Electrical Transport — Functionality in metal-organic framework minerals: Proton conductivity, stability and potential for polymorphism

6 measurement groups · 24 results

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

ST1 compacted pellet · Pellet

Arrhenius plots for ST1 at 90% RH, ST2 at 70% RH and ZH at 90% RH.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ST1 proton-conduction activation energy at 90% RH	0.59 eV	—	—	Text Exact Reported	4927 · Results and discussion · Fig. 4b
ST2 proton-conduction activation energy at 70% RH	1.31 eV	—	—	Text Exact Reported	4927 · Results and discussion · Fig. 4b
ZH proton-conduction activation energy at 90% RH	0.37 eV	—	—	Text Exact Reported	4927 · Results and discussion · Fig. 4b

Deuterated ST1 · Pellet

Deuterated ST1 at 25 deg C and ca. 70% saturated D2O vapour.

Temperature: 298
Atmosphere: ca. 70% saturated D2O vapour
Geometry: Pellet geometry not separately specified; same impedance protocol implied.
Context: deuterated guest-water framework
Measurement source: 4928 · Results and discussion · SI Fig. S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Deuterated ST1 activation energy	0.51 eV	—	—	Text Exact Reported	4928 · Results and discussion · SI Fig. S14
Deuterated ST1 conductivity under D2O vapour	1.40 x 10-6 S cm-1	—	—	Text Exact Reported	4928 · Results and discussion · SI Fig. S14
Non-deuterated ST1 conductivity before D2O isotope comparison	1.76 x 10-6 S cm-1	—	—	Text Exact Reported	4928 · Results and discussion · SI Fig. S14

Deuterated ZH · Pellet

Deuterated ZH at 25 deg C and ca. 70% saturated D2O vapour.

Temperature: 298
Atmosphere: ca. 70% saturated D2O vapour
Geometry: Pellet geometry not separately specified; same impedance protocol implied.
Context: deuterated mixed-metal guest-water framework
Measurement source: 4928 · Results and discussion · SI Fig. S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Deuterated ZH activation energy	0.51 eV	—	—	Text Exact Reported	4928 · Results and discussion · SI Fig. S15
Deuterated ZH conductivity under D2O vapour	3.22 x 10-6 S cm-1	—	—	Text Exact Reported	4928 · Results and discussion · SI Fig. S15

ST1 compacted pellet · Pellet

Relative humidity sweep at 25 deg C; frequency 1 Hz to 10 MHz; temperature/humidity controlled chamber.

Temperature: 298
Atmosphere: controlled relative humidity
Geometry: Compacted pellet about 1.2 mm thick and 2.5 mm diameter; gold paste and 50 um gold wires.
Context: pristine framework pellet
Measurement source: 4925 · Alternative current (AC) impedance measurement · Fig. 4a; SI Fig. S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ST1 proton conductivity at 40% RH	log(sigma / S cm-1) approx -7.7	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST1 proton conductivity at 50% RH	log(sigma / S cm-1) approx -7.0	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST1 proton conductivity at 60% RH	log(sigma / S cm-1) approx -6.45	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST1 proton conductivity at 70% RH	log(sigma / S cm-1) approx -5.75	—	—	Figure Axis Approximate	4928 · Results and discussion · Fig. 4a; SI Fig. S14
ST1 proton conductivity at 80% RH	log(sigma / S cm-1) approx -5.05	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST1 proton conductivity at 90% RHMarked as a best value within this paper	log(sigma / S cm-1) approx -3.8	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a

ST2 compacted pellet · Pellet

Relative humidity sweep at 25 deg C; ST2 measured only up to 70% RH because of deliquescence.

Temperature: 298
Atmosphere: controlled relative humidity
Geometry: Compacted pellet about 1.2 mm thick and 2.5 mm diameter; gold paste and 50 um gold wires.
Context: pristine framework pellet
Measurement source: 4927 · Results and discussion · Fig. 4a; SI Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ST2 proton conductivity at 40% RH	log(sigma / S cm-1) approx -7.3	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST2 proton conductivity at 50% RH	log(sigma / S cm-1) approx -6.45	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST2 proton conductivity at 60% RH	log(sigma / S cm-1) approx -5.55	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ST2 proton conductivity at 70% RHMarked as a best value within this paper	log(sigma / S cm-1) approx -4.0	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a

ZH compacted pellet · Pellet

Relative humidity sweep at 25 deg C; frequency 1 Hz to 10 MHz; temperature/humidity controlled chamber.

Temperature: 298
Atmosphere: controlled relative humidity
Geometry: Compacted pellet about 1.2 mm thick and 2.5 mm diameter; gold paste and 50 um gold wires.
Context: pristine mixed-metal framework pellet
Measurement source: 4927 · Results and discussion · Fig. 4a; SI Fig. S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ZH proton conductivity at 40% RH	log(sigma / S cm-1) approx -8.2	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ZH proton conductivity at 50% RH	log(sigma / S cm-1) approx -7.25	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ZH proton conductivity at 60% RH	log(sigma / S cm-1) approx -5.85	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ZH proton conductivity at 70% RH	1.87 x 10-5 S cm-1 in deuteration comparison; Fig. 4a approx log -4.75	—	—	Text Rounded Reported	4928 · Results and discussion · SI Fig. S15
ZH proton conductivity at 80% RH	log(sigma / S cm-1) approx -3.8	—	—	Figure Axis Approximate	4927 · Results and discussion · Fig. 4a
ZH proton conductivity at 90% RHMarked as a best value within this paper	almost 3 x 10-3 S cm-1	—	—	Text Approximate	4927 · Results and discussion · Fig. 4a