrical Conductivity ◽  
Lithium Niobate ◽  
Temperature Dependence ◽  
Proton Conductivity ◽  
Pyroelectric Coefficient ◽  
Strong Anisotropy ◽  
Temperature Range ◽  
Lithium Niobate Crystals

The temperature dependence of the electrical conductivity and the primary pyroelectric coefficient of lithium niobate crystals LiNbO3 grown from a melt with K2O flux was investigated in the range of 292–450 K . It is shown that these crystals are characterized by a strong anisotropy of electrical conductivity, and in the temperature range studied, proton conductivity dominates.

Investigation of diffusion alloying time on electrochemical behavior and conductivity of Nb-modified AISI 430 SS as PEMFC bipolar plate

2019 ◽  
Vol 66 (4) ◽  
pp. 520-526
Author(s):  
Fupeng Cheng ◽  
Jinglong Cui ◽  
Shuai Xu ◽  
Hongyu Wang ◽  
Pengchao Zhang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Electrochemical Behavior ◽  
Surface Conductivity ◽  
Proton Exchange ◽  
Corrosion Mechanism ◽  
Content Type ◽  
Surface Electrical Conductivity ◽  
Aisi 430

Purpose The purpose of this paper is to improve the surface electrical conductivity and corrosion resistance of AISI 430 stainless steel (430 SS) as bipolar plates for proton exchange membrane fuel cells (PEMFCs), a protective Nb-modified layer is formed onto stainless steel via the plasma surface diffusion alloying method. The effect of diffusion alloying time on electrochemical behavior and surface conductivity is evaluated. Design/methodology/approach In this work, the surface electrical conductivity and corrosion resistance of modified specimen are evaluated by the potentiodynamic and potentionstatic polarization tests. Moreover, the hydrophobicity is also investigated by contact angle measurement. Findings The Nb-modified 430 SS treated by 1.5 h (1.5Nb) presented a lower passivation current density, lower interfacial contact resistance and a higher hydrophobicity than other modified specimens. Moreover, the 1.5 Nb specimen presents a smoother surface than other modified specimens after potentionstatic polarization tests. Originality/value The effect of diffusion alloying time on electrochemical behavior, surface conductivity and hydrophobicity of modified specimen is evaluated. The probable anti-corrosion mechanism of Nb-modified specimen in simulated acid PEMFC cathode environment is presented.

EFFECTS OF THE RH ON MELAMINIC LAMINATES AND POLYMERIZED LINSEED OIL FILM-SURFACE ELECTRICAL CONDUCTIVITY

2008 ◽  
Author(s):  
LUCREZIA PALUMMO ◽  
GIULIO AIELLI ◽  
RINALDO SANTONICO ◽  
JOHNNY MIO BERTOLO ◽  
ANDREA BEARZOTTI
Keyword(s):  
Electrical Conductivity ◽  
Linseed Oil ◽  
Film Surface ◽  
Oil Film ◽  
Surface Electrical Conductivity

On the electrical conductivity of semiclassical two-component plasmas

2002 ◽  
Vol 68 (2) ◽  
pp. 81-86 ◽  
Author(s):  
YU. V. ARKHIPOV ◽  
F. B. BAIMBETOV ◽  
A. E. DAVLETOV ◽  
K. V. STARIKOV
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Plasma ◽  
Memory Function ◽  
Analytical Formula ◽  
Approximate Expression ◽  
Quantum Mechanical ◽  
Kubo Formula ◽  
Polarization Effects ◽  
Physical Evidence ◽  
Coulomb Logarithm

Starting from a memory-function formalism coupled with the Green– Kubo formula and an approximate expression for the generalized Coulomb logarithm, the electric conductivity of a dense high-temperature hydrogen plasma is studied. A pseudopotential model, taking account of short-range quantum effects and long-range screening-field effects, is employed to include quantum mechanical and polarization effects. An analytical formula for the Coulomb logarithm is proposed when the thermal de Broglie wavelengths are rather smaller than the Debye radius. A minimum in the curve of electrical conductivity is found and some physical evidence for its appearance is produced.

The photo-, electro- and photoelectro-catalytic properties and application prospects of porous coordinate polymers

2018 ◽  
Vol 6 (15) ◽  
pp. 6130-6154 ◽  
Author(s):  
Haolin Zhu ◽  
Dingxin Liu ◽  
Dianting Zou ◽  
Jianyong Zhang
Keyword(s):  
Catalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Gas Adsorption ◽  
Catalytic Properties ◽  
Metal Organic Frameworks ◽  
High Catalytic Activity ◽  
Large Specific Surface Area ◽  
Metal Organic ◽  
Application Prospects

Since the discovery of metal–organic frameworks (MOFs), covalent–organic frameworks (COFs) and zeolite–imidazole frameworks (ZIFs), many of their outstanding properties have been explored such as their large specific surface area, significant gas adsorption, and high catalytic activity.

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