Electrical Transport — A Water-Stable Proton-Conductive Barium(II)-Organic Framework for Ammonia Sensing at High Humidity

Measurement evidence

Electrical Transport

A Water-Stable Proton-Conductive Barium(II)-Organic Framework for Ammonia Sensing at High Humidity · Guo K., Zhao L., Yu S. et al. · Inorganic Chemistry · 2018 · 7104-7112

5 measurement groups · 71 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

Time-dependent proton conductivity monitoring

Electrical conductivity

Pressed pellet of MOF 1 · Pellet

Continuous conductivity testing for 8 h at 100 deg C and 98% RH.

Temperature: 373.15
Atmosphere: 98% RH
Geometry: pressed pellet
Context: pristine MOF 1 pellet
Measurement source: p005 · Proton Conduction of MOF 1 · Figure S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
time-dependent conductivity stability	proton conductivity remained basically unchanged after 8 h at 100 deg C and 98% RH	—	—	Text Approximate	p005 · Proton Conduction of MOF 1 · Figure S14

Equivalent-circuit fitting of Nyquist plots with ZSimpWin

Impedance spectroscopy

Pressed pellet of MOF 1 · Pellet

Nyquist plots at 30 and 100 deg C under 98% RH fitted with LR(C(R(Q(R(C(RW)))))).

Temperature: 303.15 and 373.15
Atmosphere: 98% RH
Geometry: pressed pellet
Context: pristine MOF 1 pellet
Measurement source: p005 · Figures S1-S2 · Figure S1; Figure S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
equivalent circuit used for 30/100 deg C 98% RH fitting	LR(C(R(Q(R(C(RW))))))	—	—	Caption Exact Reported	p005 · Figures S1-S2 · Figure S1

Arrhenius analysis of impedance spectra under NH3

MOF 1 pellet during humid NH3 exposure · Pellet

25 ppm NH3, 30-100 deg C, at 75% or 98% RH; activation energy from Arrhenius plots.

Temperature: 303.15-373.15
Atmosphere: humidified NH3
Geometry: pressed pellet sensor
Context: guest-loaded MOF 1 pellet
Measurement source: p007 · Impedance Ammonia Sensing · Figure 10; Figures S19-S20

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
dry ammonia/water-absence control	no proton conduction and ammonia recognition in the absence of water or under dry ammonia at 30 deg C	—	—	Text Qualitative	p007 · Impedance Ammonia Sensing
activation energy under 25 ppm NH3 at 75% RH	0.73 eV	—	—	Text Exact Reported	p007 · Impedance Ammonia Sensing · Figure 10
activation energy under 25 ppm NH3 at 98% RH	0.14 eV	—	—	Text Exact Reported	p007 · Impedance Ammonia Sensing · Figure 10

Conductivity calculated from NH3-exposure impedance spectra

Electrical conductivity

MOF 1 pellet during humid NH3 exposure · Pellet

30 deg C, 75/85/93/98% RH, 1-25 ppm NH3; conductivities calculated from impedances.

