Synthesis · Conjugated Copper–Catecholate Framework Electrodes for Efficient Energy Storage

4 structured synthesis routes

Completeness describes how fully the route could be reconstructed from the main article and supporting information.

Complete recipeSource: SI

S4 · Preparation the free-standing Cu-DBC film electrode · Scheme S2

SolventsSmall amount of ethanol; PTFE binder solution in water

AdditivesCarbon black and PTFE binder

AtmosphereVacuum drying

Temperature70

TimeOvernight drying

Work-upGround Cu-DBC/carbon black, added PTFE binder and ethanol, kneaded into paste, rolled into free-standing film.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	Cu-DBC powder	10 mg	S4 · Preparation the free-standing Cu-DBC film electrode · Scheme S2
Additive	carbon black	2 mg	S4 · Preparation the free-standing Cu-DBC film electrode · Scheme S2
Additive	PTFE binder solution	16 uL · 10 wt% in H2O	S4 · Preparation the free-standing Cu-DBC film electrode · Scheme S2
Solvent	ethanol	small amount	S4 · Preparation the free-standing Cu-DBC film electrode · Scheme S2

Complete recipeSource: SI

S4 · Standard three-electrode system measurements

Solvents0.3 mL isopropanol vehicle

Additives0.3 mg carbon black; 30 uL 5% Nafion solution

AtmosphereAir drying

TimeAt least 1 h drying before measurement

Substrate orientationPre-polished glassy carbon electrode, 0.0707 cm2

Work-upUltrasonically mixed for 30 min; 5 uL slurry pipetted and spread onto GCE; dried in air.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	as-prepared Cu-DBC powder	3.0 mg	S4 · Standard three-electrode system measurements
Additive	carbon black	0.3 mg	S4 · Standard three-electrode system measurements
Additive	Nafion solution	30 uL · 5%	S4 · Standard three-electrode system measurements
Solvent	isopropanol	0.3 mL	S4 · Standard three-electrode system measurements

Complete recipeSource: Both

S3 · Section 2. Synthetic Procedures · Scheme S1

Metal precursorsCu(OAc)2.H2O

Linker precursors8OH-DBC ligand

SolventsDegassed N,N-dimethylformamide and degassed deionized water; SI recipe 500 uL DMF plus 2 mL water, main text v/v = 1:4.

AtmosphereMain text: argon atmosphere; SI: degassed solvents.

Temperature85

Time72

Work-upWashed with water and acetone several times; dried overnight under vacuum at room temperature.

ActivationFor gas sorption, samples were activated at 120 C for 12 h under vacuum (10-5 bar).

Scalability contextSmall-vial microcrystal synthesis; no scale-up study reported.

Show 4 structured reagent records

Role	Reagent	Amount / concentration	Source
Linker	8OH-DBC ligand	8.6 mg	S3 · Section 2. Synthetic Procedures · Scheme S1
Metal Source	Cu(OAc)2.H2O	6 mg	S3 · Section 2. Synthetic Procedures · Scheme S1
Solvent	degassed dimethyformamide (DMF)	500 uL	S3 · Section 2. Synthetic Procedures · Scheme S1
Solvent	degassed deionized water	2 mL	S3 · Section 2. Synthetic Procedures · Scheme S1

Complete recipeSource: SI

S4 · Preparation Two-electrode symmetrical Solid-State cell · Scheme S2

Solvents30 uL 1 mol L-1 NaCl aqueous electrolyte

AdditivesNKK-MPF30AC-100 membrane separator

Substrate orientationTwo identical 3 x 3 mm2 free-standing Cu-DBC film pieces

Work-upFilm cut into small slices and assembled with separator/electrolyte in a coin-shaped symmetric cell.

Show 3 structured reagent records

Role	Reagent	Amount / concentration	Source
Other	freestanding Cu-DBC films	two pieces; 3 x 3 mm2; active mass about 2.22 mg cm-2	S4 · Preparation Two-electrode symmetrical Solid-State cell · Scheme S2
Additive	NKK-MPF30AC-100 membrane	Not specified	S4 · Preparation Two-electrode symmetrical Solid-State cell · Scheme S2
Electrolyte	NaCl aqueous solution	30 uL · 1 mol L-1	S4 · Preparation Two-electrode symmetrical Solid-State cell · Scheme S2