Electrical Transport — Discovery of Dual Ion-Electron Conductivity of Metal-Organic Frameworks via Machine Learning-Guided Experimentation

6 measurement groups · 16 results

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

MOF 1 activated/vacuum-dried pellet · Pellet

Sample activated at 80 deg C for 15 h; conductivities reported at room temperature in Table 3 and at 353 K in text; I-V measured across 297-353 K.

Temperature: RT; 353
Atmosphere: activated/vacuum-dried sample; atmosphere not specified
Geometry: pressed cylindrical pellet, four-wire resistance; I-V script details in SI
Context: pristine framework
Measurement source: 1149 · 4.2.2 Optical and Electrical Properties · Figure 6b; Table 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 1 activated conductivity at 353 K	1.55 x 10-8 S.cm-1	—	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties
MOF 1 activated charge-transport activation energy from Table 3	1.78 x 10-4 eV	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3
MOF 1 Table 3 band gap	1.4 eV	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3
MOF 1 activated conductivity at RT from comparison table	2.97 x 10-8 S.cm-1 at RT	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3

MOF 1 as-synthesised crystals/pellet · Pellet

40 mg MOF pellet compressed at 2.50 kPa for 4 min; 0.96 cm diameter, 0.10-0.20 cm thickness; Keithley digital multimeter; sigma = L/(RA).

Temperature: 298; 353
Atmosphere: ambient/as-synthesised; humidity not specified for room-temperature value
Geometry: pressed cylindrical pellet, four-wire resistance
Context: pristine framework
Measurement source: 1148 · 4.2.2 Optical and Electrical Properties

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 1 conductivity after heating to 353 K, as-synthesised	9.39 x 10-9 S.cm-1 at 353 K	—	—	Text Exact Reported	1148 · 4.2.2 Optical and Electrical Properties
MOF 1 room-temperature conductivity, as-synthesised	7.26 x 10-9 S.cm-1 at 298 K	—	—	Text Exact Reported	1148 · 4.2.2 Optical and Electrical Properties

MOF 1 100 mg humidity pellet · Pellet

Relative humidity varied from 30% to 98%; temperature-dependent proton conductivities measured to 353 K at 98% RH.

Temperature: 297-353
Atmosphere: 30-98% RH; highest reported values at 98% RH
Geometry: 100 mg pellet between copper foil pieces in a 3-D printed sample holder
Context: pristine framework
Measurement source: S7-S8 · Proton Conductivity Measurement under Different Humidities · Figure S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 1 proton conduction activation energy	0.91 meV	0.00091 eV	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties · Figure 6a
MOF 1 highest proton conductivity at 353 K and 98% RHMarked as a best value within this paper	6.39 x 10-7 S.cm-1	—	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties · Figure 6a

MOF 2 activated/vacuum-dried pellet · Pellet

Sample activated at 80 deg C for 15 h; conductivities reported at room temperature in Table 3 and at 353 K in text; I-V measured across 297-353 K.

Temperature: RT; 353
Atmosphere: activated/vacuum-dried sample; atmosphere not specified
Geometry: pressed cylindrical pellet, four-wire resistance; I-V script details in SI
Context: pristine framework
Measurement source: 1149 · 4.2.2 Optical and Electrical Properties · Figure 6c; Table 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 2 activated conductivity at 353 K	1.35 x 10-7 S.cm-1	—	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties
MOF 2 activated charge-transport activation energy from Table 3	1.3 x 10-4 eV	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3
MOF 2 Table 3 band gap	1.5 eV	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3
MOF 2 activated conductivity at RT from comparison table	5.91 x 10-9 S.cm-1 at RT	—	—	Table Exact Reported	1150 · 4.2.2 Optical and Electrical Properties · Table 3

MOF 2 as-synthesised crystals/pellet · Pellet

40 mg MOF pellet compressed at 2.50 kPa for 4 min; 0.96 cm diameter, 0.10-0.20 cm thickness; Keithley digital multimeter; sigma = L/(RA).

Temperature: 298; 353
Atmosphere: ambient/as-synthesised; humidity not specified for room-temperature value
Geometry: pressed cylindrical pellet, four-wire resistance
Context: pristine framework
Measurement source: 1148 · 4.2.2 Optical and Electrical Properties

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 2 conductivity after heating to 353 K, as-synthesisedMarked as a best value within this paper	5.97 x 10-6 S.cm-1 at 353 K	—	—	Text Exact Reported	1148 · 4.2.2 Optical and Electrical Properties
MOF 2 room-temperature conductivity, as-synthesisedMarked as a best value within this paper	4.23 x 10-6 S.cm-1 at 298 K	—	—	Text Exact Reported	1148 · 4.2.2 Optical and Electrical Properties

MOF 2 100 mg humidity pellet · Pellet

Relative humidity varied from 30% to 98%; temperature-dependent proton conductivities measured to 353 K at 98% RH.

Temperature: 297-353
Atmosphere: 30-98% RH; highest reported values at 98% RH
Geometry: 100 mg pellet between copper foil pieces in a 3-D printed sample holder
Context: pristine framework
Measurement source: S7-S8 · Proton Conductivity Measurement under Different Humidities · Figure S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MOF 2 proton conduction activation energy	0.95 meV	0.00095 eV	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties · Figure 6a
MOF 2 highest proton conductivity at 353 K and 98% RH	5.3 x 10-7 S.cm-1	—	—	Text Exact Reported	1149 · 4.2.2 Optical and Electrical Properties · Figure 6a