Temperature: 303.15
Atmosphere: humidified synthetic air plus NH3
Geometry: pressed pellet sensor
Context: guest-loaded MOF 1 pellet during NH3 exposure
Measurement source: p008 · Impedance Ammonia Sensing · Table 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
proton conductivity under 10 ppm NH3 at 75% RH and 30 deg C	6.13e-07 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 15 ppm NH3 at 75% RH and 30 deg C	6.25e-07 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 20 ppm NH3 at 75% RH and 30 deg C	6.86e-07 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 25 ppm NH3 at 75% RH and 30 deg C	7.18e-07 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 5 ppm NH3 at 75% RH and 30 deg C	5.52e-07 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 10 ppm NH3 at 85% RH and 30 deg C	3.39e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 15 ppm NH3 at 85% RH and 30 deg C	4.08e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 20 ppm NH3 at 85% RH and 30 deg C	4.98e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 25 ppm NH3 at 85% RH and 30 deg C	5.36e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 3 ppm NH3 at 85% RH and 30 deg C	2.35e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 5 ppm NH3 at 85% RH and 30 deg C	2.51e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 10 ppm NH3 at 93% RH and 30 deg C	4.47e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 15 ppm NH3 at 93% RH and 30 deg C	5.4e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 1 ppm NH3 at 93% RH and 30 deg C	2.75e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 20 ppm NH3 at 93% RH and 30 deg C	6.36e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 25 ppm NH3 at 93% RH and 30 deg C	7.89e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 3 ppm NH3 at 93% RH and 30 deg C	3.16e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 5 ppm NH3 at 93% RH and 30 deg C	3.52e-06 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 10 ppm NH3 at 98% RH and 30 deg C	2.58e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 15 ppm NH3 at 98% RH and 30 deg C	3.06e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 1 ppm NH3 at 98% RH and 30 deg C	1.37e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 20 ppm NH3 at 98% RH and 30 deg C	3.55e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 25 ppm NH3 at 98% RH and 30 deg CMarked as a best value within this paper	3.88e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 3 ppm NH3 at 98% RH and 30 deg C	1.66e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4
proton conductivity under 5 ppm NH3 at 98% RH and 30 deg C	1.96e-05 S cm-1	—	—	Table Exact Reported	p008 · Table 4 · Table 4

Quasi-four-probe electrochemical impedance spectroscopy; PARSTAT 2273; 0.1 Hz-1 MHz; 100 mV AC

Electrical conductivity Impedance spectroscopy

Pressed pellet of MOF 1 · Pellet

Pressed pellet equilibrated at least 18 h under controlled RH; conductivity from Nyquist semicircle fitting using sigma = T/(RS).

Temperature: 303.15-373.15
Atmosphere: controlled H2O relative humidity
Geometry: pressed pellet; thickness and cross-sectional area not reported
Context: pristine MOF 1 pellet under humid water vapour
Measurement source: p002-p005 · Proton Conduction Measurement; Proton Conduction of MOF 1 · Table 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
proton conductivity in humid air/water vapour at 68% RH and 100 deg C	2.05e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 68% RH and 50 deg C	6.71e-08 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 68% RH and 60 deg C	1.91e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 68% RH and 70 deg C	4.83e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 68% RH and 80 deg C	8.83e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 68% RH and 90 deg C	9.34e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 100 deg C	5.69e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 30 deg C	5.52e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 40 deg C	6.01e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 50 deg C	9.21e-07 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 60 deg C	1.01e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 70 deg C	1.4e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 80 deg C	1.96e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 75% RH and 90 deg C	3.98e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 100 deg C	5.09e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 30 deg C	2.21e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 40 deg C	3.3e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 50 deg C	5.66e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 60 deg C	1.13e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 70 deg C	1.43e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 80 deg C	1.73e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 85% RH and 90 deg C	2.7e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 100 deg C	0.000668 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 30 deg C	2.69e-06 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 40 deg C	1.32e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 50 deg C	2.13e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 60 deg C	2.95e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 70 deg C	3.4e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 80 deg C	4.54e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 93% RH and 90 deg C	0.000325 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 100 deg CMarked as a best value within this paper	0.00136 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 30 deg C	1.17e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 40 deg C	1.82e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 50 deg C	2.6e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 60 deg C	5.09e-05 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 70 deg C	0.000109 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 80 deg C	0.000256 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
proton conductivity in humid air/water vapour at 98% RH and 90 deg C	0.000409 S cm-1	—	—	Table Exact Reported	p004 · Table 2 · Table 2
unusable low-RH impedance condition	no useful impedance value at 30 and 40 deg C under 68% RH or below	—	—	Text Qualitative	p005 · Proton Conduction of MOF 1
activation energy under 68% RH	0.71 eV	—	—	Text Exact Reported	p005 · Proton Conduction of MOF 1 · Figure 6
activation energy under 98% RH	0.67 eV	—	—	Text Exact Reported	p005 · Proton Conduction of MOF 1 · Figure 6