Electrical Transport — Mixed proton-electron conductivity in a dynamic 3D metal-organic framework

11 measurement groups · 22 results

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

PEIS and dc I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Al2-(DOBDP)3 (_d) · Powder

Fully dehydrated Al-MOF measured at 293 K; electronic conductivity reported.

Temperature: 293
Atmosphere: 31% RH or ambient measurement context
Geometry: two-probe pressed powder pellet
Context: fully dehydrated Al-MOF pellet
Measurement source: p008 · Mixed proton-electron transport · Table 2; Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Al _d electrical conductivity from I-V	1.7 x 10^-10 S/cm	1.7e-10 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Al _d electrical conductivity from PEIS	2.1 x 10^-10 S/cm	2.1e-10 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS two-probe pressed-pellet conductivity

Electrical conductivity

H12-Al2-(DOBDP)3.12H2O (_h) powder · Powder

Hydrated Al-MOF measured at 293 K and 31% RH; proton conductivity reported, electronic conductivity absent/not detected.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: pristine hydrated Al-MOF pellet
Measurement source: p008 · Mixed proton-electron transport · Table 2; Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Al _h proton conductivity from PEIS	6.1 x 10^-5 S/cm	0.000061 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS two-probe pressed-pellet conductivity

Electrical conductivity

H12-Al2-(DOBDP)3.8H2O (_ph) · Powder

Partially hydrated Al-MOF measured at 293 K and 31% RH; proton conductivity reported.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: partially hydrated Al-MOF pellet
Measurement source: p008 · Mixed proton-electron transport · Table 2; Figure S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Al _ph proton conductivity from PEIS	8.4 x 10^-6 S/cm	0.0000084 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS and dc I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Fe2-(DOBDP)3 (_d) · Powder

Fully dehydrated Fe-MOF measured at 293 K; electronic conductivity reported.

Temperature: 293
Atmosphere: 31% RH or ambient measurement context
Geometry: two-probe pressed powder pellet
Context: fully dehydrated Fe-MOF pellet
Measurement source: p008 · Mixed proton-electron transport · Table 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe _d electrical conductivity from I-V	6.4 x 10^-10 S/cm	6.4e-10 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _d electrical conductivity from PEIS	5.7 x 10^-10 S/cm	5.7e-10 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS and dc I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Fe2-(DOBDP)3.12H2O (_h) powder · Powder

40 mg powder pellet, 7 mm diameter, cold pressed at 2 T between carbon-coated aluminium foils; PEIS 7 MHz to 10 mHz, 200 mV; 293 K and 31% RH.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet in Swagelok cell
Context: pristine hydrated Fe-MOF pellet
Measurement source: p007 · Mixed proton-electron transport · Figure 4; Table 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe _h electrical conductivity from I-V	8.3 x 10^-7 S/cm	8.3e-7 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _h electrical conductivity from PEISMarked as a best value within this paper	8.7 x 10^-7 S/cm	8.7e-7 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _h proton conductivity from PEISMarked as a best value within this paper	1.6 x 10^-4 S/cm	0.00016 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS and dc I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Fe2-(DOBDP)3.3H2O (_pd) · Powder

Partially dehydrated Fe-MOF measured at 293 K; electronic conductivity reported.

Temperature: 293
Atmosphere: 31% RH or ambient measurement context
Geometry: two-probe pressed powder pellet
Context: partially dehydrated Fe-MOF pellet
Measurement source: p008 · Mixed proton-electron transport · Table 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe _pd electrical conductivity from I-V	2.6 x 10^-9 S/cm	2.6e-9 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _pd electrical conductivity from PEIS	2.7 x 10^-9 S/cm	2.7e-9 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS and dc I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Fe2-(DOBDP)3.7H2O (_ph) · Powder

Same two-probe pressed-pellet geometry as hydrated Fe sample; 293 K and 31% RH.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: partially hydrated Fe-MOF pellet
Measurement source: p007-p008 · Mixed proton-electron transport · Figure 4; Table 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Fe _ph electrical conductivity from I-V	3.4 x 10^-8 S/cm	3.4e-8 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _ph electrical conductivity from PEIS	3.9 x 10^-8 S/cm	3.9e-8 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2
Fe _ph proton conductivity from PEIS	4.5 x 10^-7 S/cm	4.5e-7 S/cm	—	Table Exact Reported	p008 · Mixed proton-electron transport · Table 2

PEIS / I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-In2-(DOBDP)3.18H2O (_h) · Powder

Hydrated In-MOF at 293 K, 20 deg C and 31% RH as reported in Table S7 context.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: hydrated pristine In-MOF pellet
Measurement source: text after p027 · Conductivity SI · Figure S24; Table S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
In _h proton conductivity	1.7 x 10^-4 S/cm	0.00017 S/cm	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7

PEIS / I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-Sc2-(DOBDP)3.18H2O (_h) · Powder

Hydrated Sc-MOF at 293 K, 20 deg C and 31% RH as reported in Table S7 context.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: hydrated pristine Sc-MOF pellet
Measurement source: text after p027 · Conductivity SI · Figure S24; Table S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Sc _h proton conductivityMarked as a best value within this paper	2.1 x 10^-4 S/cm	0.00021 S/cm	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7

PEIS / I-V two-probe pressed-pellet conductivity

Electrical conductivity

H12-(Fe-Al-Sc-In)2-(DOBDP)3_h · Powder

Hydrated tetrametallic MOF at 293 K, 20 deg C and 31% RH as reported in Table S7 context.

Temperature: 293
Atmosphere: 31% RH
Geometry: two-probe pressed powder pellet
Context: hydrated mixed-metal pristine MOF pellet
Measurement source: text after p027 · Conductivity SI · Figure S24; Table S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Tetrametallic _h electrical conductivity	2.8 x 10^-7 S/cm	2.8e-7 S/cm	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7
Tetrametallic _h proton conductivity	1.3 x 10^-4 S/cm	0.00013 S/cm	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7

variable-temperature PEIS Arrhenius analysis

H12-Fe2-(DOBDP)3.12H2O (_h) powder · Powder

Variable-temperature proton conductivity for Fe/Al _h and _ph phases.

Temperature: variable
Atmosphere: 31% RH context for reported table; climatic chamber for VT measurements
Geometry: two-probe pressed powder pellet
Context: pristine and partially hydrated MOF pellets
Measurement source: p008 · Mixed proton-electron transport · Figure 4C; Table S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Al _h proton activation energy	0.37 eV	0.37 eV	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7
Al _ph proton activation energy	0.46 eV	0.46 eV	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7
Fe _h proton activation energy	0.16 eV	0.16 eV	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7
Fe _ph proton activation energy	0.47 eV	0.47 eV	—	SI Table Exact Reported	text after p027 · Table S7 · Table S7