Electrochemistry Application — Ultrathin 2D metal-organic framework nanosheet arrays to boost the overall efficiency of water splitting

8 measurement groups · 36 results

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

Cyclic voltammetry-derived ECSA / double-layer capacitance

Voltammetry

TIT-1@NS/NF · Electrode

CV curves at multiple scan rates; HER potential window; reported values in mF cm-2.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, Pt/C and bare NF controls
Measurement source: 100 · 3.3. Electrochemical performance · Fig. 6c,d,f; Figs. S8-S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
HER ECSA/Cdl, NF	8.08 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6f; Fig. S8
HER ECSA/Cdl, Pt/C	16.9 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6f; Fig. S9
HER ECSA/Cdl, TIT-1Marked as a best value within this paper	20.3 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6f
HER ECSA/Cdl, TIT-1@NS	16.9 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6f

Cyclic voltammetry-derived ECSA / double-layer capacitance

Voltammetry

TIT-1@NS/NF · Electrode

CV curves at multiple scan rates; OER potential window; reported values in mF cm-2.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, RuO2 and bare NF controls
Measurement source: 100 · 3.3. Electrochemical performance · Fig. 6a,b,e; Figs. S7-S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER ECSA/Cdl, NF	8.3 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6e; Fig. S8
OER ECSA/Cdl, RuO2Marked as a best value within this paper	19.3 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6e; Fig. S7
OER ECSA/Cdl, TIT-1	16.7 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6e
OER ECSA/Cdl, TIT-1@NS	18.0 mF cm-2	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 6e

HER linear sweep voltammetry

Voltammetry

TIT-1@NS/NF · Electrode

Three-electrode HER in 1.0 M KOH at ambient temperature; scan rate 5 mV s-1; compared with Pt/C, TIT-1 and bare NF.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, Pt/C and bare NF controls
Measurement source: 100 · 3.3. Electrochemical performance · Fig. 5c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
HER overpotential at 10 mA cm-2, NF	281 mV	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5c
HER overpotential at 10 mA cm-2, Pt/CMarked as a best value within this paper	240 mV	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5c
HER overpotential at 10 mA cm-2, TIT-1	273 mV	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5c
HER overpotential at 10 mA cm-2, TIT-1@NS, abstract	270 mV	—	—	Text Exact Reported	95 · Abstract
HER overpotential at 10 mA cm-2, TIT-1@NS, Table 1	296 mV	—	—	Table Exact Reported	100 · 3.3. Electrochemical performance · Table 1
HER overpotential at 10 mA cm-2, TIT-1@NS, results text	260 mV	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5c

HER Tafel analysis

Tafel and polarisation analysis

TIT-1@NS/NF · Electrode

Potential versus log(j) analysis for HER kinetics.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, Pt/C and bare NF controls
Measurement source: 100 · 3.3. Electrochemical performance · Fig. 5d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
HER Tafel slope, NF	65.7 mV dec-1	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5d
HER Tafel slope, Pt/C	61.8 mV dec-1	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5d
HER Tafel slope, TIT-1	67.0 mV dec-1	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5d
HER Tafel slope, TIT-1@NSMarked as a best value within this paper	60.0 mV dec-1	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5d

OER linear sweep voltammetry

Voltammetry

TIT-1@NS/NF · Electrode

Three-electrode OER in 1.0 M KOH at ambient temperature; scan rate 5 mV s-1; iR correction stated in results text although methods say no iR compensation.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, RuO2 and bare NF controls
Measurement source: 99 · 3.3. Electrochemical performance · Fig. 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER overpotential at 10 mA cm-2, NF	248 mV	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5a
OER overpotential at 10 mA cm-2, RuO2	219 mV	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5a
OER overpotential at 10 mA cm-2, TIT-1	229 mV	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5a
OER overpotential at 10 mA cm-2, TIT-1@NSMarked as a best value within this paper	196 mV	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5a

OER Tafel analysis

Tafel and polarisation analysis

TIT-1@NS/NF · Electrode

Potential versus log(j) analysis for OER kinetics.

Geometry: three-electrode system
Context: TIT-1@NS/NF compared with TIT-1, RuO2 and bare NF controls
Measurement source: 99 · 3.3. Electrochemical performance · Fig. 5b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
OER Tafel slope, NF	217 mV dec-1	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5b
OER Tafel slope, RuO2	216 mV dec-1	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5b
OER Tafel slope, TIT-1	233 mV dec-1	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5b
OER Tafel slope, TIT-1@NSMarked as a best value within this paper	199 mV dec-1	—	—	Text Exact Reported	99 · 3.3. Electrochemical performance · Fig. 5b

Two-electrode overall water splitting

TIT-1@NS/NF · Electrode

Asymmetric/full electrolytic cell TIT-1@NS/NF||TIT-1@NS/NF in 1.0 M KOH; LSV scan rate 5 mV s-1.

Geometry: two-electrode electrolytic cell
Context: TIT-1@NS/NF used as both anode and cathode
Measurement source: 101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Faradaic efficiency	close to 100%	—	—	Text Approximate	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7c-d
collected O2:H2 volume ratio at 120 min	approximately 1:2	—	—	Text Approximate	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7d
H2 gas volume at 120 min	about 22.5 mL from Fig. 7d axis	—	visual estimate from rendered plot	Figure Axis Approximate	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7d
O2 gas volume at 120 min	about 11.2 mL from Fig. 7d axis	—	visual estimate from rendered plot	Figure Axis Approximate	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7d
cell voltage at 100 mA cm-2	1.68 V at 100 mA cm-2	—	—	Text Exact Reported	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7a
overall water-splitting cell potential at 16 h	about 1.76 V at 16 h from Fig. 7b axis	—	visual estimate, roughly +/- 0.03 V	Figure Axis Approximate	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7b
overall water splitting stability duration	16 h at 10 mA cm-2	—	—	Text Exact Reported	101 · 3.4. Fabrication of an asymmetrical two-electrode electrolytic cell for overall water splitting · Fig. 7b

Chronoamperometry / V-t stability

Chronoamperometry

TIT-1@NS/NF · Electrode

Constant current density 10 mA cm-2; OER/HER stability followed up to 12 h in Fig. 5e.

Geometry: three-electrode system
Context: TIT-1@NS/NF target electrode
Measurement source: 100 · 3.3. Electrochemical performance · Fig. 5e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
three-electrode stability duration	12 h	—	—	Text Exact Reported	100 · 3.3. Electrochemical performance · Fig. 5e
HER retention rate	90%	—	—	Text Exact Reported	95 · Abstract
OER retention rate	87%	—	—	Text Exact Reported	95 · Abstract