Electrochemistry Application — Fabrication of a Novel Cu Based Conjugated Coordination Polymer for Effective Electroreduction of Nitrate to Ammonia and Zn–Nitrate Batteries

13 measurement groups · 99 results

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

Cyclic voltammetry double-layer capacitance

Voltammetry

Cu3(HHTP)2/CF pine-like comparison electrode · Electrode

Cdl determined from CV; detailed curves are in Figure S17, whose caption and rendered SI image are available.

Geometry: composite electrode
Context: composite electrode on copper foam
Measurement source: 6 · Results and Discussions · Figure S17

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Double-layer capacitance Cdl	19.18 mF cm-2	—	—	Text Exact Reported	6 · Results and Discussions · Figure S17

Cyclic voltammetry double-layer capacitance

Voltammetry

Cu3(HITP)2/CF pine-like electrode · Electrode

Cdl determined from CV; detailed curves are in Figure S17, whose caption and rendered SI image are available.

Geometry: composite electrode
Context: composite electrode on copper foam
Measurement source: 6 · Results and Discussions · Figure S17

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Double-layer capacitance CdlMarked as a best value within this paper	40.14 mF cm-2	—	—	Text Exact Reported	6 · Results and Discussions · Figure S17

Control experiments for ammonia source

Cu3(HITP)2/CF pine-like electrode · Electrode

KOH-only, open-circuit, and electrolyte-only controls compared against NRA over Cu3(HITP)2/CF in SI Figure S21.

Temperature: room temperature
Geometry: composite electrode on copper foam
Context: composite electrode on copper foam and electrolyte controls
Measurement source: 10 · Supporting Information · Figure S21

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Electrolyte-only control NH3 yield	0.06 mg h-1 cm-2	—	read from SI figure label	Figure Axis Rounded Reported	10 · Supporting Information · Figure S21
KOH-only control NH3 yield	0.15 mg h-1 cm-2	—	read from SI figure label	Figure Axis Rounded Reported	10 · Supporting Information · Figure S21
NRA Cu3(HITP)2/CF NH3 yield control comparisonMarked as a best value within this paper	19.9 mg h-1 cm-2	—	read from SI figure label	Figure Axis Rounded Reported	10 · Supporting Information · Figure S21
Open-circuit control NH3 yield	0.3 mg h-1 cm-2	—	read from SI figure label	Figure Axis Rounded Reported	10 · Supporting Information · Figure S21

Hydrazine by-product UV-vis assay

UV-visible and optical absorption spectroscopy

Cu3(HITP)2/CF pine-like electrode · Electrode

N2H4 assays for Cu3(HITP)2/CF and Cu3(HHTP)2/CF after NRA at -0.5 to -0.9 V vs RHE; SI Figure S11.

Temperature: room temperature
Geometry: composite electrode on copper foam
Context: comparison of composite electrodes
Measurement source: 5 · Results and Discussions · Figures S8-S11

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Hydrazine by-product levelMarked as a best value within this paper	N2H4 remained relatively low for both catalysts	—	—	Text Qualitative	5 · Results and Discussions · Figure S11

Nitrite by-product UV-vis assay and Faradaic efficiency estimate

UV-visible and optical absorption spectroscopy

Cu3(HHTP)2/CF pine-like comparison electrode · Electrode

NO2- assays for Cu3(HHTP)2/CF after NRA at -0.5 to -0.9 V vs RHE; plotted in SI Figure S10.

Temperature: room temperature
Geometry: composite electrode on copper foam
Context: composite electrode on copper foam
Measurement source: 4 · Supporting Information · Figure S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NO2- Faradaic efficiency at -0.5 V vs RHE	about 6.7%	0.067 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S10
NO2- Faradaic efficiency at -0.6 V vs RHE	about 4.0%	0.04 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S10
NO2- Faradaic efficiency at -0.7 V vs RHE	about 2.8%	0.027999999999999997 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S10
NO2- Faradaic efficiency at -0.8 V vs RHE	about 2.0%	0.02 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S10
NO2- Faradaic efficiency at -0.9 V vs RHE	about 1.5%	0.015 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S10

Nitrite by-product UV-vis assay and Faradaic efficiency estimate

UV-visible and optical absorption spectroscopy

Cu3(HITP)2/CF pine-like electrode · Electrode

NO2- assays for Cu3(HITP)2/CF after NRA at -0.5 to -0.9 V vs RHE; calibration and potential-dependent FE plotted in SI Figures S8-S9.

