cMOF Evidence Base
Sensing Application — Co-Ca Phosphonate Showing Humidity-Sensitive Single Crystal to Single Crystal Structural Transformation and Tunable Proton Conduction Properties

Measurement evidence

Sensing Application

Co-Ca Phosphonate Showing Humidity-Sensitive Single Crystal to Single Crystal Structural Transformation and Tunable Proton Conduction Properties · Bao S.-S., Li N.-Z., Taylor J.M. et al. · Chemistry of Materials · 2015 · 8116-8125

2 measurement groups · 9 results

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

Impedance humidity sensing

CoCa.nH2O powder/pellet humidity sensor samples · Pellet

Powder pellets and unpressed powder cycled between 55% and 95% RH at 1 kHz and 0.1 V.

Temperature
298 K
Atmosphere
55-95% RH cycling
Geometry
Round pellet, square pellet, and powder between electrodes without pressure.
Context
pristine framework powder/pellet sensors
Measurement source
main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S22
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Round powder pellet sensor equilibration time>600 s for round pellet—>Text
Range		main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S22a
Square powder pellet sensor equilibration time>200 s for square pellet—>Text
Range		main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S22b
Unpressed powder sensor recovery timeabout 76 s—aboutText
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S22c
Unpressed powder sensor response timeabout 62 s—aboutText
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S22c

Impedance humidity sensing

CoCa.nH2O single-crystal humidity sensor along [010] · Single Crystal

Single crystal along [010] cycled between 55% and 95% RH for 5 cycles at 1 kHz and 0.1 V.

Temperature
298 K
Atmosphere
55-95% RH cycling
Geometry
0.60 x 0.30 x 0.10 mm3 single crystal along [010]
Context
pristine framework single-crystal sensor
Measurement source
main p.7, article p.8122 · Humidity Sensing Properties · Figure 5; SI Figure S21
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Single-crystal sensor low-impedance statebottom ca. 0.28 Mohm—ca.Text
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · Figure 5
Optimised single-crystal sensor frequency1 kHz selected as optimised working frequency——Text
Exact Reported		main p.7, article p.8122 · Humidity Sensing Properties · SI Figure S21
Single-crystal sensor high-impedance statepeak ca. 250 Mohm—ca.Text
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · Figure 5
Single-crystal humidity sensor recovery timeMarked as a best value within this paperabout 49 s from 95% to 55% RH—aboutText
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · Figure 5
Single-crystal humidity sensor response timeMarked as a best value within this paperabout 35 s from 55% to 95% RH—aboutText
Approximate		main p.7, article p.8122 · Humidity Sensing Properties · Figure 5