Electrochemistry Application — In-situ Growth of Ultrathin ZIF-67 Nanosheets on Conductive Ti@TiO2/CdS Substrate for High-efficient Electrochemical Catalysis

15 measurement groups · 20 results

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

double-layer capacitance from cyclic voltammograms

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

CV between 1.22 and 1.32 V vs RHE without redox processes; Cdl from current density vs scan rate.

Geometry: direct working electrode
Context: target composite electrode
Measurement source: 4 · Results and discussion · Fig. S11

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
double-layer capacitance of Ti@TiO2/CdS/Co(OH)2	2.35 mF/cm2	—	—	Text Exact Reported	4 · Results and discussion · Fig. S11C
double-layer capacitance of Ti@TiO2/CdS/ZIF-67Marked as a best value within this paper	3.72 mF/cm2	—	—	Text Exact Reported	4 · Results and discussion · Fig. S11C

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode, 194 ug cm^-2 Co(OH)2 loading · Electrode

1 M NaOH, scan rate 10 mV s^-1; mass loading 194 ug cm^-2.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p007 · Supplementary Figures · Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope at 194 ug cm^-2 loading	113 mV/dec	—	—	Figure Axis Approximate	SI rendered p007 · Supplementary Figures · Fig. S5B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode, 294 ug cm^-2 Co(OH)2 loading · Electrode

1 M NaOH, scan rate 10 mV s^-1; mass loading 294 ug cm^-2.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p007 · Supplementary Figures · Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope at 294 ug cm^-2 loadingMarked as a best value within this paper	42 mV/dec	—	—	Figure Axis Approximate	SI rendered p007 · Supplementary Figures · Fig. S5B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode, 389 ug cm^-2 Co(OH)2 loading · Electrode

1 M NaOH, scan rate 10 mV s^-1; mass loading 389 ug cm^-2.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p007 · Supplementary Figures · Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope at 389 ug cm^-2 loading	52 mV/dec	—	—	Figure Axis Approximate	SI rendered p007 · Supplementary Figures · Fig. S5B

steady-state polarisation / LSV for OER

Voltammetry

Ti@TiO2/CdS/Co(OH)2 electrode · Electrode

1 M NaOH, room temperature, scan rate 10 mV s^-1.

Temperature: room temperature
Geometry: direct working electrode
Context: Co(OH)2 precursor/control electrode
Measurement source: 3 · Results and discussion · Fig. 2A

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER overpotential at 10 mA cm^-2 for Co(OH)2 control	0.57 V	—	—	Text Exact Reported	4 · Results and discussion · Fig. 2A
OER Tafel slope for Co(OH)2 control	130 mV/dec	—	—	Text Rounded Reported	4 · Results and discussion · Fig. 2B

steady-state polarisation / LSV for OER

Voltammetry

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

1 M NaOH, room temperature, scan rate 10 mV s^-1; three-electrode cell with Hg/HgO reference and Pt counter.

Temperature: room temperature
Geometry: direct working electrode; current density normalised to geometrical surface area
Context: target composite electrode
Measurement source: 3 · Results and discussion · Fig. 2A

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER overpotential at 10 mA cm^-2Marked as a best value within this paper	0.41 V at 10 mA cm^-2	—	—	Text Exact Reported	3 · Results and discussion · Fig. 2A
OER potential at 10 mA cm^-2Marked as a best value within this paper	1.64 V vs RHE	—	—	Text Exact Reported	3 · Results and discussion · Fig. 2A

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67-P electrode · Electrode

1 M NaOH, scan rate 10 mV s^-1; powder-cast ZIF-67 control vs in-situ ZIF-67.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p009 · Supplementary Figures · Fig. S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope for Ti@TiO2/CdS/ZIF-67-P powder-cast control	71 mV/dec	—	—	Figure Axis Approximate	SI rendered p009 · Supplementary Figures · Fig. S9B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode, 4 h ZIF-67 reaction · Electrode

1 M NaOH, scan rate 10 mV s^-1; ZIF-67 reaction time 4 h.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p008 · Supplementary Figures · Fig. S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope after 4 h ZIF-67 reaction	47 mV/dec	—	—	Figure Axis Approximate	SI rendered p008 · Supplementary Figures · Fig. S6B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

1 M NaOH, scan rate 10 mV s^-1; ZIF-67 reaction time 6 h.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p008 · Supplementary Figures · Fig. S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope after 6 h ZIF-67 reactionMarked as a best value within this paper	42 mV/dec	—	—	Figure Axis Approximate	SI rendered p008 · Supplementary Figures · Fig. S6B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode, 8 h ZIF-67 reaction · Electrode

1 M NaOH, scan rate 10 mV s^-1; ZIF-67 reaction time 8 h.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p008 · Supplementary Figures · Fig. S6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope after 8 h ZIF-67 reaction	53 mV/dec	—	—	Figure Axis Approximate	SI rendered p008 · Supplementary Figures · Fig. S6B

steady-state polarisation / LSV scan-rate dependence

Voltammetry

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

1 M NaOH; scan rates 5, 8, 10 and 15 mV s^-1.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p007 · Supplementary Figures · Fig. S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER scan-rate dependence	curves at 5, 8, 10 and 15 mV/s nearly overlap	—	—	Qualitative Qualitative	SI rendered p007 · Supplementary Figures · Fig. S4

chronoamperometric OER stability and before/after polarisation

Chronoamperometry

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

Constant overpotential 0.40 V vs RHE for 30 h, followed by polarisation comparison.

Geometry: direct working electrode
Context: target composite electrode
Measurement source: 4 · Results and discussion · Fig. 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER stability test duration	30 h	—	—	Text Exact Reported	5 · Results and discussion · Fig. 4
OER stability test constant overpotential	0.40 V vs RHE	—	—	Text Exact Reported	5 · Results and discussion · Fig. 4
OER current retained after 30 h	73% labelled on Fig. 4A	—	—	Figure Axis Approximate	4 · Figure · Fig. 4A

Tafel analysis from polarisation curves

Tafel and polarisation analysis

Ti@TiO2/CdS/ZIF-67 electrode · Electrode

Derived from OER polarisation curves in 1 M NaOH.

Temperature: room temperature
Geometry: direct working electrode
Context: target composite electrode
Measurement source: 4 · Results and discussion · Fig. 2B

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slopeMarked as a best value within this paper	ca. 42 mV/dec	—	—	Text Approximate	4 · Results and discussion · Fig. 2B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti/CdS/ZIF-67 electrode · Electrode

1 M NaOH, scan rate 10 mV s^-1; Ti/CdS/ZIF-67 vs Ti@TiO2/CdS/ZIF-67 support comparison.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p008 · Supplementary Figures · Fig. S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope for Ti/CdS/ZIF-67 control	44 mV/dec	—	—	Figure Axis Approximate	SI rendered p008 · Supplementary Figures · Fig. S7B

OER polarisation and Tafel analysis

Tafel and polarisation analysis

Ti@TiO2/ZIF-67 electrode · Electrode

1 M NaOH, scan rate 10 mV s^-1; Ti@TiO2/ZIF-67 vs Ti@TiO2/CdS/ZIF-67 CdS comparison.

Geometry: direct working electrode; current density normalised to geometrical surface area
Context: SI optimisation/control for target composite electrode
Measurement source: SI rendered p008 · Supplementary Figures · Fig. S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope for Ti@TiO2/ZIF-67 control	55 mV/dec	—	—	Figure Axis Approximate	SI rendered p008 · Supplementary Figures · Fig. S8B