Temperature: room temperature
Geometry: composite electrode on copper foam
Context: composite electrode on copper foam
Measurement source: 4 · Supporting Information · Figures S8-S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NO2- Faradaic efficiency at -0.5 V vs RHE	about 3.9%	0.039 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S9
NO2- Faradaic efficiency at -0.6 V vs RHE	about 3.5%	0.035 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S9
NO2- Faradaic efficiency at -0.7 V vs RHE	about 2.1%	0.021 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S9
NO2- Faradaic efficiency at -0.8 V vs RHE	about 1.1%	0.011000000000000001 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S9
NO2- Faradaic efficiency at -0.9 V vs RHE	about 1.0%	0.01 fraction	visual estimate from SI bar plot	Visual Estimate Approximate	4 · Supporting Information · Figure S9

Nitrate electroreduction to ammonia; LSV and chronoamperometry; indophenol blue NH3 quantification

Voltammetry Chronoamperometry

Cu3(HHTP)2/CF pine-like comparison electrode · Electrode

H-type cell; 1 M KOH + 0.1 M NaNO3; graphite counter electrode; Hg/HgO reference; potentials vs RHE; room temperature.

Temperature: room temperature
Geometry: Cu3(HHTP)2/CF directly used as working electrode
Context: composite electrode on copper foam
Measurement source: 5 · Results and Discussions · Figure 4b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Faradaic efficiency at -0.5 V vs RHE	about 58%	0.58 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.6 V vs RHE	about 82%	0.82 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.7 V vs RHE	about 77%	0.77 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.8 V vs RHE	about 72%	0.72 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.9 V vs RHE	65.12%	0.6512 fraction	—	Text Exact Reported	5 · Results and Discussions · Figure 4c
NH3 yield at -0.5 V vs RHE	about 3.2 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.6 V vs RHE	about 9.3 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.7 V vs RHE	about 10.6 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.8 V vs RHE	about 12.3 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.9 V vs RHE	12.86 mg h-1 cm-2	—	—	Text Exact Reported	5 · Results and Discussions · Figure 4b

NRA activity of Cu3(HHTP)2 powder analogue

Cu3(HHTP)2 powder · Powder

Powder Cu3(HHTP)2 evaluated by LSV, chronoamperometry, UV-vis and NH3 yield/FE plots in SI Figure S16.

Temperature: room temperature
Geometry: powder catalyst configuration not specified in main text
Context: pristine powder control
Measurement source: 7 · Supporting Information · Figure S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu3(HHTP)2 powder maximum Faradaic efficiency	about 80%	0.8 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder FE at -0.5 V vs RHE	about 60%	0.6 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder FE at -0.6 V vs RHE	about 70%	0.7 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder FE at -0.7 V vs RHEMarked as a best value within this paper	about 80%	0.8 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder FE at -0.8 V vs RHE	about 60%	0.6 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder FE at -0.9 V vs RHE	about 70%	0.7 fraction	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder maximum NH3 yield	about 6.55 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder NH3 yield at -0.5 V vs RHE	about 0.9 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder NH3 yield at -0.6 V vs RHE	about 1.35 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder NH3 yield at -0.7 V vs RHE	about 2.85 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder NH3 yield at -0.8 V vs RHE	about 3.85 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16
Cu3(HHTP)2 powder NH3 yield at -0.9 V vs RHEMarked as a best value within this paper	about 6.55 mg h-1 cm-2	—	visual estimate from SI Figure S16d	Visual Estimate Approximate	7 · Supporting Information · Figure S16

Nitrate electroreduction to ammonia; LSV and chronoamperometry; indophenol blue NH3 quantification

Voltammetry Chronoamperometry

Cu3(HITP)2/CF pine-like electrode · Electrode

H-type cell; 1 M KOH + 0.1 M NaNO3; graphite counter electrode; Hg/HgO reference; potentials vs RHE; room temperature; potentiostatic tests 1 h from -0.5 to -0.9 V.

