Electrical Transport — Design and synthesis of hydroxide ion-conductive metal-organic frameworks based on salt inclusion

4 measurement groups · 9 results

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

NBu4-ZIF-8-OH compacted pellet · Pellet

Relative humidity over 96%; temperature-dependent conductivity shown in inset of Figure 4.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Activation energy for NBu4-ZIF-8-OH ionic conductivity	Ea = 0.70 eV	—	—	Text Exact Reported	1704 · Ionic conductivity · Figure 4 inset
Comparison activation energy for hydrated OH- in liquid	less than 0.2 eV	—	<	Text Range	1704 · Ionic conductivity

NBu4-ZIF-8 compacted pellet · Pellet

25 C, 98% RH; compacted pellet with gold electrodes.

Temperature: 298
Atmosphere: Humidity-controlled atmosphere
Geometry: 3 mm diameter compacted pellet with two gold electrodes and four end terminals
Context: Salt-loaded inclusion compound conductivity compared with NBu4-ZIF-8-OH.
Measurement source: 1704 · Conductivity discussion

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ionic conductivity of NBu4-ZIF-8Marked as a best value within this paper	6.2 x 10-7 S cm-1 at 98% RH and 25 C	—	—	Text Exact Reported	1704 · Conductivity discussion

NBu4-ZIF-8-OH compacted pellet · Pellet

25 C, 99% RH for headline value; frequency range 1 Hz-10 MHz; compacted pellet in sealed cell; humidity controlled by N2-flow humidifier.

Temperature: 298
Atmosphere: N2, humidity-controlled
Geometry: 3 mm diameter compacted pellet with two gold electrodes and four end terminals
Context: Target hydroxide-ion conductive MOF compared with pristine ZIF-8.
Measurement source: 1704 · Ionic conductivity · Figure 4 and Figure S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Conductivity enhancement versus blank ZIF-8	4 orders of magnitude	—	—	Text Rounded Reported	1704 · Ionic conductivity · Figure 4
Ionic conductivity of NBu4-ZIF-8-OH	2.3 x 10-8 S cm-1 at 25 C and 99% RH	—	—	Text Exact Reported	1704 · Ionic conductivity · Figure 4 and Figure S8
Approximate log conductivity of NBu4-ZIF-8-OH at 40% RH	log(sigma / S cm-1) about -11.6 at 40% RH	—	visual estimate from Figure 4 axis	Figure Axis Approximate	1704 · Figure 4 · Figure 4
Approximate log conductivity of NBu4-ZIF-8-OH at 60% RH	log(sigma / S cm-1) about -10.9 at 60% RH	—	visual estimate from Figure 4 axis	Figure Axis Approximate	1704 · Figure 4 · Figure 4
Approximate log conductivity of NBu4-ZIF-8-OH at 80% RH	log(sigma / S cm-1) about -9.5 at 80% RH	—	visual estimate from Figure 4 axis	Figure Axis Approximate	1704 · Figure 4 · Figure 4

ZIF-8 compacted pellet · Pellet

25 C, 98% RH; frequency range 1 Hz-10 MHz; compacted pellet with gold electrodes; quasi-four-probe terminals.

Temperature: 298
Atmosphere: Humidity-controlled atmosphere; ZIF-8 RH controlled by incubator
Geometry: 3 mm diameter compacted pellet with two gold electrodes and four end terminals
Context: Pristine ZIF-8 conductivity control.
Measurement source: 1704 · Ionic conductivity · Figure 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ionic conductivity of ZIF-8	3.8 x 10-12 S cm-1 at 25 C and 98% RH	—	—	Text Exact Reported	1704 · Ionic conductivity · Figure 4