Temperature: room temperature
Geometry: Cu3(HITP)2/CF directly used as working electrode
Context: composite electrode on copper foam
Measurement source: 4-6 and 9 · Results and Discussions; Experimental Section · Figure 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Faradaic efficiency at -0.9 V vs RHE	71.78%	0.7178 fraction	—	Text Exact Reported	5 · Results and Discussions · Figure 4c
Maximum Faradaic efficiencyMarked as a best value within this paper	87.87% at -0.5 V vs RHE	0.8787 fraction	—	Text Exact Reported	5 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.6 V vs RHE	about 88%	0.88 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.7 V vs RHE	about 78%	0.78 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
Faradaic efficiency at -0.8 V vs RHE	about 69%	0.69 fraction	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4c
NH3 yield at -0.9 V vs RHEMarked as a best value within this paper	19.9 mg h-1 cm-2	—	—	Text Exact Reported	5 · Results and Discussions · Figure 4b
NH3 yield at -0.5 V vs RHE	about 5.6 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.6 V vs RHE	about 9.2 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.7 V vs RHE	about 13.1 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b
NH3 yield at -0.8 V vs RHE	about 18.8 mg h-1 cm-2	—	visual estimate from plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4b

Repeated NRA i-t cycling at -0.9 V vs RHE

Cu3(HITP)2/CF pine-like electrode · Electrode

Five repeated i-t tests of Cu3(HITP)2/CF with NH3 yield and FE plotted in Figure 4e.

Temperature: room temperature
Geometry: composite electrode on copper foam
Context: composite electrode on copper foam
Measurement source: 6 · Results and Discussions · Figure 4e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cycle 1 Faradaic efficiency	about 80%	0.8 fraction	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 1 NH3 yield	about 20.7 mg h-1 cm-2	—	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 2 Faradaic efficiency	about 70%	0.7 fraction	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 2 NH3 yield	about 18.8 mg h-1 cm-2	—	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 3 Faradaic efficiency	about 72%	0.72 fraction	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 3 NH3 yield	about 18.2 mg h-1 cm-2	—	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 4 Faradaic efficiency	about 68%	0.68 fraction	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 4 NH3 yield	about 18.8 mg h-1 cm-2	—	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 5 Faradaic efficiency	about 75%	0.75 fraction	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e
Cycle 5 NH3 yield	about 15.6 mg h-1 cm-2	—	visual estimate from Figure 4e	Visual Estimate Approximate	6 · Results and Discussions · Figure 4e

NRA at varied nitrate concentration

Cu3(HITP)2/CF pine-like electrode · Electrode

Cu3(HITP)2/CF tested at -0.9 V vs RHE in 1 M KOH with 10, 25, 50, 75 and 100 mM NO3-.

Temperature: room temperature
Geometry: composite electrode
Context: composite electrode on copper foam
Measurement source: 6 · Results and Discussions · Figure 4d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NH3 yield at 100 mM NO3-Marked as a best value within this paper	19.9 mg h-1 cm-2	—	—	Text Exact Reported	6 · Results and Discussions · Figure 4d
NH3 yield at 10 mM NO3-	0.485 mg h-1 cm-2	—	—	Text Exact Reported	6 · Results and Discussions · Figure 4d
NH3 yield at 25 mM NO3-	about 6.4 mg h-1 cm-2	—	visual estimate from bar plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4d
NH3 yield at 50 mM NO3-	about 13.1 mg h-1 cm-2	—	visual estimate from bar plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4d
NH3 yield at 75 mM NO3-	about 15.8 mg h-1 cm-2	—	visual estimate from bar plot	Visual Estimate Approximate	6 · Results and Discussions · Figure 4d

NRA activity of powder Cu3(HITP)2 and Cu3(HHTP)2 analogues

Cu3(HITP)2 powder · Powder

Powder materials evaluated for NRA; detailed data are in Figures S15 and S16, whose captions and rendered SI images are available.

Geometry: powder catalyst configuration not specified in main text
Context: pristine powder control
Measurement source: 5 · Results and Discussions · Figures S15-S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu3(HITP)2 powder maximum Faradaic efficiencyMarked as a best value within this paper	89.23%	0.8923 fraction	—	Text Exact Reported	5 · Results and Discussions · Figures S15-S16
Cu3(HITP)2 powder FE at -0.5 V vs RHE	about 49%	0.49 fraction	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder FE at -0.6 V vs RHE	about 64%	0.64 fraction	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder FE at -0.7 V vs RHEMarked as a best value within this paper	about 89.23%	0.8923000000000001 fraction	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder FE at -0.8 V vs RHE	about 86%	0.86 fraction	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder FE at -0.9 V vs RHE	about 89%	0.89 fraction	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder maximum NH3 yieldMarked as a best value within this paper	8.51 mg h-1 cm-2	—	—	Text Exact Reported	5 · Results and Discussions · Figures S15-S16
Cu3(HITP)2 powder NH3 yield at -0.5 V vs RHE	about 0.45 mg h-1 cm-2	—	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder NH3 yield at -0.6 V vs RHE	about 1.2 mg h-1 cm-2	—	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder NH3 yield at -0.7 V vs RHE	about 3.0 mg h-1 cm-2	—	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder NH3 yield at -0.8 V vs RHE	about 3.9 mg h-1 cm-2	—	visual estimate from SI Figure S15d	Visual Estimate Approximate	6 · Supporting Information · Figure S15
Cu3(HITP)2 powder NH3 yield at -0.9 V vs RHEMarked as a best value within this paper	about 8.51 mg h-1 cm-2	—	visual estimate from SI Figure S15d	Figure Axis Rounded Reported	6 · Supporting Information · Figure S15

Rechargeable Zn-NO3 battery test

Cu3(HITP)2/CF pine-like electrode · Electrode

Cu3(HITP)2/CF cathode, Zn plate anode, H-type cell, 20 mL catholyte 1 M KOH + 0.1 M NaNO3, 20 mL anolyte 6 M KOH + 0.2 M Zn(Ac)2, Nafion 211 membrane; room-temperature polarization at 10 mV s-1; cycling at 10 mA cm-2.

Temperature: room temperature
Geometry: 1 cm2 Cu3(HITP)2/CF cathode
Context: composite electrode application
Measurement source: 8 and 10 · Results and Discussions; Experimental Section · Figure 6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cycling stabilityMarked as a best value within this paper	stable voltage output over 110 cycles at 10 mA cm-2	—	—	Text Exact Reported	8 · Results and Discussions · Figure 6d
Discharge voltage at 1 mA cm-2	around 1.2 V	—	reported approximately	Text Approximate	8 · Results and Discussions · Figure 6e
Optimal Faradaic efficiency in Zn-NO3 batteryMarked as a best value within this paper	79.03% at 6 mA cm-2	0.7903 fraction	—	Text Exact Reported	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 1 mA cm-2	about 28%	0.28 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 1 mA cm-2	about 0.02 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 2 mA cm-2	about 30%	0.3 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 2 mA cm-2	about 0.045 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 3 mA cm-2	about 40%	0.4 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 3 mA cm-2	about 0.09 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 4 mA cm-2	about 35%	0.35 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 4 mA cm-2	about 0.105 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 5 mA cm-2	about 61%	0.61 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 5 mA cm-2	about 0.24 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 6 mA cm-2Marked as a best value within this paper	about 79.03%	0.7903 fraction	text/figure endpoint	Text Exact Reported	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 6 mA cm-2	about 0.38 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 7 mA cm-2	about 79%	0.79 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 7 mA cm-2	about 0.44 mg h-1 cm-2	—	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery FE at 8 mA cm-2	about 74%	0.74 fraction	visual estimate from Figure 6f	Visual Estimate Approximate	8-9 · Results and Discussions · Figure 6f
Zn-NO3 battery NH3 yield at 8 mA cm-2Marked as a best value within this paper	about 0.468 mg h-1 cm-2	—	text/figure endpoint	Text Exact Reported	8-9 · Results and Discussions · Figure 6f
Highest NH3 yield in Zn-NO3 batteryMarked as a best value within this paper	0.468 mg h-1 cm-2	—	—	Text Exact Reported	8-9 · Results and Discussions · Figure 6f
Open-circuit voltage	1.26 V vs Zn/Zn2+	—	—	Text Exact Reported	8 · Results and Discussions · Figure 6b
Current density at maximum power density	16.65 mA cm-2	—	—	Text Exact Reported	8 · Results and Discussions · Figure 6c
Maximum power densityMarked as a best value within this paper	7.18 mW cm-2 at 16.65 mA cm-2	—	—	Text Exact Reported	8 · Results and Discussions · Figure 6c